./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.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 c74f92ba3d978b3a2efb098ebc8eb373bc42abebaabf8c6efaf148fbe05036e0 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 16:26:18,329 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 16:26:18,331 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 16:26:18,396 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 16:26:18,397 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 16:26:18,401 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 16:26:18,402 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 16:26:18,408 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 16:26:18,410 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 16:26:18,412 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 16:26:18,413 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 16:26:18,415 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 16:26:18,415 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 16:26:18,421 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 16:26:18,422 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 16:26:18,424 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 16:26:18,429 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 16:26:18,430 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 16:26:18,432 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 16:26:18,434 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 16:26:18,438 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 16:26:18,439 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 16:26:18,440 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 16:26:18,441 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 16:26:18,443 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 16:26:18,445 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 16:26:18,445 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 16:26:18,446 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 16:26:18,447 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 16:26:18,448 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 16:26:18,448 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 16:26:18,449 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 16:26:18,450 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 16:26:18,451 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 16:26:18,452 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 16:26:18,452 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 16:26:18,453 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 16:26:18,453 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 16:26:18,453 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 16:26:18,454 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 16:26:18,454 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 16:26:18,455 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 16:26:18,492 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 16:26:18,493 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 16:26:18,493 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 16:26:18,493 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 16:26:18,494 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 16:26:18,495 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 16:26:18,495 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 16:26:18,495 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 16:26:18,496 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 16:26:18,496 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 16:26:18,497 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 16:26:18,497 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 16:26:18,497 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 16:26:18,497 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 16:26:18,497 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 16:26:18,497 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 16:26:18,498 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 16:26:18,498 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 16:26:18,498 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 16:26:18,498 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 16:26:18,498 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 16:26:18,499 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 16:26:18,499 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 16:26:18,499 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 16:26:18,499 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 16:26:18,499 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 16:26:18,500 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 16:26:18,500 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 16:26:18,500 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 16:26:18,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 16:26:18,500 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 16:26:18,501 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 16:26:18,501 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 16:26:18,501 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 16:26:18,501 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c74f92ba3d978b3a2efb098ebc8eb373bc42abebaabf8c6efaf148fbe05036e0 [2021-12-17 16:26:18,731 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 16:26:18,758 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 16:26:18,761 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 16:26:18,762 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 16:26:18,762 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 16:26:18,763 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c [2021-12-17 16:26:18,820 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d9dff38a/d2d96ecfea8940859f2b1e55ed5cbfbf/FLAG990012df9 [2021-12-17 16:26:19,382 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 16:26:19,387 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c [2021-12-17 16:26:19,406 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d9dff38a/d2d96ecfea8940859f2b1e55ed5cbfbf/FLAG990012df9 [2021-12-17 16:26:19,665 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d9dff38a/d2d96ecfea8940859f2b1e55ed5cbfbf [2021-12-17 16:26:19,668 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 16:26:19,669 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 16:26:19,671 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 16:26:19,671 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 16:26:19,674 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 16:26:19,674 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 04:26:19" (1/1) ... [2021-12-17 16:26:19,675 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d8b4257 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:26:19, skipping insertion in model container [2021-12-17 16:26:19,675 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 04:26:19" (1/1) ... [2021-12-17 16:26:19,681 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 16:26:19,752 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 16:26:20,020 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.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[18857,18870] [2021-12-17 16:26:20,062 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.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[25957,25970] [2021-12-17 16:26:20,097 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.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[29482,29495] [2021-12-17 16:26:20,107 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.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[32880,32893] [2021-12-17 16:26:20,117 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.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[36938,36951] [2021-12-17 16:26:20,125 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.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[40412,40425] [2021-12-17 16:26:20,133 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.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[43977,43990] [2021-12-17 16:26:20,147 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.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[47412,47425] [2021-12-17 16:26:20,159 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.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[51091,51104] [2021-12-17 16:26:20,166 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.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[54693,54706] [2021-12-17 16:26:20,174 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.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[58222,58235] [2021-12-17 16:26:20,199 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 16:26:20,208 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 16:26:20,282 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.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[18857,18870] [2021-12-17 16:26:20,318 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.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[25957,25970] [2021-12-17 16:26:20,337 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.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[29482,29495] [2021-12-17 16:26:20,368 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.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[32880,32893] [2021-12-17 16:26:20,396 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.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[36938,36951] [2021-12-17 16:26:20,416 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.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[40412,40425] [2021-12-17 16:26:20,430 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.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[43977,43990] [2021-12-17 16:26:20,444 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[47412,47425] [2021-12-17 16:26:20,452 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.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[51091,51104] [2021-12-17 16:26:20,458 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.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[54693,54706] [2021-12-17 16:26:20,467 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.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[58222,58235] [2021-12-17 16:26:20,484 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 16:26:20,502 INFO L208 MainTranslator]: Completed translation [2021-12-17 16:26:20,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:26:20 WrapperNode [2021-12-17 16:26:20,504 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 16:26:20,505 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 16:26:20,505 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 16:26:20,505 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 16:26:20,512 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:26:20" (1/1) ... [2021-12-17 16:26:20,542 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:26:20" (1/1) ... [2021-12-17 16:26:20,620 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 2770 [2021-12-17 16:26:20,621 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 16:26:20,621 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 16:26:20,622 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 16:26:20,622 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 16:26:20,629 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:26:20" (1/1) ... [2021-12-17 16:26:20,629 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:26:20" (1/1) ... [2021-12-17 16:26:20,639 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:26:20" (1/1) ... [2021-12-17 16:26:20,639 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:26:20" (1/1) ... [2021-12-17 16:26:20,661 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:26:20" (1/1) ... [2021-12-17 16:26:20,674 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:26:20" (1/1) ... [2021-12-17 16:26:20,679 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:26:20" (1/1) ... [2021-12-17 16:26:20,687 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 16:26:20,688 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 16:26:20,688 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 16:26:20,688 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 16:26:20,692 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:26:20" (1/1) ... [2021-12-17 16:26:20,706 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 16:26:20,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 16:26:20,737 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-17 16:26:20,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-17 16:26:20,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 16:26:20,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 16:26:20,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 16:26:20,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 16:26:20,985 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 16:26:20,986 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 16:26:22,247 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 16:26:22,263 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 16:26:22,263 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-17 16:26:22,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 04:26:22 BoogieIcfgContainer [2021-12-17 16:26:22,266 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 16:26:22,267 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 16:26:22,268 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 16:26:22,270 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 16:26:22,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 04:26:19" (1/3) ... [2021-12-17 16:26:22,271 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3561c806 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 04:26:22, skipping insertion in model container [2021-12-17 16:26:22,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:26:20" (2/3) ... [2021-12-17 16:26:22,272 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3561c806 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 04:26:22, skipping insertion in model container [2021-12-17 16:26:22,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 04:26:22" (3/3) ... [2021-12-17 16:26:22,274 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c [2021-12-17 16:26:22,281 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 16:26:22,281 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-12-17 16:26:22,336 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 16:26:22,343 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-17 16:26:22,343 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-12-17 16:26:22,371 INFO L276 IsEmpty]: Start isEmpty. Operand has 570 states, 558 states have (on average 1.7831541218637992) internal successors, (995), 569 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:22,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-12-17 16:26:22,384 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:26:22,385 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] [2021-12-17 16:26:22,385 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:26:22,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:26:22,390 INFO L85 PathProgramCache]: Analyzing trace with hash 646480323, now seen corresponding path program 1 times [2021-12-17 16:26:22,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:26:22,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717440212] [2021-12-17 16:26:22,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:26:22,398 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:26:22,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:26:22,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:26:22,668 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:26:22,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717440212] [2021-12-17 16:26:22,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717440212] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:26:22,669 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:26:22,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 16:26:22,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507500147] [2021-12-17 16:26:22,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:26:22,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 16:26:22,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:26:22,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 16:26:22,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 16:26:22,699 INFO L87 Difference]: Start difference. First operand has 570 states, 558 states have (on average 1.7831541218637992) internal successors, (995), 569 states have internal predecessors, (995), 0 states have call successors, (0), 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 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) [2021-12-17 16:26:23,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:26:23,329 INFO L93 Difference]: Finished difference Result 785 states and 1334 transitions. [2021-12-17 16:26:23,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 16:26:23,331 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 [2021-12-17 16:26:23,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:26:23,344 INFO L225 Difference]: With dead ends: 785 [2021-12-17 16:26:23,345 INFO L226 Difference]: Without dead ends: 503 [2021-12-17 16:26:23,348 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-17 16:26:23,354 INFO L933 BasicCegarLoop]: 489 mSDtfsCounter, 2416 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2416 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-17 16:26:23,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2416 Valid, 551 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-17 16:26:23,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2021-12-17 16:26:23,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 503. [2021-12-17 16:26:23,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 503 states, 492 states have (on average 1.274390243902439) internal successors, (627), 502 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:23,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 627 transitions. [2021-12-17 16:26:23,411 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 627 transitions. Word has length 60 [2021-12-17 16:26:23,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:26:23,412 INFO L470 AbstractCegarLoop]: Abstraction has 503 states and 627 transitions. [2021-12-17 16:26:23,412 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) [2021-12-17 16:26:23,412 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 627 transitions. [2021-12-17 16:26:23,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-12-17 16:26:23,415 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:26:23,415 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] [2021-12-17 16:26:23,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 16:26:23,415 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)] === [2021-12-17 16:26:23,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:26:23,416 INFO L85 PathProgramCache]: Analyzing trace with hash 221242932, now seen corresponding path program 1 times [2021-12-17 16:26:23,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:26:23,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397754912] [2021-12-17 16:26:23,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:26:23,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:26:23,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:26:23,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:26:23,510 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:26:23,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397754912] [2021-12-17 