/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.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 08:43:42,234 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 08:43:42,239 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 08:43:42,299 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 08:43:42,300 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 08:43:42,304 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 08:43:42,308 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 08:43:42,316 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 08:43:42,320 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 08:43:42,327 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 08:43:42,328 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 08:43:42,330 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 08:43:42,331 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 08:43:42,334 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 08:43:42,336 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 08:43:42,339 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 08:43:42,340 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 08:43:42,344 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 08:43:42,353 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 08:43:42,370 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 08:43:42,372 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 08:43:42,374 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 08:43:42,376 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 08:43:42,378 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 08:43:42,393 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 08:43:42,396 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 08:43:42,397 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 08:43:42,399 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 08:43:42,400 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 08:43:42,401 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 08:43:42,404 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 08:43:42,405 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 08:43:42,410 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 08:43:42,414 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 08:43:42,416 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 08:43:42,418 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 08:43:42,419 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 08:43:42,419 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 08:43:42,420 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 08:43:42,421 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 08:43:42,421 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 08:43:42,423 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 08:43:42,478 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 08:43:42,478 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 08:43:42,483 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 08:43:42,483 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 08:43:42,483 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 08:43:42,484 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 08:43:42,484 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 08:43:42,484 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 08:43:42,485 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 08:43:42,485 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 08:43:42,486 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 08:43:42,487 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 08:43:42,487 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 08:43:42,487 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 08:43:42,487 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 08:43:42,488 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 08:43:42,488 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 08:43:42,488 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:43:42,488 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 08:43:42,489 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 08:43:42,489 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 08:43:42,489 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 08:43:42,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 08:43:42,490 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 08:43:42,490 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 08:43:42,490 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 08:43:42,955 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 08:43:42,987 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 08:43:42,990 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 08:43:42,992 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 08:43:42,993 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 08:43:42,994 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-12-22 08:43:43,081 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d969eaec1/3b3fe963cbfc441eb81dbcc4a053fe93/FLAG13fef4ede [2020-12-22 08:43:43,954 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 08:43:43,955 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-12-22 08:43:43,974 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d969eaec1/3b3fe963cbfc441eb81dbcc4a053fe93/FLAG13fef4ede [2020-12-22 08:43:44,118 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d969eaec1/3b3fe963cbfc441eb81dbcc4a053fe93 [2020-12-22 08:43:44,121 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 08:43:44,124 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 08:43:44,125 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 08:43:44,125 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 08:43:44,129 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 08:43:44,130 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:43:44" (1/1) ... [2020-12-22 08:43:44,132 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4977a62a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:43:44, skipping insertion in model container [2020-12-22 08:43:44,132 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:43:44" (1/1) ... [2020-12-22 08:43:44,140 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 08:43:44,202 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 08:43:44,471 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.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[8487,8500] [2020-12-22 08:43:44,512 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.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[11739,11752] [2020-12-22 08:43:44,532 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.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[12895,12908] [2020-12-22 08:43:44,541 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.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[13551,13564] [2020-12-22 08:43:44,568 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.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[15030,15043] [2020-12-22 08:43:44,575 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.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[15686,15699] [2020-12-22 08:43:44,594 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.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[16670,16683] [2020-12-22 08:43:44,611 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.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[18966,18979] [2020-12-22 08:43:44,616 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.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[19625,19638] [2020-12-22 08:43:44,622 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.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[20607,20620] [2020-12-22 08:43:44,633 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.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[22398,22411] [2020-12-22 08:43:44,731 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:43:44,747 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 08:43:44,841 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.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[8487,8500] [2020-12-22 08:43:44,855 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.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[11739,11752] [2020-12-22 08:43:44,863 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.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[12895,12908] [2020-12-22 08:43:44,867 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.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[13551,13564] [2020-12-22 08:43:44,876 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.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[15030,15043] [2020-12-22 08:43:44,880 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.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[15686,15699] [2020-12-22 08:43:44,887 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.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[16670,16683] [2020-12-22 08:43:44,902 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.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[18966,18979] [2020-12-22 08:43:44,910 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.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[19625,19638] [2020-12-22 08:43:44,924 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.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[20607,20620] [2020-12-22 08:43:44,942 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.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[22398,22411] [2020-12-22 08:43:45,043 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:43:45,066 INFO L208 MainTranslator]: Completed translation [2020-12-22 08:43:45,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:43:45 WrapperNode [2020-12-22 08:43:45,067 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 08:43:45,069 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 08:43:45,069 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 08:43:45,069 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 08:43:45,103 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:43:45" (1/1) ... [2020-12-22 08:43:45,159 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:43:45" (1/1) ... [2020-12-22 08:43:45,239 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 08:43:45,240 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 08:43:45,240 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 08:43:45,241 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 08:43:45,256 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:43:45" (1/1) ... [2020-12-22 08:43:45,257 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:43:45" (1/1) ... [2020-12-22 08:43:45,270 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:43:45" (1/1) ... [2020-12-22 08:43:45,271 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:43:45" (1/1) ... [2020-12-22 08:43:45,322 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:43:45" (1/1) ... [2020-12-22 08:43:45,354 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:43:45" (1/1) ... [2020-12-22 08:43:45,369 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:43:45" (1/1) ... [2020-12-22 08:43:45,381 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 08:43:45,382 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 08:43:45,383 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 08:43:45,383 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 08:43:45,384 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:43:45" (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 08:43:45,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 08:43:45,489 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 08:43:45,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 08:43:45,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 08:43:47,900 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 08:43:47,901 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 08:43:47,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:43:47 BoogieIcfgContainer [2020-12-22 08:43:47,903 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 08:43:47,905 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 08:43:47,905 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 08:43:47,909 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 08:43:47,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 08:43:44" (1/3) ... [2020-12-22 08:43:47,910 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c3137d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:43:47, skipping insertion in model container [2020-12-22 08:43:47,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:43:45" (2/3) ... [2020-12-22 08:43:47,911 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c3137d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:43:47, skipping insertion in model container [2020-12-22 08:43:47,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:43:47" (3/3) ... [2020-12-22 08:43:47,912 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-12-22 08:43:47,919 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 08:43:47,925 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2020-12-22 08:43:47,945 INFO L253 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2020-12-22 08:43:47,977 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 08:43:47,977 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 08:43:47,978 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 08:43:47,978 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 08:43:47,978 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 08:43:47,978 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 08:43:47,978 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 08:43:47,978 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 08:43:48,004 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states. [2020-12-22 08:43:48,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-12-22 08:43:48,019 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:43:48,020 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] [2020-12-22 08:43:48,021 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 08:43:48,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:43:48,027 INFO L82 PathProgramCache]: Analyzing trace with hash 1863160701, now seen corresponding path program 1 times [2020-12-22 08:43:48,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:43:48,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266787885] [2020-12-22 08:43:48,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:43:48,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:43:48,540 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 08:43:48,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266787885] [2020-12-22 08:43:48,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:43:48,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:43:48,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212823920] [2020-12-22 08:43:48,549 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:43:48,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:43:48,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:43:48,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:43:48,568 INFO L87 Difference]: Start difference. First operand 357 states. Second operand 5 states. [2020-12-22 08:43:49,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:43:49,164 INFO L93 Difference]: Finished difference Result 569 states and 972 transitions. [2020-12-22 08:43:49,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:43:49,166 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 58 [2020-12-22 08:43:49,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:43:49,182 INFO L225 Difference]: With dead ends: 569 [2020-12-22 08:43:49,183 INFO L226 Difference]: Without dead ends: 293 [2020-12-22 08:43:49,188 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 08:43:49,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-12-22 08:43:49,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293. [2020-12-22 08:43:49,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2020-12-22 08:43:49,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 367 transitions. [2020-12-22 08:43:49,298 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 367 transitions. Word has length 58 [2020-12-22 08:43:49,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:43:49,299 INFO L481 AbstractCegarLoop]: Abstraction has 293 states and 367 transitions. [2020-12-22 08:43:49,299 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:43:49,299 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 367 transitions. [2020-12-22 08:43:49,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-22 08:43:49,306 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:43:49,307 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] [2020-12-22 08:43:49,311 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 08:43:49,312 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 08:43:49,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:43:49,313 INFO L82 PathProgramCache]: Analyzing trace with hash -1094505509, now seen corresponding path program 1 times [2020-12-22 08:43:49,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:43:49,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800143512] [2020-12-22 08:43:49,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:43:49,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:43:49,643 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 08:43:49,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800143512] [2020-12-22 08:43:49,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:43:49,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:43:49,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14677966] [2020-12-22 08:43:49,646 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:43:49,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:43:49,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:43:49,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:43:49,648 INFO L87 Difference]: Start difference. First operand 293 states and 367 transitions. Second operand 6 states. [2020-12-22 08:43:50,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:43:50,251 INFO L93 Difference]: Finished difference Result 601 states and 765 transitions. [2020-12-22 08:43:50,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:43:50,253 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2020-12-22 08:43:50,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:43:50,259 INFO L225 Difference]: With dead ends: 601 [2020-12-22 08:43:50,260 INFO L226 Difference]: Without dead ends: 378 [2020-12-22 08:43:50,262 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:43:50,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2020-12-22 08:43:50,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 338. [2020-12-22 08:43:50,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 338 states. [2020-12-22 08:43:50,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 437 transitions. [2020-12-22 08:43:50,297 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 437 transitions. Word has length 59 [2020-12-22 08:43:50,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:43:50,298 INFO L481 AbstractCegarLoop]: Abstraction has 338 states and 437 transitions. [2020-12-22 08:43:50,298 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:43:50,298 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 437 transitions. [2020-12-22 08:43:50,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-22 08:43:50,300 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:43:50,300 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 08:43:50,301 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 08:43:50,301 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 08:43:50,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:43:50,302 INFO L82 PathProgramCache]: