/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/locks/test_locks_15-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 11:36:28,989 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 11:36:28,992 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 11:36:29,026 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 11:36:29,027 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 11:36:29,028 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 11:36:29,030 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 11:36:29,032 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 11:36:29,034 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 11:36:29,036 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 11:36:29,037 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 11:36:29,038 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 11:36:29,039 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 11:36:29,040 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 11:36:29,042 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 11:36:29,043 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 11:36:29,045 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 11:36:29,046 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 11:36:29,048 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 11:36:29,051 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 11:36:29,053 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 11:36:29,055 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 11:36:29,056 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 11:36:29,057 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 11:36:29,061 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-01-06 11:36:29,062 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-01-06 11:36:29,062 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-01-06 11:36:29,064 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-01-06 11:36:29,064 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-01-06 11:36:29,066 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-01-06 11:36:29,066 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 11:36:29,067 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 11:36:29,068 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 11:36:29,069 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 11:36:29,071 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 11:36:29,085 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 11:36:29,086 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 11:36:29,087 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 11:36:29,087 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 11:36:29,088 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 11:36:29,089 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 11:36:29,090 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-01-06 11:36:29,118 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 11:36:29,118 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 11:36:29,122 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 11:36:29,123 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 11:36:29,123 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 11:36:29,123 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 11:36:29,124 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 11:36:29,124 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 11:36:29,124 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 11:36:29,124 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 11:36:29,125 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 11:36:29,125 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 11:36:29,125 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 11:36:29,125 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 11:36:29,126 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 11:36:29,126 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 11:36:29,126 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 11:36:29,127 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 11:36:29,127 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 11:36:29,127 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 11:36:29,127 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 11:36:29,128 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 11:36:29,128 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 11:36:29,128 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 11:36:29,128 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 11:36:29,129 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-bitabs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 11:36:29,515 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 11:36:29,558 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 11:36:29,561 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 11:36:29,563 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 11:36:29,564 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 11:36:29,565 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/locks/test_locks_15-2.c [2021-01-06 11:36:29,655 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/72747f11f/2586eedc6a1640e8bc301b16bd62472f/FLAG07ce45acf [2021-01-06 11:36:30,290 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 11:36:30,291 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/locks/test_locks_15-2.c [2021-01-06 11:36:30,304 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/72747f11f/2586eedc6a1640e8bc301b16bd62472f/FLAG07ce45acf [2021-01-06 11:36:30,626 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/72747f11f/2586eedc6a1640e8bc301b16bd62472f [2021-01-06 11:36:30,629 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 11:36:30,631 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 11:36:30,633 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 11:36:30,633 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 11:36:30,641 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 11:36:30,642 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 11:36:30" (1/1) ... [2021-01-06 11:36:30,643 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cab8692 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:36:30, skipping insertion in model container [2021-01-06 11:36:30,644 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 11:36:30" (1/1) ... [2021-01-06 11:36:30,652 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 11:36:30,675 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: lhs: VariableLHS[~cond~0,] left hand side expression in assignment: lhs: VariableLHS[~lk1~0,] left hand side expression in assignment: lhs: VariableLHS[~lk2~0,] left hand side expression in assignment: lhs: VariableLHS[~lk3~0,] left hand side expression in assignment: lhs: VariableLHS[~lk4~0,] left hand side expression in assignment: lhs: VariableLHS[~lk5~0,] left hand side expression in assignment: lhs: VariableLHS[~lk6~0,] left hand side expression in assignment: lhs: VariableLHS[~lk7~0,] left hand side expression in assignment: lhs: VariableLHS[~lk8~0,] left hand side expression in assignment: lhs: VariableLHS[~lk9~0,] left hand side expression in assignment: lhs: VariableLHS[~lk10~0,] left hand side expression in assignment: lhs: VariableLHS[~lk11~0,] left hand side expression in assignment: lhs: VariableLHS[~lk12~0,] left hand side expression in assignment: lhs: VariableLHS[~lk13~0,] left hand side expression in assignment: lhs: VariableLHS[~lk14~0,] left hand side expression in assignment: lhs: VariableLHS[~lk15~0,] left hand side expression in assignment: lhs: VariableLHS[~lk1~0,] left hand side expression in assignment: lhs: VariableLHS[~lk2~0,] left hand side expression in assignment: lhs: VariableLHS[~lk3~0,] left hand side expression in assignment: lhs: VariableLHS[~lk4~0,] left hand side expression in assignment: lhs: VariableLHS[~lk5~0,] left hand side expression in assignment: lhs: VariableLHS[~lk6~0,] left hand side expression in assignment: lhs: VariableLHS[~lk7~0,] left hand side expression in assignment: lhs: VariableLHS[~lk8~0,] left hand side expression in assignment: lhs: VariableLHS[~lk9~0,] left hand side