/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/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 08:40:35,192 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 08:40:35,195 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 08:40:35,248 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 08:40:35,248 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 08:40:35,252 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 08:40:35,256 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 08:40:35,263 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 08:40:35,280 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 08:40:35,286 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 08:40:35,287 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 08:40:35,288 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 08:40:35,289 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 08:40:35,291 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 08:40:35,293 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 08:40:35,295 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 08:40:35,296 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 08:40:35,299 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 08:40:35,305 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 08:40:35,311 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 08:40:35,313 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 08:40:35,315 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 08:40:35,316 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 08:40:35,317 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 08:40:35,324 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 08:40:35,325 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 08:40:35,325 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 08:40:35,328 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 08:40:35,328 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 08:40:35,329 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 08:40:35,330 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 08:40:35,330 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 08:40:35,332 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 08:40:35,333 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 08:40:35,334 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 08:40:35,334 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 08:40:35,335 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 08:40:35,335 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 08:40:35,335 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 08:40:35,336 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 08:40:35,337 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 08:40:35,338 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 08:40:35,391 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 08:40:35,391 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 08:40:35,397 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 08:40:35,397 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 08:40:35,397 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 08:40:35,397 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 08:40:35,398 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 08:40:35,398 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 08:40:35,398 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 08:40:35,398 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 08:40:35,400 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 08:40:35,400 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 08:40:35,400 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 08:40:35,400 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 08:40:35,401 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 08:40:35,401 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 08:40:35,401 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 08:40:35,401 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:40:35,401 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 08:40:35,402 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 08:40:35,402 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 08:40:35,402 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 08:40:35,402 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 08:40:35,403 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 08:40:35,403 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 08:40:35,403 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 08:40:35,833 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 08:40:35,859 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 08:40:35,862 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 08:40:35,863 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 08:40:35,864 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 08:40:35,865 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c [2020-12-22 08:40:35,944 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7eaef601c/945f90a75fba425fbbf17b6854860f64/FLAG3d7fe9cfd [2020-12-22 08:40:36,842 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 08:40:36,843 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c [2020-12-22 08:40:36,863 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7eaef601c/945f90a75fba425fbbf17b6854860f64/FLAG3d7fe9cfd [2020-12-22 08:40:37,013 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7eaef601c/945f90a75fba425fbbf17b6854860f64 [2020-12-22 08:40:37,017 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 08:40:37,021 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 08:40:37,025 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 08:40:37,025 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 08:40:37,029 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 08:40:37,030 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:40:37" (1/1) ... [2020-12-22 08:40:37,032 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c14c6a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:40:37, skipping insertion in model container [2020-12-22 08:40:37,032 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:40:37" (1/1) ... [2020-12-22 08:40:37,041 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 08:40:37,147 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 08:40:37,484 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/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[18453,18466] [2020-12-22 08:40:37,555 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/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[25553,25566] [2020-12-22 08:40:37,581 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/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[29078,29091] [2020-12-22 08:40:37,662 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/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[32476,32489] [2020-12-22 08:40:37,700 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/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[36534,36547] [2020-12-22 08:40:37,737 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/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[40008,40021] [2020-12-22 08:40:37,769 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/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[43573,43586] [2020-12-22 08:40:37,797 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/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[47008,47021] [2020-12-22 08:40:37,828 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/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[50687,50700] [2020-12-22 08:40:37,841 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/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[54289,54302] [2020-12-22 08:40:37,854 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/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[57818,57831] [2020-12-22 08:40:37,895 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:40:37,909 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 08:40:38,112 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/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[18453,18466] [2020-12-22 08:40:38,142 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/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[25553,25566] [2020-12-22 08:40:38,153 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/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[29078,29091] [2020-12-22 08:40:38,163 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/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[32476,32489] [2020-12-22 08:40:38,175 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/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[36534,36547] [2020-12-22 08:40:38,184 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/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[40008,40021] [2020-12-22 08:40:38,195 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/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[43573,43586] [2020-12-22 08:40:38,204 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/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[47008,47021] [2020-12-22 08:40:38,215 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/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[50687,50700] [2020-12-22 08:40:38,225 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/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[54289,54302] [2020-12-22 08:40:38,235 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/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[57818,57831] [2020-12-22 08:40:38,257 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:40:38,280 INFO L208 MainTranslator]: Completed translation [2020-12-22 08:40:38,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:40:38 WrapperNode [2020-12-22 08:40:38,281 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 08:40:38,282 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 08:40:38,282 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 08:40:38,283 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 08:40:38,291 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:40:38" (1/1) ... [2020-12-22 08:40:38,320 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:40:38" (1/1) ... [2020-12-22 08:40:38,420 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 08:40:38,426 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 08:40:38,427 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 08:40:38,427 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 08:40:38,441 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:40:38" (1/1) ... [2020-12-22 08:40:38,442 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:40:38" (1/1) ... [2020-12-22 08:40:38,461 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:40:38" (1/1) ... [2020-12-22 08:40:38,461 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:40:38" (1/1) ... [2020-12-22 08:40:38,518 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:40:38" (1/1) ... [2020-12-22 08:40:38,562 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:40:38" (1/1) ... [2020-12-22 08:40:38,575 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:40:38" (1/1) ... [2020-12-22 08:40:38,592 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 08:40:38,593 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 08:40:38,593 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 08:40:38,593 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 08:40:38,594 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:40:38" (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 08:40:38,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 08:40:38,703 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 08:40:38,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 08:40:38,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 08:40:41,261 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 08:40:41,261 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 08:40:41,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:40:41 BoogieIcfgContainer [2020-12-22 08:40:41,264 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 08:40:41,266 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 08:40:41,266 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 08:40:41,270 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 08:40:41,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 08:40:37" (1/3) ... [2020-12-22 08:40:41,271 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50be2066 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:40:41, skipping insertion in model container [2020-12-22 08:40:41,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:40:38" (2/3) ... [2020-12-22 08:40:41,272 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50be2066 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:40:41, skipping insertion in model container [2020-12-22 08:40:41,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:40:41" (3/3) ... [2020-12-22 08:40:41,273 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c [2020-12-22 08:40:41,280 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 08:40:41,285 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2020-12-22 08:40:41,304 INFO L253 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2020-12-22 08:40:41,337 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 08:40:41,337 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 08:40:41,337 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 08:40:41,337 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 08:40:41,337 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 08:40:41,338 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 08:40:41,338 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 08:40:41,338 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 08:40:41,365 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states. [2020-12-22 08:40:41,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-22 08:40:41,384 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:40:41,385 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:40:41,385 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:40:41,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:40:41,392 INFO L82 PathProgramCache]: Analyzing trace with hash 646480323, now seen corresponding path program 1 times [2020-12-22 08:40:41,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:40:41,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312960661] [2020-12-22 08:40:41,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:40:41,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:40:41,954 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 08:40:41,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312960661] [2020-12-22 08:40:41,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:40:41,957 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:40:41,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815029785] [2020-12-22 08:40:41,963 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:40:41,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:40:41,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:40:41,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:40:41,983 INFO L87 Difference]: Start difference. First operand 570 states. Second operand 6 states. [2020-12-22 08:40:43,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:40:43,080 INFO L93 Difference]: Finished difference Result 898 states and 1501 transitions. [2020-12-22 08:40:43,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:40:43,083 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 60 [2020-12-22 08:40:43,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:40:43,103 INFO L225 Difference]: With dead ends: 898 [2020-12-22 08:40:43,103 INFO L226 Difference]: Without dead ends: 616 [2020-12-22 08:40:43,109 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:40:43,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2020-12-22 08:40:43,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 571. [2020-12-22 08:40:43,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2020-12-22 08:40:43,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 725 transitions. [2020-12-22 08:40:43,202 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 725 transitions. Word has length 60 [2020-12-22 08:40:43,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:40:43,202 INFO L481 AbstractCegarLoop]: Abstraction has 571 states and 725 transitions. [2020-12-22 08:40:43,202 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:40:43,202 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 725 transitions. [2020-12-22 08:40:43,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-22 08:40:43,206 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:40:43,206 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:40:43,207 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 08:40:43,207 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:40:43,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:40:43,208 INFO L82 PathProgramCache]: Analyzing trace with hash 221242932, now seen corresponding path program 1 times [2020-12-22 08:40:43,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:40:43,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104222185] [2020-12-22 08:40:43,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:40:43,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:40:43,413 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 08:40:43,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104222185] [2020-12-22 08:40:43,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:40:43,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:40:43,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492995282] [2020-12-22 08:40:43,417 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:40:43,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:40:43,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:40:43,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:40:43,419 INFO L87 Difference]: Start difference. First operand 571 states and 725 transitions. Second operand 5 states. [2020-12-22 08:40:43,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:40:43,794 INFO L93 Difference]: Finished difference Result 720 states and 926 transitions. [2020-12-22 08:40:43,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:40:43,796 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-12-22 08:40:43,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:40:43,801 INFO L225 Difference]: With dead ends: 720 [2020-12-22 08:40:43,802 INFO L226 Difference]: Without dead ends: 419 [2020-12-22 08:40:43,807 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:40:43,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2020-12-22 08:40:43,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 419. [2020-12-22 08:40:43,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419 states. [2020-12-22 08:40:43,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 531 transitions. [2020-12-22 08:40:43,850 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 531 transitions. Word has length 60 [2020-12-22 08:40:43,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:40:43,851 INFO L481 AbstractCegarLoop]: Abstraction has 419 states and 531 transitions. [2020-12-22 08:40:43,851 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:40:43,851 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 531 transitions. [2020-12-22 08:40:43,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-22 08:40:43,855 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:40:43,856 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:40:43,856 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 08:40:43,857 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:40:43,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:40:43,861 INFO L82 PathProgramCache]: Analyzing trace with hash 2145290279, now seen corresponding path program 1 times [2020-12-22 