/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 04:29:27,293 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 04:29:27,296 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 04:29:27,330 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 04:29:27,331 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 04:29:27,332 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 04:29:27,334 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 04:29:27,336 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 04:29:27,339 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 04:29:27,340 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 04:29:27,341 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 04:29:27,343 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 04:29:27,343 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 04:29:27,345 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 04:29:27,346 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 04:29:27,347 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 04:29:27,348 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 04:29:27,349 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 04:29:27,352 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 04:29:27,354 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 04:29:27,356 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 04:29:27,357 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 04:29:27,359 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 04:29:27,370 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 04:29:27,376 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 04:29:27,377 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 04:29:27,380 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 04:29:27,381 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 04:29:27,382 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 04:29:27,386 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 04:29:27,386 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 04:29:27,387 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 04:29:27,388 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 04:29:27,389 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 04:29:27,394 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 04:29:27,394 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 04:29:27,395 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 04:29:27,395 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 04:29:27,395 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 04:29:27,396 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 04:29:27,397 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 04:29:27,400 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 04:29:27,454 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 04:29:27,454 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 04:29:27,458 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 04:29:27,458 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 04:29:27,458 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 04:29:27,458 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 04:29:27,459 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 04:29:27,460 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 04:29:27,460 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 04:29:27,460 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 04:29:27,461 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 04:29:27,462 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 04:29:27,462 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 04:29:27,462 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 04:29:27,462 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 04:29:27,463 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 04:29:27,463 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 04:29:27,463 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 04:29:27,463 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 04:29:27,463 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 04:29:27,464 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 04:29:27,464 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 04:29:27,464 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 04:29:27,464 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 04:29:27,464 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 04:29:27,465 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 04:29:27,827 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 04:29:27,858 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 04:29:27,861 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 04:29:27,862 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 04:29:27,863 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 04:29:27,864 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c [2020-12-22 04:29:27,952 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ba25fdec/88098ce2a4e8416192d978411d79d4bc/FLAG953671247 [2020-12-22 04:29:28,522 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 04:29:28,523 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c [2020-12-22 04:29:28,538 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ba25fdec/88098ce2a4e8416192d978411d79d4bc/FLAG953671247 [2020-12-22 04:29:28,872 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ba25fdec/88098ce2a4e8416192d978411d79d4bc [2020-12-22 04:29:28,883 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 04:29:28,889 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 04:29:28,892 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 04:29:28,893 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 04:29:28,897 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 04:29:28,898 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 04:29:28" (1/1) ... [2020-12-22 04:29:28,901 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57380beb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:29:28, skipping insertion in model container [2020-12-22 04:29:28,901 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 04:29:28" (1/1) ... [2020-12-22 04:29:28,914 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 04:29:28,975 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 04:29:29,206 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[1123,1136] [2020-12-22 04:29:29,210 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[1338,1351] [2020-12-22 04:29:29,213 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[1654,1667] [2020-12-22 04:29:29,215 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[1869,1882] [2020-12-22 04:29:29,219 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[2402,2415] [2020-12-22 04:29:29,220 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[2617,2630] [2020-12-22 04:29:29,223 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[2919,2932] [2020-12-22 04:29:29,225 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[3134,3147] [2020-12-22 04:29:29,228 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[3404,3417] [2020-12-22 04:29:29,230 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[3622,3635] [2020-12-22 04:29:29,233 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[4106,4119] [2020-12-22 04:29:29,235 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[4324,4337] [2020-12-22 04:29:29,238 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[4820,4833] [2020-12-22 04:29:29,241 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[5221,5234] [2020-12-22 04:29:29,242 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[5439,5452] [2020-12-22 04:29:29,245 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[5881,5894] [2020-12-22 04:29:29,247 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[6099,6112] [2020-12-22 04:29:29,250 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 04:29:29,260 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 04:29:29,278 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[1123,1136] [2020-12-22 04:29:29,280 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[1338,1351] [2020-12-22 04:29:29,282 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[1654,1667] [2020-12-22 04:29:29,284 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[1869,1882] [2020-12-22 04:29:29,286 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[2402,2415] [2020-12-22 04:29:29,288 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[2617,2630] [2020-12-22 04:29:29,290 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[2919,2932] [2020-12-22 04:29:29,292 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[3134,3147] [2020-12-22 04:29:29,297 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[3404,3417] [2020-12-22 04:29:29,299 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[3622,3635] [2020-12-22 04:29:29,302 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[4106,4119] [2020-12-22 04:29:29,303 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[4324,4337] [2020-12-22 04:29:29,306 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[4820,4833] [2020-12-22 04:29:29,308 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[5221,5234] [2020-12-22 04:29:29,309 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[5439,5452] [2020-12-22 04:29:29,311 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[5881,5894] [2020-12-22 04:29:29,313 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[6099,6112] [2020-12-22 04:29:29,315 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 04:29:29,330 INFO L208 MainTranslator]: Completed translation [2020-12-22 04:29:29,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:29:29 WrapperNode [2020-12-22 04:29:29,331 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 04:29:29,332 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 04:29:29,332 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 04:29:29,333 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 04:29:29,340 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:29:29" (1/1) ... [2020-12-22 04:29:29,348 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:29:29" (1/1) ... [2020-12-22 04:29:29,377 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 04:29:29,378 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 04:29:29,378 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 04:29:29,379 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 04:29:29,388 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:29:29" (1/1) ... [2020-12-22 04:29:29,388 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:29:29" (1/1) ... [2020-12-22 04:29:29,391 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:29:29" (1/1) ... [2020-12-22 04:29:29,391 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:29:29" (1/1) ... [2020-12-22 04:29:29,397 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:29:29" (1/1) ... [2020-12-22 04:29:29,401 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:29:29" (1/1) ... [2020-12-22 04:29:29,403 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:29:29" (1/1) ... [2020-12-22 04:29:29,406 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 04:29:29,408 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 04:29:29,408 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 04:29:29,408 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 04:29:29,409 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:29:29" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 04:29:29,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 04:29:29,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 04:29:29,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 04:29:29,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 04:29:30,118 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 04:29:30,119 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 04:29:30,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:29:30 BoogieIcfgContainer [2020-12-22 04:29:30,121 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 04:29:30,123 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 