Analyzing trace with hash 568036411, now seen corresponding path program 1 times [2020-12-22 08:43:50,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:43:50,302 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908624998] [2020-12-22 08:43:50,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:43:50,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:43:50,415 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 08:43:50,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908624998] [2020-12-22 08:43:50,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:43:50,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:43:50,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043655025] [2020-12-22 08:43:50,417 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:43:50,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:43:50,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:43:50,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:43:50,419 INFO L87 Difference]: Start difference. First operand 338 states and 437 transitions. Second operand 5 states. [2020-12-22 08:43:50,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:43:50,871 INFO L93 Difference]: Finished difference Result 606 states and 801 transitions. [2020-12-22 08:43:50,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:43:50,872 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-12-22 08:43:50,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:43:50,874 INFO L225 Difference]: With dead ends: 606 [2020-12-22 08:43:50,875 INFO L226 Difference]: Without dead ends: 322 [2020-12-22 08:43:50,876 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 08:43:50,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2020-12-22 08:43:50,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 322. [2020-12-22 08:43:50,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 322 states. [2020-12-22 08:43:50,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 417 transitions. [2020-12-22 08:43:50,900 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 417 transitions. Word has length 60 [2020-12-22 08:43:50,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:43:50,900 INFO L481 AbstractCegarLoop]: Abstraction has 322 states and 417 transitions. [2020-12-22 08:43:50,901 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:43:50,901 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 417 transitions. [2020-12-22 08:43:50,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-22 08:43:50,903 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:43:50,903 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] [2020-12-22 08:43:50,903 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 08:43:50,903 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 08:43:50,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:43:50,904 INFO L82 PathProgramCache]: Analyzing trace with hash 1932821818, now seen corresponding path program 1 times [2020-12-22 08:43:50,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:43:50,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661336689] [2020-12-22 08:43:50,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:43:50,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:43:51,006 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 08:43:51,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661336689] [2020-12-22 08:43:51,007 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:43:51,007 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:43:51,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065327065] [2020-12-22 08:43:51,007 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:43:51,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:43:51,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:43:51,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:43:51,009 INFO L87 Difference]: Start difference. First operand 322 states and 417 transitions. Second operand 5 states. [2020-12-22 08:43:51,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:43:51,389 INFO L93 Difference]: Finished difference Result 590 states and 779 transitions. [2020-12-22 08:43:51,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:43:51,390 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 61 [2020-12-22 08:43:51,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:43:51,392 INFO L225 Difference]: With dead ends: 590 [2020-12-22 08:43:51,393 INFO L226 Difference]: Without dead ends: 311 [2020-12-22 08:43:51,394 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 08:43:51,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2020-12-22 08:43:51,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 311. [2020-12-22 08:43:51,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2020-12-22 08:43:51,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 403 transitions. [2020-12-22 08:43:51,418 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 403 transitions. Word has length 61 [2020-12-22 08:43:51,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:43:51,418 INFO L481 AbstractCegarLoop]: Abstraction has 311 states and 403 transitions. [2020-12-22 08:43:51,418 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:43:51,418 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 403 transitions. [2020-12-22 08:43:51,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-22 08:43:51,419 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:43:51,420 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 08:43:51,420 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 08:43:51,420 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 08:43:51,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:43:51,421 INFO L82 PathProgramCache]: Analyzing trace with hash 207205371, now seen corresponding path program 1 times [2020-12-22 08:43:51,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:43:51,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43503184] [2020-12-22 08:43:51,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:43:51,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:43:51,696 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 08:43:51,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43503184] [2020-12-22 08:43:51,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:43:51,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:43:51,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351052963] [2020-12-22 08:43:51,698 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:43:51,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:43:51,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:43:51,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:43:51,699 INFO L87 Difference]: Start difference. First operand 311 states and 403 transitions. Second operand 9 states. [2020-12-22 08:43:53,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:43:53,212 INFO L93 Difference]: Finished difference Result 864 states and 1193 transitions. [2020-12-22 08:43:53,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 08:43:53,213 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-12-22 08:43:53,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:43:53,218 INFO L225 Difference]: With dead ends: 864 [2020-12-22 08:43:53,218 INFO L226 Difference]: Without dead ends: 721 [2020-12-22 08:43:53,219 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2020-12-22 08:43:53,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2020-12-22 08:43:53,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 311. [2020-12-22 08:43:53,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2020-12-22 08:43:53,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 402 transitions. [2020-12-22 08:43:53,248 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 402 transitions. Word has length 62 [2020-12-22 08:43:53,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:43:53,249 INFO L481 AbstractCegarLoop]: Abstraction has 311 states and 402 transitions. [2020-12-22 08:43:53,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:43:53,249 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 402 transitions. [2020-12-22 08:43:53,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-22 08:43:53,250 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:43:53,250 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 08:43:53,250 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 08:43:53,251 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 08:43:53,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:43:53,251 INFO L82 PathProgramCache]: Analyzing trace with hash -201639857, now seen corresponding path program 1 times [2020-12-22 08:43:53,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:43:53,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490076377] [2020-12-22 08:43:53,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:43:53,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:43:53,528 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 08:43:53,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490076377] [2020-12-22 08:43:53,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:43:53,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:43:53,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334550510] [2020-12-22 08:43:53,530 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:43:53,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:43:53,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:43:53,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:43:53,533 INFO L87 Difference]: Start difference. First operand 311 states and 402 transitions. Second operand 9 states. [2020-12-22 08:43:55,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:43:55,071 INFO L93 Difference]: Finished difference Result 838 states and 1159 transitions. [2020-12-22 08:43:55,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 08:43:55,073 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-12-22 08:43:55,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:43:55,082 INFO L225 Difference]: With dead ends: 838 [2020-12-22 08:43:55,082 INFO L226 Difference]: Without dead ends: 721 [2020-12-22 08:43:55,084 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2020-12-22 08:43:55,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2020-12-22 08:43:55,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 311. [2020-12-22 08:43:55,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2020-12-22 08:43:55,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 401 transitions. [2020-12-22 08:43:55,119 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 401 transitions. Word has length 62 [2020-12-22 08:43:55,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:43:55,120 INFO L481 AbstractCegarLoop]: Abstraction has 311 states and 401 transitions. [2020-12-22 08:43:55,120 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:43:55,120 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 401 transitions. [2020-12-22 08:43:55,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-22 08:43:55,121 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:43:55,121 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 08:43:55,121 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 08:43:55,122 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 08:43:55,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:43:55,122 INFO L82 PathProgramCache]: Analyzing trace with hash 1938423665, now seen corresponding path program 1 times [2020-12-22 08:43:55,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:43:55,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372027647] [2020-12-22 08:43:55,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:43:55,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:43:55,328 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 08:43:55,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372027647] [2020-12-22 08:43:55,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:43:55,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:43:55,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416136980] [2020-12-22 08:43:55,330 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:43:55,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:43:55,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:43:55,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:43:55,331 INFO L87 Difference]: Start difference. First operand 311 states and 401 transitions. Second operand 9 states. [2020-12-22 08:43:56,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:43:56,693 INFO L93 Difference]: Finished difference Result 873 states and 1198 transitions. [2020-12-22 08:43:56,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 08:43:56,693 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-12-22 08:43:56,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:43:56,697 INFO L225 Difference]: With dead ends: 873 [2020-12-22 08:43:56,698 INFO L226 Difference]: Without dead ends: 721 [2020-12-22 08:43:56,699 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2020-12-22 08:43:56,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2020-12-22 08:43:56,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 311. [2020-12-22 08:43:56,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2020-12-22 08:43:56,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 400 transitions. [2020-12-22 08:43:56,728 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 400 transitions. Word has length 62 [2020-12-22 08:43:56,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:43:56,728 INFO L481 AbstractCegarLoop]: Abstraction has 311 states and 400 transitions. [2020-12-22 08:43:56,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:43:56,729 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 400 transitions. [2020-12-22 08:43:56,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-22 08:43:56,730 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:43:56,730 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 08:43:56,730 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 08:43:56,730 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 08:43:56,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:43:56,731 INFO L82 PathProgramCache]: Analyzing trace with hash -1233191565, now seen corresponding path program 1 times [2020-12-22 08:43:56,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:43:56,731 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696522016] [2020-12-22 08:43:56,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:43:56,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:43:56,958 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 08:43:56,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696522016] [2020-12-22 08:43:56,959 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:43:56,959 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 08:43:56,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044056859] [2020-12-22 08:43:56,959 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 08:43:56,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:43:56,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 08:43:56,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:43:56,961 INFO L87 Difference]: Start difference. First operand 311 states and 400 transitions. Second operand 8 states. [2020-12-22 08:43:57,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:43:57,740 INFO L93 Difference]: Finished difference Result 594 states and 771 transitions. [2020-12-22 08:43:57,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 08:43:57,741 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 62 [2020-12-22 08:43:57,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:43:57,743 INFO L225 Difference]: With dead ends: 594 [2020-12-22 08:43:57,744 INFO L226 Difference]: Without dead ends: 403 [2020-12-22 08:43:57,744 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2020-12-22 08:43:57,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2020-12-22 08:43:57,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 311. [2020-12-22 08:43:57,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2020-12-22 08:43:57,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 399 transitions. [2020-12-22 08:43:57,773 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 399 transitions. Word has length 62 [2020-12-22 08:43:57,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:43:57,773 INFO L481 AbstractCegarLoop]: Abstraction has 311 states and 399 transitions. [2020-12-22 08:43:57,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 08:43:57,773 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 399 transitions. [2020-12-22 08:43:57,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 08:43:57,774 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:43:57,775 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 08:43:57,775 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 08:43:57,775 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 08:43:57,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:43:57,776 INFO L82 PathProgramCache]: Analyzing trace with hash -2031197374, now seen corresponding path program 1 times [2020-12-22 08:43:57,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:43:57,776 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828957024] [2020-12-22 08:43:57,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:43:57,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:43:57,946 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 08:43:57,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828957024] [2020-12-22 08:43:57,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:43:57,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:43:57,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069060666] [2020-12-22 08:43:57,947 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:43:57,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:43:57,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:43:57,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:43:57,949 INFO L87 Difference]: Start difference. First operand 311 states and 399 transitions. Second operand 9 states. [2020-12-22 08:43:59,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:43:59,555 INFO L93 Difference]: Finished difference Result 819 states and 1126 transitions. [2020-12-22 08:43:59,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 08:43:59,556 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-12-22 08:43:59,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:43:59,560 INFO L225 Difference]: With dead ends: 819 [2020-12-22 08:43:59,560 INFO L226 Difference]: Without dead ends: 709 [2020-12-22 08:43:59,561 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2020-12-22 08:43:59,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2020-12-22 08:43:59,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 311. [2020-12-22 08:43:59,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2020-12-22 08:43:59,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 398 transitions. [2020-12-22 08:43:59,608 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 398 transitions. Word has length 64 [2020-12-22 08:43:59,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:43:59,608 INFO L481 AbstractCegarLoop]: Abstraction has 311 states and 398 transitions. [2020-12-22 08:43:59,609 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:43:59,609 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 398 transitions. [2020-12-22 08:43:59,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 08:43:59,610 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:43:59,610 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 08:43:59,610 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 08:43:59,610 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 08:43:59,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:43:59,611 INFO L82 PathProgramCache]: Analyzing trace with hash -119000272, now seen corresponding path program 1 times [2020-12-22 