08:40:43,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:40:43,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459036551] [2020-12-22 08:40:43,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:40:43,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:40:44,028 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 08:40:44,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459036551] [2020-12-22 08:40:44,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:40:44,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:40:44,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428927734] [2020-12-22 08:40:44,030 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:40:44,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:40:44,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:40:44,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:40:44,031 INFO L87 Difference]: Start difference. First operand 419 states and 531 transitions. Second operand 5 states. [2020-12-22 08:40:44,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:40:44,448 INFO L93 Difference]: Finished difference Result 838 states and 1095 transitions. [2020-12-22 08:40:44,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:40:44,449 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-12-22 08:40:44,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:40:44,452 INFO L225 Difference]: With dead ends: 838 [2020-12-22 08:40:44,452 INFO L226 Difference]: Without dead ends: 585 [2020-12-22 08:40:44,453 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:40:44,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2020-12-22 08:40:44,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 537. [2020-12-22 08:40:44,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 537 states. [2020-12-22 08:40:44,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 717 transitions. [2020-12-22 08:40:44,505 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 717 transitions. Word has length 60 [2020-12-22 08:40:44,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:40:44,506 INFO L481 AbstractCegarLoop]: Abstraction has 537 states and 717 transitions. [2020-12-22 08:40:44,506 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:40:44,506 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 717 transitions. [2020-12-22 08:40:44,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-22 08:40:44,508 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:40:44,508 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:40:44,508 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 08:40:44,508 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:40:44,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:40:44,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1041917683, now seen corresponding path program 1 times [2020-12-22 08:40:44,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:40:44,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577967151] [2020-12-22 08:40:44,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:40:44,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:40:44,604 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 08:40:44,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577967151] [2020-12-22 08:40:44,605 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:40:44,605 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:40:44,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398908969] [2020-12-22 08:40:44,606 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:40:44,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:40:44,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:40:44,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:40:44,607 INFO L87 Difference]: Start difference. First operand 537 states and 717 transitions. Second operand 5 states. [2020-12-22 08:40:44,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:40:44,877 INFO L93 Difference]: Finished difference Result 842 states and 1141 transitions. [2020-12-22 08:40:44,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:40:44,877 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2020-12-22 08:40:44,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:40:44,881 INFO L225 Difference]: With dead ends: 842 [2020-12-22 08:40:44,881 INFO L226 Difference]: Without dead ends: 484 [2020-12-22 08:40:44,882 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:40:44,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2020-12-22 08:40:44,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 484. [2020-12-22 08:40:44,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 484 states. [2020-12-22 08:40:44,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 647 transitions. [2020-12-22 08:40:44,921 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 647 transitions. Word has length 62 [2020-12-22 08:40:44,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:40:44,922 INFO L481 AbstractCegarLoop]: Abstraction has 484 states and 647 transitions. [2020-12-22 08:40:44,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:40:44,922 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 647 transitions. [2020-12-22 08:40:44,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 08:40:44,923 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:40:44,924 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:40:44,924 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 08:40:44,924 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:40:44,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:40:44,925 INFO L82 PathProgramCache]: Analyzing trace with hash -699288056, now seen corresponding path program 1 times [2020-12-22 08:40:44,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:40:44,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011529515] [2020-12-22 08:40:44,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:40:44,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:40:45,100 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 08:40:45,100 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011529515] [2020-12-22 08:40:45,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:40:45,101 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:40:45,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275713362] [2020-12-22 08:40:45,102 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:40:45,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:40:45,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:40:45,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:40:45,103 INFO L87 Difference]: Start difference. First operand 484 states and 647 transitions. Second operand 9 states. [2020-12-22 08:40:46,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:40:46,206 INFO L93 Difference]: Finished difference Result 1478 states and 2084 transitions. [2020-12-22 08:40:46,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-22 08:40:46,207 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-12-22 08:40:46,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:40:46,214 INFO L225 Difference]: With dead ends: 1478 [2020-12-22 08:40:46,214 INFO L226 Difference]: Without dead ends: 1227 [2020-12-22 08:40:46,215 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=438, Unknown=0, NotChecked=0, Total=600 [2020-12-22 08:40:46,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1227 states. [2020-12-22 08:40:46,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1227 to 484. [2020-12-22 08:40:46,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 484 states. [2020-12-22 08:40:46,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 646 transitions. [2020-12-22 08:40:46,262 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 646 transitions. Word has length 64 [2020-12-22 08:40:46,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:40:46,263 INFO L481 AbstractCegarLoop]: Abstraction has 484 states and 646 transitions. [2020-12-22 08:40:46,263 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:40:46,263 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 646 transitions. [2020-12-22 08:40:46,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 08:40:46,264 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:40:46,264 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:40:46,265 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 08:40:46,265 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:40:46,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:40:46,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1796013608, now seen corresponding path program 1 times [2020-12-22 08:40:46,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:40:46,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756374969] [2020-12-22 08:40:46,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:40:46,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:40:46,429 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 08:40:46,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756374969] [2020-12-22 08:40:46,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:40:46,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:40:46,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627608040] [2020-12-22 08:40:46,431 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:40:46,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:40:46,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:40:46,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:40:46,433 INFO L87 Difference]: Start difference. First operand 484 states and 646 transitions. Second operand 9 states. [2020-12-22 08:40:47,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:40:47,386 INFO L93 Difference]: Finished difference Result 1237 states and 1723 transitions. [2020-12-22 08:40:47,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 08:40:47,386 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-12-22 08:40:47,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:40:47,393 INFO L225 Difference]: With dead ends: 1237 [2020-12-22 08:40:47,393 INFO L226 Difference]: Without dead ends: 1231 [2020-12-22 08:40:47,394 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2020-12-22 08:40:47,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1231 states. [2020-12-22 08:40:47,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1231 to 484. [2020-12-22 08:40:47,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 484 states. [2020-12-22 08:40:47,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 645 transitions. [2020-12-22 08:40:47,445 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 645 transitions. Word has length 64 [2020-12-22 08:40:47,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:40:47,445 INFO L481 AbstractCegarLoop]: Abstraction has 484 states and 645 transitions. [2020-12-22 08:40:47,445 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:40:47,446 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 645 transitions. [2020-12-22 08:40:47,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 08:40:47,447 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:40:47,447 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:40:47,447 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 08:40:47,447 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:40:47,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:40:47,448 INFO L82 PathProgramCache]: Analyzing trace with hash -1577721816, now seen corresponding path program 1 times [2020-12-22 08:40:47,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:40:47,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161151353] [2020-12-22 08:40:47,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:40:47,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:40:47,662 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 08:40:47,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161151353] [2020-12-22 08:40:47,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:40:47,664 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 08:40:47,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210966451] [2020-12-22 08:40:47,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 08:40:47,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:40:47,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 08:40:47,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:40:47,676 INFO L87 Difference]: Start difference. First operand 484 states and 645 transitions. Second operand 8 states. [2020-12-22 08:40:48,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:40:48,251 INFO L93 Difference]: Finished difference Result 1140 states and 1573 transitions. [2020-12-22 08:40:48,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 08:40:48,252 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 64 [2020-12-22 08:40:48,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:40:48,258 INFO L225 Difference]: With dead ends: 1140 [2020-12-22 08:40:48,258 INFO L226 Difference]: Without dead ends: 837 [2020-12-22 08:40:48,265 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-12-22 08:40:48,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 837 states. [2020-12-22 08:40:48,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 837 to 484. [2020-12-22 08:40:48,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 484 states. [2020-12-22 08:40:48,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 644 transitions. [2020-12-22 08:40:48,315 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 644 transitions. Word has length 64 [2020-12-22 08:40:48,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:40:48,316 INFO L481 AbstractCegarLoop]: Abstraction has 484 states and 644 transitions. [2020-12-22 08:40:48,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 08:40:48,317 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 644 transitions. [2020-12-22 08:40:48,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 08:40:48,318 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:40:48,318 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:40:48,318 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 08:40:48,318 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:40:48,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:40:48,319 INFO L82 PathProgramCache]: Analyzing trace with hash -295025225, now seen corresponding path program 1 times [2020-12-22 08:40:48,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:40:48,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921163022] [2020-12-22 08:40:48,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:40:48,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:40:48,513 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 08:40:48,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921163022] [2020-12-22 08:40:48,514 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:40:48,515 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:40:48,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626230217] [2020-12-22 08:40:48,515 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:40:48,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:40:48,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:40:48,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:40:48,517 INFO L87 Difference]: Start difference. First operand 484 states and 644 transitions. Second operand 9 states. [2020-12-22 08:40:49,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:40:49,765 INFO L93 Difference]: Finished difference Result 1442 states and 2031 transitions. [2020-12-22 08:40:49,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 08:40:49,766 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-12-22 08:40:49,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:40:49,772 INFO L225 Difference]: With dead ends: 1442 [2020-12-22 08:40:49,772 INFO L226 Difference]: Without dead ends: 1231 [2020-12-22 08:40:49,773 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2020-12-22 08:40:49,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1231 states. [2020-12-22 08:40:49,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1231 to 484. [2020-12-22 08:40:49,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 484 states. [2020-12-22 08:40:49,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 643 transitions. [2020-12-22 08:40:49,832 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 643 transitions. Word has length 65 [2020-12-22 08:40:49,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:40:49,832 INFO L481 AbstractCegarLoop]: Abstraction has 484 states and 643 transitions. [2020-12-22 08:40:49,832 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:40:49,832 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 643 transitions. [2020-12-22 08:40:49,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 08:40:49,833 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:40:49,834 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:40:49,834 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 08:40:49,834 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:40:49,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:40:49,835 INFO L82 PathProgramCache]: Analyzing trace with hash -535072361, now seen corresponding path program 1 times [2020-12-22 08:40:49,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:40:49,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127239792] [2020-12-22 08:40:49,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:40:49,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:40:50,011 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 08:40:50,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127239792] [2020-12-22 08:40:50,012 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:40:50,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:40:50,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697242501] [2020-12-22 08:40:50,013 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:40:50,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:40:50,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:40:50,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:40:50,014 INFO L87 Difference]: Start difference. First operand 484 states and 643 transitions. Second operand 9 states. [2020-12-22 08:40:50,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:40:50,956 INFO L93 Difference]: Finished difference Result 1479 states and 2085 transitions. [2020-12-22 08:40:50,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 08:40:50,956 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-12-22 08:40:50,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:40:50,963 INFO L225 Difference]: With dead ends: 1479 [2020-12-22 08:40:50,963 INFO L226 Difference]: Without dead ends: 1257 [2020-12-22 08:40:50,964 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2020-12-22 08:40:50,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1257 states. [2020-12-22 08:40:51,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1257 to 484. [2020-12-22 08:40:51,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 484 states. [2020-12-22 08:40:51,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 642 transitions. [2020-12-22 08:40:51,023 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 642 transitions. Word has length 65 [2020-12-22 08:40:51,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:40:51,023 INFO L481 AbstractCegarLoop]: Abstraction has 484 states and 642 transitions. [2020-12-22 08:40:51,023 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:40:51,023 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 642 transitions. [2020-12-22 08:40:51,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 08:40:51,025 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:40:51,025 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:40:51,025 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 08:40:51,025 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:40:51,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:40:51,026 INFO L82 PathProgramCache]: Analyzing trace with hash -168692467, now seen corresponding path program 1 times [2020-12-22 08:40:51,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:40:51,026 