16:26:23,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397754912] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:26:23,510 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:26:23,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 16:26:23,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378773688] [2021-12-17 16:26:23,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:26:23,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 16:26:23,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:26:23,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 16:26:23,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 16:26:23,513 INFO L87 Difference]: Start difference. First operand 503 states and 627 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) [2021-12-17 16:26:23,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:26:23,767 INFO L93 Difference]: Finished difference Result 637 states and 796 transitions. [2021-12-17 16:26:23,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 16:26:23,769 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 [2021-12-17 16:26:23,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:26:23,773 INFO L225 Difference]: With dead ends: 637 [2021-12-17 16:26:23,774 INFO L226 Difference]: Without dead ends: 381 [2021-12-17 16:26:23,777 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-17 16:26:23,778 INFO L933 BasicCegarLoop]: 254 mSDtfsCounter, 1366 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1366 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 16:26:23,779 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1366 Valid, 266 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 16:26:23,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2021-12-17 16:26:23,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 381. [2021-12-17 16:26:23,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 370 states have (on average 1.2864864864864864) internal successors, (476), 380 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:23,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 476 transitions. [2021-12-17 16:26:23,816 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 476 transitions. Word has length 60 [2021-12-17 16:26:23,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:26:23,817 INFO L470 AbstractCegarLoop]: Abstraction has 381 states and 476 transitions. [2021-12-17 16:26:23,817 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) [2021-12-17 16:26:23,818 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 476 transitions. [2021-12-17 16:26:23,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-12-17 16:26:23,821 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:26:23,821 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] [2021-12-17 16:26:23,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 16:26:23,821 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)] === [2021-12-17 16:26:23,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:26:23,822 INFO L85 PathProgramCache]: Analyzing trace with hash -2147344789, now seen corresponding path program 1 times [2021-12-17 16:26:23,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:26:23,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417182791] [2021-12-17 16:26:23,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:26:23,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:26:23,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:26:23,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:26:23,952 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:26:23,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417182791] [2021-12-17 16:26:23,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417182791] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:26:23,952 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:26:23,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 16:26:23,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726193168] [2021-12-17 16:26:23,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:26:23,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 16:26:23,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:26:23,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 16:26:23,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 16:26:23,955 INFO L87 Difference]: Start difference. First operand 381 states and 476 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) [2021-12-17 16:26:24,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:26:24,253 INFO L93 Difference]: Finished difference Result 713 states and 908 transitions. [2021-12-17 16:26:24,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 16:26:24,253 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 [2021-12-17 16:26:24,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:26:24,255 INFO L225 Difference]: With dead ends: 713 [2021-12-17 16:26:24,255 INFO L226 Difference]: Without dead ends: 509 [2021-12-17 16:26:24,256 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-17 16:26:24,258 INFO L933 BasicCegarLoop]: 236 mSDtfsCounter, 1661 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1661 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 16:26:24,260 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1661 Valid, 371 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 16:26:24,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2021-12-17 16:26:24,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 450. [2021-12-17 16:26:24,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 439 states have (on average 1.3416856492027336) internal successors, (589), 449 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:24,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 589 transitions. [2021-12-17 16:26:24,284 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 589 transitions. Word has length 60 [2021-12-17 16:26:24,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:26:24,286 INFO L470 AbstractCegarLoop]: Abstraction has 450 states and 589 transitions. [2021-12-17 16:26:24,296 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) [2021-12-17 16:26:24,296 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 589 transitions. [2021-12-17 16:26:24,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-12-17 16:26:24,297 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:26:24,298 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] [2021-12-17 16:26:24,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-17 16:26:24,298 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)] === [2021-12-17 16:26:24,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:26:24,299 INFO L85 PathProgramCache]: Analyzing trace with hash 604643521, now seen corresponding path program 1 times [2021-12-17 16:26:24,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:26:24,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036569172] [2021-12-17 16:26:24,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:26:24,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:26:24,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:26:24,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:26:24,388 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:26:24,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036569172] [2021-12-17 16:26:24,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036569172] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:26:24,390 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:26:24,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 16:26:24,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232997735] [2021-12-17 16:26:24,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:26:24,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 16:26:24,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:26:24,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 16:26:24,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 16:26:24,395 INFO L87 Difference]: Start difference. First operand 450 states and 589 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:24,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:26:24,544 INFO L93 Difference]: Finished difference Result 606 states and 794 transitions. [2021-12-17 16:26:24,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 16:26:24,544 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2021-12-17 16:26:24,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:26:24,547 INFO L225 Difference]: With dead ends: 606 [2021-12-17 16:26:24,547 INFO L226 Difference]: Without dead ends: 357 [2021-12-17 16:26:24,547 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-17 16:26:24,549 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 902 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 902 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 16:26:24,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [902 Valid, 209 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 16:26:24,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2021-12-17 16:26:24,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 357. [2021-12-17 16:26:24,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 346 states have (on average 1.346820809248555) internal successors, (466), 356 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:24,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 466 transitions. [2021-12-17 16:26:24,567 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 466 transitions. Word has length 62 [2021-12-17 16:26:24,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:26:24,568 INFO L470 AbstractCegarLoop]: Abstraction has 357 states and 466 transitions. [2021-12-17 16:26:24,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:24,569 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 466 transitions. [2021-12-17 16:26:24,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-17 16:26:24,570 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:26:24,570 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] [2021-12-17 16:26:24,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-17 16:26:24,571 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:26:24,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:26:24,573 INFO L85 PathProgramCache]: Analyzing trace with hash -699288056, now seen corresponding path program 1 times [2021-12-17 16:26:24,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:26:24,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405565367] [2021-12-17 16:26:24,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:26:24,573 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:26:24,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:26:24,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:26:24,727 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:26:24,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405565367] [2021-12-17 16:26:24,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405565367] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:26:24,728 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:26:24,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:26:24,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401617770] [2021-12-17 16:26:24,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:26:24,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:26:24,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:26:24,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:26:24,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:26:24,729 INFO L87 Difference]: Start difference. First operand 357 states and 466 transitions. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:25,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:26:25,500 INFO L93 Difference]: Finished difference Result 920 states and 1259 transitions. [2021-12-17 16:26:25,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-17 16:26:25,500 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2021-12-17 16:26:25,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:26:25,504 INFO L225 Difference]: With dead ends: 920 [2021-12-17 16:26:25,504 INFO L226 Difference]: Without dead ends: 776 [2021-12-17 16:26:25,505 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=438, Unknown=0, NotChecked=0, Total=600 [2021-12-17 16:26:25,505 INFO L933 BasicCegarLoop]: 225 mSDtfsCounter, 1845 mSDsluCounter, 896 mSDsCounter, 0 mSdLazyCounter, 811 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1845 SdHoareTripleChecker+Valid, 1121 SdHoareTripleChecker+Invalid, 843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-17 16:26:25,505 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1845 Valid, 1121 Invalid, 843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 811 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-17 16:26:25,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 776 states. [2021-12-17 16:26:25,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 776 to 357. [2021-12-17 16:26:25,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 346 states have (on average 1.3439306358381502) internal successors, (465), 356 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:25,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 465 transitions. [2021-12-17 16:26:25,529 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 465 transitions. Word has length 64 [2021-12-17 16:26:25,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:26:25,529 INFO L470 AbstractCegarLoop]: Abstraction has 357 states and 465 transitions. [2021-12-17 16:26:25,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:25,529 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 465 transitions. [2021-12-17 16:26:25,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-17 16:26:25,530 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:26:25,530 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] [2021-12-17 16:26:25,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-17 16:26:25,531 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:26:25,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:26:25,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1796013608, now seen corresponding path program 1 times [2021-12-17 16:26:25,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:26:25,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051749190] [2021-12-17 16:26:25,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:26:25,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:26:25,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:26:25,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:26:25,683 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:26:25,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051749190] [2021-12-17 16:26:25,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051749190] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:26:25,683 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:26:25,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:26:25,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084513863] [2021-12-17 16:26:25,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:26:25,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:26:25,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:26:25,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:26:25,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:26:25,684 INFO L87 Difference]: Start difference. First operand 357 states and 465 transitions. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:26,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:26:26,301 INFO L93 Difference]: Finished difference Result 915 states and 1258 transitions. [2021-12-17 16:26:26,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:26:26,302 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2021-12-17 16:26:26,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:26:26,305 INFO L225 Difference]: With dead ends: 915 [2021-12-17 16:26:26,305 INFO L226 Difference]: Without dead ends: 795 [2021-12-17 16:26:26,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2021-12-17 16:26:26,307 INFO L933 BasicCegarLoop]: 254 mSDtfsCounter, 1665 mSDsluCounter, 825 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1665 SdHoareTripleChecker+Valid, 1079 SdHoareTripleChecker+Invalid, 784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-17 16:26:26,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1665 Valid, 1079 Invalid, 784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 747 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-17 16:26:26,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 795 states. [2021-12-17 16:26:26,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 795 to 357. [2021-12-17 16:26:26,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 346 states have (on average 1.3410404624277457) internal successors, (464), 356 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:26,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 464 transitions. [2021-12-17 16:26:26,330 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 464 transitions. Word has length 64 [2021-12-17 16:26:26,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:26:26,331 INFO L470 AbstractCegarLoop]: Abstraction has 357 states and 464 transitions. [2021-12-17 16:26:26,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:26,331 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 464 transitions. [2021-12-17 16:26:26,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-17 16:26:26,332 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:26:26,332 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] [2021-12-17 16:26:26,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-17 16:26:26,332 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)] === [2021-12-17 16:26:26,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:26:26,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1577721816, now seen corresponding path program 1 times [2021-12-17 16:26:26,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:26:26,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551587939] [2021-12-17 16:26:26,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:26:26,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:26:26,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:26:26,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:26:26,436 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:26:26,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551587939] [2021-12-17 16:26:26,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551587939] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:26:26,436 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:26:26,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 16:26:26,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727428482] [2021-12-17 16:26:26,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:26:26,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-17 16:26:26,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:26:26,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-17 16:26:26,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-17 16:26:26,438 INFO L87 Difference]: Start difference. First operand 357 states and 464 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:26,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:26:26,746 INFO L93 Difference]: Finished difference Result 724 states and 946 transitions. [2021-12-17 16:26:26,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-17 16:26:26,746 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2021-12-17 16:26:26,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:26:26,748 INFO L225 Difference]: With dead ends: 724 [2021-12-17 16:26:26,748 INFO L226 