expression in assignment: lhs: VariableLHS[~lk10~0,] left hand side expression in assignment: lhs: VariableLHS[~lk11~0,] left hand side expression in assignment: lhs: VariableLHS[~lk12~0,] left hand side expression in assignment: lhs: VariableLHS[~lk13~0,] left hand side expression in assignment: lhs: VariableLHS[~lk14~0,] left hand side expression in assignment: lhs: VariableLHS[~lk15~0,] left hand side expression in assignment: lhs: VariableLHS[~lk1~0,] left hand side expression in assignment: lhs: VariableLHS[~lk2~0,] left hand side expression in assignment: lhs: VariableLHS[~lk3~0,] left hand side expression in assignment: lhs: VariableLHS[~lk4~0,] left hand side expression in assignment: lhs: VariableLHS[~lk5~0,] left hand side expression in assignment: lhs: VariableLHS[~lk6~0,] left hand side expression in assignment: lhs: VariableLHS[~lk7~0,] left hand side expression in assignment: lhs: VariableLHS[~lk8~0,] left hand side expression in assignment: lhs: VariableLHS[~lk9~0,] left hand side expression in assignment: lhs: VariableLHS[~lk10~0,] left hand side expression in assignment: lhs: VariableLHS[~lk11~0,] left hand side expression in assignment: lhs: VariableLHS[~lk12~0,] left hand side expression in assignment: lhs: VariableLHS[~lk13~0,] left hand side expression in assignment: lhs: VariableLHS[~lk14~0,] left hand side expression in assignment: lhs: VariableLHS[~lk15~0,] [2021-01-06 11:36:30,862 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/locks/test_locks_15-2.c[5628,5641] [2021-01-06 11:36:30,869 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 11:36:30,887 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: lhs: VariableLHS[~cond~0,] left hand side expression in assignment: lhs: VariableLHS[~lk1~0,] left hand side expression in assignment: lhs: VariableLHS[~lk2~0,] left hand side expression in assignment: lhs: VariableLHS[~lk3~0,] left hand side expression in assignment: lhs: VariableLHS[~lk4~0,] left hand side expression in assignment: lhs: VariableLHS[~lk5~0,] left hand side expression in assignment: lhs: VariableLHS[~lk6~0,] left hand side expression in assignment: lhs: VariableLHS[~lk7~0,] left hand side expression in assignment: lhs: VariableLHS[~lk8~0,] left hand side expression in assignment: lhs: VariableLHS[~lk9~0,] left hand side expression in assignment: lhs: VariableLHS[~lk10~0,] left hand side expression in assignment: lhs: VariableLHS[~lk11~0,] left hand side expression in assignment: lhs: VariableLHS[~lk12~0,] left hand side expression in assignment: lhs: VariableLHS[~lk13~0,] left hand side expression in assignment: lhs: VariableLHS[~lk14~0,] left hand side expression in assignment: lhs: VariableLHS[~lk15~0,] left hand side expression in assignment: lhs: VariableLHS[~lk1~0,] left hand side expression in assignment: lhs: VariableLHS[~lk2~0,] left hand side expression in assignment: lhs: VariableLHS[~lk3~0,] left hand side expression in assignment: lhs: VariableLHS[~lk4~0,] left hand side expression in assignment: lhs: VariableLHS[~lk5~0,] left hand side expression in assignment: lhs: VariableLHS[~lk6~0,] left hand side expression in assignment: lhs: VariableLHS[~lk7~0,] left hand side expression in assignment: lhs: VariableLHS[~lk8~0,] left hand side expression in assignment: lhs: VariableLHS[~lk9~0,] left hand side expression in assignment: lhs: VariableLHS[~lk10~0,] left hand side expression in assignment: lhs: VariableLHS[~lk11~0,] left hand side expression in assignment: lhs: VariableLHS[~lk12~0,] left hand side expression in assignment: lhs: VariableLHS[~lk13~0,] left hand side expression in assignment: lhs: VariableLHS[~lk14~0,] left hand side expression in assignment: lhs: VariableLHS[~lk15~0,] left hand side expression in assignment: lhs: VariableLHS[~lk1~0,] left hand side expression in assignment: lhs: VariableLHS[~lk2~0,] left hand side expression in assignment: lhs: VariableLHS[~lk3~0,] left hand side expression in assignment: lhs: VariableLHS[~lk4~0,] left hand side expression in assignment: lhs: VariableLHS[~lk5~0,] left hand side expression in assignment: lhs: VariableLHS[~lk6~0,] left hand side expression in assignment: lhs: VariableLHS[~lk7~0,] left hand side expression in assignment: lhs: VariableLHS[~lk8~0,] left hand side expression in assignment: lhs: VariableLHS[~lk9~0,] left hand side expression in assignment: lhs: VariableLHS[~lk10~0,] left hand side expression in assignment: lhs: VariableLHS[~lk11~0,] left hand side expression in assignment: lhs: VariableLHS[~lk12~0,] left hand side expression in assignment: lhs: VariableLHS[~lk13~0,] left hand side expression in assignment: lhs: VariableLHS[~lk14~0,] left hand side expression in assignment: lhs: VariableLHS[~lk15~0,] [2021-01-06 11:36:30,940 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/locks/test_locks_15-2.c[5628,5641] [2021-01-06 11:36:30,942 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 11:36:30,958 INFO L208 MainTranslator]: Completed translation [2021-01-06 11:36:30,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:36:30 WrapperNode [2021-01-06 11:36:30,959 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 11:36:30,960 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 11:36:30,960 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 11:36:30,960 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 11:36:30,969 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:36:30" (1/1) ... [2021-01-06 11:36:30,979 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:36:30" (1/1) ... [2021-01-06 11:36:31,008 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 11:36:31,008 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 11:36:31,009 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 11:36:31,009 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 11:36:31,019 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:36:30" (1/1) ... [2021-01-06 11:36:31,019 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:36:30" (1/1) ... [2021-01-06 11:36:31,022 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:36:30" (1/1) ... [2021-01-06 11:36:31,022 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:36:30" (1/1) ... [2021-01-06 11:36:31,027 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:36:30" (1/1) ... [2021-01-06 11:36:31,033 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:36:30" (1/1) ... [2021-01-06 11:36:31,035 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:36:30" (1/1) ... [2021-01-06 11:36:31,038 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 11:36:31,039 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 11:36:31,040 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 11:36:31,040 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 11:36:31,041 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:36:30" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/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 [2021-01-06 11:36:31,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 11:36:31,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 11:36:31,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 11:36:31,173 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 11:36:31,794 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 11:36:31,795 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-01-06 11:36:31,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 11:36:31 BoogieIcfgContainer [2021-01-06 11:36:31,796 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 11:36:31,798 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 11:36:31,798 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 11:36:31,802 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 11:36:31,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 11:36:30" (1/3) ... [2021-01-06 11:36:31,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fe1798 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 11:36:31, skipping insertion in model container [2021-01-06 11:36:31,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:36:30" (2/3) ... [2021-01-06 11:36:31,804 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fe1798 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 11:36:31, skipping insertion