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22608346] [2020-12-22 08:40:51,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:40:51,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:40:51,149 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 08:40:51,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22608346] [2020-12-22 08:40:51,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:40:51,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:40:51,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514456370] [2020-12-22 08:40:51,150 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:40:51,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:40:51,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:40:51,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:40:51,151 INFO L87 Difference]: Start difference. First operand 484 states and 642 transitions. Second operand 9 states. [2020-12-22 08:40:52,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:40:52,143 INFO L93 Difference]: Finished difference Result 1276 states and 1776 transitions. [2020-12-22 08:40:52,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 08:40:52,143 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 66 [2020-12-22 08:40:52,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:40:52,150 INFO L225 Difference]: With dead ends: 1276 [2020-12-22 08:40:52,150 INFO L226 Difference]: Without dead ends: 1257 [2020-12-22 08:40:52,151 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2020-12-22 08:40:52,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1257 states. [2020-12-22 08:40:52,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1257 to 484. [2020-12-22 08:40:52,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 484 states. [2020-12-22 08:40:52,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 640 transitions. [2020-12-22 08:40:52,219 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 640 transitions. Word has length 66 [2020-12-22 08:40:52,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:40:52,220 INFO L481 AbstractCegarLoop]: Abstraction has 484 states and 640 transitions. [2020-12-22 08:40:52,220 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:40:52,220 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 640 transitions. [2020-12-22 08:40:52,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 08:40:52,221 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:40:52,221 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:40:52,221 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 08:40:52,222 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:40:52,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:40:52,222 INFO L82 PathProgramCache]: Analyzing trace with hash 1424145869, now seen corresponding path program 1 times [2020-12-22 08:40:52,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:40:52,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225677975] [2020-12-22 08:40:52,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:40:52,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:40:52,344 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 08:40:52,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225677975] [2020-12-22 08:40:52,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:40:52,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:40:52,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497437432] [2020-12-22 08:40:52,345 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:40:52,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:40:52,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:40:52,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:40:52,348 INFO L87 Difference]: Start difference. First operand 484 states and 640 transitions. Second operand 9 states. [2020-12-22 08:40:53,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:40:53,453 INFO L93 Difference]: Finished difference Result 1237 states and 1716 transitions. [2020-12-22 08:40:53,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 08:40:53,454 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 66 [2020-12-22 08:40:53,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:40:53,460 INFO L225 Difference]: With dead ends: 1237 [2020-12-22 08:40:53,460 INFO L226 Difference]: Without dead ends: 1231 [2020-12-22 08:40:53,461 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2020-12-22 08:40:53,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1231 states. [2020-12-22 08:40:53,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1231 to 484. [2020-12-22 08:40:53,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 484 states. [2020-12-22 08:40:53,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 638 transitions. [2020-12-22 08:40:53,529 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 638 transitions. Word has length 66 [2020-12-22 08:40:53,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:40:53,529 INFO L481 AbstractCegarLoop]: Abstraction has 484 states and 638 transitions. [2020-12-22 08:40:53,529 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:40:53,529 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 638 transitions. [2020-12-22 08:40:53,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 08:40:53,530 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:40:53,530 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:40:53,531 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 08:40:53,531 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:40:53,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:40:53,531 INFO L82 PathProgramCache]: Analyzing trace with hash -155488627, now seen corresponding path program 1 times [2020-12-22 08:40:53,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:40:53,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877834576] [2020-12-22 08:40:53,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:40:53,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:40:53,696 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 08:40:53,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877834576] [2020-12-22 08:40:53,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:40:53,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 08:40:53,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484079184] [2020-12-22 08:40:53,698 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 08:40:53,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:40:53,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 08:40:53,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-12-22 08:40:53,699 INFO L87 Difference]: Start difference. First operand 484 states and 638 transitions. Second operand 10 states. [2020-12-22 08:40:55,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:40:55,141 INFO L93 Difference]: Finished difference Result 1388 states and 1937 transitions. [2020-12-22 08:40:55,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-22 08:40:55,142 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 66 [2020-12-22 08:40:55,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:40:55,147 INFO L225 Difference]: With dead ends: 1388 [2020-12-22 08:40:55,147 INFO L226 Difference]: Without dead ends: 1128 [2020-12-22 08:40:55,149 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2020-12-22 08:40:55,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1128 states. [2020-12-22 08:40:55,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1128 to 484. [2020-12-22 08:40:55,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 484 states. [2020-12-22 08:40:55,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 637 transitions. [2020-12-22 08:40:55,224 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 637 transitions. Word has length 66 [2020-12-22 08:40:55,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:40:55,224 INFO L481 AbstractCegarLoop]: Abstraction has 484 states and 637 transitions. [2020-12-22 08:40:55,224 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 08:40:55,225 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 637 transitions. [2020-12-22 08:40:55,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 08:40:55,226 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:40:55,226 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:40:55,227 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 08:40:55,227 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:40:55,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:40:55,227 INFO L82 PathProgramCache]: Analyzing trace with hash -131812051, now seen corresponding path program 1 times [2020-12-22 08:40:55,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:40:55,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190835050] [2020-12-22 08:40:55,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:40:55,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:40:55,368 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 08:40:55,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190835050] [2020-12-22 08:40:55,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:40:55,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:40:55,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340931927] [2020-12-22 08:40:55,370 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:40:55,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:40:55,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:40:55,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:40:55,371 INFO L87 Difference]: Start difference. First operand 484 states and 637 transitions. Second operand 9 states. [2020-12-22 08:40:56,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:40:56,451 INFO L93 Difference]: Finished difference Result 1445 states and 2027 transitions. [2020-12-22 08:40:56,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 08:40:56,451 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 66 [2020-12-22 08:40:56,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:40:56,457 INFO L225 Difference]: With dead ends: 1445 [2020-12-22 08:40:56,457 INFO L226 Difference]: Without dead ends: 1231 [2020-12-22 08:40:56,458 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2020-12-22 08:40:56,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1231 states. [2020-12-22 08:40:56,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1231 to 484. [2020-12-22 08:40:56,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 484 states. [2020-12-22 08:40:56,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 636 transitions. [2020-12-22 08:40:56,538 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 636 transitions. Word has length 66 [2020-12-22 08:40:56,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:40:56,539 INFO L481 AbstractCegarLoop]: Abstraction has 484 states and 636 transitions. [2020-12-22 08:40:56,539 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:40:56,539 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 636 transitions. [2020-12-22 08:40:56,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 08:40:56,540 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:40:56,540 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:40:56,540 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 08:40:56,540 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:40:56,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:40:56,541 INFO L82 PathProgramCache]: Analyzing trace with hash 2058619373, now seen corresponding path program 1 times [2020-12-22 08:40:56,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:40:56,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029264227] [2020-12-22 08:40:56,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:40:56,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:40:56,766 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 08:40:56,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029264227] [2020-12-22 08:40:56,767 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:40:56,767 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 08:40:56,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705890140] [2020-12-22 08:40:56,768 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 08:40:56,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:40:56,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 08:40:56,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-12-22 08:40:56,768 INFO L87 Difference]: Start difference. First operand 484 states and 636 transitions. Second operand 11 states. [2020-12-22 08:41:00,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:41:00,362 INFO L93 Difference]: Finished difference Result 3495 states and 5028 transitions. [2020-12-22 08:41:00,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-12-22 08:41:00,363 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 66 [2020-12-22 08:41:00,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:41:00,378 INFO L225 Difference]: With dead ends: 3495 [2020-12-22 08:41:00,378 INFO L226 Difference]: Without dead ends: 3268 [2020-12-22 08:41:00,380 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 449 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=374, Invalid=1186, Unknown=0, NotChecked=0, Total=1560 [2020-12-22 08:41:00,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3268 states. [2020-12-22 08:41:00,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3268 to 489. [2020-12-22 08:41:00,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 489 states. [2020-12-22 08:41:00,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 641 transitions. [2020-12-22 08:41:00,499 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 641 transitions. Word has length 66 [2020-12-22 08:41:00,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:41:00,499 INFO L481 AbstractCegarLoop]: Abstraction has 489 states and 641 transitions. [2020-12-22 08:41:00,500 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 08:41:00,500 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 641 transitions. [2020-12-22 08:41:00,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 08:41:00,501 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:41:00,501 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:41:00,501 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 08:41:00,501 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:41:00,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:41:00,502 INFO L82 PathProgramCache]: Analyzing trace with hash 817551922, now seen corresponding path program 1 times [2020-12-22 08:41:00,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:41:00,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594987920] [2020-12-22 08:41:00,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:41:00,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:41:01,485 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 08:41:01,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594987920] [2020-12-22 08:41:01,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:41:01,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2020-12-22 08:41:01,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178159728] [2020-12-22 08:41:01,486 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-12-22 08:41:01,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:41:01,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-12-22 08:41:01,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=481, Unknown=0, NotChecked=0, Total=552 [2020-12-22 08:41:01,487 INFO L87 Difference]: Start difference. First operand 489 states and 641 transitions. Second operand 24 states. [2020-12-22 08:41:01,779 WARN L197 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 89 [2020-12-22 08:41:02,402 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 40 [2020-12-22 08:41:02,553 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2020-12-22 08:41:02,703 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 40 [2020-12-22 08:41:02,965 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2020-12-22 08:41:03,198 WARN L197 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 64 [2020-12-22 08:41:03,470 WARN L197 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 70 [2020-12-22 08:41:03,688 WARN L197 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-12-22 08:41:03,894 WARN L197 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-12-22 08:41:07,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:41:07,673 INFO L93 Difference]: Finished difference Result 1513 states and 2111 transitions. [2020-12-22 08:41:07,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-12-22 08:41:07,673 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 67 [2020-12-22 08:41:07,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:41:07,680 INFO L225 Difference]: With dead ends: 1513 [2020-12-22 08:41:07,680 INFO L226 Difference]: Without dead ends: 1297 [2020-12-22 08:41:07,681 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=378, Invalid=1784, Unknown=0, NotChecked=0, Total=2162 [2020-12-22 08:41:07,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1297 states. [2020-12-22 08:41:07,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1297 to 488. [2020-12-22 08:41:07,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 488 states. [2020-12-22 08:41:07,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 638 transitions. [2020-12-22 08:41:07,796 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 638 transitions. Word has length 67 [2020-12-22 08:41:07,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:41:07,797 INFO L481 AbstractCegarLoop]: Abstraction has 488 states and 638 transitions. [2020-12-22 08:41:07,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-12-22 08:41:07,797 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 638 transitions. [2020-12-22 08:41:07,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 08:41:07,798 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:41:07,798 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:41:07,798 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 08:41:07,798 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:41:07,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:41:07,799 INFO L82 PathProgramCache]: Analyzing trace with hash 2033916662, now seen corresponding path program 1 times [2020-12-22 08:41:07,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:41:07,799 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666133355] [2020-12-22 08:41:07,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:41:07,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:41:07,926 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 08:41:07,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666133355] [2020-12-22 08:41:07,927 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:41:07,927 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:41:07,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344982381] [2020-12-22 08:41:07,928 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:41:07,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:41:07,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:41:07,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:41:07,929 INFO L87 Difference]: Start difference. First operand 488 states and 638 transitions. Second operand 9 states. [2020-12-22 08:41:09,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:41:09,019 INFO L93 Difference]: Finished difference Result 1289 states and 1813 transitions. [2020-12-22 08:41:09,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-22 08:41:09,019 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 67 [2020-12-22 08:41:09,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:41:09,024 INFO L225 Difference]: With dead ends: 1289 [2020-12-22 08:41:09,024 INFO L226 Difference]: Without dead ends: 1029 [2020-12-22 08:41:09,026 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=133, Invalid=373, Unknown=0, NotChecked=0, Total=506 [2020-12-22 08:41:09,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1029 states. [2020-12-22 08:41:09,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1029 