08:43:59,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:43:59,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603736162] [2020-12-22 08:43:59,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:43:59,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:43:59,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:43:59,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603736162] [2020-12-22 08:43:59,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:43:59,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 08:43:59,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996879382] [2020-12-22 08:43:59,901 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 08:43:59,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:43:59,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 08:43:59,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-12-22 08:43:59,902 INFO L87 Difference]: Start difference. First operand 311 states and 398 transitions. Second operand 11 states. [2020-12-22 08:44:00,032 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 27 [2020-12-22 08:44:00,315 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 31 [2020-12-22 08:44:00,624 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2020-12-22 08:44:01,944 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 34 [2020-12-22 08:44:02,212 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2020-12-22 08:44:05,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:44:05,541 INFO L93 Difference]: Finished difference Result 1860 states and 2646 transitions. [2020-12-22 08:44:05,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-12-22 08:44:05,542 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 64 [2020-12-22 08:44:05,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:44:05,549 INFO L225 Difference]: With dead ends: 1860 [2020-12-22 08:44:05,549 INFO L226 Difference]: Without dead ends: 1738 [2020-12-22 08:44:05,551 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 448 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=374, Invalid=1186, Unknown=0, NotChecked=0, Total=1560 [2020-12-22 08:44:05,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1738 states. [2020-12-22 08:44:05,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1738 to 315. [2020-12-22 08:44:05,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2020-12-22 08:44:05,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 402 transitions. [2020-12-22 08:44:05,603 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 402 transitions. Word has length 64 [2020-12-22 08:44:05,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:44:05,604 INFO L481 AbstractCegarLoop]: Abstraction has 315 states and 402 transitions. [2020-12-22 08:44:05,604 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 08:44:05,604 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 402 transitions. [2020-12-22 08:44:05,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 08:44:05,605 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:44:05,605 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 08:44:05,605 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 08:44:05,605 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 08:44:05,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:44:05,606 INFO L82 PathProgramCache]: Analyzing trace with hash -1520301075, now seen corresponding path program 1 times [2020-12-22 08:44:05,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:44:05,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347392252] [2020-12-22 08:44:05,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:44:05,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:44:05,798 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 08:44:05,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347392252] [2020-12-22 08:44:05,798 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:44:05,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:44:05,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26982632] [2020-12-22 08:44:05,800 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:44:05,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:44:05,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:44:05,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:44:05,801 INFO L87 Difference]: Start difference. First operand 315 states and 402 transitions. Second operand 9 states. [2020-12-22 08:44:07,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:44:07,609 INFO L93 Difference]: Finished difference Result 820 states and 1126 transitions. [2020-12-22 08:44:07,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 08:44:07,610 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-12-22 08:44:07,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:44:07,613 INFO L225 Difference]: With dead ends: 820 [2020-12-22 08:44:07,613 INFO L226 Difference]: Without dead ends: 713 [2020-12-22 08:44:07,614 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2020-12-22 08:44:07,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2020-12-22 08:44:07,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 315. [2020-12-22 08:44:07,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2020-12-22 08:44:07,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 401 transitions. [2020-12-22 08:44:07,679 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 401 transitions. Word has length 64 [2020-12-22 08:44:07,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:44:07,679 INFO L481 AbstractCegarLoop]: Abstraction has 315 states and 401 transitions. [2020-12-22 08:44:07,679 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:44:07,679 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 401 transitions. [2020-12-22 08:44:07,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 08:44:07,680 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:44:07,680 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 08:44:07,680 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 08:44:07,681 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 08:44:07,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:44:07,681 INFO L82 PathProgramCache]: Analyzing trace with hash 1508633347, now seen corresponding path program 1 times [2020-12-22 08:44:07,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:44:07,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827617019] [2020-12-22 08:44:07,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:44:07,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:44:07,998 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 08:44:07,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827617019] [2020-12-22 08:44:07,999 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:44:07,999 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 08:44:07,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315788174] [2020-12-22 08:44:08,000 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 08:44:08,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:44:08,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 08:44:08,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-12-22 08:44:08,001 INFO L87 Difference]: Start difference. First operand 315 states and 401 transitions. Second operand 11 states. [2020-12-22 08:44:08,707 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2020-12-22 08:44:09,579 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 27 [2020-12-22 08:44:10,047 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 34 [2020-12-22 08:44:11,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:44:11,874 INFO L93 Difference]: Finished difference Result 1275 states and 1785 transitions. [2020-12-22 08:44:11,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-12-22 08:44:11,875 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 64 [2020-12-22 08:44:11,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:44:11,880 INFO L225 Difference]: With dead ends: 1275 [2020-12-22 08:44:11,880 INFO L226 Difference]: Without dead ends: 1270 [2020-12-22 08:44:11,881 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=249, Invalid=743, Unknown=0, NotChecked=0, Total=992 [2020-12-22 08:44:11,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1270 states. [2020-12-22 08:44:11,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1270 to 319. [2020-12-22 08:44:11,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2020-12-22 08:44:11,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 405 transitions. [2020-12-22 08:44:11,944 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 405 transitions. Word has length 64 [2020-12-22 08:44:11,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:44:11,944 INFO L481 AbstractCegarLoop]: Abstraction has 319 states and 405 transitions. [2020-12-22 08:44:11,944 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 08:44:11,944 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 405 transitions. [2020-12-22 08:44:11,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 08:44:11,945 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:44:11,945 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 08:44:11,946 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 08:44:11,946 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 08:44:11,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:44:11,946 INFO L82 PathProgramCache]: Analyzing trace with hash -904154553, now seen corresponding path program 1 times [2020-12-22 08:44:11,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:44:11,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607511125] [2020-12-22 08:44:11,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:44:11,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:44:12,134 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 08:44:12,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607511125] [2020-12-22 08:44:12,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:44:12,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:44:12,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877670910] [2020-12-22 08:44:12,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:44:12,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:44:12,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:44:12,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:44:12,137 INFO L87 Difference]: Start difference. First operand 319 states and 405 transitions. Second operand 9 states. [2020-12-22 08:44:13,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:44:13,825 INFO L93 Difference]: Finished difference Result 718 states and 968 transitions. [2020-12-22 08:44:13,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 08:44:13,826 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-12-22 08:44:13,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:44:13,829 INFO L225 Difference]: With dead ends: 718 [2020-12-22 08:44:13,829 INFO L226 Difference]: Without dead ends: 713 [2020-12-22 08:44:13,830 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2020-12-22 08:44:13,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2020-12-22 08:44:13,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 319. [2020-12-22 08:44:13,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2020-12-22 08:44:13,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 404 transitions. [2020-12-22 08:44:13,880 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 404 transitions. Word has length 64 [2020-12-22 08:44:13,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:44:13,881 INFO L481 AbstractCegarLoop]: Abstraction has 319 states and 404 transitions. [2020-12-22 08:44:13,881 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:44:13,881 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 404 transitions. [2020-12-22 08:44:13,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 08:44:13,882 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:44:13,882 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 08:44:13,882 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 08:44:13,882 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 08:44:13,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:44:13,883 INFO L82 PathProgramCache]: Analyzing trace with hash 1008042549, now seen corresponding path program 1 times [2020-12-22 08:44:13,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:44:13,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316533018] [2020-12-22 08:44:13,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:44:13,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:44:14,039 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 08:44:14,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316533018] [2020-12-22 08:44:14,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:44:14,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:44:14,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818007523] [2020-12-22 08:44:14,040 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:44:14,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:44:14,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:44:14,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:44:14,042 INFO L87 Difference]: Start difference. First operand 319 states and 404 transitions. Second operand 9 states. [2020-12-22 08:44:15,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:44:15,715 INFO L93 Difference]: Finished difference Result 742 states and 1001 transitions. [2020-12-22 08:44:15,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 08:44:15,716 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-12-22 08:44:15,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:44:15,719 INFO L225 Difference]: With dead ends: 742 [2020-12-22 08:44:15,719 INFO L226 Difference]: Without dead ends: 725 [2020-12-22 08:44:15,720 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2020-12-22 08:44:15,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 725 states. [2020-12-22 08:44:15,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 725 to 319. [2020-12-22 08:44:15,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2020-12-22 08:44:15,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 403 transitions. [2020-12-22 08:44:15,777 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 403 transitions. Word has length 64 [2020-12-22 08:44:15,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:44:15,777 INFO L481 AbstractCegarLoop]: Abstraction has 319 states and 403 transitions. [2020-12-22 08:44:15,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:44:15,777 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 403 transitions. [2020-12-22 08:44:15,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 08:44:15,778 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:44:15,778 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 08:44:15,778 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 08:44:15,778 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 08:44:15,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:44:15,778 INFO L82 PathProgramCache]: Analyzing trace with hash -743174492, now seen corresponding path program 1 times [2020-12-22 08:44:15,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:44:15,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009542716] [2020-12-22 08:44:15,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:44:15,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:44:15,961 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 08:44:15,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009542716] [2020-12-22 08:44:15,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:44:15,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:44:15,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443328125] [2020-12-22 08:44:15,962 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:44:15,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:44:15,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:44:15,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:44:15,963 INFO L87 Difference]: Start difference. First operand 319 states and 403 transitions. Second operand 9 states. [2020-12-22 08:44:17,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:44:17,917 INFO L93 Difference]: Finished difference Result 718 states and 966 transitions. [2020-12-22 08:44:17,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 08:44:17,918 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-12-22 08:44:17,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:44:17,921 INFO L225 Difference]: With dead ends: 718 [2020-12-22 08:44:17,921 INFO L226 Difference]: Without dead ends: 713 [2020-12-22 08:44:17,922 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2020-12-22 08:44:17,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2020-12-22 08:44:17,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 315. [2020-12-22 08:44:17,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2020-12-22 08:44:17,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 398 transitions. [2020-12-22 08:44:17,980 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 398 transitions. Word has length 65 [2020-12-22 08:44:17,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:44:17,981 INFO L481 AbstractCegarLoop]: Abstraction has 315 states and 398 transitions. [2020-12-22 08:44:17,981 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:44:17,981 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 398 transitions. [2020-12-22 08:44:17,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 08:44:17,982 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:44:17,982 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 08:44:17,982 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 08:44:17,982 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 08:44:17,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:44:17,983 INFO L82 PathProgramCache]: Analyzing trace with hash -1642672525, now seen corresponding path program 1 times [2020-12-22 08:44:17,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:44:17,983 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907928305] [2020-12-22 08:44:17,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:44:18,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:44:18,150 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 08:44:18,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907928305] [2020-12-22 08:44:18,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:44:18,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:44:18,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087261653] [2020-12-22 08:44:18,151 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:44:18,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:44:18,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:44:18,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:44:18,152 INFO L87 Difference]: Start difference. First operand 315 states and 398 transitions. Second operand 9 states. [2020-12-22 08:44:19,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:44:19,828 INFO L93 Difference]: Finished difference Result 843 states and 1154 transitions. [2020-12-22 08:44:19,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 08:44:19,835 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-12-22 08:44:19,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:44:19,838 INFO L225 Difference]: With dead ends: 843 [2020-12-22 08:44:19,838 INFO L226 Difference]: Without dead ends: 721 [2020-12-22 08:44:19,839 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2020-12-22 08:44:19,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2020-12-22 08:44:19,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 311. [2020-12-22 08:44:19,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2020-12-22 08:44:19,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 393 transitions. [2020-12-22 08:44:19,884 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 393 transitions. Word has length 65 [2020-12-22 08:44:19,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:44:19,885 INFO L481 AbstractCegarLoop]: Abstraction has 311 states and 393 transitions. [2020-12-22 08:44:19,885 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:44:19,885 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 393 transitions. [2020-12-22 08:44:19,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 08:44:19,886 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:44:19,886 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 08:44:19,886 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 08:44:19,887 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 08:44:19,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:44:19,887 INFO L82 PathProgramCache]: Analyzing trace with hash 370944031, now seen corresponding path program 1 times [2020-12-22 08:44:19,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:44:19,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608153331] [2020-12-22 08:44:19,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:44:19,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:44:21,339 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 08:44:21,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608153331] [2020-12-22 08:44:21,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:44:21,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2020-12-22 08:44:21,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787593555] [2020-12-22 08:44:21,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-12-22 08:44:21,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:44:21,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-12-22 08:44:21,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=484, Unknown=0, NotChecked=0, Total=552 [2020-12-22 08:44:21,342 INFO L87 Difference]: Start difference. First operand 311 states and 393 transitions. Second operand 24 states. [2020-12-22 08:44:21,892 WARN L197 SmtUtils]: Spent 509.