Difference]: Without dead ends: 531 [2021-12-17 16:26:26,749 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 [2021-12-17 16:26:26,749 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 1129 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1129 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 16:26:26,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1129 Valid, 484 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 16:26:26,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2021-12-17 16:26:26,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 357. [2021-12-17 16:26:26,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 346 states have (on average 1.3381502890173411) internal successors, (463), 356 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:26,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 463 transitions. [2021-12-17 16:26:26,770 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 463 transitions. Word has length 64 [2021-12-17 16:26:26,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:26:26,770 INFO L470 AbstractCegarLoop]: Abstraction has 357 states and 463 transitions. [2021-12-17 16:26:26,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:26,771 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 463 transitions. [2021-12-17 16:26:26,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-17 16:26:26,771 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:26:26,772 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] [2021-12-17 16:26:26,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-17 16:26:26,772 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:26:26,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:26:26,772 INFO L85 PathProgramCache]: Analyzing trace with hash -295025225, now seen corresponding path program 1 times [2021-12-17 16:26:26,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:26:26,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224708438] [2021-12-17 16:26:26,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:26:26,773 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:26:26,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:26:26,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:26:26,872 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:26:26,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224708438] [2021-12-17 16:26:26,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224708438] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:26:26,872 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:26:26,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:26:26,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704788042] [2021-12-17 16:26:26,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:26:26,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:26:26,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:26:26,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:26:26,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:26:26,879 INFO L87 Difference]: Start difference. First operand 357 states and 463 transitions. Second operand has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 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) [2021-12-17 16:26:27,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:26:27,543 INFO L93 Difference]: Finished difference Result 883 states and 1207 transitions. [2021-12-17 16:26:27,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:26:27,544 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 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 [2021-12-17 16:26:27,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:26:27,547 INFO L225 Difference]: With dead ends: 883 [2021-12-17 16:26:27,547 INFO L226 Difference]: Without dead ends: 774 [2021-12-17 16:26:27,547 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2021-12-17 16:26:27,548 INFO L933 BasicCegarLoop]: 234 mSDtfsCounter, 1323 mSDsluCounter, 1068 mSDsCounter, 0 mSdLazyCounter, 895 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1323 SdHoareTripleChecker+Valid, 1302 SdHoareTripleChecker+Invalid, 943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 895 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-17 16:26:27,548 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1323 Valid, 1302 Invalid, 943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 895 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-17 16:26:27,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2021-12-17 16:26:27,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 357. [2021-12-17 16:26:27,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 346 states have (on average 1.3352601156069364) internal successors, (462), 356 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:27,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 462 transitions. [2021-12-17 16:26:27,572 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 462 transitions. Word has length 65 [2021-12-17 16:26:27,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:26:27,573 INFO L470 AbstractCegarLoop]: Abstraction has 357 states and 462 transitions. [2021-12-17 16:26:27,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 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) [2021-12-17 16:26:27,573 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 462 transitions. [2021-12-17 16:26:27,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-17 16:26:27,574 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:26:27,574 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] [2021-12-17 16:26:27,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-17 16:26:27,574 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:26:27,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:26:27,575 INFO L85 PathProgramCache]: Analyzing trace with hash -168692467, now seen corresponding path program 1 times [2021-12-17 16:26:27,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:26:27,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327163888] [2021-12-17 16:26:27,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:26:27,575 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:26:27,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:26:27,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:26:27,683 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:26:27,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327163888] [2021-12-17 16:26:27,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327163888] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:26:27,684 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:26:27,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:26:27,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075732513] [2021-12-17 16:26:27,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:26:27,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:26:27,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:26:27,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:26:27,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:26:27,686 INFO L87 Difference]: Start difference. First operand 357 states and 462 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) [2021-12-17 16:26:28,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:26:28,371 INFO L93 Difference]: Finished difference Result 814 states and 1101 transitions. [2021-12-17 16:26:28,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:26:28,372 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 [2021-12-17 16:26:28,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:26:28,375 INFO L225 Difference]: With dead ends: 814 [2021-12-17 16:26:28,375 INFO L226 Difference]: Without dead ends: 795 [2021-12-17 16:26:28,376 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2021-12-17 16:26:28,376 INFO L933 BasicCegarLoop]: 266 mSDtfsCounter, 1299 mSDsluCounter, 1170 mSDsCounter, 0 mSdLazyCounter, 938 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1299 SdHoareTripleChecker+Valid, 1436 SdHoareTripleChecker+Invalid, 968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-17 16:26:28,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1299 Valid, 1436 Invalid, 968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 938 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-17 16:26:28,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 795 states. [2021-12-17 16:26:28,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 795 to 357. [2021-12-17 16:26:28,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 346 states have (on average 1.329479768786127) internal successors, (460), 356 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:28,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 460 transitions. [2021-12-17 16:26:28,403 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 460 transitions. Word has length 66 [2021-12-17 16:26:28,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:26:28,404 INFO L470 AbstractCegarLoop]: Abstraction has 357 states and 460 transitions. [2021-12-17 16:26:28,404 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) [2021-12-17 16:26:28,404 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 460 transitions. [2021-12-17 16:26:28,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-17 16:26:28,405 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:26:28,405 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] [2021-12-17 16:26:28,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-17 16:26:28,405 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:26:28,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:26:28,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1424145869, now seen corresponding path program 1 times [2021-12-17 16:26:28,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:26:28,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33853238] [2021-12-17 16:26:28,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:26:28,406 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:26:28,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:26:28,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:26:28,534 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:26:28,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33853238] [2021-12-17 16:26:28,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33853238] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:26:28,535 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:26:28,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:26:28,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148172685] [2021-12-17 16:26:28,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:26:28,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:26:28,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:26:28,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:26:28,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:26:28,537 INFO L87 Difference]: Start difference. First operand 357 states and 460 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) [2021-12-17 16:26:29,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:26:29,198 INFO L93 Difference]: Finished difference Result 780 states and 1048 transitions. [2021-12-17 16:26:29,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:26:29,199 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 [2021-12-17 16:26:29,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:26:29,201 INFO L225 Difference]: With dead ends: 780 [2021-12-17 16:26:29,202 INFO L226 Difference]: Without dead ends: 774 [2021-12-17 16:26:29,202 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2021-12-17 16:26:29,203 INFO L933 BasicCegarLoop]: 255 mSDtfsCounter, 1809 mSDsluCounter, 806 mSDsCounter, 0 mSdLazyCounter, 730 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1809 SdHoareTripleChecker+Valid, 1061 SdHoareTripleChecker+Invalid, 802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 730 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-17 16:26:29,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1809 Valid, 1061 Invalid, 802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 730 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-17 16:26:29,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2021-12-17 16:26:29,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 357. [2021-12-17 16:26:29,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 346 states have (on average 1.323699421965318) internal successors, (458), 356 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:29,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 458 transitions. [2021-12-17 16:26:29,230 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 458 transitions. Word has length 66 [2021-12-17 16:26:29,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:26:29,230 INFO L470 AbstractCegarLoop]: Abstraction has 357 states and 458 transitions. [2021-12-17 16:26:29,230 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) [2021-12-17 16:26:29,230 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 458 transitions. [2021-12-17 16:26:29,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-17 16:26:29,231 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:26:29,231 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] [2021-12-17 16:26:29,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-17 16:26:29,232 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:26:29,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:26:29,232 INFO L85 PathProgramCache]: Analyzing trace with hash -155488627, now seen corresponding path program 1 times [2021-12-17 16:26:29,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:26:29,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375402876] [2021-12-17 16:26:29,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:26:29,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:26:29,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:26:29,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:26:29,349 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:26:29,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375402876] [2021-12-17 16:26:29,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375402876] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:26:29,349 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:26:29,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:26:29,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958211793] [2021-12-17 16:26:29,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:26:29,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:26:29,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:26:29,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:26:29,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:26:29,352 INFO L87 Difference]: Start difference. First operand 357 states and 458 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) [2021-12-17 16:26:29,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:26:29,908 INFO L93 Difference]: Finished difference Result 811 states and 1110 transitions. [2021-12-17 16:26:29,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-17 16:26:29,909 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 [2021-12-17 16:26:29,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:26:29,911 INFO L225 Difference]: With dead ends: 811 [2021-12-17 16:26:29,911 INFO L226 Difference]: Without dead ends: 634 [2021-12-17 16:26:29,912 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=133, Invalid=373, Unknown=0, NotChecked=0, Total=506 [2021-12-17 16:26:29,913 INFO L933 BasicCegarLoop]: 296 mSDtfsCounter, 1446 mSDsluCounter, 876 mSDsCounter, 0 mSdLazyCounter, 767 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1446 SdHoareTripleChecker+Valid, 1172 SdHoareTripleChecker+Invalid, 794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-17 16:26:29,913 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1446 Valid, 1172 Invalid, 794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 767 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-17 16:26:29,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2021-12-17 16:26:29,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 357. [2021-12-17 16:26:29,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 346 states have (on average 1.3179190751445087) internal successors, (456), 356 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:29,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 456 transitions. [2021-12-17 16:26:29,939 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 456 transitions. Word has length 66 [2021-12-17 16:26:29,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:26:29,940 INFO L470 AbstractCegarLoop]: Abstraction has 357 states and 456 transitions. [2021-12-17 16:26:29,940 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) [2021-12-17 16:26:29,940 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 456 transitions. [2021-12-17 16:26:29,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-17 16:26:29,941 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:26:29,941 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] [2021-12-17 16:26:29,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-17 16:26:29,941 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)] === [2021-12-17 16:26:29,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:26:29,942 INFO L85 PathProgramCache]: Analyzing trace with hash -131812051, now seen corresponding path program 1 times [2021-12-17 16:26:29,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:26:29,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61181892] [2021-12-17 16:26:29,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:26:29,942 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:26:29,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:26:30,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:26:30,074 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:26:30,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61181892] [2021-12-17 16:26:30,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61181892] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:26:30,075 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:26:30,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:26:30,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491278902] [2021-12-17 16:26:30,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:26:30,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:26:30,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:26:30,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:26:30,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:26:30,077 INFO L87 Difference]: Start difference. First operand 357 states and 456 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) [2021-12-17 16:26:30,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:26:30,700 INFO L93 Difference]: Finished difference Result 886 states and 1203 transitions. [2021-12-17 16:26:30,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:26:30,701 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 [2021-12-17 16:26:30,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:26:30,703 INFO L225 Difference]: With dead ends: 886 [2021-12-17 16:26:30,703 INFO L226 Difference]: Without dead ends: 774 [2021-12-17 16:26:30,704 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2021-12-17 16:26:30,705 INFO L933 BasicCegarLoop]: 259 mSDtfsCounter, 1785 mSDsluCounter, 813 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1785 SdHoareTripleChecker+Valid, 1072 SdHoareTripleChecker+Invalid, 795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-17 16:26:30,705 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1785 Valid, 1072 Invalid, 795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 723 