04:29:30,123 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 04:29:30,126 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 04:29:30,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 04:29:28" (1/3) ... [2020-12-22 04:29:30,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52613ddf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 04:29:30, skipping insertion in model container [2020-12-22 04:29:30,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:29:29" (2/3) ... [2020-12-22 04:29:30,128 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52613ddf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 04:29:30, skipping insertion in model container [2020-12-22 04:29:30,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:29:30" (3/3) ... [2020-12-22 04:29:30,129 INFO L111 eAbstractionObserver]: Analyzing ICFG apache-get-tag.i.v+nlh-reducer.c [2020-12-22 04:29:30,136 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 04:29:30,141 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 17 error locations. [2020-12-22 04:29:30,161 INFO L253 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2020-12-22 04:29:30,187 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 04:29:30,188 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 04:29:30,188 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 04:29:30,188 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 04:29:30,188 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 04:29:30,188 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 04:29:30,188 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 04:29:30,189 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 04:29:30,208 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states. [2020-12-22 04:29:30,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-22 04:29:30,214 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:29:30,214 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:29:30,215 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:29:30,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:29:30,222 INFO L82 PathProgramCache]: Analyzing trace with hash 123971630, now seen corresponding path program 1 times [2020-12-22 04:29:30,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:29:30,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682739831] [2020-12-22 04:29:30,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:29:30,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:29:30,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:29:30,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682739831] [2020-12-22 04:29:30,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:29:30,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 04:29:30,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794441576] [2020-12-22 04:29:30,534 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 04:29:30,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:29:30,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 04:29:30,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 04:29:30,552 INFO L87 Difference]: Start difference. First operand 71 states. Second operand 4 states. [2020-12-22 04:29:30,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:29:30,706 INFO L93 Difference]: Finished difference Result 125 states and 166 transitions. [2020-12-22 04:29:30,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 04:29:30,708 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-12-22 04:29:30,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:29:30,719 INFO L225 Difference]: With dead ends: 125 [2020-12-22 04:29:30,719 INFO L226 Difference]: Without dead ends: 109 [2020-12-22 04:29:30,723 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 04:29:30,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-12-22 04:29:30,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 65. [2020-12-22 04:29:30,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-12-22 04:29:30,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2020-12-22 04:29:30,767 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 8 [2020-12-22 04:29:30,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:29:30,768 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2020-12-22 04:29:30,768 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 04:29:30,768 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2020-12-22 04:29:30,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-22 04:29:30,769 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:29:30,769 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:29:30,770 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 04:29:30,770 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:29:30,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:29:30,772 INFO L82 PathProgramCache]: Analyzing trace with hash 120336139, now seen corresponding path program 1 times [2020-12-22 04:29:30,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:29:30,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568456817] [2020-12-22 04:29:30,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:29:30,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:29:30,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:29:30,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568456817] [2020-12-22 04:29:30,868 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:29:30,868 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 04:29:30,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575924964] [2020-12-22 04:29:30,872 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 04:29:30,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:29:30,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 04:29:30,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 04:29:30,874 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 4 states. [2020-12-22 04:29:31,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:29:31,017 INFO L93 Difference]: Finished difference Result 65 states and 69 transitions. [2020-12-22 04:29:31,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 04:29:31,019 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-12-22 04:29:31,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:29:31,020 INFO L225 Difference]: With dead ends: 65 [2020-12-22 04:29:31,021 INFO L226 Difference]: Without dead ends: 63 [2020-12-22 04:29:31,022 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 04:29:31,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-12-22 04:29:31,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-12-22 04:29:31,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-12-22 04:29:31,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2020-12-22 04:29:31,043 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 8 [2020-12-22 04:29:31,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:29:31,045 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2020-12-22 04:29:31,045 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 04:29:31,046 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2020-12-22 04:29:31,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-22 04:29:31,048 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:29:31,048 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:29:31,048 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 04:29:31,049 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:29:31,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:29:31,054 INFO L82 PathProgramCache]: Analyzing trace with hash -564542931, now seen corresponding path program 1 times [2020-12-22 04:29:31,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:29:31,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763843079] [2020-12-22 04:29:31,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:29:31,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:29:31,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:29:31,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763843079] [2020-12-22 04:29:31,172 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:29:31,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 04:29:31,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974555454] [2020-12-22 04:29:31,174 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 04:29:31,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:29:31,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 04:29:31,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 04:29:31,175 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand 4 states. [2020-12-22 04:29:31,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:29:31,299 INFO L93 Difference]: Finished difference Result 69 states and 73 transitions. [2020-12-22 04:29:31,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 04:29:31,302 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-22 04:29:31,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:29:31,303 INFO L225 Difference]: With dead ends: 69 [2020-12-22 04:29:31,304 INFO L226 Difference]: Without dead ends: 67 [2020-12-22 04:29:31,308 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 04:29:31,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-12-22 04:29:31,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 66. [2020-12-22 04:29:31,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-12-22 04:29:31,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2020-12-22 04:29:31,318 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 9 [2020-12-22 04:29:31,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:29:31,319 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2020-12-22 04:29:31,319 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 04:29:31,319 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2020-12-22 04:29:31,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 04:29:31,320 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:29:31,320 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:29:31,320 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 04:29:31,321 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:29:31,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:29:31,322 INFO L82 PathProgramCache]: Analyzing trace with hash -429055130, now seen corresponding path program 1 times [2020-12-22 04:29:31,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:29:31,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254135268] [2020-12-22 04:29:31,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:29:31,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:29:31,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:29:31,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254135268] [2020-12-22 04:29:31,377 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:29:31,377 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 04:29:31,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552859124] [2020-12-22 04:29:31,378 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 04:29:31,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:29:31,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 04:29:31,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 04:29:31,379 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand 5 states. [2020-12-22 04:29:31,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:29:31,493 INFO L93 Difference]: Finished difference Result 67 states and 71 transitions. [2020-12-22 04:29:31,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 04:29:31,493 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-22 04:29:31,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:29:31,494 INFO L225 Difference]: With dead ends: 67 [2020-12-22 04:29:31,495 INFO L226 Difference]: Without dead ends: 65 [2020-12-22 04:29:31,495 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-22 04:29:31,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-12-22 04:29:31,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 64. [2020-12-22 04:29:31,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-12-22 04:29:31,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2020-12-22 04:29:31,503 