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 93 [2020-12-22 08:44:22,288 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 25 [2020-12-22 08:44:22,507 WARN L197 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 33 [2020-12-22 08:44:22,737 WARN L197 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 34 [2020-12-22 08:44:22,968 WARN L197 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 35 [2020-12-22 08:44:23,394 WARN L197 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 50 [2020-12-22 08:44:23,780 WARN L197 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 58 [2020-12-22 08:44:24,231 WARN L197 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2020-12-22 08:44:24,582 WARN L197 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2020-12-22 08:44:24,922 WARN L197 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2020-12-22 08:44:25,257 WARN L197 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2020-12-22 08:44:25,680 WARN L197 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2020-12-22 08:44:26,004 WARN L197 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 52 [2020-12-22 08:44:31,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:44:31,558 INFO L93 Difference]: Finished difference Result 1218 states and 1616 transitions. [2020-12-22 08:44:31,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-12-22 08:44:31,559 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 66 [2020-12-22 08:44:31,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:44:31,564 INFO L225 Difference]: With dead ends: 1218 [2020-12-22 08:44:31,564 INFO L226 Difference]: Without dead ends: 1109 [2020-12-22 08:44:31,565 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=347, Invalid=1459, Unknown=0, NotChecked=0, Total=1806 [2020-12-22 08:44:31,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1109 states. [2020-12-22 08:44:31,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1109 to 322. [2020-12-22 08:44:31,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 322 states. [2020-12-22 08:44:31,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 407 transitions. [2020-12-22 08:44:31,654 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 407 transitions. Word has length 66 [2020-12-22 08:44:31,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:44:31,654 INFO L481 AbstractCegarLoop]: Abstraction has 322 states and 407 transitions. [2020-12-22 08:44:31,654 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-12-22 08:44:31,655 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 407 transitions. [2020-12-22 08:44:31,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 08:44:31,656 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:44:31,656 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 08:44:31,656 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 08:44:31,656 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 08:44:31,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:44:31,657 INFO L82 PathProgramCache]: Analyzing trace with hash -1409573117, now seen corresponding path program 1 times [2020-12-22 08:44:31,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:44:31,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218931153] [2020-12-22 08:44:31,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:44:31,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:44:33,019 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 08:44:33,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218931153] [2020-12-22 08:44:33,019 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:44:33,019 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2020-12-22 08:44:33,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626767001] [2020-12-22 08:44:33,020 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-12-22 08:44:33,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:44:33,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-12-22 08:44:33,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=495, Unknown=0, NotChecked=0, Total=552 [2020-12-22 08:44:33,021 INFO L87 Difference]: Start difference. First operand 322 states and 407 transitions. Second operand 24 states. [2020-12-22 08:44:33,548 WARN L197 SmtUtils]: Spent 471.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 92 [2020-12-22 08:44:33,786 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 26 [2020-12-22 08:44:33,948 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 27 [2020-12-22 08:44:34,158 WARN L197 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2020-12-22 08:44:34,390 WARN L197 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 36 [2020-12-22 08:44:34,617 WARN L197 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 35 [2020-12-22 08:44:35,034 WARN L197 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2020-12-22 08:44:35,405 WARN L197 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2020-12-22 08:44:35,818 WARN L197 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2020-12-22 08:44:36,120 WARN L197 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2020-12-22 08:44:36,427 WARN L197 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2020-12-22 08:44:36,731 WARN L197 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2020-12-22 08:44:37,085 WARN L197 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2020-12-22 08:44:37,386 WARN L197 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2020-12-22 08:44:37,606 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2020-12-22 08:44:38,655 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2020-12-22 08:44:39,178 WARN L197 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2020-12-22 08:44:43,656 WARN L197 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 40 [2020-12-22 08:44:44,522 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 31 [2020-12-22 08:44:44,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:44:44,968 INFO L93 Difference]: Finished difference Result 1479 states and 2039 transitions. [2020-12-22 08:44:44,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-12-22 08:44:44,969 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 66 [2020-12-22 08:44:44,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:44:44,974 INFO L225 Difference]: With dead ends: 1479 [2020-12-22 08:44:44,974 INFO L226 Difference]: Without dead ends: 1367 [2020-12-22 08:44:44,975 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 343 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=388, Invalid=1774, Unknown=0, NotChecked=0, Total=2162 [2020-12-22 08:44:44,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1367 states. [2020-12-22 08:44:45,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1367 to 327. [2020-12-22 08:44:45,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 327 states. [2020-12-22 08:44:45,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 413 transitions. [2020-12-22 08:44:45,035 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 413 transitions. Word has length 66 [2020-12-22 08:44:45,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:44:45,035 INFO L481 AbstractCegarLoop]: Abstraction has 327 states and 413 transitions. [2020-12-22 08:44:45,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-12-22 08:44:45,036 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 413 transitions. [2020-12-22 08:44:45,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 08:44:45,036 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:44:45,036 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 08:44:45,037 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 08:44:45,037 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 08:44:45,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:44:45,037 INFO L82 PathProgramCache]: Analyzing trace with hash -1856476640, now seen corresponding path program 1 times [2020-12-22 08:44:45,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:44:45,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197057943] [2020-12-22 08:44:45,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:44:45,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:44:46,685 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 08:44:46,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197057943] [2020-12-22 08:44:46,686 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:44:46,686 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2020-12-22 08:44:46,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571503294] [2020-12-22 08:44:46,687 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-12-22 08:44:46,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:44:46,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-12-22 08:44:46,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=545, Unknown=0, NotChecked=0, Total=600 [2020-12-22 08:44:46,688 INFO L87 Difference]: Start difference. First operand 327 states and 413 transitions. Second operand 25 states. [2020-12-22 08:44:47,424 WARN L197 SmtUtils]: Spent 684.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 113 [2020-12-22 08:44:48,090 WARN L197 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 33 [2020-12-22 08:44:48,321 WARN L197 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 34 [2020-12-22 08:44:48,600 WARN L197 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 41 [2020-12-22 08:44:48,902 WARN L197 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 42 [2020-12-22 08:44:49,196 WARN L197 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 41 [2020-12-22 08:44:49,715 WARN L197 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2020-12-22 08:44:50,154 WARN L197 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2020-12-22 08:44:50,725 WARN L197 SmtUtils]: Spent 456.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 85 [2020-12-22 08:44:51,151 WARN L197 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2020-12-22 08:44:51,547 WARN L197 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2020-12-22 08:44:51,977 WARN L197 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2020-12-22 08:44:52,495 WARN L197 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2020-12-22 08:44:52,919 WARN L197 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2020-12-22 08:44:53,190 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 42 [2020-12-22 08:44:53,546 WARN L197 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2020-12-22 08:44:54,001 WARN L197 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2020-12-22 08:44:54,415 WARN L197 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 54 [2020-12-22 08:44:54,948 WARN L197 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 51 [2020-12-22 08:44:55,241 WARN L197 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2020-12-22 08:44:55,701 WARN L197 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 50 [2020-12-22 08:44:56,132 WARN L197 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 42 [2020-12-22 08:45:00,271 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 26 [2020-12-22 08:45:01,047 WARN L197 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 36 [2020-12-22 08:45:02,071 WARN L197 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2020-12-22 08:45:02,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:45:02,904 INFO L93 Difference]: Finished difference Result 1526 states and 2110 transitions. [2020-12-22 08:45:02,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-12-22 08:45:02,905 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 66 [2020-12-22 08:45:02,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:45:02,910 INFO L225 Difference]: With dead ends: 1526 [2020-12-22 08:45:02,910 INFO L226 Difference]: Without dead ends: 1418 [2020-12-22 08:45:02,911 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 374 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=555, Invalid=2201, Unknown=0, NotChecked=0, Total=2756 [2020-12-22 08:45:02,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1418 states. [2020-12-22 08:45:02,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1418 to 324. [2020-12-22 08:45:02,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 324 states. [2020-12-22 08:45:02,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 409 transitions. [2020-12-22 08:45:02,987 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 409 transitions. Word has length 66 [2020-12-22 08:45:02,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:45:02,987 INFO L481 AbstractCegarLoop]: Abstraction has 324 states and 409 transitions. [2020-12-22 08:45:02,987 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-12-22 08:45:02,988 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 409 transitions. [2020-12-22 08:45:02,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 08:45:02,989 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:45:02,989 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 08:45:02,989 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 08:45:02,989 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 08:45:02,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:45:02,990 INFO L82 PathProgramCache]: Analyzing trace with hash -1246346588, now seen corresponding path program 1 times [2020-12-22 08:45:02,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:45:02,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878479150] [2020-12-22 08:45:02,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:45:03,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:45:04,307 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 08:45:04,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878479150] [2020-12-22 08:45:04,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:45:04,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2020-12-22 08:45:04,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954537962] [2020-12-22 08:45:04,308 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-12-22 08:45:04,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:45:04,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-12-22 08:45:04,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=447, Unknown=0, NotChecked=0, Total=506 [2020-12-22 08:45:04,309 INFO L87 Difference]: Start difference. First operand 324 states and 409 transitions. Second operand 23 states. [2020-12-22 08:45:04,821 WARN L197 SmtUtils]: Spent 455.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 80 [2020-12-22 08:45:05,073 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 26 [2020-12-22 08:45:05,245 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 28 [2020-12-22 08:45:05,471 WARN L197 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2020-12-22 08:45:05,743 WARN L197 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 36 [2020-12-22 08:45:06,016 WARN L197 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2020-12-22 08:45:06,466 WARN L197 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-12-22 08:45:06,811 WARN L197 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2020-12-22 08:45:07,224 WARN L197 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2020-12-22 08:45:07,585 WARN L197 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2020-12-22 08:45:07,936 WARN L197 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2020-12-22 08:45:08,275 WARN L197 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-12-22 08:45:08,675 WARN L197 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2020-12-22 08:45:09,029 WARN L197 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-12-22 08:45:09,380 WARN L197 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2020-12-22 08:45:09,773 WARN L197 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2020-12-22 08:45:10,147 WARN L197 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-12-22 08:45:10,536 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 32 [2020-12-22 08:45:11,176 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 32 [2020-12-22 08:45:15,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:45:15,830 INFO L93 Difference]: Finished difference Result 1055 states and 1399 transitions. [2020-12-22 08:45:15,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-12-22 08:45:15,831 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 66 [2020-12-22 08:45:15,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:45:15,834 INFO L225 Difference]: With dead ends: 1055 [2020-12-22 08:45:15,834 INFO L226 Difference]: Without dead ends: 943 [2020-12-22 08:45:15,835 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=366, Invalid=1356, Unknown=0, NotChecked=0, Total=1722 [2020-12-22 08:45:15,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2020-12-22 08:45:15,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 330. [2020-12-22 08:45:15,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 330 states. [2020-12-22 08:45:15,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 415 transitions. [2020-12-22 08:45:15,908 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 415 transitions. Word has length 66 [2020-12-22 08:45:15,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:45:15,908 INFO L481 AbstractCegarLoop]: Abstraction has 330 states and 415 transitions. [2020-12-22 08:45:15,908 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-12-22 08:45:15,908 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 415 transitions. [2020-12-22 08:45:15,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 08:45:15,909 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:45:15,909 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 08:45:15,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 08:45:15,910 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 08:45:15,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:45:15,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1787778406, now seen corresponding path program 1 times [2020-12-22 08:45:15,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:45:15,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344603828] [2020-12-22 08:45:15,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:45:15,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:45:17,807 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 08:45:17,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344603828] [2020-12-22 08:45:17,808 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:45:17,808 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2020-12-22 08:45:17,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077228951] [2020-12-22 08:45:17,808 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-12-22 08:45:17,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:45:17,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-12-22 08:45:17,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=486, Unknown=0, NotChecked=0, Total=552 [2020-12-22 08:45:17,810 INFO L87 Difference]: Start difference. First operand 330 states and 415 transitions. Second operand 24 states. [2020-12-22 08:45:18,430 WARN L197 SmtUtils]: Spent 571.