in model container [2021-01-06 11:36:31,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 11:36:31" (3/3) ... [2021-01-06 11:36:31,805 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_15-2.c [2021-01-06 11:36:31,812 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 11:36:31,818 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 11:36:31,840 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-01-06 11:36:31,881 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 11:36:31,881 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 11:36:31,881 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 11:36:31,882 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 11:36:31,884 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 11:36:31,884 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 11:36:31,884 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 11:36:31,884 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 11:36:31,904 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states. [2021-01-06 11:36:31,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-01-06 11:36:31,912 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:36:31,913 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] [2021-01-06 11:36:31,914 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:36:31,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:36:31,922 INFO L82 PathProgramCache]: Analyzing trace with hash -1188560455, now seen corresponding path program 1 times [2021-01-06 11:36:31,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:36:31,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103824440] [2021-01-06 11:36:31,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:36:32,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:36:32,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:36:32,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103824440] [2021-01-06 11:36:32,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:36:32,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:36:32,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759969129] [2021-01-06 11:36:32,319 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:36:32,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:36:32,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:36:32,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:32,337 INFO L87 Difference]: Start difference. First operand 55 states. Second operand 3 states. [2021-01-06 11:36:32,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:36:32,394 INFO L93 Difference]: Finished difference Result 113 states and 205 transitions. [2021-01-06 11:36:32,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:36:32,396 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2021-01-06 11:36:32,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:36:32,430 INFO L225 Difference]: With dead ends: 113 [2021-01-06 11:36:32,430 INFO L226 Difference]: Without dead ends: 99 [2021-01-06 11:36:32,434 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:32,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-01-06 11:36:32,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 67. [2021-01-06 11:36:32,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2021-01-06 11:36:32,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 126 transitions. [2021-01-06 11:36:32,504 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 126 transitions. Word has length 22 [2021-01-06 11:36:32,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:36:32,504 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 126 transitions. [2021-01-06 11:36:32,504 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:36:32,505 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 126 transitions. [2021-01-06 11:36:32,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-01-06 11:36:32,507 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:36:32,507 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] [2021-01-06 11:36:32,508 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 11:36:32,508 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:36:32,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:36:32,511 INFO L82 PathProgramCache]: Analyzing trace with hash 1112262135, now seen corresponding path program 1 times [2021-01-06 11:36:32,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:36:32,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13312310] [2021-01-06 11:36:32,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:36:32,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:36:32,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:36:32,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13312310] [2021-01-06 11:36:32,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:36:32,655 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:36:32,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993503701] [2021-01-06 11:36:32,656 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:36:32,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:36:32,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:36:32,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:32,658 INFO L87 Difference]: Start difference. First operand 67 states and 126 transitions. Second operand 3 states. [2021-01-06 11:36:32,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:36:32,691 INFO L93 Difference]: Finished difference Result 164 states and 309 transitions. [2021-01-06 11:36:32,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:36:32,692 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2021-01-06 11:36:32,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:36:32,694 INFO L225 Difference]: With dead ends: 164 [2021-01-06 11:36:32,694 INFO L226 Difference]: Without dead ends: 99 [2021-01-06 11:36:32,696 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:32,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-01-06 11:36:32,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 97. [2021-01-06 11:36:32,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2021-01-06 11:36:32,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 182 transitions. [2021-01-06 11:36:32,708 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 182 transitions. Word has length 22 [2021-01-06 11:36:32,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:36:32,709 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 182 transitions. [2021-01-06 11:36:32,709 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:36:32,709 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 182 transitions. [2021-01-06 11:36:32,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-01-06 11:36:32,710 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:36:32,710 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] [2021-01-06 11:36:32,711 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 11:36:32,711 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:36:32,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:36:32,712 INFO L82 PathProgramCache]: Analyzing trace with hash 1809543287, now seen corresponding path program 1 times [2021-01-06 11:36:32,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:36:32,712 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399356613] [2021-01-06 11:36:32,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:36:32,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:36:32,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:36:32,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399356613] [2021-01-06 11:36:32,762 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:36:32,762 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:36:32,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794140075] [2021-01-06 11:36:32,763 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:36:32,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:36:32,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:36:32,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:32,764 INFO L87 Difference]: Start difference. First operand 97 states and 182 transitions. Second operand 3 states. [2021-01-06 11:36:32,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:36:32,809 