to 488. [2020-12-22 08:41:09,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 488 states. [2020-12-22 08:41:09,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 637 transitions. [2020-12-22 08:41:09,152 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 637 transitions. Word has length 67 [2020-12-22 08:41:09,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:41:09,152 INFO L481 AbstractCegarLoop]: Abstraction has 488 states and 637 transitions. [2020-12-22 08:41:09,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:41:09,152 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 637 transitions. [2020-12-22 08:41:09,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 08:41:09,153 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:41:09,153 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:41:09,154 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 08:41:09,154 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:41:09,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:41:09,155 INFO L82 PathProgramCache]: Analyzing trace with hash 167509874, now seen corresponding path program 1 times [2020-12-22 08:41:09,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:41:09,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283441980] [2020-12-22 08:41:09,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:41:09,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:41:10,173 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 08:41:10,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283441980] [2020-12-22 08:41:10,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:41:10,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2020-12-22 08:41:10,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333789566] [2020-12-22 08:41:10,175 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-12-22 08:41:10,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:41:10,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-12-22 08:41:10,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=530, Unknown=0, NotChecked=0, Total=600 [2020-12-22 08:41:10,176 INFO L87 Difference]: Start difference. First operand 488 states and 637 transitions. Second operand 25 states. [2020-12-22 08:41:10,535 WARN L197 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 100 [2020-12-22 08:41:11,029 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 38 [2020-12-22 08:41:11,188 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 39 [2020-12-22 08:41:11,602 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2020-12-22 08:41:11,835 WARN L197 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2020-12-22 08:41:12,117 WARN L197 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 74 [2020-12-22 08:41:12,324 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2020-12-22 08:41:12,515 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2020-12-22 08:41:12,729 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2020-12-22 08:41:12,997 WARN L197 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2020-12-22 08:41:13,204 WARN L197 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2020-12-22 08:41:14,527 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2020-12-22 08:41:17,881 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2020-12-22 08:41:19,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:41:19,155 INFO L93 Difference]: Finished difference Result 3161 states and 4598 transitions. [2020-12-22 08:41:19,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-12-22 08:41:19,155 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 67 [2020-12-22 08:41:19,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:41:19,167 INFO L225 Difference]: With dead ends: 3161 [2020-12-22 08:41:19,167 INFO L226 Difference]: Without dead ends: 2952 [2020-12-22 08:41:19,169 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=455, Invalid=1995, Unknown=0, NotChecked=0, Total=2450 [2020-12-22 08:41:19,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2952 states. [2020-12-22 08:41:19,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2952 to 494. [2020-12-22 08:41:19,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 494 states. [2020-12-22 08:41:19,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 646 transitions. [2020-12-22 08:41:19,325 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 646 transitions. Word has length 67 [2020-12-22 08:41:19,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:41:19,325 INFO L481 AbstractCegarLoop]: Abstraction has 494 states and 646 transitions. [2020-12-22 08:41:19,325 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-12-22 08:41:19,325 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 646 transitions. [2020-12-22 08:41:19,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 08:41:19,326 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:41:19,327 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:41:19,327 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 08:41:19,327 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:41:19,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:41:19,328 INFO L82 PathProgramCache]: Analyzing trace with hash 620991698, now seen corresponding path program 1 times [2020-12-22 08:41:19,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:41:19,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542829916] [2020-12-22 08:41:19,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:41:19,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:41:20,442 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 08:41:20,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542829916] [2020-12-22 08:41:20,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:41:20,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2020-12-22 08:41:20,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610776748] [2020-12-22 08:41:20,443 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-12-22 08:41:20,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:41:20,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-12-22 08:41:20,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2020-12-22 08:41:20,455 INFO L87 Difference]: Start difference. First operand 494 states and 646 transitions. Second operand 25 states. [2020-12-22 08:41:20,921 WARN L197 SmtUtils]: Spent 429.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 110 [2020-12-22 08:41:21,493 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 34 [2020-12-22 08:41:21,695 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 41 [2020-12-22 08:41:21,885 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 42 [2020-12-22 08:41:22,072 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 40 [2020-12-22 08:41:22,399 WARN L197 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2020-12-22 08:41:22,688 WARN L197 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2020-12-22 08:41:23,036 WARN L197 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 81 [2020-12-22 08:41:23,298 WARN L197 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2020-12-22 08:41:23,546 WARN L197 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2020-12-22 08:41:23,827 WARN L197 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2020-12-22 08:41:24,162 WARN L197 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 63 [2020-12-22 08:41:24,403 WARN L197 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2020-12-22 08:41:24,681 WARN L197 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2020-12-22 08:41:24,969 WARN L197 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2020-12-22 08:41:25,231 WARN L197 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2020-12-22 08:41:25,470 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 42 [2020-12-22 08:41:25,931 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 42 [2020-12-22 08:41:26,406 WARN L197 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 50 [2020-12-22 08:41:26,576 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 38 [2020-12-22 08:41:28,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:41:28,611 INFO L93 Difference]: Finished difference Result 1284 states and 1774 transitions. [2020-12-22 08:41:28,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-12-22 08:41:28,611 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 67 [2020-12-22 08:41:28,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:41:28,615 INFO L225 Difference]: With dead ends: 1284 [2020-12-22 08:41:28,615 INFO L226 Difference]: Without dead ends: 1075 [2020-12-22 08:41:28,617 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=490, Invalid=1862, Unknown=0, NotChecked=0, Total=2352 [2020-12-22 08:41:28,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1075 states. [2020-12-22 08:41:28,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1075 to 501. [2020-12-22 08:41:28,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 501 states. [2020-12-22 08:41:28,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 654 transitions. [2020-12-22 08:41:28,762 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 654 transitions. Word has length 67 [2020-12-22 08:41:28,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:41:28,763 INFO L481 AbstractCegarLoop]: Abstraction has 501 states and 654 transitions. [2020-12-22 08:41:28,763 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-12-22 08:41:28,763 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 654 transitions. [2020-12-22 08:41:28,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 08:41:28,765 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:41:28,765 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:41:28,765 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 08:41:28,765 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:41:28,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:41:28,766 INFO L82 PathProgramCache]: Analyzing trace with hash 1282574002, now seen corresponding path program 1 times [2020-12-22 08:41:28,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:41:28,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941677254] [2020-12-22 08:41:28,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:41:28,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:41:29,853 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 08:41:29,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941677254] [2020-12-22 08:41:29,854 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:41:29,854 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2020-12-22 08:41:29,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454724489] [2020-12-22 08:41:29,854 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-12-22 08:41:29,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:41:29,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-12-22 08:41:29,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=545, Unknown=0, NotChecked=0, Total=600 [2020-12-22 08:41:29,856 INFO L87 Difference]: Start difference. First operand 501 states and 654 transitions. Second operand 25 states. [2020-12-22 08:41:30,351 WARN L197 SmtUtils]: Spent 456.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 120 [2020-12-22 08:41:31,100 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 38 [2020-12-22 08:41:31,312 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2020-12-22 08:41:31,527 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2020-12-22 08:41:31,916 WARN L197 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2020-12-22 08:41:32,243 WARN L197 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 78 [2020-12-22 08:41:32,629 WARN L197 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 93 [2020-12-22 08:41:32,929 WARN L197 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2020-12-22 08:41:33,224 WARN L197 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2020-12-22 08:41:33,535 WARN L197 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2020-12-22 08:41:33,898 WARN L197 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 67 [2020-12-22 08:41:34,172 WARN L197 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2020-12-22 08:41:34,621 WARN L197 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2020-12-22 08:41:34,937 WARN L197 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 63 [2020-12-22 08:41:35,242 WARN L197 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2020-12-22 08:41:35,493 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2020-12-22 08:41:35,733 WARN L197 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2020-12-22 08:41:35,996 WARN L197 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2020-12-22 08:41:36,327 WARN L197 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2020-12-22 08:41:39,104 WARN L197 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 43 [2020-12-22 08:41:40,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:41:40,231 INFO L93 Difference]: Finished difference Result 2390 states and 3423 transitions. [2020-12-22 08:41:40,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-12-22 08:41:40,232 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 67 [2020-12-22 08:41:40,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:41:40,241 INFO L225 Difference]: With dead ends: 2390 [2020-12-22 08:41:40,241 INFO L226 Difference]: Without dead ends: 2178 [2020-12-22 08:41:40,242 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 401 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=571, Invalid=2291, Unknown=0, NotChecked=0, Total=2862 [2020-12-22 08:41:40,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2178 states. [2020-12-22 08:41:40,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2178 to 497. [2020-12-22 08:41:40,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 497 states. [2020-12-22 08:41:40,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 649 transitions. [2020-12-22 08:41:40,379 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 649 transitions. Word has length 67 [2020-12-22 08:41:40,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:41:40,379 INFO L481 AbstractCegarLoop]: Abstraction has 497 states and 649 transitions. [2020-12-22 08:41:40,379 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-12-22 08:41:40,379 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 649 transitions. [2020-12-22 08:41:40,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 08:41:40,380 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:41:40,380 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:41:40,380 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 08:41:40,381 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:41:40,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:41:40,381 INFO L82 PathProgramCache]: Analyzing trace with hash 1545068373, now seen corresponding path program 1 times [2020-12-22 08:41:40,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:41:40,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804075027] [2020-12-22 08:41:40,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:41:40,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:41:41,437 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 08:41:41,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804075027] [2020-12-22 08:41:41,438 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:41:41,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-12-22 08:41:41,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679059951] [2020-12-22 08:41:41,438 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-22 08:41:41,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:41:41,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-22 08:41:41,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2020-12-22 08:41:41,439 INFO L87 Difference]: Start difference. First operand 497 states and 649 transitions. Second operand 18 states. [2020-12-22 08:41:41,596 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 33 [2020-12-22 08:41:41,917 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 31 [2020-12-22 08:41:42,167 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 36 [2020-12-22 08:41:42,384 WARN L197 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 43 [2020-12-22 08:41:42,676 WARN L197 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2020-12-22 08:41:42,940 WARN L197 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2020-12-22 08:41:43,263 WARN L197 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 51 [2020-12-22 08:41:43,482 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 38 [2020-12-22 08:41:43,728 WARN L197 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 49 [2020-12-22 08:41:44,063 WARN L197 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2020-12-22 08:41:44,349 WARN L197 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 42 [2020-12-22 08:41:44,695 WARN L197 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 39 [2020-12-22 08:41:46,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:41:46,787 INFO L93 Difference]: Finished difference Result 1965 states and 2774 transitions. [2020-12-22 08:41:46,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-12-22 08:41:46,788 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 67 [2020-12-22 08:41:46,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:41:46,796 INFO L225 Difference]: With dead ends: 1965 [2020-12-22 08:41:46,797 INFO L226 Difference]: Without dead ends: 1757 [2020-12-22 08:41:46,798 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=241, Invalid=815, Unknown=0, NotChecked=0, Total=1056 [2020-12-22 08:41:46,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1757 states. [2020-12-22 08:41:46,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1757 to 497. [2020-12-22 08:41:46,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 497 states. [2020-12-22 08:41:46,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 648 transitions. [2020-12-22 08:41:46,952 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 648 transitions. Word has length 67 [2020-12-22 08:41:46,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:41:46,953 INFO L481 AbstractCegarLoop]: Abstraction has 497 states and 648 transitions. [2020-12-22 08:41:46,953 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-12-22 08:41:46,953 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 648 transitions. [2020-12-22 08:41:46,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 08:41:46,954 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:41:46,954 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:41:46,954 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 08:41:46,954 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:41:46,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:41:46,955 INFO L82 PathProgramCache]: Analyzing trace with hash 1785735868, now seen corresponding path program 1 times [2020-12-22 08:41:46,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:41:46,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128997311] [2020-12-22 08:41:46,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:41:46,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:41:47,088 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 08:41:47,088 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128997311] [2020-12-22 08:41:47,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:41:47,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:41:47,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629942046] [2020-12-22 08:41:47,089 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:41:47,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:41:47,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:41:47,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:41:47,090 INFO L87 Difference]: Start difference. First operand 497 states and 648 transitions. Second operand 9 states. [2020-12-22 08:41:48,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:41:48,670 INFO L93 Difference]: Finished difference Result 1485 states and 2078 transitions. [2020-12-22 08:41:48,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 08:41:48,671 