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 99 [2020-12-22 08:45:18,662 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 21 [2020-12-22 08:45:18,870 WARN L197 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 28 [2020-12-22 08:45:19,128 WARN L197 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 30 [2020-12-22 08:45:19,414 WARN L197 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 37 [2020-12-22 08:45:19,722 WARN L197 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 38 [2020-12-22 08:45:20,046 WARN L197 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 38 [2020-12-22 08:45:20,569 WARN L197 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 56 [2020-12-22 08:45:21,047 WARN L197 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2020-12-22 08:45:21,624 WARN L197 SmtUtils]: Spent 489.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 79 [2020-12-22 08:45:22,065 WARN L197 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2020-12-22 08:45:22,490 WARN L197 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2020-12-22 08:45:25,700 WARN L197 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 46 [2020-12-22 08:45:29,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:45:29,402 INFO L93 Difference]: Finished difference Result 1091 states and 1437 transitions. [2020-12-22 08:45:29,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-12-22 08:45:29,403 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 66 [2020-12-22 08:45:29,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:45:29,408 INFO L225 Difference]: With dead ends: 1091 [2020-12-22 08:45:29,409 INFO L226 Difference]: Without dead ends: 982 [2020-12-22 08:45:29,410 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=334, Invalid=1646, Unknown=0, NotChecked=0, Total=1980 [2020-12-22 08:45:29,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2020-12-22 08:45:29,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 345. [2020-12-22 08:45:29,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2020-12-22 08:45:29,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 436 transitions. [2020-12-22 08:45:29,498 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 436 transitions. Word has length 66 [2020-12-22 08:45:29,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:45:29,498 INFO L481 AbstractCegarLoop]: Abstraction has 345 states and 436 transitions. [2020-12-22 08:45:29,498 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-12-22 08:45:29,499 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 436 transitions. [2020-12-22 08:45:29,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 08:45:29,499 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:45:29,500 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 08:45:29,500 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 08:45:29,500 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 08:45:29,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:45:29,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1127331716, now seen corresponding path program 1 times [2020-12-22 08:45:29,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:45:29,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698259616] [2020-12-22 08:45:29,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:45:29,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:45:31,307 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 08:45:31,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698259616] [2020-12-22 08:45:31,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:45:31,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2020-12-22 08:45:31,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052802009] [2020-12-22 08:45:31,308 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-12-22 08:45:31,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:45:31,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-12-22 08:45:31,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=484, Unknown=0, NotChecked=0, Total=552 [2020-12-22 08:45:31,309 INFO L87 Difference]: Start difference. First operand 345 states and 436 transitions. Second operand 24 states. [2020-12-22 08:45:31,950 WARN L197 SmtUtils]: Spent 591.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 98 [2020-12-22 08:45:32,421 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 24 [2020-12-22 08:45:32,629 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 26 [2020-12-22 08:45:32,889 WARN L197 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 30 [2020-12-22 08:45:33,209 WARN L197 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 38 [2020-12-22 08:45:33,548 WARN L197 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 39 [2020-12-22 08:45:33,869 WARN L197 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 38 [2020-12-22 08:45:34,420 WARN L197 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2020-12-22 08:45:34,926 WARN L197 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2020-12-22 08:45:35,517 WARN L197 SmtUtils]: Spent 500.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 80 [2020-12-22 08:45:35,976 WARN L197 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2020-12-22 08:45:36,408 WARN L197 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2020-12-22 08:45:36,635 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 34 [2020-12-22 08:45:36,911 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 34 [2020-12-22 08:45:37,273 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 32 [2020-12-22 08:45:37,510 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 27 [2020-12-22 08:45:37,756 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 27 [2020-12-22 08:45:38,117 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 23 [2020-12-22 08:45:38,914 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 23 [2020-12-22 08:45:40,057 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 30 [2020-12-22 08:45:43,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:45:43,330 INFO L93 Difference]: Finished difference Result 1128 states and 1471 transitions. [2020-12-22 08:45:43,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-12-22 08:45:43,333 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 66 [2020-12-22 08:45:43,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:45:43,337 INFO L225 Difference]: With dead ends: 1128 [2020-12-22 08:45:43,337 INFO L226 Difference]: Without dead ends: 1124 [2020-12-22 08:45:43,338 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=372, Invalid=1790, Unknown=0, NotChecked=0, Total=2162 [2020-12-22 08:45:43,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1124 states. [2020-12-22 08:45:43,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1124 to 355. [2020-12-22 08:45:43,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 355 states. [2020-12-22 08:45:43,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 450 transitions. [2020-12-22 08:45:43,417 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 450 transitions. Word has length 66 [2020-12-22 08:45:43,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:45:43,417 INFO L481 AbstractCegarLoop]: Abstraction has 355 states and 450 transitions. [2020-12-22 08:45:43,417 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-12-22 08:45:43,417 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 450 transitions. [2020-12-22 08:45:43,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 08:45:43,418 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:45:43,418 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 08:45:43,418 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 08:45:43,418 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 08:45:43,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:45:43,419 INFO L82 PathProgramCache]: Analyzing trace with hash -653185432, now seen corresponding path program 1 times [2020-12-22 08:45:43,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:45:43,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871040472] [2020-12-22 08:45:43,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:45:43,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:45:45,024 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 08:45:45,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871040472] [2020-12-22 08:45:45,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:45:45,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2020-12-22 08:45:45,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267895228] [2020-12-22 08:45:45,025 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-12-22 08:45:45,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:45:45,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-12-22 08:45:45,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=455, Unknown=0, NotChecked=0, Total=506 [2020-12-22 08:45:45,026 INFO L87 Difference]: Start difference. First operand 355 states and 450 transitions. Second operand 23 states. [2020-12-22 08:45:45,500 WARN L197 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-12-22 08:45:45,931 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 29 [2020-12-22 08:45:46,157 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 30 [2020-12-22 08:45:46,437 WARN L197 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 08:45:46,729 WARN L197 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2020-12-22 08:45:47,028 WARN L197 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 08:45:47,533 WARN L197 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 08:45:47,936 WARN L197 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-12-22 08:45:48,383 WARN L197 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-12-22 08:45:48,792 WARN L197 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-12-22 08:45:49,193 WARN L197 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-12-22 08:45:49,462 WARN L197 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2020-12-22 08:45:50,017 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2020-12-22 08:45:56,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:45:56,472 INFO L93 Difference]: Finished difference Result 1070 states and 1419 transitions. [2020-12-22 08:45:56,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-12-22 08:45:56,473 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 66 [2020-12-22 08:45:56,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:45:56,477 INFO L225 Difference]: With dead ends: 1070 [2020-12-22 08:45:56,477 INFO L226 Difference]: Without dead ends: 958 [2020-12-22 08:45:56,478 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=291, Invalid=1515, Unknown=0, NotChecked=0, Total=1806 [2020-12-22 08:45:56,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 958 states. [2020-12-22 08:45:56,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 958 to 360. [2020-12-22 08:45:56,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 360 states. [2020-12-22 08:45:56,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 456 transitions. [2020-12-22 08:45:56,580 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 456 transitions. Word has length 66 [2020-12-22 08:45:56,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:45:56,581 INFO L481 AbstractCegarLoop]: Abstraction has 360 states and 456 transitions. [2020-12-22 08:45:56,581 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-12-22 08:45:56,581 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 456 transitions. [2020-12-22 08:45:56,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 08:45:56,582 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:45:56,582 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 08:45:56,582 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-22 08:45:56,583 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 08:45:56,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:45:56,583 INFO L82 PathProgramCache]: Analyzing trace with hash -670125992, now seen corresponding path program 1 times [2020-12-22 08:45:56,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:45:56,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216780608] [2020-12-22 08:45:56,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:45:56,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:45:56,905 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 08:45:56,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216780608] [2020-12-22 08:45:56,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:45:56,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 08:45:56,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705683454] [2020-12-22 08:45:56,906 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 08:45:56,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:45:56,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 08:45:56,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-12-22 08:45:56,907 INFO L87 Difference]: Start difference. First operand 360 states and 456 transitions. Second operand 11 states. [2020-12-22 08:45:57,041 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 27 [2020-12-22 08:45:57,379 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 31 [2020-12-22 08:45:57,818 WARN L197 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2020-12-22 08:45:58,949 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 27 [2020-12-22 08:45:59,426 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 34 [2020-12-22 08:45:59,998 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 30 [2020-12-22 08:46:01,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:46:01,625 INFO L93 Difference]: Finished difference Result 1317 states and 1834 transitions. [2020-12-22 08:46:01,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-12-22 08:46:01,627 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 67 [2020-12-22 08:46:01,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:46:01,631 INFO L225 Difference]: With dead ends: 1317 [2020-12-22 08:46:01,631 INFO L226 Difference]: Without dead ends: 1310 [2020-12-22 08:46:01,632 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=249, Invalid=743, Unknown=0, NotChecked=0, Total=992 [2020-12-22 08:46:01,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1310 states. [2020-12-22 08:46:01,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1310 to 364. [2020-12-22 08:46:01,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2020-12-22 08:46:01,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 459 transitions. [2020-12-22 08:46:01,715 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 459 transitions. Word has length 67 [2020-12-22 08:46:01,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:46:01,715 INFO L481 AbstractCegarLoop]: Abstraction has 364 states and 459 transitions. [2020-12-22 08:46:01,715 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 08:46:01,715 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 459 transitions. [2020-12-22 08:46:01,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 08:46:01,716 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:46:01,716 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 08:46:01,716 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-22 08:46:01,717 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 08:46:01,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:46:01,717 INFO L82 PathProgramCache]: Analyzing trace with hash -1209536804, now seen corresponding path program 1 times [2020-12-22 08:46:01,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:46:01,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221427157] [2020-12-22 08:46:01,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:46:01,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:46:02,760 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 25 [2020-12-22 08:46:02,925 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 25 [2020-12-22 08:46:03,317 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 08:46:03,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221427157] [2020-12-22 08:46:03,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:46:03,318 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-12-22 08:46:03,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59697775] [2020-12-22 08:46:03,318 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-22 08:46:03,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:46:03,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-22 08:46:03,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2020-12-22 08:46:03,319 INFO L87 Difference]: Start difference. First operand 364 states and 459 transitions. Second operand 19 states. [2020-12-22 08:46:03,713 WARN L197 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2020-12-22 08:46:03,978 WARN L197 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 29 [2020-12-22 08:46:04,338 WARN L197 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 32 [2020-12-22 08:46:04,666 WARN L197 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 35 [2020-12-22 08:46:05,048 WARN L197 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2020-12-22 08:46:05,540 WARN L197 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48 [2020-12-22 08:46:06,078 WARN L197 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 54 [2020-12-22 08:46:06,638 WARN L197 SmtUtils]: Spent 498.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2020-12-22 08:46:07,172 WARN L197 SmtUtils]: Spent 457.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 63 [2020-12-22 08:46:07,701 WARN L197 SmtUtils]: Spent 456.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 63 [2020-12-22 08:46:08,209 WARN L197 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2020-12-22 08:46:08,819 WARN L197 SmtUtils]: Spent 533.