INFO L93 Difference]: Finished difference Result 150 states and 276 transitions. [2021-01-06 11:36:32,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:36:32,810 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2021-01-06 11:36:32,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:36:32,812 INFO L225 Difference]: With dead ends: 150 [2021-01-06 11:36:32,812 INFO L226 Difference]: Without dead ends: 102 [2021-01-06 11:36:32,813 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:32,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-01-06 11:36:32,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 100. [2021-01-06 11:36:32,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2021-01-06 11:36:32,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 184 transitions. [2021-01-06 11:36:32,826 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 184 transitions. Word has length 23 [2021-01-06 11:36:32,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:36:32,826 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 184 transitions. [2021-01-06 11:36:32,826 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:36:32,826 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 184 transitions. [2021-01-06 11:36:32,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-01-06 11:36:32,828 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:36:32,828 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] [2021-01-06 11:36:32,828 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-06 11:36:32,828 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:36:32,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:36:32,829 INFO L82 PathProgramCache]: Analyzing trace with hash 120599545, now seen corresponding path program 1 times [2021-01-06 11:36:32,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:36:32,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496041800] [2021-01-06 11:36:32,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:36:32,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:36:32,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:36:32,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496041800] [2021-01-06 11:36:32,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:36:32,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:36:32,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084729501] [2021-01-06 11:36:32,878 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:36:32,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:36:32,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:36:32,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:32,880 INFO L87 Difference]: Start difference. First operand 100 states and 184 transitions. Second operand 3 states. [2021-01-06 11:36:32,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:36:32,905 INFO L93 Difference]: Finished difference Result 193 states and 357 transitions. [2021-01-06 11:36:32,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:36:32,907 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2021-01-06 11:36:32,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:36:32,910 INFO L225 Difference]: With dead ends: 193 [2021-01-06 11:36:32,910 INFO L226 Difference]: Without dead ends: 191 [2021-01-06 11:36:32,915 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:32,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2021-01-06 11:36:32,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 133. [2021-01-06 11:36:32,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2021-01-06 11:36:32,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 245 transitions. [2021-01-06 11:36:32,933 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 245 transitions. Word has length 23 [2021-01-06 11:36:32,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:36:32,933 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 245 transitions. [2021-01-06 11:36:32,933 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:36:32,934 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 245 transitions. [2021-01-06 11:36:32,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-01-06 11:36:32,938 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:36:32,938 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] [2021-01-06 11:36:32,938 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-06 11:36:32,939 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:36:32,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:36:32,944 INFO L82 PathProgramCache]: Analyzing trace with hash -1873545161, now seen corresponding path program 1 times [2021-01-06 11:36:32,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:36:32,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53791942] [2021-01-06 11:36:32,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:36:32,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:36:33,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:36:33,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53791942] [2021-01-06 11:36:33,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:36:33,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:36:33,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453853252] [2021-01-06 11:36:33,028 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:36:33,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:36:33,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:36:33,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:33,030 INFO L87 Difference]: Start difference. First operand 133 states and 245 transitions. Second operand 3 states. [2021-01-06 11:36:33,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:36:33,055 INFO L93 Difference]: Finished difference Result 321 states and 595 transitions. [2021-01-06 11:36:33,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:36:33,055 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2021-01-06 11:36:33,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:36:33,057 INFO L225 Difference]: With dead ends: 321 [2021-01-06 11:36:33,058 INFO L226 Difference]: Without dead ends: 193 [2021-01-06 11:36:33,059 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:33,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2021-01-06 11:36:33,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 191. [2021-01-06 11:36:33,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2021-01-06 11:36:33,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 351 transitions. [2021-01-06 11:36:33,076 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 351 transitions. Word has length 23 [2021-01-06 11:36:33,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:36:33,077 INFO L481 AbstractCegarLoop]: Abstraction has 191 states and 351 transitions. [2021-01-06 11:36:33,077 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:36:33,077 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 351 transitions. [2021-01-06 11:36:33,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-01-06 11:36:33,078 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:36:33,079 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] [2021-01-06 11:36:33,079 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-06 11:36:33,079 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:36:33,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:36:33,080 INFO L82 PathProgramCache]: Analyzing trace with hash -556169332, now seen corresponding path program 1 times [2021-01-06 11:36:33,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:36:33,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861892246] [2021-01-06 11:36:33,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:36:33,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:36:33,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:36:33,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861892246] [2021-01-06 11:36:33,122 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:36:33,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:36:33,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947239622] [2021-01-06 11:36:33,123 