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 11 [2020-12-22 04:29:31,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:29:31,504 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 68 transitions. [2020-12-22 04:29:31,504 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 04:29:31,504 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 68 transitions. [2020-12-22 04:29:31,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 04:29:31,505 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:29:31,505 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:29:31,505 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 04:29:31,505 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:29:31,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:29:31,506 INFO L82 PathProgramCache]: Analyzing trace with hash -1359750351, now seen corresponding path program 1 times [2020-12-22 04:29:31,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:29:31,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223686145] [2020-12-22 04:29:31,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:29:31,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:29:31,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:29:31,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223686145] [2020-12-22 04:29:31,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:29:31,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 04:29:31,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000919500] [2020-12-22 04:29:31,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 04:29:31,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:29:31,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 04:29:31,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 04:29:31,556 INFO L87 Difference]: Start difference. First operand 64 states and 68 transitions. Second operand 5 states. [2020-12-22 04:29:31,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:29:31,655 INFO L93 Difference]: Finished difference Result 65 states and 69 transitions. [2020-12-22 04:29:31,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 04:29:31,656 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-22 04:29:31,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:29:31,657 INFO L225 Difference]: With dead ends: 65 [2020-12-22 04:29:31,657 INFO L226 Difference]: Without dead ends: 63 [2020-12-22 04:29:31,657 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-22 04:29:31,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-12-22 04:29:31,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2020-12-22 04:29:31,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-12-22 04:29:31,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2020-12-22 04:29:31,664 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 11 [2020-12-22 04:29:31,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:29:31,665 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2020-12-22 04:29:31,665 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 04:29:31,665 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2020-12-22 04:29:31,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-22 04:29:31,666 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:29:31,666 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:29:31,666 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 04:29:31,666 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:29:31,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:29:31,667 INFO L82 PathProgramCache]: Analyzing trace with hash -415802953, now seen corresponding path program 1 times [2020-12-22 04:29:31,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:29:31,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753779772] [2020-12-22 04:29:31,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:29:31,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:29:31,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:29:31,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753779772] [2020-12-22 04:29:31,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:29:31,726 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 04:29:31,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201162151] [2020-12-22 04:29:31,729 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 04:29:31,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:29:31,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 04:29:31,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 04:29:31,734 INFO L87 Difference]: Start difference. First operand 62 states and 66 transitions. Second operand 4 states. [2020-12-22 04:29:31,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:29:31,797 INFO L93 Difference]: Finished difference Result 63 states and 67 transitions. [2020-12-22 04:29:31,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 04:29:31,797 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-12-22 04:29:31,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:29:31,800 INFO L225 Difference]: With dead ends: 63 [2020-12-22 04:29:31,800 INFO L226 Difference]: Without dead ends: 59 [2020-12-22 04:29:31,802 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 04:29:31,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-12-22 04:29:31,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2020-12-22 04:29:31,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-12-22 04:29:31,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 62 transitions. [2020-12-22 04:29:31,820 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 62 transitions. Word has length 12 [2020-12-22 04:29:31,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:29:31,820 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 62 transitions. [2020-12-22 04:29:31,820 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 04:29:31,821 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 62 transitions. [2020-12-22 04:29:31,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-22 04:29:31,822 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:29:31,822 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:29:31,822 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 04:29:31,822 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:29:31,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:29:31,824 INFO L82 PathProgramCache]: Analyzing trace with hash -415312395, now seen corresponding path program 1 times [2020-12-22 04:29:31,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:29:31,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385384303] [2020-12-22 04:29:31,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:29:31,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:29:31,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:29:31,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385384303] [2020-12-22 04:29:31,907 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:29:31,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 04:29:31,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311290998] [2020-12-22 04:29:31,907 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 04:29:31,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:29:31,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 04:29:31,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 04:29:31,909 INFO L87 Difference]: Start difference. First operand 58 states and 62 transitions. Second operand 5 states. [2020-12-22 04:29:32,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:29:32,014 INFO L93 Difference]: Finished difference Result 100 states and 107 transitions. [2020-12-22 04:29:32,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 04:29:32,014 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-22 04:29:32,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:29:32,015 INFO L225 Difference]: With dead ends: 100 [2020-12-22 04:29:32,016 INFO L226 Difference]: Without dead ends: 98 [2020-12-22 04:29:32,016 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-22 04:29:32,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-12-22 04:29:32,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 56. [2020-12-22 04:29:32,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-12-22 04:29:32,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2020-12-22 04:29:32,022 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 12 [2020-12-22 04:29:32,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:29:32,022 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2020-12-22 04:29:32,022 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 04:29:32,023 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2020-12-22 04:29:32,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-22 04:29:32,023 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:29:32,023 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:29:32,024 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 04:29:32,024 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:29:32,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:29:32,025 INFO L82 PathProgramCache]: Analyzing trace with hash 797416153, now seen corresponding path program 1 times [2020-12-22 04:29:32,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:29:32,025 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951336961] [2020-12-22 04:29:32,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:29:32,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:29:32,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:29:32,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951336961] [2020-12-22 04:29:32,059 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:29:32,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 04:29:32,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995084703] [2020-12-22 04:29:32,060 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 04:29:32,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:29:32,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 04:29:32,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 04:29:32,061 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand 4 states. [2020-12-22 04:29:32,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:29:32,114 INFO L93 Difference]: Finished difference Result 57 states and 61 transitions. [2020-12-22 04:29:32,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 04:29:32,114 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-12-22 04:29:32,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:29:32,115 INFO L225 Difference]: With dead ends: 57 [2020-12-22 04:29:32,115 INFO L226 Difference]: Without dead ends: 53 [2020-12-22 04:29:32,116 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 04:29:32,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-12-22 04:29:32,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2020-12-22 04:29:32,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-12-22 04:29:32,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2020-12-22 04:29:32,120 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 12 [2020-12-22 04:29:32,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:29:32,121 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2020-12-22 04:29:32,121 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 04:29:32,121 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2020-12-22 04:29:32,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 04:29:32,122 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:29:32,122 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:29:32,122 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 04:29:32,122 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:29:32,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:29:32,123 INFO L82 PathProgramCache]: Analyzing trace with hash 10221853, now seen corresponding path program 1 times [2020-12-22 04:29:32,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:29:32,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253669618] [2020-12-22 