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-17 16:26:30,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2021-12-17 16:26:30,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 357. [2021-12-17 16:26:30,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 346 states have (on average 1.3150289017341041) internal successors, (455), 356 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:30,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 455 transitions. [2021-12-17 16:26:30,736 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 455 transitions. Word has length 66 [2021-12-17 16:26:30,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:26:30,737 INFO L470 AbstractCegarLoop]: Abstraction has 357 states and 455 transitions. [2021-12-17 16:26:30,737 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) [2021-12-17 16:26:30,737 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 455 transitions. [2021-12-17 16:26:30,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-17 16:26:30,738 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:26:30,738 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] [2021-12-17 16:26:30,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-17 16:26:30,739 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:26:30,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:26:30,739 INFO L85 PathProgramCache]: Analyzing trace with hash 2058619373, now seen corresponding path program 1 times [2021-12-17 16:26:30,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:26:30,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563208952] [2021-12-17 16:26:30,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:26:30,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:26:30,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:26:30,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:26:30,850 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:26:30,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563208952] [2021-12-17 16:26:30,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563208952] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:26:30,851 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:26:30,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:26:30,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13616521] [2021-12-17 16:26:30,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:26:30,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:26:30,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:26:30,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:26:30,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:26:30,853 INFO L87 Difference]: Start difference. First operand 357 states and 455 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) [2021-12-17 16:26:31,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:26:31,462 INFO L93 Difference]: Finished difference Result 920 states and 1252 transitions. [2021-12-17 16:26:31,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:26:31,462 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 [2021-12-17 16:26:31,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:26:31,465 INFO L225 Difference]: With dead ends: 920 [2021-12-17 16:26:31,465 INFO L226 Difference]: Without dead ends: 795 [2021-12-17 16:26:31,466 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-12-17 16:26:31,467 INFO L933 BasicCegarLoop]: 347 mSDtfsCounter, 1845 mSDsluCounter, 950 mSDsCounter, 0 mSdLazyCounter, 856 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1845 SdHoareTripleChecker+Valid, 1297 SdHoareTripleChecker+Invalid, 897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-17 16:26:31,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1845 Valid, 1297 Invalid, 897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 856 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-17 16:26:31,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 795 states. [2021-12-17 16:26:31,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 795 to 357. [2021-12-17 16:26:31,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 346 states have (on average 1.3121387283236994) internal successors, (454), 356 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:31,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 454 transitions. [2021-12-17 16:26:31,497 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 454 transitions. Word has length 66 [2021-12-17 16:26:31,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:26:31,498 INFO L470 AbstractCegarLoop]: Abstraction has 357 states and 454 transitions. [2021-12-17 16:26:31,498 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) [2021-12-17 16:26:31,498 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 454 transitions. [2021-12-17 16:26:31,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-17 16:26:31,499 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:26:31,499 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] [2021-12-17 16:26:31,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-17 16:26:31,500 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:26:31,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:26:31,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1833305997, now seen corresponding path program 1 times [2021-12-17 16:26:31,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:26:31,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25593898] [2021-12-17 16:26:31,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:26:31,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:26:31,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:26:31,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:26:31,583 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:26:31,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25593898] [2021-12-17 16:26:31,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25593898] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:26:31,584 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:26:31,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:26:31,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375216597] [2021-12-17 16:26:31,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:26:31,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:26:31,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:26:31,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:26:31,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:26:31,586 INFO L87 Difference]: Start difference. First operand 357 states and 454 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) [2021-12-17 16:26:32,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:26:32,142 INFO L93 Difference]: Finished difference Result 780 states and 1042 transitions. [2021-12-17 16:26:32,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:26:32,142 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 [2021-12-17 16:26:32,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:26:32,144 INFO L225 Difference]: With dead ends: 780 [2021-12-17 16:26:32,144 INFO L226 Difference]: Without dead ends: 774 [2021-12-17 16:26:32,145 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-12-17 16:26:32,145 INFO L933 BasicCegarLoop]: 317 mSDtfsCounter, 1873 mSDsluCounter, 884 mSDsCounter, 0 mSdLazyCounter, 815 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1873 SdHoareTripleChecker+Valid, 1201 SdHoareTripleChecker+Invalid, 883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 815 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-17 16:26:32,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1873 Valid, 1201 Invalid, 883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 815 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-17 16:26:32,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2021-12-17 16:26:32,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 357. [2021-12-17 16:26:32,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 346 states have (on average 1.3092485549132948) internal successors, (453), 356 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:32,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 453 transitions. [2021-12-17 16:26:32,183 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 453 transitions. Word has length 66 [2021-12-17 16:26:32,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:26:32,183 INFO L470 AbstractCegarLoop]: Abstraction has 357 states and 453 transitions. [2021-12-17 16:26:32,183 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) [2021-12-17 16:26:32,183 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 453 transitions. [2021-12-17 16:26:32,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-17 16:26:32,184 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:26:32,184 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] [2021-12-17 16:26:32,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-17 16:26:32,185 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:26:32,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:26:32,185 INFO L85 PathProgramCache]: Analyzing trace with hash 817551922, now seen corresponding path program 1 times [2021-12-17 16:26:32,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:26:32,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850089740] [2021-12-17 16:26:32,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:26:32,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:26:32,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:26:32,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:26:32,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:26:32,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850089740] [2021-12-17 16:26:32,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850089740] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:26:32,481 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:26:32,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-17 16:26:32,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615832257] [2021-12-17 16:26:32,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:26:32,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-17 16:26:32,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:26:32,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-17 16:26:32,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-12-17 16:26:32,483 INFO L87 Difference]: Start difference. First operand 357 states and 453 transitions. Second operand has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:33,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:26:33,431 INFO L93 Difference]: Finished difference Result 981 states and 1286 transitions. [2021-12-17 16:26:33,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:26:33,431 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2021-12-17 16:26:33,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:26:33,434 INFO L225 Difference]: With dead ends: 981 [2021-12-17 16:26:33,434 INFO L226 Difference]: Without dead ends: 873 [2021-12-17 16:26:33,439 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 [2021-12-17 16:26:33,440 INFO L933 BasicCegarLoop]: 324 mSDtfsCounter, 2119 mSDsluCounter, 2068 mSDsCounter, 0 mSdLazyCounter, 739 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2119 SdHoareTripleChecker+Valid, 2392 SdHoareTripleChecker+Invalid, 834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 739 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-17 16:26:33,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2119 Valid, 2392 Invalid, 834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 739 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-17 16:26:33,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 873 states. [2021-12-17 16:26:33,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 873 to 347. [2021-12-17 16:26:33,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 336 states have (on average 1.3035714285714286) internal successors, (438), 346 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:33,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 438 transitions. [2021-12-17 16:26:33,497 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 438 transitions. Word has length 67 [2021-12-17 16:26:33,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:26:33,497 INFO L470 AbstractCegarLoop]: Abstraction has 347 states and 438 transitions. [2021-12-17 16:26:33,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:33,498 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 438 transitions. [2021-12-17 16:26:33,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-17 16:26:33,498 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:26:33,498 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] [2021-12-17 16:26:33,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-17 16:26:33,499 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:26:33,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:26:33,499 INFO L85 PathProgramCache]: Analyzing trace with hash 167509874, now seen corresponding path program 1 times [2021-12-17 16:26:33,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:26:33,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441079750] [2021-12-17 16:26:33,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:26:33,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:26:33,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:26:33,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:26:33,766 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:26:33,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441079750] [2021-12-17 16:26:33,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441079750] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:26:33,766 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:26:33,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 16:26:33,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699591284] [2021-12-17 16:26:33,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:26:33,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 16:26:33,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:26:33,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 16:26:33,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-17 16:26:33,767 INFO L87 Difference]: Start difference. First operand 347 states and 438 transitions. Second operand has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:34,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:26:34,429 INFO L93 Difference]: Finished difference Result 889 states and 1182 transitions. [2021-12-17 16:26:34,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-17 16:26:34,429 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2021-12-17 16:26:34,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:26:34,432 INFO L225 Difference]: With dead ends: 889 [2021-12-17 16:26:34,432 INFO L226 Difference]: Without dead ends: 713 [2021-12-17 16:26:34,433 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2021-12-17 16:26:34,433 INFO L933 BasicCegarLoop]: 359 mSDtfsCounter, 1691 mSDsluCounter, 785 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1691 SdHoareTripleChecker+Valid, 1144 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 16:26:34,434 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1691 Valid, 1144 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 16:26:34,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2021-12-17 16:26:34,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 277. [2021-12-17 16:26:34,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 270 states have (on average 1.3111111111111111) internal successors, (354), 276 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:34,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 354 transitions. [2021-12-17 16:26:34,483 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 354 transitions. Word has length 67 [2021-12-17 16:26:34,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:26:34,483 INFO L470 AbstractCegarLoop]: Abstraction has 277 states and 354 transitions. [2021-12-17 16:26:34,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:34,484 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 354 transitions. [2021-12-17 16:26:34,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-17 16:26:34,485 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:26:34,485 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] [2021-12-17 16:26:34,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-17 16:26:34,485 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)] === [2021-12-17 16:26:34,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:26:34,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1968382194, now seen corresponding path program 1 times [2021-12-17 16:26:34,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:26:34,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710132049] [2021-12-17 16:26:34,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:26:34,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:26:34,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:26:34,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:26:34,965 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:26:34,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710132049] [2021-12-17 16:26:34,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710132049] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:26:34,965 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:26:34,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-12-17 16:26:34,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393852833] [2021-12-17 16:26:34,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:26:34,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-17 16:26:34,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:26:34,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-17 16:26:34,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2021-12-17 16:26:34,967 INFO L87 Difference]: Start difference. First operand 277 states and 354 transitions. Second operand has 16 states, 16 states have (on average 4.25) internal successors, (68), 16 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) [2021-12-17 16:26:36,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:26:36,237 INFO L93 Difference]: Finished difference Result 724 states and 959 transitions. [2021-12-17 16:26:36,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-17 16:26:36,238 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.25) internal successors, (68), 16 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 [2021-12-17 16:26:36,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:26:36,240 INFO L225 Difference]: With dead ends: 724 [2021-12-17 16:26:36,240 INFO L226 Difference]: Without dead ends: 614 [2021-12-17 16:26:36,241 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=215, Invalid=655, Unknown=0, NotChecked=0, Total=870 [2021-12-17 16:26:36,241 INFO L933 BasicCegarLoop]: 197 mSDtfsCounter, 1651 mSDsluCounter, 1949 mSDsCounter, 0 mSdLazyCounter, 739 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1651 SdHoareTripleChecker+Valid, 2146 SdHoareTripleChecker+Invalid, 826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 739 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-17 16:26:36,241 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1651 Valid, 2146 Invalid, 826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 739 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-17 16:26:36,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2021-12-17 16:26:36,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 275. [2021-12-17 16:26:36,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 268 states have (on average 1.3059701492537314) internal successors, (350), 274 