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 67 [2020-12-22 08:41:48,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:41:48,675 INFO L225 Difference]: With dead ends: 1485 [2020-12-22 08:41:48,675 INFO L226 Difference]: Without dead ends: 1258 [2020-12-22 08:41:48,677 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2020-12-22 08:41:48,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1258 states. [2020-12-22 08:41:48,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1258 to 497. [2020-12-22 08:41:48,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 497 states. [2020-12-22 08:41:48,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 647 transitions. [2020-12-22 08:41:48,850 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 647 transitions. Word has length 67 [2020-12-22 08:41:48,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:41:48,851 INFO L481 AbstractCegarLoop]: Abstraction has 497 states and 647 transitions. [2020-12-22 08:41:48,851 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:41:48,851 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 647 transitions. [2020-12-22 08:41:48,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 08:41:48,852 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:41:48,852 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:41:48,852 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 08:41:48,852 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:41:48,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:41:48,853 INFO L82 PathProgramCache]: Analyzing trace with hash 1968382194, now seen corresponding path program 1 times [2020-12-22 08:41:48,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:41:48,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008951831] [2020-12-22 08:41:48,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:41:48,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:41:49,592 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 08:41:49,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008951831] [2020-12-22 08:41:49,593 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:41:49,593 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2020-12-22 08:41:49,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388017442] [2020-12-22 08:41:49,593 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-12-22 08:41:49,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:41:49,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-12-22 08:41:49,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=362, Unknown=0, NotChecked=0, Total=420 [2020-12-22 08:41:49,594 INFO L87 Difference]: Start difference. First operand 497 states and 647 transitions. Second operand 21 states. [2020-12-22 08:41:49,807 WARN L197 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 69 [2020-12-22 08:41:50,724 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2020-12-22 08:41:50,907 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2020-12-22 08:41:51,112 WARN L197 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 58 [2020-12-22 08:41:51,299 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 45 [2020-12-22 08:41:51,476 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 45 [2020-12-22 08:41:55,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:41:55,443 INFO L93 Difference]: Finished difference Result 1521 states and 2117 transitions. [2020-12-22 08:41:55,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-12-22 08:41:55,446 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 68 [2020-12-22 08:41:55,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:41:55,451 INFO L225 Difference]: With dead ends: 1521 [2020-12-22 08:41:55,451 INFO L226 Difference]: Without dead ends: 1300 [2020-12-22 08:41:55,453 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=257, Invalid=1225, Unknown=0, NotChecked=0, Total=1482 [2020-12-22 08:41:55,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1300 states. [2020-12-22 08:41:55,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1300 to 508. [2020-12-22 08:41:55,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 508 states. [2020-12-22 08:41:55,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 662 transitions. [2020-12-22 08:41:55,585 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 662 transitions. Word has length 68 [2020-12-22 08:41:55,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:41:55,585 INFO L481 AbstractCegarLoop]: Abstraction has 508 states and 662 transitions. [2020-12-22 08:41:55,585 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-12-22 08:41:55,585 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 662 transitions. [2020-12-22 08:41:55,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 08:41:55,586 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:41:55,587 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:41:55,587 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 08:41:55,587 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:41:55,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:41:55,588 INFO L82 PathProgramCache]: Analyzing trace with hash 1424994738, now seen corresponding path program 1 times [2020-12-22 08:41:55,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:41:55,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789010526] [2020-12-22 08:41:55,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:41:55,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:41:56,359 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 08:41:56,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789010526] [2020-12-22 08:41:56,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:41:56,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2020-12-22 08:41:56,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818370563] [2020-12-22 08:41:56,360 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-12-22 08:41:56,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:41:56,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-12-22 08:41:56,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2020-12-22 08:41:56,361 INFO L87 Difference]: Start difference. First operand 508 states and 662 transitions. Second operand 21 states. [2020-12-22 08:41:56,655 WARN L197 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 63 [2020-12-22 08:41:57,230 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 29 [2020-12-22 08:41:57,383 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 30 [2020-12-22 08:41:57,688 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 37 [2020-12-22 08:41:57,941 WARN L197 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 46 [2020-12-22 08:41:58,236 WARN L197 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 50 [2020-12-22 08:41:58,455 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 44 [2020-12-22 08:41:58,656 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 44 [2020-12-22 08:42:02,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:42:02,760 INFO L93 Difference]: Finished difference Result 1220 states and 1655 transitions. [2020-12-22 08:42:02,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-12-22 08:42:02,761 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 68 [2020-12-22 08:42:02,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:42:02,763 INFO L225 Difference]: With dead ends: 1220 [2020-12-22 08:42:02,763 INFO L226 Difference]: Without dead ends: 1207 [2020-12-22 08:42:02,764 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=245, Invalid=1237, Unknown=0, NotChecked=0, Total=1482 [2020-12-22 08:42:02,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1207 states. [2020-12-22 08:42:02,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1207 to 515. [2020-12-22 08:42:02,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 515 states. [2020-12-22 08:42:02,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 670 transitions. [2020-12-22 08:42:02,915 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 670 transitions. Word has length 68 [2020-12-22 08:42:02,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:42:02,915 INFO L481 AbstractCegarLoop]: Abstraction has 515 states and 670 transitions. [2020-12-22 08:42:02,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-12-22 08:42:02,915 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 670 transitions. [2020-12-22 08:42:02,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 08:42:02,916 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:42:02,916 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:42:02,916 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-22 08:42:02,916 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:42:02,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:42:02,917 INFO L82 PathProgramCache]: Analyzing trace with hash -30360855, now seen corresponding path program 1 times [2020-12-22 08:42:02,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:42:02,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397653803] [2020-12-22 08:42:02,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:42:02,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:42:03,386 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 31 [2020-12-22 08:42:03,755 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 08:42:03,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397653803] [2020-12-22 08:42:03,756 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:42:03,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-12-22 08:42:03,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559666357] [2020-12-22 08:42:03,756 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-22 08:42:03,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:42:03,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-22 08:42:03,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-12-22 08:42:03,758 INFO L87 Difference]: Start difference. First operand 515 states and 670 transitions. Second operand 16 states. [2020-12-22 08:42:04,543 WARN L197 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2020-12-22 08:42:04,730 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 42 [2020-12-22 08:42:04,897 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 42 [2020-12-22 08:42:05,109 WARN L197 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2020-12-22 08:42:06,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:42:06,610 INFO L93 Difference]: Finished difference Result 1372 states and 1898 transitions. [2020-12-22 08:42:06,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-22 08:42:06,612 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 68 [2020-12-22 08:42:06,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:42:06,614 INFO L225 Difference]: With dead ends: 1372 [2020-12-22 08:42:06,614 INFO L226 Difference]: Without dead ends: 1128 [2020-12-22 08:42:06,615 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=164, Invalid=538, Unknown=0, NotChecked=0, Total=702 [2020-12-22 08:42:06,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1128 states. [2020-12-22 08:42:06,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1128 to 506. [2020-12-22 08:42:06,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 506 states. [2020-12-22 08:42:06,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 656 transitions. [2020-12-22 08:42:06,791 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 656 transitions. Word has length 68 [2020-12-22 08:42:06,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:42:06,791 INFO L481 AbstractCegarLoop]: Abstraction has 506 states and 656 transitions. [2020-12-22 08:42:06,791 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-22 08:42:06,791 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 656 transitions. [2020-12-22 08:42:06,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 08:42:06,792 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:42:06,793 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:42:06,793 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-22 08:42:06,793 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:42:06,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:42:06,794 INFO L82 PathProgramCache]: Analyzing trace with hash -1763841774, now seen corresponding path program 1 times [2020-12-22 08:42:06,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:42:06,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777252341] [2020-12-22 08:42:06,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:42:06,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:42:07,857 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 08:42:07,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777252341] [2020-12-22 08:42:07,857 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:42:07,857 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2020-12-22 08:42:07,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349349767] [2020-12-22 08:42:07,858 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-12-22 08:42:07,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:42:07,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-12-22 08:42:07,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=455, Unknown=0, NotChecked=0, Total=506 [2020-12-22 08:42:07,858 INFO L87 Difference]: Start difference. First operand 506 states and 656 transitions. Second operand 23 states. [2020-12-22 08:42:08,270 WARN L197 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 84 [2020-12-22 08:42:08,785 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 32 [2020-12-22 08:42:08,964 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 33 [2020-12-22 08:42:09,162 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 34 [2020-12-22 08:42:09,547 WARN L197 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 53 [2020-12-22 08:42:09,855 WARN L197 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 61 [2020-12-22 08:42:10,218 WARN L197 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 66 [2020-12-22 08:42:10,504 WARN L197 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 51 [2020-12-22 08:42:10,768 WARN L197 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 51 [2020-12-22 08:42:11,052 WARN L197 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 48 [2020-12-22 08:42:11,352 WARN L197 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2020-12-22 08:42:11,606 WARN L197 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 46 [2020-12-22 08:42:15,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:42:15,929 INFO L93 Difference]: Finished difference Result 1415 states and 1953 transitions. [2020-12-22 08:42:15,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-12-22 08:42:15,931 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 68 [2020-12-22 08:42:15,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:42:15,933 INFO L225 Difference]: With dead ends: 1415 [2020-12-22 08:42:15,933 INFO L226 Difference]: Without dead ends: 1194 [2020-12-22 08:42:15,934 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=310, Invalid=1330, Unknown=0, NotChecked=0, Total=1640 [2020-12-22 08:42:15,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2020-12-22 08:42:16,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 513. [2020-12-22 08:42:16,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 513 states. [2020-12-22 08:42:16,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 664 transitions. [2020-12-22 08:42:16,100 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 664 transitions. Word has length 68 [2020-12-22 08:42:16,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:42:16,100 INFO L481 AbstractCegarLoop]: Abstraction has 513 states and 664 transitions. [2020-12-22 08:42:16,100 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-12-22 08:42:16,100 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 664 transitions. [2020-12-22 08:42:16,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 08:42:16,101 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:42:16,102 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:42:16,102 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-22 08:42:16,102 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:42:16,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:42:16,102 INFO L82 PathProgramCache]: Analyzing trace with hash -338444654, now seen corresponding path program 1 times [2020-12-22 08:42:16,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:42:16,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005044007] [2020-12-22 08:42:16,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:42:16,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:42:17,231 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 08:42:17,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005044007] [2020-12-22 08:42:17,232 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:42:17,232 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2020-12-22 08:42:17,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809870448] [2020-12-22 08:42:17,232 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-12-22 08:42:17,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:42:17,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-12-22 08:42:17,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=495, Unknown=0, NotChecked=0, Total=552 [2020-12-22 08:42:17,233 INFO L87 Difference]: Start difference. First operand 513 states and 664 transitions. Second operand 24 states. [2020-12-22 08:42:17,653 WARN L197 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 92 [2020-12-22 08:42:18,164 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2020-12-22 08:42:18,352 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 36 [2020-12-22 08:42:18,533 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 35 [2020-12-22 08:42:18,914 WARN L197 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2020-12-22 08:42:19,222 WARN L197 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2020-12-22 08:42:19,585 WARN L197 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2020-12-22 08:42:19,865 WARN L197 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2020-12-22 08:42:20,117 WARN L197 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2020-12-22 08:42:20,387 WARN L197 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2020-12-22 08:42:20,687 WARN L197 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2020-12-22 08:42:20,919 WARN L197 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2020-12-22 08:42:21,996 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2020-12-22 08:42:22,378 WARN L197 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2020-12-22 08:42:25,755 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 40 [2020-12-22 08:42:27,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:42:27,578 INFO L93 Difference]: Finished difference Result 2328 states and 3342 transitions. [2020-12-22 08:42:27,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-12-22 08:42:27,579 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 68 [2020-12-22 08:42:27,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:42:27,582 INFO L225 Difference]: With dead ends: 2328 [2020-12-22 08:42:27,583 INFO L226 Difference]: Without dead ends: 2113 [2020-12-22 08:42:27,584 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 343 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=388, Invalid=1774, Unknown=0, NotChecked=0, Total=2162 [2020-12-22 08:42:27,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2113 states. [2020-12-22 08:42:27,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2113 to 513. [2020-12-22 08:42:27,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 513 states. [2020-12-22 08:42:27,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 663 transitions. [2020-12-22 08:42:27,754 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 663 transitions. Word has length 68 [2020-12-22 08:42:27,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:42:27,755 INFO L481 AbstractCegarLoop]: Abstraction has 513 states and 663 transitions. [2020-12-22 08:42:27,755 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-12-22 08:42:27,755 