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65 [2020-12-22 08:46:09,297 WARN L197 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2020-12-22 08:46:09,760 WARN L197 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2020-12-22 08:46:10,307 WARN L197 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 39 [2020-12-22 08:46:10,804 WARN L197 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2020-12-22 08:46:11,326 WARN L197 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2020-12-22 08:46:14,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:46:14,289 INFO L93 Difference]: Finished difference Result 1030 states and 1365 transitions. [2020-12-22 08:46:14,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-12-22 08:46:14,290 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 67 [2020-12-22 08:46:14,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:46:14,293 INFO L225 Difference]: With dead ends: 1030 [2020-12-22 08:46:14,293 INFO L226 Difference]: Without dead ends: 915 [2020-12-22 08:46:14,294 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=297, Invalid=963, Unknown=0, NotChecked=0, Total=1260 [2020-12-22 08:46:14,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 915 states. [2020-12-22 08:46:14,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 915 to 360. [2020-12-22 08:46:14,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 360 states. [2020-12-22 08:46:14,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 454 transitions. [2020-12-22 08:46:14,433 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 454 transitions. Word has length 67 [2020-12-22 08:46:14,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:46:14,433 INFO L481 AbstractCegarLoop]: Abstraction has 360 states and 454 transitions. [2020-12-22 08:46:14,433 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-22 08:46:14,434 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 454 transitions. [2020-12-22 08:46:14,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 08:46:14,435 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:46:14,435 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 08:46:14,435 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-22 08:46:14,435 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 08:46:14,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:46:14,436 INFO L82 PathProgramCache]: Analyzing trace with hash -1046520172, now seen corresponding path program 1 times [2020-12-22 08:46:14,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:46:14,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462364319] [2020-12-22 08:46:14,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:46:14,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:46:14,970 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 08:46:14,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462364319] [2020-12-22 08:46:14,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:46:14,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-12-22 08:46:14,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983124373] [2020-12-22 08:46:14,971 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 08:46:14,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:46:14,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 08:46:14,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-12-22 08:46:14,972 INFO L87 Difference]: Start difference. First operand 360 states and 454 transitions. Second operand 11 states. [2020-12-22 08:46:15,125 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 20 [2020-12-22 08:46:15,292 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 23 [2020-12-22 08:46:15,444 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2020-12-22 08:46:15,662 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 22 [2020-12-22 08:46:15,869 WARN L197 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 28 [2020-12-22 08:46:16,064 WARN L197 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 28 [2020-12-22 08:46:16,694 WARN L197 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 28 [2020-12-22 08:46:17,212 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 25 [2020-12-22 08:46:17,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:46:17,731 INFO L93 Difference]: Finished difference Result 646 states and 847 transitions. [2020-12-22 08:46:17,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-22 08:46:17,733 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 67 [2020-12-22 08:46:17,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:46:17,735 INFO L225 Difference]: With dead ends: 646 [2020-12-22 08:46:17,735 INFO L226 Difference]: Without dead ends: 537 [2020-12-22 08:46:17,735 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2020-12-22 08:46:17,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2020-12-22 08:46:17,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 350. [2020-12-22 08:46:17,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 350 states. [2020-12-22 08:46:17,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 442 transitions. [2020-12-22 08:46:17,837 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 442 transitions. Word has length 67 [2020-12-22 08:46:17,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:46:17,838 INFO L481 AbstractCegarLoop]: Abstraction has 350 states and 442 transitions. [2020-12-22 08:46:17,838 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 08:46:17,838 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 442 transitions. [2020-12-22 08:46:17,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 08:46:17,839 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:46:17,839 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 08:46:17,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-12-22 08:46:17,839 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 08:46:17,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:46:17,840 INFO L82 PathProgramCache]: Analyzing trace with hash -570162683, now seen corresponding path program 1 times [2020-12-22 08:46:17,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:46:17,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303959115] [2020-12-22 08:46:17,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:46:17,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:46:18,784 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 08:46:18,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303959115] [2020-12-22 08:46:18,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:46:18,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-12-22 08:46:18,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984720852] [2020-12-22 08:46:18,785 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-22 08:46:18,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:46:18,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-22 08:46:18,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-12-22 08:46:18,786 INFO L87 Difference]: Start difference. First operand 350 states and 442 transitions. Second operand 13 states. [2020-12-22 08:46:19,376 WARN L197 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2020-12-22 08:46:20,075 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2020-12-22 08:46:21,605 WARN L197 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 30 [2020-12-22 08:46:22,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:46:22,028 INFO L93 Difference]: Finished difference Result 793 states and 1054 transitions. [2020-12-22 08:46:22,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-22 08:46:22,030 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 67 [2020-12-22 08:46:22,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:46:22,033 INFO L225 Difference]: With dead ends: 793 [2020-12-22 08:46:22,033 INFO L226 Difference]: Without dead ends: 681 [2020-12-22 08:46:22,034 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=140, Invalid=412, Unknown=0, NotChecked=0, Total=552 [2020-12-22 08:46:22,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2020-12-22 08:46:22,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 343. [2020-12-22 08:46:22,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2020-12-22 08:46:22,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 433 transitions. [2020-12-22 08:46:22,138 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 433 transitions. Word has length 67 [2020-12-22 08:46:22,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:46:22,138 INFO L481 AbstractCegarLoop]: Abstraction has 343 states and 433 transitions. [2020-12-22 08:46:22,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-22 08:46:22,139 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 433 transitions. [2020-12-22 08:46:22,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 08:46:22,140 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:46:22,140 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 08:46:22,140 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-12-22 08:46:22,140 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 08:46:22,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:46:22,140 INFO L82 PathProgramCache]: Analyzing trace with hash 1813633064, now seen corresponding path program 1 times [2020-12-22 08:46:22,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:46:22,141 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140824963] [2020-12-22 08:46:22,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:46:22,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:46:22,438 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 26 [2020-12-22 08:46:22,997 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 08:46:22,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140824963] [2020-12-22 08:46:22,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:46:22,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-12-22 08:46:22,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468597509] [2020-12-22 08:46:22,998 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 08:46:22,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:46:22,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 08:46:22,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-12-22 08:46:22,999 INFO L87 Difference]: Start difference. First operand 343 states and 433 transitions. Second operand 12 states. [2020-12-22 08:46:23,222 WARN L197 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 25 [2020-12-22 08:46:23,444 WARN L197 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 27 [2020-12-22 08:46:23,655 WARN L197 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 29 [2020-12-22 08:46:23,927 WARN L197 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 23 [2020-12-22 08:46:24,216 WARN L197 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 31 [2020-12-22 08:46:24,491 WARN L197 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 31 [2020-12-22 08:46:24,953 WARN L197 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 29 [2020-12-22 08:46:25,355 WARN L197 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 26 [2020-12-22 08:46:26,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:46:26,650 INFO L93 Difference]: Finished difference Result 829 states and 1133 transitions. [2020-12-22 08:46:26,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 08:46:26,651 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 67 [2020-12-22 08:46:26,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:46:26,654 INFO L225 Difference]: With dead ends: 829 [2020-12-22 08:46:26,654 INFO L226 Difference]: Without dead ends: 724 [2020-12-22 08:46:26,655 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=117, Invalid=345, Unknown=0, NotChecked=0, Total=462 [2020-12-22 08:46:26,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2020-12-22 08:46:26,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 343. [2020-12-22 08:46:26,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2020-12-22 08:46:26,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 432 transitions. [2020-12-22 08:46:26,750 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 432 transitions. Word has length 67 [2020-12-22 08:46:26,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:46:26,751 INFO L481 AbstractCegarLoop]: Abstraction has 343 states and 432 transitions. [2020-12-22 08:46:26,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-22 08:46:26,751 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 432 transitions. [2020-12-22 08:46:26,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 08:46:26,751 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:46:26,752 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 08:46:26,752 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-12-22 08:46:26,752 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 08:46:26,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:46:26,752 INFO L82 PathProgramCache]: Analyzing trace with hash -229278891, now seen corresponding path program 1 times [2020-12-22 08:46:26,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:46:26,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429957367] [2020-12-22 08:46:26,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:46:26,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:46:27,696 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 08:46:27,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429957367] [2020-12-22 08:46:27,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:46:27,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-12-22 08:46:27,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913356697] [2020-12-22 08:46:27,697 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-22 08:46:27,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:46:27,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-22 08:46:27,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-12-22 08:46:27,698 INFO L87 Difference]: Start difference. First operand 343 states and 432 transitions. Second operand 15 states. [2020-12-22 08:46:27,926 WARN L197 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2020-12-22 08:46:28,321 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 23 [2020-12-22 08:46:28,502 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 29 [2020-12-22 08:46:28,790 WARN L197 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2020-12-22 08:46:29,168 WARN L197 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 41 [2020-12-22 08:46:29,494 WARN L197 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-12-22 08:46:29,817 WARN L197 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-12-22 08:46:30,121 WARN L197 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-12-22 08:46:30,404 WARN L197 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2020-12-22 08:46:30,683 WARN L197 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-12-22 08:46:30,874 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 27 [2020-12-22 08:46:31,344 WARN L197 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-12-22 08:46:31,525 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 32 [2020-12-22 08:46:31,938 WARN L197 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 32 [2020-12-22 08:46:34,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:46:34,068 INFO L93 Difference]: Finished difference Result 847 states and 1098 transitions. [2020-12-22 08:46:34,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-12-22 08:46:34,069 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 67 [2020-12-22 08:46:34,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:46:34,073 INFO L225 Difference]: With dead ends: 847 [2020-12-22 08:46:34,073 INFO L226 Difference]: Without dead ends: 735 [2020-12-22 08:46:34,074 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=258, Invalid=734, Unknown=0, NotChecked=0, Total=992 [2020-12-22 08:46:34,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2020-12-22 08:46:34,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 336. [2020-12-22 08:46:34,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 336 states. [2020-12-22 08:46:34,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 424 transitions. [2020-12-22 08:46:34,225 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 424 transitions. Word has length 67 [2020-12-22 08:46:34,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:46:34,225 INFO L481 AbstractCegarLoop]: Abstraction has 336 states and 424 transitions. [2020-12-22 08:46:34,225 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-22 08:46:34,225 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 424 transitions. [2020-12-22 08:46:34,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 08:46:34,226 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:46:34,226 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, 1] [2020-12-22 08:46:34,226 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-12-22 08:46:34,227 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 08:46:34,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:46:34,227 INFO L82 PathProgramCache]: Analyzing trace with hash -444481636, now seen corresponding path program 1 times [2020-12-22 08:46:34,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:46:34,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754120392] [2020-12-22 08:46:34,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:46:34,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:46:34,651 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 22 [2020-12-22 08:46:35,081 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 08:46:35,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754120392] [2020-12-22 08:46:35,082 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:46:35,082 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-12-22 08:46:35,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776887973] [2020-12-22 08:46:35,082 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-22 08:46:35,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:46:35,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-22 08:46:35,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-12-22 08:46:35,083 INFO L87 Difference]: Start difference. First operand 336 states and 424 transitions. Second operand 13 states. [2020-12-22 08:46:35,340 WARN L197 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 31 [2020-12-22 08:46:35,648 WARN L197 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 28 [2020-12-22 08:46:35,855 WARN L197 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 27 [2020-12-22 08:46:36,240 WARN L197 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 31 [2020-12-22 08:46:36,759 WARN L197 SmtUtils]: Spent 426.