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:36,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 350 transitions. [2021-12-17 16:26:36,276 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 350 transitions. Word has length 68 [2021-12-17 16:26:36,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:26:36,276 INFO L470 AbstractCegarLoop]: Abstraction has 275 states and 350 transitions. [2021-12-17 16:26:36,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.25) internal successors, (68), 16 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) [2021-12-17 16:26:36,277 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 350 transitions. [2021-12-17 16:26:36,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-17 16:26:36,278 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:26:36,278 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] [2021-12-17 16:26:36,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-17 16:26:36,278 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:26:36,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:26:36,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1424994738, now seen corresponding path program 1 times [2021-12-17 16:26:36,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:26:36,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965057085] [2021-12-17 16:26:36,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:26:36,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:26:36,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:26:36,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:26:36,583 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:26:36,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965057085] [2021-12-17 16:26:36,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965057085] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:26:36,583 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:26:36,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-17 16:26:36,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535763879] [2021-12-17 16:26:36,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:26:36,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-17 16:26:36,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:26:36,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-17 16:26:36,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-12-17 16:26:36,584 INFO L87 Difference]: Start difference. First operand 275 states and 350 transitions. Second operand has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 13 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) [2021-12-17 16:26:37,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:26:37,365 INFO L93 Difference]: Finished difference Result 727 states and 959 transitions. [2021-12-17 16:26:37,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-17 16:26:37,366 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 13 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 [2021-12-17 16:26:37,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:26:37,368 INFO L225 Difference]: With dead ends: 727 [2021-12-17 16:26:37,368 INFO L226 Difference]: Without dead ends: 723 [2021-12-17 16:26:37,369 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=158, Invalid=492, Unknown=0, NotChecked=0, Total=650 [2021-12-17 16:26:37,369 INFO L933 BasicCegarLoop]: 208 mSDtfsCounter, 1645 mSDsluCounter, 1092 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1645 SdHoareTripleChecker+Valid, 1300 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 16:26:37,369 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1645 Valid, 1300 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 16:26:37,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2021-12-17 16:26:37,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 271. [2021-12-17 16:26:37,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 265 states have (on average 1.3056603773584905) internal successors, (346), 270 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:37,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 346 transitions. [2021-12-17 16:26:37,416 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 346 transitions. Word has length 68 [2021-12-17 16:26:37,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:26:37,417 INFO L470 AbstractCegarLoop]: Abstraction has 271 states and 346 transitions. [2021-12-17 16:26:37,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 13 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) [2021-12-17 16:26:37,417 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 346 transitions. [2021-12-17 16:26:37,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-17 16:26:37,418 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:26:37,418 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] [2021-12-17 16:26:37,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-17 16:26:37,418 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:26:37,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:26:37,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1956272974, now seen corresponding path program 1 times [2021-12-17 16:26:37,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:26:37,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212873765] [2021-12-17 16:26:37,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:26:37,419 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:26:37,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:26:37,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:26:37,822 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:26:37,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212873765] [2021-12-17 16:26:37,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212873765] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:26:37,822 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:26:37,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-12-17 16:26:37,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115390132] [2021-12-17 16:26:37,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:26:37,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-17 16:26:37,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:26:37,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-17 16:26:37,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=370, Unknown=0, NotChecked=0, Total=420 [2021-12-17 16:26:37,824 INFO L87 Difference]: Start difference. First operand 271 states and 346 transitions. Second operand has 21 states, 21 states have (on average 3.238095238095238) internal successors, (68), 21 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) [2021-12-17 16:26:38,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:26:38,690 INFO L93 Difference]: Finished difference Result 305 states and 381 transitions. [2021-12-17 16:26:38,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-17 16:26:38,691 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.238095238095238) internal successors, (68), 21 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 [2021-12-17 16:26:38,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:26:38,692 INFO L225 Difference]: With dead ends: 305 [2021-12-17 16:26:38,692 INFO L226 Difference]: Without dead ends: 298 [2021-12-17 16:26:38,693 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=253, Invalid=1229, Unknown=0, NotChecked=0, Total=1482 [2021-12-17 16:26:38,693 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 457 mSDsluCounter, 2073 mSDsCounter, 0 mSdLazyCounter, 1121 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 2253 SdHoareTripleChecker+Invalid, 1167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-17 16:26:38,693 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [457 Valid, 2253 Invalid, 1167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1121 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-17 16:26:38,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2021-12-17 16:26:38,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 278. [2021-12-17 16:26:38,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 272 states have (on average 1.3051470588235294) internal successors, (355), 277 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:38,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 355 transitions. [2021-12-17 16:26:38,754 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 355 transitions. Word has length 68 [2021-12-17 16:26:38,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:26:38,754 INFO L470 AbstractCegarLoop]: Abstraction has 278 states and 355 transitions. [2021-12-17 16:26:38,754 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.238095238095238) internal successors, (68), 21 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) [2021-12-17 16:26:38,755 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 355 transitions. [2021-12-17 16:26:38,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-12-17 16:26:38,755 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:26:38,755 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] [2021-12-17 16:26:38,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-17 16:26:38,756 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)] === [2021-12-17 16:26:38,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:26:38,756 INFO L85 PathProgramCache]: Analyzing trace with hash 859380364, now seen corresponding path program 1 times [2021-12-17 16:26:38,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:26:38,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033834200] [2021-12-17 16:26:38,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:26:38,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:26:38,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:26:39,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:26:39,013 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:26:39,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033834200] [2021-12-17 16:26:39,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033834200] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:26:39,013 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:26:39,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-17 16:26:39,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099921449] [2021-12-17 16:26:39,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:26:39,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-17 16:26:39,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:26:39,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-17 16:26:39,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-17 16:26:39,014 INFO L87 Difference]: Start difference. First operand 278 states and 355 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) [2021-12-17 16:26:39,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:26:39,493 INFO L93 Difference]: Finished difference Result 455 states and 599 transitions. [2021-12-17 16:26:39,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-17 16:26:39,494 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 [2021-12-17 16:26:39,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:26:39,495 INFO L225 Difference]: With dead ends: 455 [2021-12-17 16:26:39,495 INFO L226 Difference]: Without dead ends: 417 [2021-12-17 16:26:39,496 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2021-12-17 16:26:39,497 INFO L933 BasicCegarLoop]: 286 mSDtfsCounter, 730 mSDsluCounter, 1442 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 1728 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 16:26:39,497 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [730 Valid, 1728 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 16:26:39,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2021-12-17 16:26:39,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 240. [2021-12-17 16:26:39,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 236 states have (on average 1.3135593220338984) internal successors, (310), 239 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:39,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 310 transitions. [2021-12-17 16:26:39,536 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 310 transitions. Word has length 69 [2021-12-17 16:26:39,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:26:39,536 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 310 transitions. [2021-12-17 16:26:39,537 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) [2021-12-17 16:26:39,537 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 310 transitions. [2021-12-17 16:26:39,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-12-17 16:26:39,537 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:26:39,537 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] [2021-12-17 16:26:39,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-17 16:26:39,537 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:26:39,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:26:39,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1452889883, now seen corresponding path program 1 times [2021-12-17 16:26:39,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:26:39,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879718412] [2021-12-17 16:26:39,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:26:39,539 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:26:39,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:26:39,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:26:39,790 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:26:39,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879718412] [2021-12-17 16:26:39,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879718412] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:26:39,791 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:26:39,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-17 16:26:39,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798918129] [2021-12-17 16:26:39,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:26:39,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-17 16:26:39,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:26:39,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-17 16:26:39,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-12-17 16:26:39,792 INFO L87 Difference]: Start difference. First operand 240 states and 310 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) [2021-12-17 16:26:40,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:26:40,553 INFO L93 Difference]: Finished difference Result 786 states and 1085 transitions. [2021-12-17 16:26:40,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 16:26:40,553 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 [2021-12-17 16:26:40,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:26:40,555 INFO L225 Difference]: With dead ends: 786 [2021-12-17 16:26:40,555 INFO L226 Difference]: Without dead ends: 659 [2021-12-17 16:26:40,555 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 [2021-12-17 16:26:40,556 INFO L933 BasicCegarLoop]: 425 mSDtfsCounter, 804 mSDsluCounter, 1991 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 804 SdHoareTripleChecker+Valid, 2416 SdHoareTripleChecker+Invalid, 470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 16:26:40,556 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [804 Valid, 2416 Invalid, 470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 16:26:40,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2021-12-17 16:26:40,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 219. [2021-12-17 16:26:40,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 217 states have (on average 1.304147465437788) internal successors, (283), 218 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:40,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 283 transitions. [2021-12-17 16:26:40,602 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 283 transitions. Word has length 69 [2021-12-17 16:26:40,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:26:40,603 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 283 transitions. [2021-12-17 16:26:40,603 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) [2021-12-17 16:26:40,603 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 283 transitions. [2021-12-17 16:26:40,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-12-17 16:26:40,604 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:26:40,604 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] [2021-12-17 16:26:40,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-17 16:26:40,604 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)] === [2021-12-17 16:26:40,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:26:40,605 INFO L85 PathProgramCache]: Analyzing trace with hash -957086542, now seen corresponding path program 1 times [2021-12-17 16:26:40,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:26:40,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038633201] [2021-12-17 16:26:40,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:26:40,606 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:26:40,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:26:40,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:26:40,686 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:26:40,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038633201] [2021-12-17 16:26:40,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038633201] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:26:40,686 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:26:40,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:26:40,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297018874] [2021-12-17 16:26:40,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:26:40,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:26:40,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:26:40,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:26:40,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:26:40,688 INFO L87 Difference]: Start difference. First operand 219 states and 283 transitions. Second operand has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 8 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) [2021-12-17 16:26:41,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:26:41,046 INFO L93 Difference]: Finished difference Result 519 states and 701 transitions. [2021-12-17 16:26:41,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-17 16:26:41,047 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 8 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 [2021-12-17 16:26:41,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:26:41,049 INFO L225 Difference]: With dead ends: 519 [2021-12-17 16:26:41,049 INFO L226 Difference]: Without dead ends: 379 [2021-12-17 16:26:41,050 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 [2021-12-17 16:26:41,052 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 613 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 613 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 16:26:41,052 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [613 Valid, 544 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 16:26:41,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2021-12-17 16:26:41,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 219. [2021-12-17 16:26:41,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 217 states have (on average 1.294930875576037) internal successors, (281), 218 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:41,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 281 transitions. [2021-12-17 16:26:41,094 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 281 transitions. Word has length 70 [2021-12-17 16:26:41,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:26:41,095 