04:29:32,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:29:32,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:29:32,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:29:32,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253669618] [2020-12-22 04:29:32,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:29:32,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 04:29:32,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656070741] [2020-12-22 04:29:32,268 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 04:29:32,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:29:32,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 04:29:32,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-22 04:29:32,269 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand 6 states. [2020-12-22 04:29:32,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:29:32,405 INFO L93 Difference]: Finished difference Result 118 states and 127 transitions. [2020-12-22 04:29:32,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 04:29:32,405 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-12-22 04:29:32,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:29:32,406 INFO L225 Difference]: With dead ends: 118 [2020-12-22 04:29:32,407 INFO L226 Difference]: Without dead ends: 116 [2020-12-22 04:29:32,407 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-22 04:29:32,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-12-22 04:29:32,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 57. [2020-12-22 04:29:32,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-12-22 04:29:32,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 62 transitions. [2020-12-22 04:29:32,413 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 62 transitions. Word has length 13 [2020-12-22 04:29:32,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:29:32,414 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 62 transitions. [2020-12-22 04:29:32,414 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 04:29:32,414 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 62 transitions. [2020-12-22 04:29:32,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 04:29:32,415 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:29:32,415 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:29:32,415 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 04:29:32,415 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:29:32,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:29:32,416 INFO L82 PathProgramCache]: Analyzing trace with hash -1032848570, now seen corresponding path program 1 times [2020-12-22 04:29:32,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:29:32,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793597572] [2020-12-22 04:29:32,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:29:32,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:29:32,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:29:32,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793597572] [2020-12-22 04:29:32,449 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:29:32,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 04:29:32,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588285991] [2020-12-22 04:29:32,450 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 04:29:32,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:29:32,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 04:29:32,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 04:29:32,451 INFO L87 Difference]: Start difference. First operand 57 states and 62 transitions. Second operand 5 states. [2020-12-22 04:29:32,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:29:32,527 INFO L93 Difference]: Finished difference Result 74 states and 81 transitions. [2020-12-22 04:29:32,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 04:29:32,528 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-22 04:29:32,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:29:32,529 INFO L225 Difference]: With dead ends: 74 [2020-12-22 04:29:32,529 INFO L226 Difference]: Without dead ends: 72 [2020-12-22 04:29:32,529 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-22 04:29:32,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-12-22 04:29:32,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 55. [2020-12-22 04:29:32,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-12-22 04:29:32,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 60 transitions. [2020-12-22 04:29:32,534 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 60 transitions. Word has length 13 [2020-12-22 04:29:32,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:29:32,535 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 60 transitions. [2020-12-22 04:29:32,535 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 04:29:32,535 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 60 transitions. [2020-12-22 04:29:32,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 04:29:32,535 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:29:32,536 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:29:32,536 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 04:29:32,536 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:29:32,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:29:32,537 INFO L82 PathProgramCache]: Analyzing trace with hash -1031124666, now seen corresponding path program 1 times [2020-12-22 04:29:32,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:29:32,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256955919] [2020-12-22 04:29:32,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:29:32,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:29:32,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:29:32,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256955919] [2020-12-22 04:29:32,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:29:32,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 04:29:32,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776000346] [2020-12-22 04:29:32,569 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 04:29:32,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:29:32,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 04:29:32,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 04:29:32,570 INFO L87 Difference]: Start difference. First operand 55 states and 60 transitions. Second operand 5 states. [2020-12-22 04:29:32,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:29:32,645 INFO L93 Difference]: Finished difference Result 55 states and 60 transitions. [2020-12-22 04:29:32,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 04:29:32,646 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-22 04:29:32,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:29:32,646 INFO L225 Difference]: With dead ends: 55 [2020-12-22 04:29:32,647 INFO L226 Difference]: Without dead ends: 53 [2020-12-22 04:29:32,647 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-22 04:29:32,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-12-22 04:29:32,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-12-22 04:29:32,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-12-22 04:29:32,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 58 transitions. [2020-12-22 04:29:32,651 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 58 transitions. Word has length 13 [2020-12-22 04:29:32,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:29:32,652 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 58 transitions. [2020-12-22 04:29:32,652 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 04:29:32,652 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 58 transitions. [2020-12-22 04:29:32,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-22 04:29:32,653 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:29:32,653 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:29:32,653 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 04:29:32,653 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:29:32,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:29:32,654 INFO L82 PathProgramCache]: Analyzing trace with hash 310078394, now seen corresponding path program 1 times [2020-12-22 04:29:32,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:29:32,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759745430] [2020-12-22 04:29:32,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:29:32,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:29:32,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:29:32,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759745430] [2020-12-22 04:29:32,741 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:29:32,741 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 04:29:32,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929863285] [2020-12-22 04:29:32,742 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 04:29:32,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:29:32,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 04:29:32,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-22 04:29:32,743 INFO L87 Difference]: Start difference. First operand 53 states and 58 transitions. Second operand 6 states. [2020-12-22 04:29:32,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:29:32,829 INFO L93 Difference]: Finished difference Result 78 states and 85 transitions. [2020-12-22 04:29:32,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 04:29:32,829 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-12-22 04:29:32,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:29:32,831 INFO L225 Difference]: With dead ends: 78 [2020-12-22 04:29:32,832 INFO L226 Difference]: Without dead ends: 76 [2020-12-22 04:29:32,832 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 04:29:32,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-12-22 04:29:32,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 53. [2020-12-22 04:29:32,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-12-22 04:29:32,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 58 transitions. [2020-12-22 04:29:32,837 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 58 transitions. Word has length 14 [2020-12-22 04:29:32,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:29:32,837 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 58 transitions. [2020-12-22 04:29:32,838 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 04:29:32,838 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 58 transitions. [2020-12-22 04:29:32,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-22 04:29:32,838 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:29:32,838 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:29:32,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 04:29:32,839 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:29:32,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:29:32,840 INFO L82 PathProgramCache]: Analyzing trace with hash -1953530500, now seen corresponding path program 1 times [2020-12-22 04:29:32,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:29:32,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756532037] [2020-12-22 04:29:32,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:29:32,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:29:32,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:29:32,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756532037] [2020-12-22 04:29:32,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:29:32,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 04:29:32,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666787733] [2020-12-22 04:29:32,941 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 04:29:32,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:29:32,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 04:29:32,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-22 04:29:32,942 INFO L87 Difference]: Start difference. First operand 53 states and 58 transitions. Second operand 6 states. [2020-12-22 04:29:33,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:29:33,050 INFO L93 Difference]: Finished difference Result 92 states and 101 transitions. [2020-12-22 