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 663 transitions. [2020-12-22 08:42:27,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 08:42:27,756 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:42:27,756 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:42:27,756 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-12-22 08:42:27,756 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:42:27,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:42:27,757 INFO L82 PathProgramCache]: Analyzing trace with hash 552362002, now seen corresponding path program 1 times [2020-12-22 08:42:27,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:42:27,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654068928] [2020-12-22 08:42:27,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:42:27,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:42:28,825 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 08:42:28,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654068928] [2020-12-22 08:42:28,826 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:42:28,826 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2020-12-22 08:42:28,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86509849] [2020-12-22 08:42:28,826 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-12-22 08:42:28,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:42:28,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-12-22 08:42:28,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=447, Unknown=0, NotChecked=0, Total=506 [2020-12-22 08:42:28,827 INFO L87 Difference]: Start difference. First operand 513 states and 663 transitions. Second operand 23 states. [2020-12-22 08:42:29,212 WARN L197 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 80 [2020-12-22 08:42:29,733 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2020-12-22 08:42:29,931 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 36 [2020-12-22 08:42:30,124 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2020-12-22 08:42:30,479 WARN L197 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-12-22 08:42:30,741 WARN L197 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2020-12-22 08:42:31,039 WARN L197 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2020-12-22 08:42:31,308 WARN L197 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2020-12-22 08:42:31,569 WARN L197 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2020-12-22 08:42:31,852 WARN L197 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-12-22 08:42:32,150 WARN L197 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2020-12-22 08:42:32,387 WARN L197 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-12-22 08:42:32,664 WARN L197 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2020-12-22 08:42:32,972 WARN L197 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2020-12-22 08:42:33,258 WARN L197 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-12-22 08:42:36,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:42:36,937 INFO L93 Difference]: Finished difference Result 1288 states and 1775 transitions. [2020-12-22 08:42:36,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-12-22 08:42:36,939 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 68 [2020-12-22 08:42:36,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:42:36,946 INFO L225 Difference]: With dead ends: 1288 [2020-12-22 08:42:36,946 INFO L226 Difference]: Without dead ends: 1281 [2020-12-22 08:42:36,947 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=366, Invalid=1356, Unknown=0, NotChecked=0, Total=1722 [2020-12-22 08:42:36,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2020-12-22 08:42:37,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 513. [2020-12-22 08:42:37,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 513 states. [2020-12-22 08:42:37,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 662 transitions. [2020-12-22 08:42:37,154 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 662 transitions. Word has length 68 [2020-12-22 08:42:37,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:42:37,154 INFO L481 AbstractCegarLoop]: Abstraction has 513 states and 662 transitions. [2020-12-22 08:42:37,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-12-22 08:42:37,155 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 662 transitions. [2020-12-22 08:42:37,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 08:42:37,156 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:42:37,156 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:42:37,156 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-12-22 08:42:37,156 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:42:37,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:42:37,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1767976765, now seen corresponding path program 1 times [2020-12-22 08:42:37,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:42:37,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952787310] [2020-12-22 08:42:37,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:42:37,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:42:38,123 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 08:42:38,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952787310] [2020-12-22 08:42:38,123 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:42:38,123 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-12-22 08:42:38,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686417583] [2020-12-22 08:42:38,124 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-22 08:42:38,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:42:38,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-22 08:42:38,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2020-12-22 08:42:38,125 INFO L87 Difference]: Start difference. First operand 513 states and 662 transitions. Second operand 17 states. [2020-12-22 08:42:38,271 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 31 [2020-12-22 08:42:38,602 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2020-12-22 08:42:38,832 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2020-12-22 08:42:39,026 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 36 [2020-12-22 08:42:39,252 WARN L197 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 46 [2020-12-22 08:42:39,468 WARN L197 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2020-12-22 08:42:39,765 WARN L197 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2020-12-22 08:42:40,157 WARN L197 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 47 [2020-12-22 08:42:40,779 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 39 [2020-12-22 08:42:41,222 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 36 [2020-12-22 08:42:42,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:42:42,920 INFO L93 Difference]: Finished difference Result 1335 states and 1815 transitions. [2020-12-22 08:42:42,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-22 08:42:42,921 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 68 [2020-12-22 08:42:42,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:42:42,923 INFO L225 Difference]: With dead ends: 1335 [2020-12-22 08:42:42,923 INFO L226 Difference]: Without dead ends: 1126 [2020-12-22 08:42:42,924 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=213, Invalid=717, Unknown=0, NotChecked=0, Total=930 [2020-12-22 08:42:42,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1126 states. [2020-12-22 08:42:43,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1126 to 511. [2020-12-22 08:42:43,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 511 states. [2020-12-22 08:42:43,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 659 transitions. [2020-12-22 08:42:43,108 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 659 transitions. Word has length 68 [2020-12-22 08:42:43,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:42:43,109 INFO L481 AbstractCegarLoop]: Abstraction has 511 states and 659 transitions. [2020-12-22 08:42:43,109 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-22 08:42:43,109 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 659 transitions. [2020-12-22 08:42:43,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 08:42:43,109 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:42:43,110 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:42:43,110 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-12-22 08:42:43,110 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:42:43,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:42:43,110 INFO L82 PathProgramCache]: Analyzing trace with hash 391891831, now seen corresponding path program 1 times [2020-12-22 08:42:43,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:42:43,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399806549] [2020-12-22 08:42:43,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:42:43,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:42:43,697 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 08:42:43,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399806549] [2020-12-22 08:42:43,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:42:43,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-12-22 08:42:43,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387275262] [2020-12-22 08:42:43,698 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 08:42:43,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:42:43,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 08:42:43,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-12-22 08:42:43,698 INFO L87 Difference]: Start difference. First operand 511 states and 659 transitions. Second operand 11 states. [2020-12-22 08:42:43,845 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 30 [2020-12-22 08:42:44,330 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 32 [2020-12-22 08:42:44,560 WARN L197 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2020-12-22 08:42:44,776 WARN L197 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2020-12-22 08:42:44,945 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2020-12-22 08:42:45,109 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 35 [2020-12-22 08:42:45,335 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 34 [2020-12-22 08:42:45,559 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 26 [2020-12-22 08:42:45,826 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 29 [2020-12-22 08:42:46,017 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 30 [2020-12-22 08:42:46,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:42:46,991 INFO L93 Difference]: Finished difference Result 1653 states and 2345 transitions. [2020-12-22 08:42:46,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-22 08:42:46,993 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 68 [2020-12-22 08:42:46,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:42:46,995 INFO L225 Difference]: With dead ends: 1653 [2020-12-22 08:42:46,995 INFO L226 Difference]: Without dead ends: 1347 [2020-12-22 08:42:46,996 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=172, Invalid=428, Unknown=0, NotChecked=0, Total=600 [2020-12-22 08:42:46,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1347 states. [2020-12-22 08:42:47,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1347 to 413. [2020-12-22 08:42:47,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 413 states. [2020-12-22 08:42:47,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 546 transitions. [2020-12-22 08:42:47,143 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 546 transitions. Word has length 68 [2020-12-22 08:42:47,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:42:47,143 INFO L481 AbstractCegarLoop]: Abstraction has 413 states and 546 transitions. [2020-12-22 08:42:47,143 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 08:42:47,144 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 546 transitions. [2020-12-22 08:42:47,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 08:42:47,144 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:42:47,144 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:42:47,145 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-12-22 08:42:47,145 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:42:47,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:42:47,145 INFO L82 PathProgramCache]: Analyzing trace with hash -1394723840, now seen corresponding path program 1 times [2020-12-22 08:42:47,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:42:47,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086468667] [2020-12-22 08:42:47,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:42:47,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:42:47,721 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 08:42:47,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086468667] [2020-12-22 08:42:47,722 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:42:47,722 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-12-22 08:42:47,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457093964] [2020-12-22 08:42:47,722 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 08:42:47,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:42:47,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 08:42:47,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-12-22 08:42:47,723 INFO L87 Difference]: Start difference. First operand 413 states and 546 transitions. Second operand 12 states. [2020-12-22 08:42:48,317 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 30 [2020-12-22 08:42:48,470 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 30 [2020-12-22 08:42:48,720 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 26 [2020-12-22 08:42:48,928 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 24 [2020-12-22 08:42:50,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:42:50,001 INFO L93 Difference]: Finished difference Result 1408 states and 1979 transitions. [2020-12-22 08:42:50,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-22 08:42:50,003 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 69 [2020-12-22 08:42:50,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:42:50,005 INFO L225 Difference]: With dead ends: 1408 [2020-12-22 08:42:50,005 INFO L226 Difference]: Without dead ends: 1173 [2020-12-22 08:42:50,006 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2020-12-22 08:42:50,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1173 states. [2020-12-22 08:42:50,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1173 to 379. [2020-12-22 08:42:50,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2020-12-22 08:42:50,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 500 transitions. [2020-12-22 08:42:50,186 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 500 transitions. Word has length 69 [2020-12-22 08:42:50,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:42:50,186 INFO L481 AbstractCegarLoop]: Abstraction has 379 states and 500 transitions. [2020-12-22 08:42:50,186 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-22 08:42:50,186 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 500 transitions. [2020-12-22 08:42:50,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 08:42:50,187 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:42:50,187 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:42:50,187 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-12-22 08:42:50,188 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:42:50,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:42:50,188 INFO L82 PathProgramCache]: Analyzing trace with hash 308538022, now seen corresponding path program 1 times [2020-12-22 08:42:50,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:42:50,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899605142] [2020-12-22 08:42:50,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:42:50,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:42:51,186 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 08:42:51,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899605142] [2020-12-22 08:42:51,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:42:51,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-12-22 08:42:51,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022531470] [2020-12-22 08:42:51,187 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-22 08:42:51,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:42:51,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-22 08:42:51,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2020-12-22 08:42:51,194 INFO L87 Difference]: Start difference. First operand 379 states and 500 transitions. Second operand 16 states. [2020-12-22 08:42:51,375 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 30 [2020-12-22 08:42:51,598 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 30 [2020-12-22 08:42:51,745 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 31 [2020-12-22 08:42:51,917 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 33 [2020-12-22 08:42:52,115 WARN L197 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 35 [2020-12-22 08:42:52,304 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2020-12-22 08:42:52,617 WARN L197 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 46 [2020-12-22 08:42:52,897 WARN L197 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 46 [2020-12-22 08:42:53,155 WARN L197 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 46 [2020-12-22 08:42:54,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:42:54,869 INFO L93 Difference]: Finished difference Result 863 states and 1201 transitions. [2020-12-22 08:42:54,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-22 08:42:54,871 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 69 [2020-12-22 08:42:54,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:42:54,873 INFO L225 Difference]: With dead ends: 863 [2020-12-22 08:42:54,873 INFO L226 Difference]: Without dead ends: 821 [2020-12-22 08:42:54,874 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=190, Invalid=680, Unknown=0, NotChecked=0, Total=870 [2020-12-22 08:42:54,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 821 states. [2020-12-22 08:42:55,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 821 to 337. [2020-12-22 08:42:55,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-12-22 08:42:55,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 454 transitions. [2020-12-22 08:42:55,023 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 454 transitions. Word has length 69 [2020-12-22 08:42:55,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:42:55,024 INFO L481 AbstractCegarLoop]: Abstraction has 337 states and 454 transitions. [2020-12-22 08:42:55,024 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-22 08:42:55,024 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 454 transitions. [2020-12-22 08:42:55,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-22 08:42:55,024 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:42:55,024 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:42:55,024 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-12-22 08:42:55,025 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:42:55,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:42:55,025 INFO L82 PathProgramCache]: Analyzing trace with hash -957086542, now seen corresponding path program 1 times [2020-12-22 08:42:55,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:42:55,025 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784065893] [2020-12-22 08:42:55,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:42:55,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:42:55,315 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 08:42:55,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784065893] [2020-12-22 08:42:55,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:42:55,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 08:42:55,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830866144] [2020-12-22 08:42:55,316 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 