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 281 transitions. [2021-12-17 16:26:41,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 8 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) [2021-12-17 16:26:41,095 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 281 transitions. [2021-12-17 16:26:41,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-12-17 16:26:41,096 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:26:41,096 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] [2021-12-17 16:26:41,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-17 16:26:41,096 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:26:41,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:26:41,097 INFO L85 PathProgramCache]: Analyzing trace with hash -918116841, now seen corresponding path program 1 times [2021-12-17 16:26:41,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:26:41,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779166182] [2021-12-17 16:26:41,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:26:41,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:26:41,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:26:41,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:26:41,654 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:26:41,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779166182] [2021-12-17 16:26:41,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779166182] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:26:41,655 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:26:41,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-12-17 16:26:41,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053239243] [2021-12-17 16:26:41,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:26:41,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-12-17 16:26:41,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:26:41,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-12-17 16:26:41,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=441, Unknown=0, NotChecked=0, Total=506 [2021-12-17 16:26:41,657 INFO L87 Difference]: Start difference. First operand 219 states and 281 transitions. Second operand has 23 states, 23 states have (on average 3.130434782608696) internal successors, (72), 23 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:43,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:26:43,148 INFO L93 Difference]: Finished difference Result 812 states and 1137 transitions. [2021-12-17 16:26:43,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-17 16:26:43,148 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.130434782608696) internal successors, (72), 23 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2021-12-17 16:26:43,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:26:43,150 INFO L225 Difference]: With dead ends: 812 [2021-12-17 16:26:43,151 INFO L226 Difference]: Without dead ends: 806 [2021-12-17 16:26:43,151 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=299, Invalid=1423, Unknown=0, NotChecked=0, Total=1722 [2021-12-17 16:26:43,152 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 853 mSDsluCounter, 2538 mSDsCounter, 0 mSdLazyCounter, 1201 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 853 SdHoareTripleChecker+Valid, 2737 SdHoareTripleChecker+Invalid, 1245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-17 16:26:43,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [853 Valid, 2737 Invalid, 1245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1201 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-17 16:26:43,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2021-12-17 16:26:43,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 232. [2021-12-17 16:26:43,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 230 states have (on average 1.291304347826087) internal successors, (297), 231 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:43,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 297 transitions. [2021-12-17 16:26:43,197 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 297 transitions. Word has length 72 [2021-12-17 16:26:43,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:26:43,197 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 297 transitions. [2021-12-17 16:26:43,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.130434782608696) internal successors, (72), 23 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:43,198 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 297 transitions. [2021-12-17 16:26:43,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-12-17 16:26:43,198 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:26:43,198 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] [2021-12-17 16:26:43,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-17 16:26:43,198 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)] === [2021-12-17 16:26:43,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:26:43,199 INFO L85 PathProgramCache]: Analyzing trace with hash 370177890, now seen corresponding path program 1 times [2021-12-17 16:26:43,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:26:43,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231904918] [2021-12-17 16:26:43,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:26:43,200 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:26:43,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:26:43,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:26:43,474 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:26:43,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231904918] [2021-12-17 16:26:43,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231904918] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:26:43,474 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:26:43,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-17 16:26:43,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055760982] [2021-12-17 16:26:43,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:26:43,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-17 16:26:43,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:26:43,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-17 16:26:43,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-12-17 16:26:43,476 INFO L87 Difference]: Start difference. First operand 232 states and 297 transitions. Second operand has 13 states, 13 states have (on average 5.615384615384615) internal successors, (73), 13 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:44,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:26:44,470 INFO L93 Difference]: Finished difference Result 1064 states and 1499 transitions. [2021-12-17 16:26:44,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-17 16:26:44,471 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.615384615384615) internal successors, (73), 13 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2021-12-17 16:26:44,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:26:44,474 INFO L225 Difference]: With dead ends: 1064 [2021-12-17 16:26:44,474 INFO L226 Difference]: Without dead ends: 1058 [2021-12-17 16:26:44,475 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2021-12-17 16:26:44,475 INFO L933 BasicCegarLoop]: 364 mSDtfsCounter, 1030 mSDsluCounter, 2463 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1030 SdHoareTripleChecker+Valid, 2827 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-17 16:26:44,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1030 Valid, 2827 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-17 16:26:44,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1058 states. [2021-12-17 16:26:44,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1058 to 213. [2021-12-17 16:26:44,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 212 states have (on average 1.2924528301886793) internal successors, (274), 212 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:44,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 274 transitions. [2021-12-17 16:26:44,526 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 274 transitions. Word has length 73 [2021-12-17 16:26:44,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:26:44,526 INFO L470 AbstractCegarLoop]: Abstraction has 213 states and 274 transitions. [2021-12-17 16:26:44,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.615384615384615) internal successors, (73), 13 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:44,526 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 274 transitions. [2021-12-17 16:26:44,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-17 16:26:44,527 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:26:44,527 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:26:44,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-17 16:26:44,528 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:26:44,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:26:44,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1364481581, now seen corresponding path program 1 times [2021-12-17 16:26:44,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:26:44,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644138380] [2021-12-17 16:26:44,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:26:44,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:26:44,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:26:44,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:26:44,583 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:26:44,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644138380] [2021-12-17 16:26:44,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644138380] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:26:44,584 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:26:44,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 16:26:44,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651043284] [2021-12-17 16:26:44,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:26:44,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 16:26:44,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:26:44,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 16:26:44,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 16:26:44,586 INFO L87 Difference]: Start difference. First operand 213 states and 274 transitions. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:44,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:26:44,890 INFO L93 Difference]: Finished difference Result 1061 states and 1538 transitions. [2021-12-17 16:26:44,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 16:26:44,891 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-12-17 16:26:44,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:26:44,894 INFO L225 Difference]: With dead ends: 1061 [2021-12-17 16:26:44,894 INFO L226 Difference]: Without dead ends: 955 [2021-12-17 16:26:44,895 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-17 16:26:44,899 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 906 mSDsluCounter, 796 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 906 SdHoareTripleChecker+Valid, 955 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:26:44,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [906 Valid, 955 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:26:44,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 955 states. [2021-12-17 16:26:44,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 955 to 317. [2021-12-17 16:26:44,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 316 states have (on average 1.3512658227848102) internal successors, (427), 316 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:44,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 427 transitions. [2021-12-17 16:26:44,971 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 427 transitions. Word has length 96 [2021-12-17 16:26:44,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:26:44,971 INFO L470 AbstractCegarLoop]: Abstraction has 317 states and 427 transitions. [2021-12-17 16:26:44,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:44,971 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 427 transitions. [2021-12-17 16:26:44,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-17 16:26:44,972 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:26:44,973 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:26:44,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-17 16:26:44,973 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:26:44,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:26:44,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1426852022, now seen corresponding path program 1 times [2021-12-17 16:26:44,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:26:44,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388746756] [2021-12-17 16:26:44,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:26:44,974 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:26:44,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:26:45,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:26:45,036 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:26:45,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388746756] [2021-12-17 16:26:45,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388746756] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:26:45,036 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:26:45,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 16:26:45,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857804891] [2021-12-17 16:26:45,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:26:45,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 16:26:45,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:26:45,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 16:26:45,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-17 16:26:45,038 INFO L87 Difference]: Start difference. First operand 317 states and 427 transitions. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:45,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:26:45,382 INFO L93 Difference]: Finished difference Result 1263 states and 1825 transitions. [2021-12-17 16:26:45,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 16:26:45,383 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-12-17 16:26:45,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:26:45,385 INFO L225 Difference]: With dead ends: 1263 [2021-12-17 16:26:45,385 INFO L226 Difference]: Without dead ends: 1053 [2021-12-17 16:26:45,386 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 [2021-12-17 16:26:45,386 INFO L933 BasicCegarLoop]: 227 mSDtfsCounter, 656 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 656 SdHoareTripleChecker+Valid, 670 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 [2021-12-17 16:26:45,386 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [656 Valid, 670 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:26:45,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1053 states. [2021-12-17 16:26:45,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1053 to 525. [2021-12-17 16:26:45,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 524 states have (on average 1.4026717557251909) internal successors, (735), 524 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:45,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 735 transitions. [2021-12-17 16:26:45,502 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 735 transitions. Word has length 98 [2021-12-17 16:26:45,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:26:45,503 INFO L470 AbstractCegarLoop]: Abstraction has 525 states and 735 transitions. [2021-12-17 16:26:45,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:45,503 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 735 transitions. [2021-12-17 16:26:45,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-17 16:26:45,504 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:26:45,504 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:26:45,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-17 16:26:45,504 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:26:45,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:26:45,505 INFO L85 PathProgramCache]: Analyzing trace with hash 645902315, now seen corresponding path program 1 times [2021-12-17 16:26:45,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:26:45,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973468458] [2021-12-17 16:26:45,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:26:45,505 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:26:45,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:26:45,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:26:45,615 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:26:45,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973468458] [2021-12-17 16:26:45,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973468458] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:26:45,615 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:26:45,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 16:26:45,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748724317] [2021-12-17 16:26:45,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:26:45,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 16:26:45,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:26:45,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 16:26:45,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-17 16:26:45,617 INFO L87 Difference]: Start difference. First operand 525 states and 735 transitions. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:45,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:26:45,852 INFO L93 Difference]: Finished difference Result 945 states and 1355 transitions. [2021-12-17 16:26:45,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 16:26:45,852 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-12-17 16:26:45,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:26:45,854 INFO L225 Difference]: With dead ends: 945 [2021-12-17 16:26:45,854 INFO L226 Difference]: Without dead ends: 527 [2021-12-17 16:26:45,855 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 [2021-12-17 16:26:45,856 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 306 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:26:45,856 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [306 Valid, 459 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:26:45,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2021-12-17 16:26:45,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 525. [2021-12-17 16:26:45,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 524 states have (on average 1.3950381679389312) internal successors, (731), 524 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:45,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 731 transitions. [2021-12-17 16:26:45,984 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 731 transitions. Word has length 98 [2021-12-17 16:26:45,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:26:45,984 INFO L470 AbstractCegarLoop]: Abstraction has 525 states and 731 transitions. [2021-12-17 16:26:45,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:45,984 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 731 transitions. [2021-12-17 16:26:45,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-17 16:26:45,985 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:26:45,985 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:26:45,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-17 16:26:45,986 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:26:45,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:26:45,986 INFO L85 PathProgramCache]: Analyzing trace with hash 579408803, now seen corresponding path program 1 times [2021-12-17 16:26:45,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:26:45,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986140131] [2021-12-17 16:26:45,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:26:45,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:26:46,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:26:46,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:26:46,020 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:26:46,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986140131] [2021-12-17 16:26:46,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986140131] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:26:46,020 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:26:46,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 16:26:46,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143937776] [2021-12-17 16:26:46,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:26:46,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 16:26:46,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:26:46,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 16:26:46,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:26:46,022 INFO L87 Difference]: Start difference. First operand 525 states and 731 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:46,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:26:46,258 INFO L93 Difference]: Finished difference Result 1309 states and 1873 transitions. [2021-12-17 16:26:46,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 16:26:46,259 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-12-17 16:26:46,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:26:46,261 INFO L225 Difference]: With dead ends: 1309 [2021-12-17 16:26:46,261 INFO L226 Difference]: Without dead ends: 891 [2021-12-17 16:26:46,261 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:26:46,262 INFO L933 BasicCegarLoop]: 226 mSDtfsCounter, 67 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:26:46,262 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 374 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:26:46,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2021-12-17 16:26:46,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 889. [2021-12-17 16:26:46,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 889 states, 888 states have (on average 1.3975225225225225) internal successors, (1241), 888 states have internal predecessors, (1241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:46,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 889 states to 889 states and 1241 transitions. [2021-12-17 16:26:46,482 INFO L78 Accepts]: Start accepts. Automaton has 889 states and 1241 transitions. Word has length 98 [2021-12-17 16:26:46,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:26:46,482 INFO L470 AbstractCegarLoop]: Abstraction has 889 states and 1241 transitions. [2021-12-17 16:26:46,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:46,482 INFO L276 IsEmpty]: Start isEmpty. Operand 889 states and 1241 transitions. [2021-12-17 16:26:46,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-17 16:26:46,483 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:26:46,483 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:26:46,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-12-17 16:26:46,484 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:26:46,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:26:46,484 INFO L85 PathProgramCache]: Analyzing trace with hash 628880202, now seen corresponding path program 1 times [2021-12-17 16:26:46,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:26:46,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525078588] [2021-12-17 16:26:46,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:26:46,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:26:46,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:26:46,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:26:46,550 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:26:46,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525078588] [2021-12-17 16:26:46,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525078588] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:26:46,551 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:26:46,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 16:26:46,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575946179] [2021-12-17 16:26:46,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:26:46,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 16:26:46,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:26:46,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 16:26:46,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-17 16:26:46,553 INFO L87 Difference]: Start difference. First operand 889 states and 1241 transitions. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:47,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:26:47,245 INFO L93 Difference]: Finished difference Result 2655 states and 3782 transitions. [2021-12-17 16:26:47,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 16:26:47,246 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-12-17 16:26:47,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:26:47,251 INFO L225 Difference]: With dead ends: 2655 [2021-12-17 16:26:47,251 INFO L226 Difference]: Without dead ends: 2263 [2021-12-17 16:26:47,252 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 [2021-12-17 16:26:47,252 INFO L933 BasicCegarLoop]: 233 mSDtfsCounter, 621 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 621 SdHoareTripleChecker+Valid, 698 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 16:26:47,253 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [621 Valid, 698 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 16:26:47,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2263 states. [2021-12-17 16:26:47,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2263 to 1475. [2021-12-17 16:26:47,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1475 states, 1474 states have (on average 1.4118046132971507) internal successors, (2081), 1474 states have internal predecessors, (2081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:47,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1475 states to 1475 states and 2081 transitions. [2021-12-17 16:26:47,693 INFO L78 Accepts]: Start accepts. Automaton has 1475 states and 2081 transitions. Word has length 98 [2021-12-17 16:26:47,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:26:47,694 INFO L470 AbstractCegarLoop]: Abstraction has 1475 states and 2081 transitions. [2021-12-17 16:26:47,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:47,694 INFO L276 IsEmpty]: Start isEmpty. Operand 1475 states and 2081 transitions. [2021-12-17 16:26:47,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-17 16:26:47,695 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:26:47,695 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:26:47,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-12-17 16:26:47,695 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)] === [2021-12-17 16:26:47,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:26:47,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1790937782, now seen corresponding path program 1 times [2021-12-17 16:26:47,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:26:47,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745150615] [2021-12-17 16:26:47,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:26:47,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:26:47,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:26:47,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:26:47,760 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:26:47,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745150615] [2021-12-17 16:26:47,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745150615] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:26:47,760 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:26:47,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 16:26:47,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26821759] [2021-12-17 16:26:47,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:26:47,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 16:26:47,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:26:47,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 16:26:47,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-17 16:26:47,762 INFO L87 Difference]: Start difference. First operand 1475 states and 2081 transitions. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:48,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:26:48,585 INFO L93 Difference]: Finished difference Result 3045 states and 4342 transitions. [2021-12-17 16:26:48,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 16:26:48,586 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-12-17 16:26:48,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:26:48,592 INFO L225 Difference]: With dead ends: 3045 [2021-12-17 16:26:48,592 INFO L226 Difference]: Without dead ends: 2653 [2021-12-17 16:26:48,593 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:26:48,593 INFO L933 BasicCegarLoop]: 234 mSDtfsCounter, 590 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 590 SdHoareTripleChecker+Valid, 759 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 [2021-12-17 16:26:48,593 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [590 Valid, 759 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 16:26:48,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2653 states. [2021-12-17 16:26:49,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2653 to 1865. [2021-12-17 16:26:49,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1865 states, 1864 states have (on average 1.4168454935622317) internal successors, (2641), 1864 states have internal predecessors, (2641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:49,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1865 states to 1865 states and 2641 transitions. [2021-12-17 16:26:49,091 INFO L78 Accepts]: Start accepts. Automaton has 1865 states and 2641 transitions. Word has length 98 [2021-12-17 16:26:49,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:26:49,091 INFO L470 AbstractCegarLoop]: Abstraction has 1865 states and 2641 transitions. [2021-12-17 16:26:49,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:49,091 INFO L276 IsEmpty]: Start isEmpty. Operand 1865 states and 2641 transitions. [2021-12-17 16:26:49,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-17 16:26:49,092 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:26:49,093 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:26:49,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-12-17 16:26:49,093 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)] === [2021-12-17 16:26:49,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:26:49,094 INFO L85 PathProgramCache]: Analyzing trace with hash -686393014, now seen corresponding path program 1 times [2021-12-17 16:26:49,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:26:49,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114769959] [2021-12-17 16:26:49,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:26:49,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:26:49,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:26:49,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:26:49,155 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:26:49,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114769959] [2021-12-17 16:26:49,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114769959] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:26:49,155 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:26:49,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 16:26:49,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232936253] [2021-12-17 16:26:49,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:26:49,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 16:26:49,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:26:49,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 16:26:49,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-17 16:26:49,157 INFO L87 Difference]: Start difference. First operand 1865 states and 2641 transitions. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:50,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:26:50,085 INFO L93 Difference]: Finished difference Result 3435 states and 4902 transitions. [2021-12-17 16:26:50,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 16:26:50,086 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-12-17 16:26:50,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:26:50,094 INFO L225 Difference]: With dead ends: 3435 [2021-12-17 16:26:50,094 INFO L226 Difference]: Without dead ends: 3043 [2021-12-17 16:26:50,095 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 [2021-12-17 16:26:50,095 INFO L933 BasicCegarLoop]: 230 mSDtfsCounter, 649 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 649 SdHoareTripleChecker+Valid, 773 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 16:26:50,095 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [649 Valid, 773 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 16:26:50,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3043 states. [2021-12-17 16:26:50,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3043 to 2255. [2021-12-17 16:26:50,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2255 states, 2254 states have (on average 1.4201419698314108) internal successors, (3201), 2254 states have internal predecessors, (3201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:50,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2255 states to 2255 states and 3201 transitions. [2021-12-17 16:26:50,689 INFO L78 Accepts]: Start accepts. Automaton has 2255 states and 3201 transitions. Word has length 98 [2021-12-17 16:26:50,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:26:50,690 INFO L470 AbstractCegarLoop]: Abstraction has 2255 states and 3201 transitions. [2021-12-17 16:26:50,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:50,690 INFO L276 IsEmpty]: Start isEmpty. Operand 2255 states and 3201 transitions. [2021-12-17 16:26:50,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-12-17 16:26:50,691 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:26:50,692 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:26:50,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-12-17 16:26:50,692 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)] === [2021-12-17 16:26:50,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:26:50,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1897778033, now seen corresponding path program 1 times [2021-12-17 16:26:50,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:26:50,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925536677] [2021-12-17 16:26:50,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:26:50,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:26:50,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:26:50,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:26:50,743 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:26:50,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925536677] [2021-12-17 16:26:50,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925536677] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:26:50,743 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:26:50,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 16:26:50,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508466265] [2021-12-17 16:26:50,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:26:50,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 16:26:50,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:26:50,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 16:26:50,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:26:50,746 INFO L87 Difference]: Start difference. First operand 2255 states and 3201 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:51,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:26:51,775 INFO L93 Difference]: Finished difference Result 5715 states and 8137 transitions. [2021-12-17 16:26:51,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 16:26:51,775 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2021-12-17 16:26:51,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:26:51,783 INFO L225 Difference]: With dead ends: 5715 [2021-12-17 16:26:51,783 INFO L226 Difference]: Without dead ends: 3567 [2021-12-17 16:26:51,785 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:26:51,786 INFO L933 BasicCegarLoop]: 225 mSDtfsCounter, 78 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:26:51,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 345 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:26:51,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3567 states. [2021-12-17 16:26:52,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3567 to 3389. [2021-12-17 16:26:52,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3389 states, 3388 states have (on average 1.406434474616293) internal successors, (4765), 3388 states have internal predecessors, (4765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:52,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3389 states to 3389 states and 4765 transitions. [2021-12-17 16:26:52,702 INFO L78 Accepts]: Start accepts. Automaton has 3389 states and 4765 transitions. Word has length 99 [2021-12-17 16:26:52,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:26:52,703 INFO L470 AbstractCegarLoop]: Abstraction has 3389 states and 4765 transitions. [2021-12-17 16:26:52,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:52,703 INFO L276 IsEmpty]: Start isEmpty. Operand 3389 states and 4765 transitions. [2021-12-17 16:26:52,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-12-17 16:26:52,704 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:26:52,704 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:26:52,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-12-17 16:26:52,704 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)] === [2021-12-17 16:26:52,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:26:52,705 INFO L85 PathProgramCache]: Analyzing trace with hash 642959826, now seen corresponding path program 1 times [2021-12-17 16:26:52,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:26:52,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845117759] [2021-12-17 16:26:52,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:26:52,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:26:52,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:26:52,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:26:52,745 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:26:52,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845117759] [2021-12-17 16:26:52,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845117759] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:26:52,746 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:26:52,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 16:26:52,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277079444] [2021-12-17 16:26:52,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:26:52,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 16:26:52,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:26:52,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 16:26:52,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:26:52,747 INFO L87 Difference]: Start