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 41 [2020-12-22 08:46:37,253 WARN L197 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 41 [2020-12-22 08:46:37,714 WARN L197 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 37 [2020-12-22 08:46:38,249 WARN L197 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 34 [2020-12-22 08:46:39,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:46:39,658 INFO L93 Difference]: Finished difference Result 999 states and 1367 transitions. [2020-12-22 08:46:39,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-22 08:46:39,660 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 67 [2020-12-22 08:46:39,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:46:39,664 INFO L225 Difference]: With dead ends: 999 [2020-12-22 08:46:39,664 INFO L226 Difference]: Without dead ends: 983 [2020-12-22 08:46:39,665 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2020-12-22 08:46:39,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 983 states. [2020-12-22 08:46:39,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 983 to 320. [2020-12-22 08:46:39,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 320 states. [2020-12-22 08:46:39,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 407 transitions. [2020-12-22 08:46:39,778 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 407 transitions. Word has length 67 [2020-12-22 08:46:39,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:46:39,778 INFO L481 AbstractCegarLoop]: Abstraction has 320 states and 407 transitions. [2020-12-22 08:46:39,778 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-22 08:46:39,778 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 407 transitions. [2020-12-22 08:46:39,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 08:46:39,778 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:46:39,779 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 08:46:39,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-12-22 08:46:39,779 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 08:46:39,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:46:39,779 INFO L82 PathProgramCache]: Analyzing trace with hash -1074760314, now seen corresponding path program 1 times [2020-12-22 08:46:39,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:46:39,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780272027] [2020-12-22 08:46:39,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:46:39,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:46:40,091 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2020-12-22 08:46:40,298 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 14 [2020-12-22 08:46:40,573 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 08:46:40,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780272027] [2020-12-22 08:46:40,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:46:40,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-12-22 08:46:40,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10021925] [2020-12-22 08:46:40,574 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 08:46:40,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:46:40,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 08:46:40,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-12-22 08:46:40,574 INFO L87 Difference]: Start difference. First operand 320 states and 407 transitions. Second operand 12 states. [2020-12-22 08:46:40,740 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 19 [2020-12-22 08:46:40,952 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 17 [2020-12-22 08:46:41,167 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 21 [2020-12-22 08:46:41,438 WARN L197 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 30 [2020-12-22 08:46:41,687 WARN L197 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 30 [2020-12-22 08:46:42,035 WARN L197 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 26 [2020-12-22 08:46:42,341 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 24 [2020-12-22 08:46:43,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:46:43,066 INFO L93 Difference]: Finished difference Result 616 states and 817 transitions. [2020-12-22 08:46:43,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-22 08:46:43,068 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 67 [2020-12-22 08:46:43,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:46:43,071 INFO L225 Difference]: With dead ends: 616 [2020-12-22 08:46:43,071 INFO L226 Difference]: Without dead ends: 496 [2020-12-22 08:46:43,072 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2020-12-22 08:46:43,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2020-12-22 08:46:43,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 299. [2020-12-22 08:46:43,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2020-12-22 08:46:43,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 381 transitions. [2020-12-22 08:46:43,172 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 381 transitions. Word has length 67 [2020-12-22 08:46:43,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:46:43,172 INFO L481 AbstractCegarLoop]: Abstraction has 299 states and 381 transitions. [2020-12-22 08:46:43,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-22 08:46:43,172 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 381 transitions. [2020-12-22 08:46:43,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 08:46:43,173 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:46:43,173 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 08:46:43,173 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-12-22 08:46:43,173 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 08:46:43,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:46:43,174 INFO L82 PathProgramCache]: Analyzing trace with hash -1673815221, now seen corresponding path program 1 times [2020-12-22 08:46:43,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:46:43,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023220863] [2020-12-22 08:46:43,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:46:43,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:46:43,968 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 08:46:43,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023220863] [2020-12-22 08:46:43,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:46:43,969 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-12-22 08:46:43,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660255400] [2020-12-22 08:46:43,969 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-22 08:46:43,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:46:43,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-22 08:46:43,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-12-22 08:46:43,970 INFO L87 Difference]: Start difference. First operand 299 states and 381 transitions. Second operand 13 states. [2020-12-22 08:46:44,138 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 25 [2020-12-22 08:46:44,468 WARN L197 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 25 [2020-12-22 08:46:44,668 WARN L197 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 27 [2020-12-22 08:46:44,909 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 27 [2020-12-22 08:46:45,168 WARN L197 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2020-12-22 08:46:45,429 WARN L197 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2020-12-22 08:46:45,617 WARN L197 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 27 [2020-12-22 08:46:46,007 WARN L197 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 33 [2020-12-22 08:46:46,399 WARN L197 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 30 [2020-12-22 08:46:47,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:46:47,246 INFO L93 Difference]: Finished difference Result 692 states and 933 transitions. [2020-12-22 08:46:47,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 08:46:47,248 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 67 [2020-12-22 08:46:47,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:46:47,251 INFO L225 Difference]: With dead ends: 692 [2020-12-22 08:46:47,251 INFO L226 Difference]: Without dead ends: 583 [2020-12-22 08:46:47,252 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=142, Invalid=364, Unknown=0, NotChecked=0, Total=506 [2020-12-22 08:46:47,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2020-12-22 08:46:47,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 285. [2020-12-22 08:46:47,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 285 states. [2020-12-22 08:46:47,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 361 transitions. [2020-12-22 08:46:47,377 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 361 transitions. Word has length 67 [2020-12-22 08:46:47,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:46:47,378 INFO L481 AbstractCegarLoop]: Abstraction has 285 states and 361 transitions. [2020-12-22 08:46:47,378 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-22 08:46:47,378 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 361 transitions. [2020-12-22 08:46:47,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 08:46:47,378 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:46:47,379 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 08:46:47,379 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-12-22 08:46:47,379 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 08:46:47,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:46:47,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1241294901, now seen corresponding path program 1 times [2020-12-22 08:46:47,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:46:47,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814623781] [2020-12-22 08:46:47,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:46:47,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:46:47,779 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 23 [2020-12-22 08:46:47,922 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 23 [2020-12-22 08:46:48,080 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 24 [2020-12-22 08:46:48,569 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2020-12-22 08:46:48,755 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 08:46:48,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814623781] [2020-12-22 08:46:48,755 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:46:48,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-12-22 08:46:48,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796321071] [2020-12-22 08:46:48,756 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-22 08:46:48,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:46:48,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-22 08:46:48,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-12-22 08:46:48,757 INFO L87 Difference]: Start difference. First operand 285 states and 361 transitions. Second operand 16 states. [2020-12-22 08:46:49,023 WARN L197 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 26 [2020-12-22 08:46:49,564 WARN L197 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 26 [2020-12-22 08:46:50,008 WARN L197 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 29 [2020-12-22 08:46:50,395 WARN L197 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 38 [2020-12-22 08:46:50,883 WARN L197 SmtUtils]: Spent 427.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 45 [2020-12-22 08:46:51,262 WARN L197 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 39 [2020-12-22 08:46:51,770 WARN L197 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 39 [2020-12-22 08:46:52,170 WARN L197 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2020-12-22 08:46:52,782 WARN L197 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 46 [2020-12-22 08:46:53,116 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 22 [2020-12-22 08:46:54,184 WARN L197 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 35 [2020-12-22 08:46:55,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:46:55,176 INFO L93 Difference]: Finished difference Result 632 states and 823 transitions. [2020-12-22 08:46:55,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-22 08:46:55,177 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 67 [2020-12-22 08:46:55,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:46:55,180 INFO L225 Difference]: With dead ends: 632 [2020-12-22 08:46:55,180 INFO L226 Difference]: Without dead ends: 628 [2020-12-22 08:46:55,181 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=211, Invalid=659, Unknown=0, NotChecked=0, Total=870 [2020-12-22 08:46:55,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2020-12-22 08:46:55,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 285. [2020-12-22 08:46:55,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 285 states. [2020-12-22 08:46:55,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 361 transitions. [2020-12-22 08:46:55,287 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 361 transitions. Word has length 67 [2020-12-22 08:46:55,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:46:55,287 INFO L481 AbstractCegarLoop]: Abstraction has 285 states and 361 transitions. [2020-12-22 08:46:55,287 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-22 08:46:55,287 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 361 transitions. [2020-12-22 08:46:55,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 08:46:55,288 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:46:55,288 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 08:46:55,288 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-12-22 08:46:55,289 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 08:46:55,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:46:55,289 INFO L82 PathProgramCache]: Analyzing trace with hash -539222247, now seen corresponding path program 1 times [2020-12-22 08:46:55,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:46:55,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139450044] [2020-12-22 08:46:55,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:46:55,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:46:55,758 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 26 [2020-12-22 08:46:55,893 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 24 [2020-12-22 08:46:56,055 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 26 [2020-12-22 08:46:56,251 WARN L197 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 20 [2020-12-22 08:46:56,480 WARN L197 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 27 [2020-12-22 08:46:56,650 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 19 [2020-12-22 08:46:56,821 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 19 [2020-12-22 08:46:56,996 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 17 [2020-12-22 08:46:57,346 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 08:46:57,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139450044] [2020-12-22 08:46:57,346 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:46:57,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-12-22 08:46:57,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900288896] [2020-12-22 08:46:57,347 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-22 08:46:57,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:46:57,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-22 08:46:57,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2020-12-22 08:46:57,348 INFO L87 Difference]: Start difference. First operand 285 states and 361 transitions. Second operand 19 states. [2020-12-22 08:46:57,652 WARN L197 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 34 [2020-12-22 08:46:57,889 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 27 [2020-12-22 08:46:58,112 WARN L197 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 29 [2020-12-22 08:46:58,397 WARN L197 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 32 [2020-12-22 08:46:58,688 WARN L197 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 34 [2020-12-22 08:46:59,026 WARN L197 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 36 [2020-12-22 08:46:59,564 WARN L197 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 46 [2020-12-22 08:47:00,066 WARN L197 SmtUtils]: Spent 426.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2020-12-22 08:47:00,496 WARN L197 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 50 [2020-12-22 08:47:00,913 WARN L197 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 50 [2020-12-22 08:47:01,416 WARN L197 SmtUtils]: Spent 436.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2020-12-22 08:47:01,970 WARN L197 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 45 [2020-12-22 08:47:02,567 WARN L197 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2020-12-22 08:47:02,932 WARN L197 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 39 [2020-12-22 08:47:03,421 WARN L197 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 39 [2020-12-22 08:47:06,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:47:06,544 INFO L93 Difference]: Finished difference Result 866 states and 1165 transitions. [2020-12-22 08:47:06,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-12-22 08:47:06,545 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 67 [2020-12-22 08:47:06,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:47:06,549 INFO L225 Difference]: With dead ends: 866 [2020-12-22 08:47:06,549 INFO L226 Difference]: Without dead ends: 754 [2020-12-22 08:47:06,550 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=275, Invalid=915, Unknown=0, NotChecked=0, Total=1190 [2020-12-22 08:47:06,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2020-12-22 08:47:06,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 270. [2020-12-22 08:47:06,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-12-22 08:47:06,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 340 transitions. [2020-12-22 08:47:06,677 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 340 transitions. Word has length 67 [2020-12-22 08:47:06,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:47:06,677 INFO L481 AbstractCegarLoop]: Abstraction has 270 states and 340 transitions. [2020-12-22 08:47:06,677 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-22 08:47:06,677 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 340 transitions. [2020-12-22 08:47:06,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 08:47:06,678 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:47:06,678 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 08:47:06,678 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-12-22 08:47:06,678 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 08:47:06,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:47:06,679 INFO L82 PathProgramCache]: Analyzing trace with hash 1128954968, now seen corresponding path program 1 times [2020-12-22 08:47:06,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:47:06,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45884468] [2020-12-22 08:47:06,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:47:06,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:47:06,879 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 08:47:06,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45884468] [2020-12-22 08:47:06,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:47:06,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:47:06,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191839513] [2020-12-22 08:47:06,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:47:06,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:47:06,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:47:06,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:47:06,881 INFO L87 Difference]: Start difference. First operand 270 states and 340 transitions. Second operand 9 states. [2020-12-22 08:47:08,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:47:08,602 INFO L93 Difference]: Finished difference Result 430 states and 553 transitions. [2020-12-22 08:47:08,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 08:47:08,604 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 67 [2020-12-22 08:47:08,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:47:08,606 INFO L225 Difference]: With dead ends: 430 [2020-12-22 08:47:08,607 INFO L226 Difference]: Without dead ends: 423 [2020-12-22 08:47:08,607 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-12-22 08:47:08,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2020-12-22 08:47:08,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 270. [2020-12-22 08:47:08,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-12-22 08:47:08,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 339 transitions. [2020-12-22 08:47:08,725 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 339 transitions. Word has length 67 [2020-12-22 08:47:08,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:47:08,725 INFO L481 AbstractCegarLoop]: Abstraction has 270 states and 339 transitions. [2020-12-22 08:47:08,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:47:08,725 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 339 transitions. [2020-12-22 08:47:08,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 08:47:08,726 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:47:08,726 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 08:47:08,726 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-12-22 08:47:08,726 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 08:47:08,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:47:08,727 INFO L82 PathProgramCache]: Analyzing trace with hash -710008920, now seen corresponding path program 1 times [2020-12-22 08:47:08,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:47:08,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258701201] [2020-12-22 08:47:08,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:47:08,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:47:09,078 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 08:47:09,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258701201] [2020-12-22 08:47:09,079 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:47:09,079 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 08:47:09,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911466124] [2020-12-22 08:47:09,080 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 08:47:09,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:47:09,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 08:47:09,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-12-22 08:47:09,080 INFO L87 Difference]: Start difference. First operand 270 states and 339 transitions. Second operand 11 states. [2020-12-22 