08:42:55,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:42:55,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 08:42:55,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-12-22 08:42:55,318 INFO L87 Difference]: Start difference. First operand 337 states and 454 transitions. Second operand 11 states. [2020-12-22 08:42:55,951 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2020-12-22 08:42:59,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:42:59,940 INFO L93 Difference]: Finished difference Result 2759 states and 3991 transitions. [2020-12-22 08:42:59,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-12-22 08:42:59,942 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 70 [2020-12-22 08:42:59,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:42:59,948 INFO L225 Difference]: With dead ends: 2759 [2020-12-22 08:42:59,948 INFO L226 Difference]: Without dead ends: 2501 [2020-12-22 08:42:59,951 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=249, Invalid=743, Unknown=0, NotChecked=0, Total=992 [2020-12-22 08:42:59,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2501 states. [2020-12-22 08:43:00,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2501 to 347. [2020-12-22 08:43:00,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347 states. [2020-12-22 08:43:00,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 464 transitions. [2020-12-22 08:43:00,167 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 464 transitions. Word has length 70 [2020-12-22 08:43:00,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:43:00,168 INFO L481 AbstractCegarLoop]: Abstraction has 347 states and 464 transitions. [2020-12-22 08:43:00,168 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 08:43:00,168 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 464 transitions. [2020-12-22 08:43:00,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-22 08:43:00,168 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:43:00,169 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:43:00,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-12-22 08:43:00,169 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:43:00,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:43:00,170 INFO L82 PathProgramCache]: Analyzing trace with hash 1208388672, now seen corresponding path program 1 times [2020-12-22 08:43:00,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:43:00,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742318448] [2020-12-22 08:43:00,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:43:00,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:43:00,347 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 08:43:00,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742318448] [2020-12-22 08:43:00,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:43:00,348 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:43:00,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293150050] [2020-12-22 08:43:00,348 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:43:00,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:43:00,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:43:00,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:43:00,349 INFO L87 Difference]: Start difference. First operand 347 states and 464 transitions. Second operand 9 states. [2020-12-22 08:43:01,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:43:01,567 INFO L93 Difference]: Finished difference Result 877 states and 1216 transitions. [2020-12-22 08:43:01,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 08:43:01,568 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 71 [2020-12-22 08:43:01,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:43:01,570 INFO L225 Difference]: With dead ends: 877 [2020-12-22 08:43:01,570 INFO L226 Difference]: Without dead ends: 619 [2020-12-22 08:43:01,571 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2020-12-22 08:43:01,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2020-12-22 08:43:01,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 337. [2020-12-22 08:43:01,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-12-22 08:43:01,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 452 transitions. [2020-12-22 08:43:01,729 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 452 transitions. Word has length 71 [2020-12-22 08:43:01,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:43:01,730 INFO L481 AbstractCegarLoop]: Abstraction has 337 states and 452 transitions. [2020-12-22 08:43:01,730 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:43:01,730 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 452 transitions. [2020-12-22 08:43:01,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-22 08:43:01,730 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:43:01,731 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:43:01,731 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-12-22 08:43:01,731 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:43:01,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:43:01,731 INFO L82 PathProgramCache]: Analyzing trace with hash -918116841, now seen corresponding path program 1 times [2020-12-22 08:43:01,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:43:01,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746961926] [2020-12-22 08:43:01,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:43:01,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:43:02,709 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 08:43:02,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746961926] [2020-12-22 08:43:02,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:43:02,710 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2020-12-22 08:43:02,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910877949] [2020-12-22 08:43:02,710 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-12-22 08:43:02,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:43:02,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-12-22 08:43:02,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=370, Unknown=0, NotChecked=0, Total=420 [2020-12-22 08:43:02,711 INFO L87 Difference]: Start difference. First operand 337 states and 452 transitions. Second operand 21 states. [2020-12-22 08:43:03,094 WARN L197 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2020-12-22 08:43:03,459 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 22 [2020-12-22 08:43:03,642 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 28 [2020-12-22 08:43:03,832 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 29 [2020-12-22 08:43:04,022 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 30 [2020-12-22 08:43:04,420 WARN L197 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2020-12-22 08:43:04,729 WARN L197 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 52 [2020-12-22 08:43:05,094 WARN L197 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2020-12-22 08:43:05,364 WARN L197 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 44 [2020-12-22 08:43:05,612 WARN L197 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 44 [2020-12-22 08:43:09,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:43:09,169 INFO L93 Difference]: Finished difference Result 1209 states and 1747 transitions. [2020-12-22 08:43:09,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-12-22 08:43:09,171 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 72 [2020-12-22 08:43:09,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:43:09,173 INFO L225 Difference]: With dead ends: 1209 [2020-12-22 08:43:09,173 INFO L226 Difference]: Without dead ends: 987 [2020-12-22 08:43:09,174 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=250, Invalid=1310, Unknown=0, NotChecked=0, Total=1560 [2020-12-22 08:43:09,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 987 states. [2020-12-22 08:43:09,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 987 to 350. [2020-12-22 08:43:09,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 350 states. [2020-12-22 08:43:09,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 467 transitions. [2020-12-22 08:43:09,329 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 467 transitions. Word has length 72 [2020-12-22 08:43:09,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:43:09,329 INFO L481 AbstractCegarLoop]: Abstraction has 350 states and 467 transitions. [2020-12-22 08:43:09,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-12-22 08:43:09,329 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 467 transitions. [2020-12-22 08:43:09,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-22 08:43:09,329 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:43:09,330 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:43:09,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-12-22 08:43:09,330 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:43:09,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:43:09,330 INFO L82 PathProgramCache]: Analyzing trace with hash 370177890, now seen corresponding path program 1 times [2020-12-22 08:43:09,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:43:09,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24862293] [2020-12-22 08:43:09,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:43:09,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:43:09,553 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 23 [2020-12-22 08:43:09,668 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 25 [2020-12-22 08:43:10,072 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 08:43:10,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24862293] [2020-12-22 08:43:10,073 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:43:10,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-12-22 08:43:10,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842916091] [2020-12-22 08:43:10,073 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 08:43:10,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:43:10,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 08:43:10,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-12-22 08:43:10,074 INFO L87 Difference]: Start difference. First operand 350 states and 467 transitions. Second operand 12 states. [2020-12-22 08:43:12,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:43:12,401 INFO L93 Difference]: Finished difference Result 1464 states and 2112 transitions. [2020-12-22 08:43:12,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-22 08:43:12,403 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 73 [2020-12-22 08:43:12,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:43:12,406 INFO L225 Difference]: With dead ends: 1464 [2020-12-22 08:43:12,407 INFO L226 Difference]: Without dead ends: 1458 [2020-12-22 08:43:12,407 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2020-12-22 08:43:12,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1458 states. [2020-12-22 08:43:12,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1458 to 343. [2020-12-22 08:43:12,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2020-12-22 08:43:12,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 459 transitions. [2020-12-22 08:43:12,673 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 459 transitions. Word has length 73 [2020-12-22 08:43:12,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:43:12,673 INFO L481 AbstractCegarLoop]: Abstraction has 343 states and 459 transitions. [2020-12-22 08:43:12,673 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-22 08:43:12,673 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 459 transitions. [2020-12-22 08:43:12,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-12-22 08:43:12,674 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:43:12,674 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:43:12,674 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-12-22 08:43:12,674 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:43:12,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:43:12,675 INFO L82 PathProgramCache]: Analyzing trace with hash -1364481581, now seen corresponding path program 1 times [2020-12-22 08:43:12,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:43:12,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529600526] [2020-12-22 08:43:12,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:43:12,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:43:12,740 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 08:43:12,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529600526] [2020-12-22 08:43:12,741 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:43:12,741 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:43:12,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044464546] [2020-12-22 08:43:12,742 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:43:12,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:43:12,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:43:12,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:43:12,743 INFO L87 Difference]: Start difference. First operand 343 states and 459 transitions. Second operand 3 states. [2020-12-22 08:43:13,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:43:13,219 INFO L93 Difference]: Finished difference Result 743 states and 1053 transitions. [2020-12-22 08:43:13,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:43:13,220 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 96 [2020-12-22 08:43:13,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:43:13,221 INFO L225 Difference]: With dead ends: 743 [2020-12-22 08:43:13,221 INFO L226 Difference]: Without dead ends: 535 [2020-12-22 08:43:13,222 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:43:13,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2020-12-22 08:43:13,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 533. [2020-12-22 08:43:13,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 533 states. [2020-12-22 08:43:13,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 735 transitions. [2020-12-22 08:43:13,521 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 735 transitions. Word has length 96 [2020-12-22 08:43:13,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:43:13,521 INFO L481 AbstractCegarLoop]: Abstraction has 533 states and 735 transitions. [2020-12-22 08:43:13,522 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:43:13,522 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 735 transitions. [2020-12-22 08:43:13,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-22 08:43:13,524 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:43:13,524 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:43:13,524 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-12-22 08:43:13,524 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:43:13,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:43:13,525 INFO L82 PathProgramCache]: Analyzing trace with hash -1426852022, now seen corresponding path program 1 times [2020-12-22 08:43:13,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:43:13,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612454399] [2020-12-22 08:43:13,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:43:13,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:43:13,596 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 08:43:13,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612454399] [2020-12-22 08:43:13,597 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:43:13,597 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:43:13,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135152126] [2020-12-22 08:43:13,597 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:43:13,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:43:13,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:43:13,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:43:13,598 INFO L87 Difference]: Start difference. First operand 533 states and 735 transitions. Second operand 5 states. [2020-12-22 08:43:15,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:43:15,483 INFO L93 Difference]: Finished difference Result 2437 states and 3531 transitions. [2020-12-22 08:43:15,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 08:43:15,485 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2020-12-22 08:43:15,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:43:15,490 INFO L225 Difference]: With dead ends: 2437 [2020-12-22 08:43:15,490 INFO L226 Difference]: Without dead ends: 2039 [2020-12-22 08:43:15,492 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 08:43:15,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2039 states. [2020-12-22 08:43:16,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2039 to 969. [2020-12-22 08:43:16,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 969 states. [2020-12-22 08:43:16,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 969 states to 969 states and 1363 transitions. [2020-12-22 08:43:16,178 INFO L78 Accepts]: Start accepts. Automaton has 969 states and 1363 transitions. Word has length 98 [2020-12-22 08:43:16,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:43:16,179 INFO L481 AbstractCegarLoop]: Abstraction has 969 states and 1363 transitions. [2020-12-22 08:43:16,179 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:43:16,179 INFO L276 IsEmpty]: Start isEmpty. Operand 969 states and 1363 transitions. [2020-12-22 08:43:16,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-22 08:43:16,180 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:43:16,181 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:43:16,181 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-12-22 08:43:16,181 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:43:16,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:43:16,181 INFO L82 PathProgramCache]: Analyzing trace with hash 645902315, now seen corresponding path program 1 times [2020-12-22 08:43:16,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:43:16,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761559488] [2020-12-22 08:43:16,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:43:16,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:43:16,274 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 08:43:16,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761559488] [2020-12-22 08:43:16,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:43:16,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:43:16,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697562095] [2020-12-22 08:43:16,277 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:43:16,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:43:16,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:43:16,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:43:16,278 INFO L87 Difference]: Start difference. First operand 969 states and 1363 transitions. Second operand 3 states. [2020-12-22 08:43:17,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:43:17,421 INFO L93 Difference]: Finished difference Result 2237 states and 3217 transitions. [2020-12-22 08:43:17,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:43:17,423 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 98 [2020-12-22 08:43:17,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:43:17,427 INFO L225 Difference]: With dead ends: 2237 [2020-12-22 08:43:17,427 INFO L226 Difference]: Without dead ends: 1403 [2020-12-22 08:43:17,428 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:43:17,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1403 states. [2020-12-22 08:43:18,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1403 to 1401. [2020-12-22 08:43:18,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1401 states. [2020-12-22 08:43:18,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1401 states to 1401 states and 1983 transitions. [2020-12-22 08:43:18,495 INFO L78 Accepts]: Start accepts. Automaton has 1401 states and 1983 transitions. Word has length 98 [2020-12-22 08:43:18,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:43:18,496 