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:36:33,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:36:33,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:36:33,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:33,129 INFO L87 Difference]: Start difference. First operand 191 states and 351 transitions. Second operand 3 states. [2021-01-06 11:36:33,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:36:33,172 INFO L93 Difference]: Finished difference Result 288 states and 526 transitions. [2021-01-06 11:36:33,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:36:33,172 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2021-01-06 11:36:33,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:36:33,174 INFO L225 Difference]: With dead ends: 288 [2021-01-06 11:36:33,174 INFO L226 Difference]: Without dead ends: 195 [2021-01-06 11:36:33,175 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:33,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-01-06 11:36:33,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 193. [2021-01-06 11:36:33,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2021-01-06 11:36:33,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 351 transitions. [2021-01-06 11:36:33,206 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 351 transitions. Word has length 24 [2021-01-06 11:36:33,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:36:33,206 INFO L481 AbstractCegarLoop]: Abstraction has 193 states and 351 transitions. [2021-01-06 11:36:33,206 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:36:33,206 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 351 transitions. [2021-01-06 11:36:33,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-01-06 11:36:33,208 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:36:33,208 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] [2021-01-06 11:36:33,208 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-06 11:36:33,209 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:36:33,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:36:33,209 INFO L82 PathProgramCache]: Analyzing trace with hash 2049854222, now seen corresponding path program 1 times [2021-01-06 11:36:33,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:36:33,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535483960] [2021-01-06 11:36:33,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:36:33,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:36:33,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:36:33,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535483960] [2021-01-06 11:36:33,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:36:33,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:36:33,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933396217] [2021-01-06 11:36:33,268 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:36:33,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:36:33,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:36:33,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:33,270 INFO L87 Difference]: Start difference. First operand 193 states and 351 transitions. Second operand 3 states. [2021-01-06 11:36:33,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:36:33,291 INFO L93 Difference]: Finished difference Result 561 states and 1025 transitions. [2021-01-06 11:36:33,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:36:33,292 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2021-01-06 11:36:33,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:36:33,294 INFO L225 Difference]: With dead ends: 561 [2021-01-06 11:36:33,294 INFO L226 Difference]: Without dead ends: 375 [2021-01-06 11:36:33,296 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:33,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2021-01-06 11:36:33,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 373. [2021-01-06 11:36:33,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 373 states. [2021-01-06 11:36:33,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 675 transitions. [2021-01-06 11:36:33,319 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 675 transitions. Word has length 24 [2021-01-06 11:36:33,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:36:33,319 INFO L481 AbstractCegarLoop]: Abstraction has 373 states and 675 transitions. [2021-01-06 11:36:33,319 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:36:33,319 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 675 transitions. [2021-01-06 11:36:33,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-01-06 11:36:33,322 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:36:33,322 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] [2021-01-06 11:36:33,322 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-06 11:36:33,322 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:36:33,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:36:33,323 INFO L82 PathProgramCache]: Analyzing trace with hash -250968368, now seen corresponding path program 1 times [2021-01-06 11:36:33,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:36:33,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543983887] [2021-01-06 11:36:33,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:36:33,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:36:33,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:36:33,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543983887] [2021-01-06 11:36:33,361 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:36:33,361 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:36:33,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146827886] [2021-01-06 11:36:33,362 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:36:33,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:36:33,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:36:33,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:33,363 INFO L87 Difference]: Start difference. First operand 373 states and 675 transitions. Second operand 3 states. [2021-01-06 11:36:33,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:36:33,383 INFO L93 Difference]: Finished difference Result 481 states and 877 transitions. [2021-01-06 11:36:33,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:36:33,386 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2021-01-06 11:36:33,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:36:33,390 INFO L225 Difference]: With dead ends: 481 [2021-01-06 11:36:33,390 INFO L226 Difference]: Without dead ends: 479 [2021-01-06 11:36:33,391 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:33,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2021-01-06 11:36:33,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 373. [2021-01-06 11:36:33,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 373 states. [2021-01-06 11:36:33,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 671 transitions. [2021-01-06 11:36:33,415 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 671 transitions. Word has length 24 [2021-01-06 11:36:33,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:36:33,416 INFO L481 AbstractCegarLoop]: Abstraction has 373 states and 671 transitions. [2021-01-06 11:36:33,416 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:36:33,416 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 671 transitions. [2021-01-06 11:36:33,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-01-06 11:36:33,418 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:36:33,419 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] [2021-01-06 11:36:33,419 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-06 11:36:33,419 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:36:33,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:36:33,420 INFO L82 PathProgramCache]: Analyzing trace with hash -878816148, now seen corresponding path program 1 times [2021-01-06 11:36:33,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:36:33,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229155956] [2021-01-06 11:36:33,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:36:33,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:36:33,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:36:33,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229155956] [2021-01-06 