04:29:33,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 04:29:33,050 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-12-22 04:29:33,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:29:33,051 INFO L225 Difference]: With dead ends: 92 [2020-12-22 04:29:33,051 INFO L226 Difference]: Without dead ends: 90 [2020-12-22 04:29:33,052 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-22 04:29:33,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-12-22 04:29:33,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 61. [2020-12-22 04:29:33,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-12-22 04:29:33,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 68 transitions. [2020-12-22 04:29:33,056 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 68 transitions. Word has length 14 [2020-12-22 04:29:33,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:29:33,057 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 68 transitions. [2020-12-22 04:29:33,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 04:29:33,057 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 68 transitions. [2020-12-22 04:29:33,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-22 04:29:33,058 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:29:33,058 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:29:33,058 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 04:29:33,058 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:29:33,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:29:33,059 INFO L82 PathProgramCache]: Analyzing trace with hash -1951983355, now seen corresponding path program 1 times [2020-12-22 04:29:33,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:29:33,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827739987] [2020-12-22 04:29:33,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:29:33,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:29:33,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:29:33,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827739987] [2020-12-22 04:29:33,090 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:29:33,091 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 04:29:33,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530456859] [2020-12-22 04:29:33,091 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 04:29:33,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:29:33,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 04:29:33,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 04:29:33,092 INFO L87 Difference]: Start difference. First operand 61 states and 68 transitions. Second operand 5 states. [2020-12-22 04:29:33,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:29:33,187 INFO L93 Difference]: Finished difference Result 81 states and 90 transitions. [2020-12-22 04:29:33,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 04:29:33,187 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-22 04:29:33,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:29:33,188 INFO L225 Difference]: With dead ends: 81 [2020-12-22 04:29:33,188 INFO L226 Difference]: Without dead ends: 79 [2020-12-22 04:29:33,189 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-22 04:29:33,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-12-22 04:29:33,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 59. [2020-12-22 04:29:33,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-12-22 04:29:33,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2020-12-22 04:29:33,193 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 14 [2020-12-22 04:29:33,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:29:33,194 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2020-12-22 04:29:33,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 04:29:33,194 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2020-12-22 04:29:33,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-22 04:29:33,195 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:29:33,195 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:29:33,195 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 04:29:33,195 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:29:33,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:29:33,196 INFO L82 PathProgramCache]: Analyzing trace with hash -1900089420, now seen corresponding path program 1 times [2020-12-22 04:29:33,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:29:33,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337085114] [2020-12-22 04:29:33,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:29:33,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:29:33,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:29:33,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337085114] [2020-12-22 04:29:33,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:29:33,284 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 04:29:33,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752198137] [2020-12-22 04:29:33,285 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 04:29:33,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:29:33,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 04:29:33,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-22 04:29:33,286 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand 6 states. [2020-12-22 04:29:33,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:29:33,374 INFO L93 Difference]: Finished difference Result 70 states and 77 transitions. [2020-12-22 04:29:33,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 04:29:33,375 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-12-22 04:29:33,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:29:33,376 INFO L225 Difference]: With dead ends: 70 [2020-12-22 04:29:33,376 INFO L226 Difference]: Without dead ends: 66 [2020-12-22 04:29:33,377 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-22 04:29:33,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-12-22 04:29:33,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 60. [2020-12-22 04:29:33,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-12-22 04:29:33,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 67 transitions. [2020-12-22 04:29:33,381 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 67 transitions. Word has length 14 [2020-12-22 04:29:33,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:29:33,382 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 67 transitions. [2020-12-22 04:29:33,382 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 04:29:33,382 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 67 transitions. [2020-12-22 04:29:33,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-22 04:29:33,382 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:29:33,382 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:29:33,383 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 04:29:33,383 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:29:33,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:29:33,384 INFO L82 PathProgramCache]: Analyzing trace with hash -381937728, now seen corresponding path program 1 times [2020-12-22 04:29:33,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:29:33,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981978949] [2020-12-22 04:29:33,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:29:33,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:29:33,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:29:33,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981978949] [2020-12-22 04:29:33,476 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:29:33,476 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 04:29:33,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257025618] [2020-12-22 04:29:33,477 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 04:29:33,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:29:33,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 04:29:33,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-22 04:29:33,478 INFO L87 Difference]: Start difference. First operand 60 states and 67 transitions. Second operand 6 states. [2020-12-22 04:29:33,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:29:33,617 INFO L93 Difference]: Finished difference Result 87 states and 96 transitions. [2020-12-22 04:29:33,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 04:29:33,618 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-12-22 04:29:33,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:29:33,618 INFO L225 Difference]: With dead ends: 87 [2020-12-22 04:29:33,619 INFO L226 Difference]: Without dead ends: 85 [2020-12-22 04:29:33,619 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-22 04:29:33,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-12-22 04:29:33,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 63. [2020-12-22 04:29:33,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-12-22 04:29:33,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 70 transitions. [2020-12-22 04:29:33,624 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 70 transitions. Word has length 15 [2020-12-22 04:29:33,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:29:33,625 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 70 transitions. [2020-12-22 04:29:33,625 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 04:29:33,625 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 70 transitions. [2020-12-22 04:29:33,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-22 04:29:33,625 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:29:33,626 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:29:33,626 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 04:29:33,626 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:29:33,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:29:33,627 INFO L82 PathProgramCache]: Analyzing trace with hash -441974753, now seen corresponding path program 1 times [2020-12-22 04:29:33,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:29:33,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903031302] [2020-12-22 04:29:33,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:29:33,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:29:33,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:29:33,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903031302] [2020-12-22 04:29:33,663 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:29:33,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 04:29:33,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270555054] [2020-12-22 04:29:33,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 04:29:33,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:29:33,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 04:29:33,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 04:29:33,665 INFO L87 Difference]: Start difference. First operand 63 states and 70 transitions. Second operand 4 states. [2020-12-22 04:29:33,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:29:33,700 INFO L93 Difference]: Finished difference Result 63 states and 70 transitions. [2020-12-22 04:29:33,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 04:29:33,701 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-12-22 04:29:33,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:29:33,702 INFO L225 Difference]: With dead ends: 63 [2020-12-22 04:29:33,702 INFO L226 Difference]: Without dead ends: 61 [2020-12-22 04:29:33,703 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 04:29:33,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-12-22 04:29:33,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-12-22 04:29:33,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-12-22 04:29:33,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 68 transitions. [2020-12-22 04:29:33,708 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 68 transitions. Word has length 16 [2020-12-22 04:29:33,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:29:33,710 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 68 transitions. [2020-12-22 