INFO L481 AbstractCegarLoop]: Abstraction has 1401 states and 1983 transitions. [2020-12-22 08:43:18,496 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:43:18,496 INFO L276 IsEmpty]: Start isEmpty. Operand 1401 states and 1983 transitions. [2020-12-22 08:43:18,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-22 08:43:18,497 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:43:18,497 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:43:18,497 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-12-22 08:43:18,498 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:43:18,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:43:18,498 INFO L82 PathProgramCache]: Analyzing trace with hash 579408803, now seen corresponding path program 1 times [2020-12-22 08:43:18,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:43:18,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119524642] [2020-12-22 08:43:18,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:43:18,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:43:18,558 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 08:43:18,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119524642] [2020-12-22 08:43:18,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:43:18,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:43:18,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384953240] [2020-12-22 08:43:18,559 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:43:18,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:43:18,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:43:18,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:43:18,560 INFO L87 Difference]: Start difference. First operand 1401 states and 1983 transitions. Second operand 3 states. [2020-12-22 08:43:20,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:43:20,223 INFO L93 Difference]: Finished difference Result 3309 states and 4719 transitions. [2020-12-22 08:43:20,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:43:20,225 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 98 [2020-12-22 08:43:20,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:43:20,228 INFO L225 Difference]: With dead ends: 3309 [2020-12-22 08:43:20,228 INFO L226 Difference]: Without dead ends: 2043 [2020-12-22 08:43:20,230 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:43:20,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2043 states. [2020-12-22 08:43:21,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2043 to 2041. [2020-12-22 08:43:21,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2041 states. [2020-12-22 08:43:21,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2041 states to 2041 states and 2857 transitions. [2020-12-22 08:43:21,625 INFO L78 Accepts]: Start accepts. Automaton has 2041 states and 2857 transitions. Word has length 98 [2020-12-22 08:43:21,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:43:21,625 INFO L481 AbstractCegarLoop]: Abstraction has 2041 states and 2857 transitions. [2020-12-22 08:43:21,625 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:43:21,625 INFO L276 IsEmpty]: Start isEmpty. Operand 2041 states and 2857 transitions. [2020-12-22 08:43:21,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-22 08:43:21,627 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:43:21,627 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:43:21,627 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-12-22 08:43:21,627 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:43:21,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:43:21,628 INFO L82 PathProgramCache]: Analyzing trace with hash 628880202, now seen corresponding path program 1 times [2020-12-22 08:43:21,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:43:21,628 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787398289] [2020-12-22 08:43:21,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:43:21,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:43:21,699 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 08:43:21,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787398289] [2020-12-22 08:43:21,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:43:21,700 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:43:21,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674519487] [2020-12-22 08:43:21,701 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:43:21,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:43:21,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:43:21,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:43:21,702 INFO L87 Difference]: Start difference. First operand 2041 states and 2857 transitions. Second operand 5 states. [2020-12-22 08:43:27,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:43:27,798 INFO L93 Difference]: Finished difference Result 9593 states and 13485 transitions. [2020-12-22 08:43:27,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 08:43:27,800 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2020-12-22 08:43:27,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:43:27,807 INFO L225 Difference]: With dead ends: 9593 [2020-12-22 08:43:27,807 INFO L226 Difference]: Without dead ends: 7687 [2020-12-22 08:43:27,810 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 08:43:27,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7687 states. [2020-12-22 08:43:30,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7687 to 4089. [2020-12-22 08:43:30,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4089 states. [2020-12-22 08:43:30,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4089 states to 4089 states and 5711 transitions. [2020-12-22 08:43:30,710 INFO L78 Accepts]: Start accepts. Automaton has 4089 states and 5711 transitions. Word has length 98 [2020-12-22 08:43:30,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:43:30,711 INFO L481 AbstractCegarLoop]: Abstraction has 4089 states and 5711 transitions. [2020-12-22 08:43:30,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:43:30,711 INFO L276 IsEmpty]: Start isEmpty. Operand 4089 states and 5711 transitions. [2020-12-22 08:43:30,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-22 08:43:30,712 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:43:30,713 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:43:30,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-12-22 08:43:30,713 INFO L429 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:43:30,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:43:30,713 INFO L82 PathProgramCache]: Analyzing trace with hash -1790937782, now seen corresponding path program 1 times [2020-12-22 08:43:30,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:43:30,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861261750] [2020-12-22 08:43:30,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:43:30,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:43:30,796 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 08:43:30,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861261750] [2020-12-22 08:43:30,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:43:30,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:43:30,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896806655] [2020-12-22 08:43:30,797 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:43:30,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:43:30,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:43:30,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:43:30,798 INFO L87 Difference]: Start difference. First operand 4089 states and 5711 transitions. Second operand 5 states. [2020-12-22 08:43:40,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:43:40,467 INFO L93 Difference]: Finished difference Result 17213 states and 24099 transitions. [2020-12-22 08:43:40,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 08:43:40,469 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2020-12-22 08:43:40,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:43:40,480 INFO L225 Difference]: With dead ends: 17213 [2020-12-22 08:43:40,481 INFO L226 Difference]: Without dead ends: 13259 [2020-12-22 08:43:40,485 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 08:43:40,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13259 states. [2020-12-22 08:43:46,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13259 to 8329. [2020-12-22 08:43:46,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8329 states. [2020-12-22 08:43:46,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8329 states to 8329 states and 11563 transitions. [2020-12-22 08:43:46,108 INFO L78 Accepts]: Start accepts. Automaton has 8329 states and 11563 transitions. Word has length 98 [2020-12-22 08:43:46,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:43:46,109 INFO L481 AbstractCegarLoop]: Abstraction has 8329 states and 11563 transitions. [2020-12-22 08:43:46,109 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:43:46,109 INFO L276 IsEmpty]: Start isEmpty. Operand 8329 states and 11563 transitions. [2020-12-22 08:43:46,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-22 08:43:46,111 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:43:46,111 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:43:46,111 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-12-22 08:43:46,111 INFO L429 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:43:46,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:43:46,112 INFO L82 PathProgramCache]: Analyzing trace with hash -686393014, now seen corresponding path program 1 times [2020-12-22 08:43:46,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:43:46,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743250662] [2020-12-22 08:43:46,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:43:46,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:43:46,187 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 08:43:46,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743250662] [2020-12-22 08:43:46,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:43:46,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:43:46,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396662449] [2020-12-22 08:43:46,188 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:43:46,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:43:46,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:43:46,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:43:46,189 INFO L87 Difference]: Start difference. First operand 8329 states and 11563 transitions. Second operand 5 states. [2020-12-22 08:43:58,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:43:58,930 INFO L93 Difference]: Finished difference Result 26113 states and 35951 transitions. [2020-12-22 08:43:58,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 08:43:58,931 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2020-12-22 08:43:58,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:43:58,949 INFO L225 Difference]: With dead ends: 26113 [2020-12-22 08:43:58,949 INFO L226 Difference]: Without dead ends: 17919 [2020-12-22 08:43:58,957 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 08:43:58,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17919 states. [2020-12-22 08:44:06,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17919 to 10337. [2020-12-22 08:44:06,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10337 states. [2020-12-22 08:44:06,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10337 states to 10337 states and 14059 transitions. [2020-12-22 08:44:06,264 INFO L78 Accepts]: Start accepts. Automaton has 10337 states and 14059 transitions. Word has length 98 [2020-12-22 08:44:06,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:44:06,264 INFO L481 AbstractCegarLoop]: Abstraction has 10337 states and 14059 transitions. [2020-12-22 08:44:06,265 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:44:06,265 INFO L276 IsEmpty]: Start isEmpty. Operand 10337 states and 14059 transitions. [2020-12-22 08:44:06,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-12-22 08:44:06,266 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:44:06,266 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:44:06,266 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-12-22 08:44:06,267 INFO L429 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:44:06,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:44:06,267 INFO L82 PathProgramCache]: Analyzing trace with hash -1897778033, now seen corresponding path program 1 times [2020-12-22 08:44:06,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:44:06,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96015872] [2020-12-22 08:44:06,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:44:06,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:44:06,320 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 08:44:06,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96015872] [2020-12-22 08:44:06,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:44:06,321 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:44:06,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806647573] [2020-12-22 08:44:06,321 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:44:06,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:44:06,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:44:06,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:44:06,322 INFO L87 Difference]: Start difference. First operand 10337 states and 14059 transitions. Second operand 3 states. [2020-12-22 08:44:13,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:44:13,223 INFO L93 Difference]: Finished difference Result 20157 states and 27397 transitions. [2020-12-22 08:44:13,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:44:13,224 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 99 [2020-12-22 08:44:13,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:44:13,233 INFO L225 Difference]: With dead ends: 20157 [2020-12-22 08:44:13,233 INFO L226 Difference]: Without dead ends: 9955 [2020-12-22 08:44:13,241 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:44:13,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9955 states. [2020-12-22 08:44:19,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9955 to 9105. [2020-12-22 08:44:19,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9105 states. [2020-12-22 08:44:19,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9105 states to 9105 states and 12299 transitions. [2020-12-22 08:44:19,570 INFO L78 Accepts]: Start accepts. Automaton has 9105 states and 12299 transitions. Word has length 99 [2020-12-22 08:44:19,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:44:19,571 INFO L481 AbstractCegarLoop]: Abstraction has 9105 states and 12299 transitions. [2020-12-22 08:44:19,571 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:44:19,571 INFO L276 IsEmpty]: Start isEmpty. Operand 9105 states and 12299 transitions. [2020-12-22 08:44:19,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-12-22 08:44:19,572 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:44:19,573 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:44:19,573 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-12-22 08:44:19,573 INFO L429 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:44:19,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:44:19,573 INFO L82 PathProgramCache]: Analyzing trace with hash 642959826, now seen corresponding path program 1 times [2020-12-22 08:44:19,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:44:19,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591229191] [2020-12-22 08:44:19,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:44:19,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:44:19,626 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 08:44:19,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591229191] [2020-12-22 08:44:19,626 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:44:19,627 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:44:19,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322468994] [2020-12-22 08:44:19,627 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:44:19,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:44:19,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:44:19,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:44:19,628 INFO L87 Difference]: Start difference. First operand 9105 states and 12299 transitions. Second operand 3 states. [2020-12-22 08:44:25,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:44:25,589 INFO L93 Difference]: Finished difference Result 17533 states and 23621 transitions. [2020-12-22 08:44:25,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:44:25,590 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 100 [2020-12-22 08:44:25,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:44:25,601 INFO L225 Difference]: With dead ends: 17533 [2020-12-22 08:44:25,601 INFO L226 Difference]: Without dead ends: 8563 [2020-12-22 08:44:25,609 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:44:25,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8563 states. [2020-12-22 08:44:31,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8563 to 8341. [2020-12-22 08:44:31,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8341 states. [2020-12-22 08:44:31,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8341 states to 8341 states and 11115 transitions. [2020-12-22 08:44:31,434 INFO L78 Accepts]: Start accepts. Automaton has 8341 states and 11115 transitions. Word has length 100 [2020-12-22 08:44:31,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:44:31,434 INFO L481 AbstractCegarLoop]: Abstraction has 8341 states and 11115 transitions. [2020-12-22 08:44:31,435 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:44:31,435 INFO L276 IsEmpty]: Start isEmpty. Operand 8341 states and 11115 transitions. [2020-12-22 08:44:31,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-12-22 08:44:31,435 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:44:31,436 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:44:31,436 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-12-22 08:44:31,436 INFO L429 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:44:31,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:44:31,436 INFO L82 PathProgramCache]: Analyzing trace with hash -563977445, now seen corresponding path program 1 times [2020-12-22 08:44:31,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:44:31,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554836824] [2020-12-22 08:44:31,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:44:31,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:44:31,489 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 08:44:31,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554836824] [2020-12-22 08:44:31,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:44:31,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:44:31,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074986968] [2020-12-22 08:44:31,491 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:44:31,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:44:31,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:44:31,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:44:31,492 INFO L87 Difference]: Start difference. First operand 8341 states and 11115 transitions. Second operand 3 states. [2020-12-22 08:44:37,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:44:37,027 INFO L93 Difference]: Finished difference Result 16009 states and 21257 transitions. [2020-12-22 08:44:37,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:44:37,029 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 101 [2020-12-22 08:44:37,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:44:37,037 INFO L225 Difference]: With dead ends: 16009 [2020-12-22 08:44:37,037 INFO L226 Difference]: Without dead ends: 7803 [2020-12-22 08:44:37,044 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:44:37,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7803 states.