difference. First operand 3389 states and 4765 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:54,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:26:54,628 INFO L93 Difference]: Finished difference Result 9689 states and 13601 transitions. [2021-12-17 16:26:54,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 16:26:54,628 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-12-17 16:26:54,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:26:54,638 INFO L225 Difference]: With dead ends: 9689 [2021-12-17 16:26:54,639 INFO L226 Difference]: Without dead ends: 6407 [2021-12-17 16:26:54,642 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:26:54,644 INFO L933 BasicCegarLoop]: 218 mSDtfsCounter, 71 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:26:54,644 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 346 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:26:54,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6407 states. [2021-12-17 16:26:56,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6407 to 6141. [2021-12-17 16:26:56,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6141 states, 6140 states have (on average 1.3933224755700326) internal successors, (8555), 6140 states have internal predecessors, (8555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:56,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6141 states to 6141 states and 8555 transitions. [2021-12-17 16:26:56,287 INFO L78 Accepts]: Start accepts. Automaton has 6141 states and 8555 transitions. Word has length 100 [2021-12-17 16:26:56,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:26:56,287 INFO L470 AbstractCegarLoop]: Abstraction has 6141 states and 8555 transitions. [2021-12-17 16:26:56,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:56,287 INFO L276 IsEmpty]: Start isEmpty. Operand 6141 states and 8555 transitions. [2021-12-17 16:26:56,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-17 16:26:56,288 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:26:56,288 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:26:56,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-12-17 16:26:56,289 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)] === [2021-12-17 16:26:56,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:26:56,289 INFO L85 PathProgramCache]: Analyzing trace with hash -563977445, now seen corresponding path program 1 times [2021-12-17 16:26:56,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:26:56,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318506123] [2021-12-17 16:26:56,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:26:56,290 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:26:56,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:26:56,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:26:56,331 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:26:56,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318506123] [2021-12-17 16:26:56,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318506123] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:26:56,331 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:26:56,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 16:26:56,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817890963] [2021-12-17 16:26:56,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:26:56,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 16:26:56,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:26:56,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 16:26:56,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:26:56,333 INFO L87 Difference]: Start difference. First operand 6141 states and 8555 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:59,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:26:59,566 INFO L93 Difference]: Finished difference Result 17681 states and 24509 transitions. [2021-12-17 16:26:59,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 16:26:59,567 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2021-12-17 16:26:59,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:26:59,586 INFO L225 Difference]: With dead ends: 17681 [2021-12-17 16:26:59,586 INFO L226 Difference]: Without dead ends: 11647 [2021-12-17 16:26:59,594 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:26:59,595 INFO L933 BasicCegarLoop]: 210 mSDtfsCounter, 64 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:26:59,595 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 346 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:26:59,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11647 states. [2021-12-17 16:27:02,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11647 to 11117. [2021-12-17 16:27:02,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11117 states, 11116 states have (on average 1.3743252968693775) internal successors, (15277), 11116 states have internal predecessors, (15277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:27:02,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11117 states to 11117 states and 15277 transitions. [2021-12-17 16:27:02,791 INFO L78 Accepts]: Start accepts. Automaton has 11117 states and 15277 transitions. Word has length 101 [2021-12-17 16:27:02,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:27:02,792 INFO L470 AbstractCegarLoop]: Abstraction has 11117 states and 15277 transitions. [2021-12-17 16:27:02,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:27:02,792 INFO L276 IsEmpty]: Start isEmpty. Operand 11117 states and 15277 transitions. [2021-12-17 16:27:02,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-12-17 16:27:02,793 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:27:02,793 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:27:02,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-12-17 16:27:02,793 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)] === [2021-12-17 16:27:02,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:27:02,794 INFO L85 PathProgramCache]: Analyzing trace with hash 573353758, now seen corresponding path program 1 times [2021-12-17 16:27:02,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:27:02,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120224831] [2021-12-17 16:27:02,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:27:02,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:27:02,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:27:02,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:27:02,834 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:27:02,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120224831] [2021-12-17 16:27:02,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120224831] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:27:02,835 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:27:02,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 16:27:02,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628619012] [2021-12-17 16:27:02,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:27:02,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 16:27:02,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:27:02,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 16:27:02,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:27:02,836 INFO L87 Difference]: Start difference. First operand 11117 states and 15277 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:27:08,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:27:08,798 INFO L93 Difference]: Finished difference Result 32081 states and 43751 transitions. [2021-12-17 16:27:08,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 16:27:08,798 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2021-12-17 16:27:08,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:27:08,849 INFO L225 Difference]: With dead ends: 32081 [2021-12-17 16:27:08,850 INFO L226 Difference]: Without dead ends: 21071 [2021-12-17 16:27:08,865 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:27:08,866 INFO L933 BasicCegarLoop]: 201 mSDtfsCounter, 54 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:27:08,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 345 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:27:08,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21071 states. [2021-12-17 16:27:14,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21071 to 20013. [2021-12-17 16:27:14,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20013 states, 20012 states have (on average 1.349440335798521) internal successors, (27005), 20012 states have internal predecessors, (27005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:27:14,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20013 states to 20013 states and 27005 transitions. [2021-12-17 16:27:14,763 INFO L78 Accepts]: Start accepts. Automaton has 20013 states and 27005 transitions. Word has length 102 [2021-12-17 16:27:14,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:27:14,763 INFO L470 AbstractCegarLoop]: Abstraction has 20013 states and 27005 transitions. [2021-12-17 16:27:14,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:27:14,764 INFO L276 IsEmpty]: Start isEmpty. Operand 20013 states and 27005 transitions. [2021-12-17 16:27:14,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-17 16:27:14,764 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:27:14,765 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:27:14,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-12-17 16:27:14,766 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)] === [2021-12-17 16:27:14,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:27:14,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1488377255, now seen corresponding path program 1 times [2021-12-17 16:27:14,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:27:14,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800027029] [2021-12-17 16:27:14,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:27:14,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:27:14,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:27:14,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:27:14,834 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:27:14,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800027029] [2021-12-17 16:27:14,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800027029] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:27:14,835 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:27:14,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 16:27:14,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273818468] [2021-12-17 16:27:14,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:27:14,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 16:27:14,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:27:14,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 16:27:14,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 16:27:14,838 INFO L87 Difference]: Start difference. First operand 20013 states and 27005 transitions. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:27:24,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:27:24,195 INFO L93 Difference]: Finished difference Result 31023 states and 41659 transitions. [2021-12-17 16:27:24,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 16:27:24,196 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-12-17 16:27:24,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:27:24,244 INFO L225 Difference]: With dead ends: 31023 [2021-12-17 16:27:24,245 INFO L226 Difference]: Without dead ends: 31021 [2021-12-17 16:27:24,253 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:27:24,254 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 260 mSDsluCounter, 624 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 822 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:27:24,254 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [260 Valid, 822 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:27:24,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31021 states. [2021-12-17 16:27:30,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31021 to 20493. [2021-12-17 16:27:30,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20493 states, 20492 states have (on average 1.3318856138981066) internal successors, (27293), 20492 states have internal predecessors, (27293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:27:30,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20493 states to 20493 states and 27293 transitions. [2021-12-17 16:27:30,516 INFO L78 Accepts]: Start accepts. Automaton has 20493 states and 27293 transitions. Word has length 103 [2021-12-17 16:27:30,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:27:30,516 INFO L470 AbstractCegarLoop]: Abstraction has 20493 states and 27293 transitions. [2021-12-17 16:27:30,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:27:30,517 INFO L276 IsEmpty]: Start isEmpty. Operand 20493 states and 27293 transitions. [2021-12-17 16:27:30,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-17 16:27:30,517 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:27:30,517 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:27:30,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-12-17 16:27:30,518 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)] === [2021-12-17 16:27:30,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:27:30,518 INFO L85 PathProgramCache]: Analyzing trace with hash -108390554, now seen corresponding path program 1 times [2021-12-17 16:27:30,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:27:30,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932785806] [2021-12-17 16:27:30,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:27:30,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:27:30,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:27:30,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:27:30,559 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:27:30,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932785806] [2021-12-17 16:27:30,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932785806] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:27:30,560 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:27:30,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 16:27:30,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111669798] [2021-12-17 16:27:30,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:27:30,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 16:27:30,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:27:30,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 16:27:30,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:27:30,561 INFO L87 Difference]: Start difference. First operand 20493 states and 27293 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:27:36,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:27:36,789 INFO L93 Difference]: Finished difference Result 41521 states and 55335 transitions. [2021-12-17 16:27:36,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 16:27:36,789 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-12-17 16:27:36,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:27:36,815 INFO L225 Difference]: With dead ends: 41521 [2021-12-17 16:27:36,815 INFO L226 Difference]: Without dead ends: 21135 [2021-12-17 16:27:36,832 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:27:36,833 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 86 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:27:36,833 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 289 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:27:36,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21135 states. [2021-12-17 16:27:43,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21135 to 21133. [2021-12-17 16:27:43,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21133 states, 21132 states have (on average 1.3150198750709825) internal successors, (27789), 21132 states have internal predecessors, (27789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:27:43,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21133 states to 21133 states and 27789 transitions. [2021-12-17 16:27:43,212 INFO L78 Accepts]: Start accepts. Automaton has 21133 states and 27789 transitions. Word has length 103 [2021-12-17 16:27:43,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:27:43,212 INFO L470 AbstractCegarLoop]: Abstraction has 21133 states and 27789 transitions. [2021-12-17 16:27:43,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:27:43,212 INFO L276 IsEmpty]: Start isEmpty. Operand 21133 states and 27789 transitions. [2021-12-17 16:27:43,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-17 16:27:43,216 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:27:43,216 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:27:43,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-12-17 16:27:43,216 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)] === [2021-12-17 16:27:43,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:27:43,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1221771837, now seen corresponding path program 1 times [2021-12-17 16:27:43,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:27:43,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402874972] [2021-12-17 16:27:43,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:27:43,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:27:43,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:27:43,439 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:27:43,439 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:27:43,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402874972] [2021-12-17 16:27:43,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402874972] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 16:27:43,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265305212] [2021-12-17 16:27:43,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:27:43,440 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 16:27:43,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 16:27:43,441 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 16:27:43,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-17 16:27:43,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:27:43,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 723 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-17 16:27:43,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 16:27:44,717 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 14 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:27:44,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 16:27:46,320 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 14 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:27:46,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265305212] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 16:27:46,321 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-17 16:27:46,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 29 [2021-12-17 16:27:46,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694657833] [2021-12-17 16:27:46,322 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-17 16:27:46,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-12-17 16:27:46,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:27:46,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-12-17 16:27:46,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=775, Unknown=0, NotChecked=0, Total=870 [2021-12-17 16:27:46,325 INFO L87 Difference]: Start difference. First operand 21133 states and 27789 transitions. Second operand has 30 states, 30 states have (on average 11.866666666666667) internal successors, (356), 29 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)