04:29:33,710 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 04:29:33,710 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 68 transitions. [2020-12-22 04:29:33,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-22 04:29:33,711 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:29:33,711 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:29:33,711 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 04:29:33,711 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:29:33,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:29:33,712 INFO L82 PathProgramCache]: Analyzing trace with hash -816311340, now seen corresponding path program 1 times [2020-12-22 04:29:33,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:29:33,712 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687462269] [2020-12-22 04:29:33,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:29:33,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:29:33,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:29:33,759 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687462269] [2020-12-22 04:29:33,759 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:29:33,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 04:29:33,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646636175] [2020-12-22 04:29:33,762 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 04:29:33,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:29:33,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 04:29:33,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 04:29:33,764 INFO L87 Difference]: Start difference. First operand 61 states and 68 transitions. Second operand 4 states. [2020-12-22 04:29:33,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:29:33,813 INFO L93 Difference]: Finished difference Result 61 states and 68 transitions. [2020-12-22 04:29:33,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 04:29:33,813 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-12-22 04:29:33,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:29:33,814 INFO L225 Difference]: With dead ends: 61 [2020-12-22 04:29:33,814 INFO L226 Difference]: Without dead ends: 57 [2020-12-22 04:29:33,815 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 04:29:33,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-12-22 04:29:33,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-12-22 04:29:33,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-12-22 04:29:33,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 64 transitions. [2020-12-22 04:29:33,820 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 64 transitions. Word has length 17 [2020-12-22 04:29:33,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:29:33,820 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 64 transitions. [2020-12-22 04:29:33,820 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 04:29:33,820 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 64 transitions. [2020-12-22 04:29:33,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-22 04:29:33,821 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:29:33,821 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:29:33,821 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 04:29:33,821 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:29:33,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:29:33,822 INFO L82 PathProgramCache]: Analyzing trace with hash -508949322, now seen corresponding path program 1 times [2020-12-22 04:29:33,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:29:33,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348999588] [2020-12-22 04:29:33,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:29:33,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:29:33,898 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:29:33,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348999588] [2020-12-22 04:29:33,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [821417362] [2020-12-22 04:29:33,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:29:33,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:29:34,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-22 04:29:34,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:29:34,211 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:29:34,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 04:29:34,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 11 [2020-12-22 04:29:34,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981771723] [2020-12-22 04:29:34,213 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 04:29:34,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:29:34,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 04:29:34,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-12-22 04:29:34,214 INFO L87 Difference]: Start difference. First operand 57 states and 64 transitions. Second operand 11 states. [2020-12-22 04:29:34,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:29:34,452 INFO L93 Difference]: Finished difference Result 93 states and 104 transitions. [2020-12-22 04:29:34,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 04:29:34,452 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 18 [2020-12-22 04:29:34,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:29:34,453 INFO L225 Difference]: With dead ends: 93 [2020-12-22 04:29:34,453 INFO L226 Difference]: Without dead ends: 91 [2020-12-22 04:29:34,454 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-12-22 04:29:34,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-12-22 04:29:34,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 53. [2020-12-22 04:29:34,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-12-22 04:29:34,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 60 transitions. [2020-12-22 04:29:34,460 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 60 transitions. Word has length 18 [2020-12-22 04:29:34,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:29:34,460 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 60 transitions. [2020-12-22 04:29:34,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 04:29:34,461 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 60 transitions. [2020-12-22 04:29:34,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-22 04:29:34,461 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:29:34,461 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:29:34,674 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:29:34,675 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:29:34,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:29:34,676 INFO L82 PathProgramCache]: Analyzing trace with hash 479271318, now seen corresponding path program 1 times [2020-12-22 04:29:34,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:29:34,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217374988] [2020-12-22 04:29:34,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:29:34,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:29:34,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:29:34,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217374988] [2020-12-22 04:29:34,741 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:29:34,741 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 04:29:34,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526098243] [2020-12-22 04:29:34,741 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 04:29:34,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:29:34,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 04:29:34,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 04:29:34,742 INFO L87 Difference]: Start difference. First operand 53 states and 60 transitions. Second operand 6 states. [2020-12-22 04:29:34,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:29:34,838 INFO L93 Difference]: Finished difference Result 68 states and 77 transitions. [2020-12-22 04:29:34,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 04:29:34,838 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-12-22 04:29:34,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:29:34,839 INFO L225 Difference]: With dead ends: 68 [2020-12-22 04:29:34,839 INFO L226 Difference]: Without dead ends: 66 [2020-12-22 04:29:34,839 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 04:29:34,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-12-22 04:29:34,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 48. [2020-12-22 04:29:34,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-12-22 04:29:34,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2020-12-22 04:29:34,844 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 18 [2020-12-22 04:29:34,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:29:34,845 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2020-12-22 04:29:34,845 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 04:29:34,845 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2020-12-22 04:29:34,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-22 04:29:34,845 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:29:34,846 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:29:34,846 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 04:29:34,846 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:29:34,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:29:34,846 INFO L82 PathProgramCache]: Analyzing trace with hash 397067279, now seen corresponding path program 1 times [2020-12-22 04:29:34,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:29:34,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431071260] [2020-12-22 04:29:34,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:29:34,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:29:34,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:29:34,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431071260] [2020-12-22 04:29:34,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:29:34,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 04:29:34,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807173288] [2020-12-22 04:29:34,902 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 04:29:34,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:29:34,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 04:29:34,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 04:29:34,903 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand 6 states. [2020-12-22 04:29:34,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:29:34,999 INFO L93 Difference]: Finished difference Result 60 states and 69 transitions. [2020-12-22 04:29:35,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 04:29:35,000 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-12-22 04:29:35,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:29:35,002 INFO L225 Difference]: With dead ends: 60 [2020-12-22 04:29:35,002 INFO L226 Difference]: Without dead ends: 58 [2020-12-22 04:29:35,002 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 04:29:35,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-12-22 04:29:35,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 43. [2020-12-22 04:29:35,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-12-22 04:29:35,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2020-12-22 04:29:35,007 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 19 [2020-12-22 04:29:35,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:29:35,007 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2020-12-22 04:29:35,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 04:29:35,007 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2020-12-22 04:29:35,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-22 04:29:35,008 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:29:35,008 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:29:35,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 04:29:35,008 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:29:35,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:29:35,009 INFO L82 PathProgramCache]: Analyzing trace with hash 450508359, now seen corresponding