11:36:33,455 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:36:33,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:36:33,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608811762] [2021-01-06 11:36:33,456 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:36:33,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:36:33,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:36:33,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:33,457 INFO L87 Difference]: Start difference. First operand 373 states and 671 transitions. Second operand 3 states. [2021-01-06 11:36:33,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:36:33,487 INFO L93 Difference]: Finished difference Result 709 states and 1289 transitions. [2021-01-06 11:36:33,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:36:33,488 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2021-01-06 11:36:33,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:36:33,492 INFO L225 Difference]: With dead ends: 709 [2021-01-06 11:36:33,492 INFO L226 Difference]: Without dead ends: 707 [2021-01-06 11:36:33,493 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:33,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2021-01-06 11:36:33,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 513. [2021-01-06 11:36:33,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 513 states. [2021-01-06 11:36:33,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 911 transitions. [2021-01-06 11:36:33,514 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 911 transitions. Word has length 25 [2021-01-06 11:36:33,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:36:33,515 INFO L481 AbstractCegarLoop]: Abstraction has 513 states and 911 transitions. [2021-01-06 11:36:33,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:36:33,515 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 911 transitions. [2021-01-06 11:36:33,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-01-06 11:36:33,518 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:36:33,519 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] [2021-01-06 11:36:33,519 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-01-06 11:36:33,519 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:36:33,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:36:33,520 INFO L82 PathProgramCache]: Analyzing trace with hash 1422006442, now seen corresponding path program 1 times [2021-01-06 11:36:33,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:36:33,520 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099805405] [2021-01-06 11:36:33,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:36:33,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:36:33,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:36:33,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099805405] [2021-01-06 11:36:33,591 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:36:33,591 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:36:33,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958880198] [2021-01-06 11:36:33,592 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:36:33,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:36:33,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:36:33,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:33,595 INFO L87 Difference]: Start difference. First operand 513 states and 911 transitions. Second operand 3 states. [2021-01-06 11:36:33,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:36:33,648 INFO L93 Difference]: Finished difference Result 1237 states and 2209 transitions. [2021-01-06 11:36:33,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:36:33,649 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2021-01-06 11:36:33,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:36:33,660 INFO L225 Difference]: With dead ends: 1237 [2021-01-06 11:36:33,664 INFO L226 Difference]: Without dead ends: 731 [2021-01-06 11:36:33,666 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:33,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2021-01-06 11:36:33,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 729. [2021-01-06 11:36:33,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 729 states. [2021-01-06 11:36:33,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 1291 transitions. [2021-01-06 11:36:33,707 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 1291 transitions. Word has length 25 [2021-01-06 11:36:33,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:36:33,707 INFO L481 AbstractCegarLoop]: Abstraction has 729 states and 1291 transitions. [2021-01-06 11:36:33,707 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:36:33,707 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 1291 transitions. [2021-01-06 11:36:33,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-01-06 11:36:33,712 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:36:33,712 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] [2021-01-06 11:36:33,712 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-01-06 11:36:33,713 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:36:33,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:36:33,713 INFO L82 PathProgramCache]: Analyzing trace with hash -1473284061, now seen corresponding path program 1 times [2021-01-06 11:36:33,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:36:33,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714469388] [2021-01-06 11:36:33,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:36:33,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:36:33,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:36:33,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714469388] [2021-01-06 11:36:33,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:36:33,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:36:33,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605558341] [2021-01-06 11:36:33,793 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:36:33,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:36:33,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:36:33,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:33,794 INFO L87 Difference]: Start difference. First operand 729 states and 1291 transitions. Second operand 3 states. [2021-01-06 11:36:33,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:36:33,836 INFO L93 Difference]: Finished difference Result 1101 states and 1945 transitions. [2021-01-06 11:36:33,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:36:33,836 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2021-01-06 11:36:33,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:36:33,841 INFO L225 Difference]: With dead ends: 1101 [2021-01-06 11:36:33,842 INFO L226 Difference]: Without dead ends: 743 [2021-01-06 11:36:33,843 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:33,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2021-01-06 11:36:33,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 741. [2021-01-06 11:36:33,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 741 states. [2021-01-06 11:36:33,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 1299 transitions. [2021-01-06 11:36:33,868 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 1299 transitions. Word has length 26 [2021-01-06 11:36:33,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:36:33,869 INFO L481 AbstractCegarLoop]: Abstraction has 741 states and 1299 transitions. [2021-01-06 11:36:33,869 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:36:33,869 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 1299 transitions. [2021-01-06 11:36:33,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-01-06 11:36:33,870 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:36:33,871 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] [2021-01-06 11:36:33,871 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-01-06 11:36:33,871 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:36:33,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:36:33,871 INFO L82 PathProgramCache]: Analyzing trace with hash 1132739493, now seen corresponding path program 1 times [2021-01-06 11:36:33,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:36:33,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048877949] [2021-01-06 11:36:33,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:36:33,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:36:33,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:36:33,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048877949] [2021-01-06 11:36:33,922 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:36:33,922 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:36:33,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286911817] [2021-01-06 11:36:33,923 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:36:33,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:36:33,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:36:33,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:33,925 INFO L87 Difference]: Start difference. First operand 741 states and 1299 transitions. Second operand 3 states. [2021-01-06 11:36:33,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:36:33,958 INFO L93 Difference]: Finished difference Result 1385 states and 2461 transitions. [2021-01-06 11:36:33,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:36:33,960 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2021-01-06 11:36:33,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:36:33,968 INFO L225 Difference]: With dead ends: 1385 [2021-01-06 11:36:33,968 INFO L226 Difference]: Without dead ends: 1383 [2021-01-06 11:36:33,969 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:33,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1383 states. [2021-01-06 11:36:34,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1383 to 1029. [2021-01-06 11:36:34,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1029 states. [2021-01-06 11:36:34,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1029 states to 1029 states and 1771 transitions. [2021-01-06 11:36:34,023 INFO L78 Accepts]: Start accepts. Automaton has 1029 states and 1771 transitions. Word has length 26 [2021-01-06 11:36:34,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:36:34,024 INFO L481 AbstractCegarLoop]: Abstraction has 1029 states and 1771 transitions. [2021-01-06 11:36:34,024 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:36:34,024 INFO L276 IsEmpty]: Start isEmpty. Operand 1029 states and 1771 transitions. [2021-01-06 11:36:34,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-01-06 11:36:34,026 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:36:34,026 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] [2021-01-06 11:36:34,027 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-01-06 11:36:34,027 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:36:34,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:36:34,027 INFO L82 PathProgramCache]: Analyzing trace with hash -861405213, now seen corresponding path program 1 times [2021-01-06 11:36:34,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:36:34,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389709534] [2021-01-06 11:36:34,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:36:34,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:36:34,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:36:34,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389709534] [2021-01-06 11:36:34,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:36:34,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:36:34,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587117531] [2021-01-06 11:36:34,072 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:36:34,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:36:34,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:36:34,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:34,074 INFO L87 Difference]: Start difference. First operand 1029 states and 1771 transitions. Second operand 3 states. [2021-01-06 11:36:34,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:36:34,121 INFO L93 Difference]: Finished difference Result 2457 states and 4253 transitions. [2021-01-06 11:36:34,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:36:34,121 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2021-01-06 11:36:34,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:36:34,129 INFO L225 Difference]: With dead ends: 2457 [2021-01-06 11:36:34,129 INFO L226 Difference]: Without dead ends: 1447 [2021-01-06 11:36:34,136 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:34,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1447 states. [2021-01-06 11:36:34,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1447 to 1445. [2021-01-06 11:36:34,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1445 states. [2021-01-06 11:36:34,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 2483 transitions. [2021-01-06 11:36:34,188 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 2483 transitions. Word has length 26 [2021-01-06 11:36:34,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:36:34,191 INFO L481 AbstractCegarLoop]: Abstraction has 1445 states and 2483 transitions. [2021-01-06 11:36:34,191 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:36:34,191 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 2483 transitions. [2021-01-06 11:36:34,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-01-06 11:36:34,194 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:36:34,195 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] [2021-01-06 11:36:34,195 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-01-06 11:36:34,195 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:36:34,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:36:34,196 INFO L82 PathProgramCache]: Analyzing trace with hash 755399007, now seen corresponding path program 1 times [2021-01-06 11:36:34,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:36:34,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729438064] [2021-01-06 11:36:34,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:36:34,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:36:34,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:36:34,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729438064] [2021-01-06 11:36:34,249 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:36:34,249 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:36:34,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603120921] [2021-01-06 11:36:34,250 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:36:34,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:36:34,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:36:34,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:34,251 INFO L87 Difference]: Start difference. First operand 1445 states and 2483 transitions. Second operand 3 states. [2021-01-06 11:36:34,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:36:34,288 INFO L93 Difference]: Finished difference Result 2169 states and 3717 transitions. [2021-01-06 11:36:34,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:36:34,288 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2021-01-06 11:36:34,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:36:34,296 INFO L225 Difference]: With dead ends: 2169 [2021-01-06 11:36:34,296 INFO L226 Difference]: Without dead ends: 1463 [2021-01-06 11:36:34,299 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:34,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1463 states. [2021-01-06 11:36:34,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1463 to 1461. [2021-01-06 11:36:34,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1461 states. [2021-01-06 11:36:34,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1461 states to 1461 states and 2483 transitions. [2021-01-06 11:36:34,348 INFO L78 Accepts]: Start accepts. Automaton has 1461 states and 2483 transitions. Word has length 27 [2021-01-06 11:36:34,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:36:34,348 INFO L481 AbstractCegarLoop]: Abstraction has 1461 states and 2483 transitions. [2021-01-06 11:36:34,349 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:36:34,349 INFO L276 IsEmpty]: Start isEmpty. Operand 