08:47:09,240 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 27 [2020-12-22 08:47:09,612 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 31 [2020-12-22 08:47:09,786 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 27 [2020-12-22 08:47:10,119 WARN L197 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2020-12-22 08:47:10,613 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 24 [2020-12-22 08:47:10,967 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 27 [2020-12-22 08:47:11,570 WARN L197 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 31 [2020-12-22 08:47:11,777 WARN L197 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 34 [2020-12-22 08:47:12,090 WARN L197 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2020-12-22 08:47:12,568 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 30 [2020-12-22 08:47:13,693 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 30 [2020-12-22 08:47:14,069 WARN L197 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 27 [2020-12-22 08:47:14,220 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 23 [2020-12-22 08:47:15,877 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 24 [2020-12-22 08:47:17,276 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 27 [2020-12-22 08:47:17,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:47:17,467 INFO L93 Difference]: Finished difference Result 1816 states and 2576 transitions. [2020-12-22 08:47:17,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-12-22 08:47:17,469 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 67 [2020-12-22 08:47:17,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:47:17,472 INFO L225 Difference]: With dead ends: 1816 [2020-12-22 08:47:17,472 INFO L226 Difference]: Without dead ends: 1686 [2020-12-22 08:47:17,473 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=374, Invalid=1186, Unknown=0, NotChecked=0, Total=1560 [2020-12-22 08:47:17,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1686 states. [2020-12-22 08:47:17,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1686 to 274. [2020-12-22 08:47:17,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-12-22 08:47:17,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 343 transitions. [2020-12-22 08:47:17,601 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 343 transitions. Word has length 67 [2020-12-22 08:47:17,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:47:17,601 INFO L481 AbstractCegarLoop]: Abstraction has 274 states and 343 transitions. [2020-12-22 08:47:17,601 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 08:47:17,601 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 343 transitions. [2020-12-22 08:47:17,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 08:47:17,602 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:47:17,602 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 08:47:17,602 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-12-22 08:47:17,602 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 08:47:17,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:47:17,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1303055616, now seen corresponding path program 1 times [2020-12-22 08:47:17,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:47:17,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167377224] [2020-12-22 08:47:17,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:47:17,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:47:17,986 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 08:47:17,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167377224] [2020-12-22 08:47:17,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:47:17,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 08:47:17,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093126054] [2020-12-22 08:47:17,987 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 08:47:17,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:47:17,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 08:47:17,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-12-22 08:47:17,988 INFO L87 Difference]: Start difference. First operand 274 states and 343 transitions. Second operand 11 states. [2020-12-22 08:47:18,128 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 27 [2020-12-22 08:47:18,479 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 31 [2020-12-22 08:47:18,646 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 27 [2020-12-22 08:47:19,008 WARN L197 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2020-12-22 08:47:19,525 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 24 [2020-12-22 08:47:20,051 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 27 [2020-12-22 08:47:20,527 WARN L197 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 34 [2020-12-22 08:47:21,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:47:21,982 INFO L93 Difference]: Finished difference Result 717 states and 968 transitions. [2020-12-22 08:47:21,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-12-22 08:47:21,984 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 67 [2020-12-22 08:47:21,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:47:21,985 INFO L225 Difference]: With dead ends: 717 [2020-12-22 08:47:21,985 INFO L226 Difference]: Without dead ends: 710 [2020-12-22 08:47:21,986 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=204, Invalid=552, Unknown=0, NotChecked=0, Total=756 [2020-12-22 08:47:21,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2020-12-22 08:47:22,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 274. [2020-12-22 08:47:22,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-12-22 08:47:22,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 342 transitions. [2020-12-22 08:47:22,111 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 342 transitions. Word has length 67 [2020-12-22 08:47:22,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:47:22,111 INFO L481 AbstractCegarLoop]: Abstraction has 274 states and 342 transitions. [2020-12-22 08:47:22,111 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 08:47:22,111 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 342 transitions. [2020-12-22 08:47:22,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 08:47:22,112 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:47:22,112 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 08:47:22,112 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-12-22 08:47:22,112 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 08:47:22,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:47:22,113 INFO L82 PathProgramCache]: Analyzing trace with hash 926661436, now seen corresponding path program 1 times [2020-12-22 08:47:22,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:47:22,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640755395] [2020-12-22 08:47:22,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:47:22,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:47:22,601 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 29 [2020-12-22 08:47:22,785 WARN L197 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 30 [2020-12-22 08:47:24,048 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 08:47:24,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640755395] [2020-12-22 08:47:24,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:47:24,048 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2020-12-22 08:47:24,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404492532] [2020-12-22 08:47:24,049 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-12-22 08:47:24,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:47:24,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-12-22 08:47:24,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2020-12-22 08:47:24,050 INFO L87 Difference]: Start difference. First operand 274 states and 342 transitions. Second operand 20 states. [2020-12-22 08:47:24,422 WARN L197 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 38 [2020-12-22 08:47:24,800 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 21 [2020-12-22 08:47:25,065 WARN L197 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 23 [2020-12-22 08:47:25,448 WARN L197 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 38 [2020-12-22 08:47:25,853 WARN L197 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 40 [2020-12-22 08:47:26,410 WARN L197 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2020-12-22 08:47:26,839 WARN L197 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 43 [2020-12-22 08:47:27,393 WARN L197 SmtUtils]: Spent 460.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2020-12-22 08:47:27,937 WARN L197 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2020-12-22 08:47:28,467 WARN L197 SmtUtils]: Spent 439.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2020-12-22 08:47:29,086 WARN L197 SmtUtils]: Spent 505.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2020-12-22 08:47:29,465 WARN L197 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 30 [2020-12-22 08:47:30,091 WARN L197 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2020-12-22 08:47:30,630 WARN L197 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2020-12-22 08:47:31,176 WARN L197 SmtUtils]: Spent 482.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2020-12-22 08:47:32,229 WARN L197 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 46 [2020-12-22 08:47:32,887 WARN L197 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2020-12-22 08:47:33,514 WARN L197 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 30 [2020-12-22 08:47:33,889 WARN L197 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 43 [2020-12-22 08:47:35,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:47:35,779 INFO L93 Difference]: Finished difference Result 701 states and 909 transitions. [2020-12-22 08:47:35,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-12-22 08:47:35,781 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 67 [2020-12-22 08:47:35,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:47:35,782 INFO L225 Difference]: With dead ends: 701 [2020-12-22 08:47:35,782 INFO L226 Difference]: Without dead ends: 697 [2020-12-22 08:47:35,783 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=334, Invalid=1226, Unknown=0, NotChecked=0, Total=1560 [2020-12-22 08:47:35,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-12-22 08:47:35,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 288. [2020-12-22 08:47:35,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 288 states. [2020-12-22 08:47:35,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 361 transitions. [2020-12-22 08:47:35,917 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 361 transitions. Word has length 67 [2020-12-22 08:47:35,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:47:35,918 INFO L481 AbstractCegarLoop]: Abstraction has 288 states and 361 transitions. [2020-12-22 08:47:35,918 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-12-22 08:47:35,918 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 361 transitions. [2020-12-22 08:47:35,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 08:47:35,918 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:47:35,918 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 08:47:35,918 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-12-22 08:47:35,918 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 08:47:35,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:47:35,919 INFO L82 PathProgramCache]: Analyzing trace with hash 763644804, now seen corresponding path program 1 times [2020-12-22 08:47:35,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:47:35,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137234575] [2020-12-22 08:47:35,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:47:35,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:47:36,224 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 21 [2020-12-22 08:47:36,368 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 20 [2020-12-22 08:47:36,525 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 22 [2020-12-22 08:47:37,101 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 08:47:37,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137234575] [2020-12-22 08:47:37,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:47:37,101 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-12-22 08:47:37,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862798384] [2020-12-22 08:47:37,102 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-22 08:47:37,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:47:37,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-22 08:47:37,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-12-22 08:47:37,103 INFO L87 Difference]: Start difference. First operand 288 states and 361 transitions. Second operand 14 states. [2020-12-22 08:47:37,299 WARN L197 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 21 [2020-12-22 08:47:37,596 WARN L197 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 23 [2020-12-22 08:47:37,781 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 20 [2020-12-22 08:47:38,008 WARN L197 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 23 [2020-12-22 08:47:38,391 WARN L197 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 37 [2020-12-22 08:47:38,736 WARN L197 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 36 [2020-12-22 08:47:39,050 WARN L197 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 36 [2020-12-22 08:47:39,359 WARN L197 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2020-12-22 08:47:39,791 WARN L197 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 42 [2020-12-22 08:47:40,582 WARN L197 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 29 [2020-12-22 08:47:42,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:47:42,007 INFO L93 Difference]: Finished difference Result 989 states and 1341 transitions. [2020-12-22 08:47:42,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-12-22 08:47:42,008 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 67 [2020-12-22 08:47:42,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:47:42,010 INFO L225 Difference]: With dead ends: 989 [2020-12-22 08:47:42,010 INFO L226 Difference]: Without dead ends: 957 [2020-12-22 08:47:42,011 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=171, Invalid=585, Unknown=0, NotChecked=0, Total=756 [2020-12-22 08:47:42,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 957 states. [2020-12-22 08:47:42,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 957 to 280. [2020-12-22 08:47:42,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 280 states. [2020-12-22 08:47:42,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 349 transitions. [2020-12-22 08:47:42,142 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 349 transitions. Word has length 67 [2020-12-22 08:47:42,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:47:42,143 INFO L481 AbstractCegarLoop]: Abstraction has 280 states and 349 transitions. [2020-12-22 08:47:42,143 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-22 08:47:42,143 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 349 transitions. [2020-12-22 08:47:42,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 08:47:42,143 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:47:42,143 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 08:47:42,143 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-12-22 08:47:42,144 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 08:47:42,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:47:42,144 INFO L82 PathProgramCache]: Analyzing trace with hash -1661843325, now seen corresponding path program 1 times [2020-12-22 08:47:42,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:47:42,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288623945] [2020-12-22 08:47:42,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:47:42,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:47:42,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:47:42,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288623945] [2020-12-22 08:47:42,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:47:42,376 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:47:42,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449193021] [2020-12-22 08:47:42,377 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:47:42,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:47:42,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:47:42,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:47:42,378 INFO L87 Difference]: Start difference. First operand 280 states and 349 transitions. Second operand 9 states. [2020-12-22 08:47:44,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:47:44,249 INFO L93 Difference]: Finished difference Result 440 states and 562 transitions. [2020-12-22 08:47:44,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 08:47:44,250 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 68 [2020-12-22 08:47:44,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:47:44,251 INFO L225 Difference]: With dead ends: 440 [2020-12-22 08:47:44,251 INFO L226 Difference]: Without dead ends: 433 [2020-12-22 08:47:44,252 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=112, Invalid=268, Unknown=0, NotChecked=0, Total=380 [2020-12-22 08:47:44,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2020-12-22 08:47:44,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 276. [2020-12-22 08:47:44,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 276 states. [2020-12-22 08:47:44,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 344 transitions. [2020-12-22 08:47:44,379 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 344 transitions. Word has length 68 [2020-12-22 08:47:44,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:47:44,379 INFO L481 AbstractCegarLoop]: Abstraction has 276 states and 344 transitions. [2020-12-22 08:47:44,379 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:47:44,379 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 344 transitions. [2020-12-22 08:47:44,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 08:47:44,380 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:47:44,380 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, 1] [2020-12-22 08:47:44,380 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-12-22 08:47:44,380 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 08:47:44,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:47:44,380 INFO L82 PathProgramCache]: Analyzing trace with hash 164552875, now seen corresponding path program 1 times [2020-12-22 08:47:44,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:47:44,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88070754] [2020-12-22 08:47:44,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:47:44,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:47:46,283 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 08:47:46,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88070754] [2020-12-22 08:47:46,283 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:47:46,283 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2020-12-22 08:47:46,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970126255] [2020-12-22 08:47:46,284 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-12-22 08:47:46,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:47:46,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-12-22 08:47:46,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2020-12-22 08:47:46,284 INFO L87 Difference]: Start difference. First operand 276 states and 344 transitions. Second operand 23 states. [2020-12-22 08:47:46,962 WARN L197 SmtUtils]: Spent 614.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 88 [2020-12-22 08:47:47,311 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 25 [2020-12-22 08:47:47,628 WARN L197 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 31