path program 1 times [2020-12-22 04:29:35,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:29:35,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524201118] [2020-12-22 04:29:35,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:29:35,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:29:35,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:29:35,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524201118] [2020-12-22 04:29:35,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:29:35,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 04:29:35,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403583382] [2020-12-22 04:29:35,055 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 04:29:35,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:29:35,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 04:29:35,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 04:29:35,056 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand 6 states. [2020-12-22 04:29:35,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:29:35,127 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2020-12-22 04:29:35,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 04:29:35,128 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-12-22 04:29:35,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:29:35,128 INFO L225 Difference]: With dead ends: 43 [2020-12-22 04:29:35,128 INFO L226 Difference]: Without dead ends: 20 [2020-12-22 04:29:35,129 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 04:29:35,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-12-22 04:29:35,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-12-22 04:29:35,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-12-22 04:29:35,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2020-12-22 04:29:35,131 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 19 [2020-12-22 04:29:35,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:29:35,131 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2020-12-22 04:29:35,131 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 04:29:35,131 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2020-12-22 04:29:35,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-22 04:29:35,132 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:29:35,132 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:29:35,132 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 04:29:35,132 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:29:35,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:29:35,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1395641153, now seen corresponding path program 1 times [2020-12-22 04:29:35,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:29:35,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169546215] [2020-12-22 04:29:35,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:29:35,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:29:35,183 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:29:35,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169546215] [2020-12-22 04:29:35,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751303586] [2020-12-22 04:29:35,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:29:35,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:29:35,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-22 04:29:35,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:29:35,366 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:29:35,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 04:29:35,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 11 [2020-12-22 04:29:35,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063644327] [2020-12-22 04:29:35,368 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 04:29:35,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:29:35,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 04:29:35,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-12-22 04:29:35,369 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 11 states. [2020-12-22 04:29:35,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:29:35,478 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2020-12-22 04:29:35,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 04:29:35,479 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2020-12-22 04:29:35,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:29:35,479 INFO L225 Difference]: With dead ends: 20 [2020-12-22 04:29:35,479 INFO L226 Difference]: Without dead ends: 0 [2020-12-22 04:29:35,480 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2020-12-22 04:29:35,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-22 04:29:35,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-22 04:29:35,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-22 04:29:35,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-22 04:29:35,481 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-12-22 04:29:35,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:29:35,481 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-22 04:29:35,482 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 04:29:35,482 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-22 04:29:35,482 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-22 04:29:35,697 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-12-22 04:29:35,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-22 04:29:36,125 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 30 [2020-12-22 04:29:36,369 WARN L197 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 29 [2020-12-22 04:29:36,455 INFO L189 CegarLoopUtils]: For program point L225(line 225) no Hoare annotation was computed. [2020-12-22 04:29:36,455 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION(line 189) no Hoare annotation was computed. [2020-12-22 04:29:36,455 INFO L189 CegarLoopUtils]: For program point L349(lines 349 358) no Hoare annotation was computed. [2020-12-22 04:29:36,455 INFO L185 CegarLoopUtils]: At program point L250(lines 102 252) the Hoare annotation is: (and (< ULTIMATE.start_main_~main__t~0 ULTIMATE.start_main_~main__tagbuf_len~0) (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~0 0)) (<= 1 ULTIMATE.start_main_~main__t~0) (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~1 0))) [2020-12-22 04:29:36,455 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 56) no Hoare annotation was computed. [2020-12-22 04:29:36,456 INFO L189 CegarLoopUtils]: For program point L85(line 85) no Hoare annotation was computed. [2020-12-22 04:29:36,456 INFO L189 CegarLoopUtils]: For program point L308(lines 308 316) no Hoare annotation was computed. [2020-12-22 04:29:36,456 INFO L189 CegarLoopUtils]: For program point L143(line 143) no Hoare annotation was computed. [2020-12-22 04:29:36,456 INFO L189 CegarLoopUtils]: For program point L44(line 44) no Hoare annotation was computed. [2020-12-22 04:29:36,456 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION(line 279) no Hoare annotation was computed. [2020-12-22 04:29:36,456 INFO L189 CegarLoopUtils]: For program point L102(lines 102 252) no Hoare annotation was computed. [2020-12-22 04:29:36,456 INFO L189 CegarLoopUtils]: For program point L325(lines 325 362) no Hoare annotation was computed. [2020-12-22 04:29:36,456 INFO L189 CegarLoopUtils]: For program point L127(line 127) no Hoare annotation was computed. [2020-12-22 04:29:36,457 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 115) no Hoare annotation was computed. [2020-12-22 04:29:36,457 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-22 04:29:36,457 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-22 04:29:36,457 INFO L189 CegarLoopUtils]: For program point L20(lines 20 374) no Hoare annotation was computed. [2020-12-22 04:29:36,457 INFO L189 CegarLoopUtils]: For program point L177(line 177) no Hoare annotation was computed. [2020-12-22 04:29:36,457 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION(line 339) no Hoare annotation was computed. [2020-12-22 04:29:36,457 INFO L189 CegarLoopUtils]: For program point L235(lines 235 243) no Hoare annotation was computed. [2020-12-22 04:29:36,457 INFO L189 CegarLoopUtils]: For program point L351(line 351) no Hoare annotation was computed. [2020-12-22 04:29:36,458 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION(line 237) no Hoare annotation was computed. [2020-12-22 04:29:36,458 INFO L189 CegarLoopUtils]: For program point L153(lines 153 161) no Hoare annotation was computed. [2020-12-22 04:29:36,458 INFO L189 CegarLoopUtils]: For program point L54(lines 54 254) no Hoare annotation was computed. [2020-12-22 04:29:36,458 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 85) no Hoare annotation was computed. [2020-12-22 04:29:36,458 INFO L189 CegarLoopUtils]: For program point L310(line 310) no Hoare annotation was computed. [2020-12-22 04:29:36,458 INFO L189 CegarLoopUtils]: For program point L277(lines 277 364) no Hoare annotation was computed. [2020-12-22 04:29:36,458 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION(line 310) no Hoare annotation was computed. [2020-12-22 04:29:36,458 INFO L189 CegarLoopUtils]: For program point L71(lines 71 95) no Hoare annotation was computed. [2020-12-22 04:29:36,458 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 143) no Hoare annotation was computed. [2020-12-22 04:29:36,459 INFO L189 CegarLoopUtils]: For program point L187(lines 187 197) no Hoare annotation was computed. [2020-12-22 04:29:36,459 INFO L189 CegarLoopUtils]: For program point L113(lines 113 204) no Hoare annotation was computed. [2020-12-22 04:29:36,459 INFO L189 CegarLoopUtils]: For program point L237(line 237) no Hoare annotation was computed. [2020-12-22 04:29:36,459 INFO L185 CegarLoopUtils]: At program point L328(lines 32 368) the Hoare annotation is: (let ((.cse0 (< 0 ULTIMATE.start_main_~main__tagbuf_len~0)) (.cse3 (<= ULTIMATE.start_main_~main__t~0 1))) (let ((.cse1 (let ((.cse4 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~13 0)))) (or (and .cse4 .cse0 .cse3) (and .cse4 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~17 0)))))) (.cse2 (= ULTIMATE.start_main_~__VERIFIER_assert__cond~12 1))) (or (and .cse0 (= ULTIMATE.start_main_~main__t~0 0)) (and (not (= ULTIMATE.start_main_~main__t~0 ULTIMATE.start_main_~main__tagbuf_len~0)) .cse1 (<= 1 ULTIMATE.start_main_~main__t~0) (<= ULTIMATE.start_main_~main__t~0 ULTIMATE.start_main_~main__tagbuf_len~0) (= ULTIMATE.start_main_~__VERIFIER_assert__cond~17 1) .cse2) (and (< ULTIMATE.start_main_~main__t~0 ULTIMATE.start_main_~main__tagbuf_len~0) .cse1 (<= 0 ULTIMATE.start_main_~main__t~0) .cse3 .cse2)))) [2020-12-22 04:29:36,459 INFO L185 CegarLoopUtils]: At program point L196(lines 60 254) the Hoare annotation is: (and (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~0 0)) (<= 1 ULTIMATE.start_main_~main__t~0) (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~1 0)) (<= ULTIMATE.start_main_~main__t~0 ULTIMATE.start_main_~main__tagbuf_len~0)) [2020-12-22 04:29:36,459 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 127) no Hoare annotation was computed. [2020-12-22 04:29:36,460 INFO L189 CegarLoopUtils]: For program point L155(line 155) no Hoare annotation was computed. [2020-12-22 04:29:36,460 INFO L189 CegarLoopUtils]: For program point L56(line 56) no Hoare annotation was computed. [2020-12-22 04:29:36,460 INFO L189 CegarLoopUtils]: For program point L279(line 279) no Hoare annotation was computed. [2020-12-22 04:29:36,460 INFO L189 CegarLoopUtils]: For program point L337(lines 337 360) no Hoare annotation was computed. [2020-12-22 04:29:36,460 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION(line 351) no Hoare annotation was computed. [2020-12-22 04:29:36,460 INFO L189 CegarLoopUtils]: For program point L106(lines 106 210) no Hoare annotation was computed. [2020-12-22 04:29:36,460 INFO L189 CegarLoopUtils]: For program point L73(line 73) no Hoare annotation was computed. [2020-12-22 04:29:36,460 INFO L189 CegarLoopUtils]: For program point L296(lines 296 318) no Hoare annotation was computed. [2020-12-22 04:29:36,461 INFO L189 CegarLoopUtils]: For program point L32(lines 32 368) no Hoare annotation was computed. [2020-12-22 04:29:36,461 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-22 04:29:36,461 INFO L189 CegarLoopUtils]: For program point L189(line 189) no Hoare annotation was computed. [2020-12-22 04:29:36,461 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION(line 177) no Hoare annotation was computed. [2020-12-22 04:29:36,461 INFO L189 CegarLoopUtils]: For program point L24(lines 24 369) no Hoare annotation was computed. [2020-12-22 04:29:36,461 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 44) no Hoare annotation was computed. [2020-12-22 04:29:36,461 INFO L189 CegarLoopUtils]: For program point L115(line 115) no Hoare annotation was computed. [2020-12-22 04:29:36,461 INFO L189 CegarLoopUtils]: For program point L289(lines 289 363) no Hoare annotation was computed. [2020-12-22 04:29:36,462 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-22 04:29:36,462 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION(line 155) no Hoare annotation was computed. [2020-12-22 04:29:36,462 INFO L189 CegarLoopUtils]: For program point L223(lines 223 245) no Hoare annotation was computed. [2020-12-22 04:29:36,462 INFO L189 CegarLoopUtils]: For program point L83(lines 83 93) no Hoare annotation was computed. [2020-12-22 04:29:36,462 INFO L189 CegarLoopUtils]: For program point L339(line 339) no Hoare annotation was computed. [2020-12-22 04:29:36,462 INFO L189 CegarLoopUtils]: For program point L141(lines 141 163) no Hoare annotation was computed. [2020-12-22 04:29:36,462 INFO L189 CegarLoopUtils]: For program point L42(lines 42 256) no Hoare annotation was computed. [2020-12-22 04:29:36,462 INFO L189 CegarLoopUtils]: For program point L298(line 298) no Hoare annotation was computed. [2020-12-22 04:29:36,462 INFO L189 CegarLoopUtils]: For program point L125(lines 125 202) no Hoare annotation was computed. [2020-12-22 04:29:36,463 INFO L192 CegarLoopUtils]: At program point L315(lines 32 368) the Hoare annotation is: true [2020-12-22 04:29:36,463 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION(line 225) no Hoare annotation was computed. [2020-12-22 04:29:36,463 INFO L189 CegarLoopUtils]: For program point L216(lines 216 251) no Hoare annotation was computed. [2020-12-22 04:29:36,463 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 73) no Hoare annotation was computed. [2020-12-22 04:29:36,463 INFO L192 CegarLoopUtils]: At program point L373(lines 15 375) the Hoare annotation is: true [2020-12-22 04:29:36,463 INFO L189 CegarLoopUtils]: For program point L175(lines 175 199) no Hoare annotation was computed. [2020-12-22 04:29:36,463 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION(line 298) no Hoare annotation was computed. [2020-12-22 04:29:36,463 INFO L189 CegarLoopUtils]: For program point L266(lines 266 366) no Hoare annotation was computed. [2020-12-22 04:29:36,463 INFO L189 CegarLoopUtils]: For program point L134(lines 134 201) no Hoare annotation was computed. [2020-12-22 04:29:36,464 INFO L185 CegarLoopUtils]: At program point L357(lines 283 364) the Hoare annotation is: (let ((.cse2 (= ULTIMATE.start_main_~main__t~0 0))) (let ((.cse0 (let ((.cse3 (let ((.cse4 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~13 0)))) (or (and .cse4 .cse2) (and .cse4 (<= 1 ULTIMATE.start_main_~main__t~0)))))) (or (and .cse3 .cse2) (and .cse3 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~16 0)))))) (.cse1 (= ULTIMATE.start_main_~__VERIFIER_assert__cond~12 1))) (or (and .cse0 (not (= ULTIMATE.start_main_~main__t~0 ULTIMATE.start_main_~main__tagbuf_len~0)) (<= ULTIMATE.start_main_~main__t~0 ULTIMATE.start_main_~main__tagbuf_len~0) (= ULTIMATE.start_main_~__VERIFIER_assert__cond~17 1) .cse1) (and .cse0 (< 0 ULTIMATE.start_main_~main__tagbuf_len~0) .cse2 .cse1)))) [2020-12-22 04:29:36,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 04:29:36 BoogieIcfgContainer [2020-12-22 04:29:36,487 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 04:29:36,488 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 04:29:36,488 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 04:29:36,488 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 04:29:36,488 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:29:30" (3/4) ... [2020-12-22 04:29:36,492 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-22 04:29:36,506 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-12-22 04:29:36,507 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-22 04:29:36,508 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 04:29:36,508 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 04:29:36,577 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c-witness.graphml [2020-12-22 04:29:36,577 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 04:29:36,578 INFO L168 Benchmark]: Toolchain (without parser) took 7692.59 ms. Allocated memory was 152.0 MB in the beginning and 219.2 MB in the end (delta: 67.1 MB). Free memory was 127.6 MB in the beginning and 176.7 MB in the end (delta: -49.1 MB). Peak memory consumption was 18.6 MB. Max. memory is 8.0 GB. [2020-12-22 04:29:36,579 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 152.0 MB. Free memory is still 125.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 04:29:36,582 INFO L168 Benchmark]: CACSL2BoogieTranslator took 438.97 ms. Allocated memory is still 152.0 MB. Free memory was 127.4 MB in the beginning and 112.0 MB in the end (delta: 15.4 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2020-12-22 04:29:36,583 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.49 ms. Allocated memory is still 152.0 MB. Free memory was 111.8 MB in the beginning and 109.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 04:29:36,583 INFO L168 Benchmark]: Boogie Preprocessor took 28.40 ms. Allocated memory is still 152.0 MB. Free memory was 109.8 MB in the beginning and 108.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 04:29:36,584 INFO L168 Benchmark]: RCFGBuilder took 713.34 ms. Allocated memory is still 152.0 MB. Free memory was 108.6 MB in the beginning and 117.0 MB in the end (delta: -8.4 MB). Peak memory consumption was 10.7 MB. Max. memory is 8.0 GB. [2020-12-22 04:29:36,584 INFO L168 Benchmark]: TraceAbstraction took 6364.63 ms. Allocated memory was 152.0 MB in the beginning and 219.2 MB in the end (delta: 67.1 MB). Free memory was 116.5 MB in the beginning and 182.5 MB in the end (delta: -66.0 MB). Peak memory consumption was 109.6 MB. Max. memory is 8.0 GB. [2020-12-22 04:29:36,584 INFO L168 Benchmark]: Witness Printer took 89.49 ms. Allocated memory is still 219.2 MB. Free memory was 182.5 MB in the beginning and 176.7 MB in the end (delta: 5.8 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. [2020-12-22 04:29:36,589 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 152.0 MB. Free memory is still 125.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 438.97 ms. Allocated memory is still 152.0 MB. Free memory was 127.4 MB in the beginning and 112.0 MB in the end (delta: 15.4 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 45.49 ms. Allocated memory is still 152.0 MB. Free memory was 111.8 MB in the beginning and 109.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 28.40 ms. Allocated memory is still 152.0 MB. Free memory was 109.8 MB in the beginning and 108.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 713.34 ms. Allocated memory is still 152.0 MB. Free memory was 108.6 MB in the beginning and 117.0 MB in the end (delta: -8.4 MB). Peak memory consumption was 10.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 6364.63 ms. Allocated memory was 152.0 MB in the beginning and 219.2 MB in the end (delta: 67.1 MB). Free memory was 116.5 MB in the beginning and 182.5 MB in the end (delta: -66.0 MB). Peak memory consumption was 109.6 MB. Max. memory is 8.0 GB. * Witness Printer took 89.49 ms. Allocated memory is still 219.2 MB. Free memory was 182.5 MB in the beginning and 176.7 MB in the end (delta: 5.8 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 56]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 177]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 155]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 351]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 339]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 85]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 44]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 73]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 279]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 115]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 127]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 143]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 225]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 310]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 298]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 237]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 189]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 17 specifications checked. All of them hold - InvariantResult [Line: 102]: Loop Invariant Derived loop invariant: ((main__t < main__tagbuf_len && !(__VERIFIER_assert__cond == 0)) && 1 <= main__t) && !(__VERIFIER_assert__cond == 0) - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: ((0 < main__tagbuf_len && main__t == 0) || (((((!(main__t == main__tagbuf_len) && (((!(__VERIFIER_assert__cond == 0) && 0 < main__tagbuf_len) && main__t <= 1) || (!(__VERIFIER_assert__cond == 0) && !(__VERIFIER_assert__cond == 0)))) && 1 <= main__t) && main__t <= main__tagbuf_len) && __VERIFIER_assert__cond == 1) && __VERIFIER_assert__cond == 1)) || ((((main__t < main__tagbuf_len && (((!(__VERIFIER_assert__cond == 0) && 0 < main__tagbuf_len) && main__t <= 1) || (!(__VERIFIER_assert__cond == 0) && !(__VERIFIER_assert__cond == 0)))) && 0 <= main__t) && main__t <= 1) && __VERIFIER_assert__cond == 1) - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 283]: Loop Invariant Derived loop invariant: ((((((((!(__VERIFIER_assert__cond == 0) && main__t == 0) || (!(__VERIFIER_assert__cond == 0) && 1 <= main__t)) && main__t == 0) || (((!(__VERIFIER_assert__cond == 0) && main__t == 0) || (!(__VERIFIER_assert__cond == 0) && 1 <= main__t)) && !(__VERIFIER_assert__cond == 0))) && !(main__t == main__tagbuf_len)) && main__t <= main__tagbuf_len) && __VERIFIER_assert__cond == 1) && __VERIFIER_assert__cond == 1) || (((((((!(__VERIFIER_assert__cond == 0) && main__t == 0) || (!(__VERIFIER_assert__cond == 0) && 1 <= main__t)) && main__t == 0) || (((!(__VERIFIER_assert__cond == 0) && main__t == 0) || (!(__VERIFIER_assert__cond == 0) && 1 <= main__t)) && !(__VERIFIER_assert__cond == 0))) && 0 < main__tagbuf_len) && main__t == 0) && __VERIFIER_assert__cond == 1) - InvariantResult [Line: 60]: Loop Invariant Derived loop invariant: ((!(__VERIFIER_assert__cond == 0) && 1 <= main__t) && !(__VERIFIER_assert__cond == 0)) && main__t <= main__tagbuf_len - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 71 locations, 17 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.5s, OverallIterations: 23, TraceHistogramMax: 2, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 959 SDtfs, 1523 SDslu, 1370 SDs, 0 SdLazy, 1647 SolverSat, 154 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 207 GetRequests, 82 SyntacticMatches, 4 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=71occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 23 MinimizatonAttempts, 338 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 14 NumberOfFragments, 225 HoareAnnotationTreeSize, 6 FomulaSimplifications, 257383 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 6 FomulaSimplificationsInter, 16323 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 356 NumberOfCodeBlocks, 356 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 331 ConstructedInterpolants, 0 QuantifiedInterpolants, 14875 SizeOfPredicates, 16 NumberOfNonLiveVariables, 237 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 25 InterpolantComputations, 21 PerfectInterpolantSequences, 8/16 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...