1461 states and 2483 transitions. [2021-01-06 11:36:34,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-01-06 11:36:34,350 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:36:34,350 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] [2021-01-06 11:36:34,351 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-01-06 11:36:34,351 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:36:34,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:36:34,351 INFO L82 PathProgramCache]: Analyzing trace with hash -933544735, now seen corresponding path program 1 times [2021-01-06 11:36:34,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:36:34,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490388909] [2021-01-06 11:36:34,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:36:34,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:36:34,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:36:34,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490388909] [2021-01-06 11:36:34,389 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:36:34,389 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:36:34,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273400107] [2021-01-06 11:36:34,390 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:36:34,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:36:34,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:36:34,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:34,392 INFO L87 Difference]: Start difference. First operand 1461 states and 2483 transitions. Second operand 3 states. [2021-01-06 11:36:34,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:36:34,454 INFO L93 Difference]: Finished difference Result 2697 states and 4661 transitions. [2021-01-06 11:36:34,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:36:34,455 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2021-01-06 11:36:34,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:36:34,468 INFO L225 Difference]: With dead ends: 2697 [2021-01-06 11:36:34,468 INFO L226 Difference]: Without dead ends: 2695 [2021-01-06 11:36:34,469 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:34,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2695 states. [2021-01-06 11:36:34,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2695 to 2053. [2021-01-06 11:36:34,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2053 states. [2021-01-06 11:36:34,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2053 states to 2053 states and 3411 transitions. [2021-01-06 11:36:34,527 INFO L78 Accepts]: Start accepts. Automaton has 2053 states and 3411 transitions. Word has length 27 [2021-01-06 11:36:34,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:36:34,528 INFO L481 AbstractCegarLoop]: Abstraction has 2053 states and 3411 transitions. [2021-01-06 11:36:34,528 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:36:34,528 INFO L276 IsEmpty]: Start isEmpty. Operand 2053 states and 3411 transitions. [2021-01-06 11:36:34,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-01-06 11:36:34,530 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:36:34,531 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] [2021-01-06 11:36:34,531 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-01-06 11:36:34,531 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:36:34,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:36:34,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1367277855, now seen corresponding path program 1 times [2021-01-06 11:36:34,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:36:34,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814928488] [2021-01-06 11:36:34,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:36:34,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:36:34,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:36:34,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814928488] [2021-01-06 11:36:34,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:36:34,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:36:34,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021356810] [2021-01-06 11:36:34,578 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:36:34,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:36:34,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:36:34,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:34,579 INFO L87 Difference]: Start difference. First operand 2053 states and 3411 transitions. Second operand 3 states. [2021-01-06 11:36:34,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:36:34,632 INFO L93 Difference]: Finished difference Result 4873 states and 8149 transitions. [2021-01-06 11:36:34,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:36:34,633 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2021-01-06 11:36:34,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:36:34,647 INFO L225 Difference]: With dead ends: 4873 [2021-01-06 11:36:34,647 INFO L226 Difference]: Without dead ends: 2855 [2021-01-06 11:36:34,651 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:34,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2855 states. [2021-01-06 11:36:34,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2855 to 2853. [2021-01-06 11:36:34,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2853 states. [2021-01-06 11:36:34,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2853 states to 2853 states and 4739 transitions. [2021-01-06 11:36:34,735 INFO L78 Accepts]: Start accepts. Automaton has 2853 states and 4739 transitions. Word has length 27 [2021-01-06 11:36:34,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:36:34,735 INFO L481 AbstractCegarLoop]: Abstraction has 2853 states and 4739 transitions. [2021-01-06 11:36:34,735 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:36:34,735 INFO L276 IsEmpty]: Start isEmpty. Operand 2853 states and 4739 transitions. [2021-01-06 11:36:34,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-01-06 11:36:34,738 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:36:34,739 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] [2021-01-06 11:36:34,739 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-01-06 11:36:34,739 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:36:34,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:36:34,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1125097720, now seen corresponding path program 1 times [2021-01-06 11:36:34,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:36:34,740 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328006281] [2021-01-06 11:36:34,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:36:34,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:36:34,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:36:34,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328006281] [2021-01-06 11:36:34,765 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:36:34,765 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:36:34,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096580528] [2021-01-06 11:36:34,765 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:36:34,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:36:34,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:36:34,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:34,766 INFO L87 Difference]: Start difference. First operand 2853 states and 4739 transitions. Second operand 3 states. [2021-01-06 11:36:34,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:36:34,815 INFO L93 Difference]: Finished difference Result 4281 states and 7093 transitions. [2021-01-06 11:36:34,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:36:34,816 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2021-01-06 11:36:34,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:36:34,831 INFO L225 Difference]: With dead ends: 4281 [2021-01-06 11:36:34,831 INFO L226 Difference]: Without dead ends: 2887 [2021-01-06 11:36:34,834 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:34,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2887 states. [2021-01-06 11:36:34,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2887 to 2885. [2021-01-06 11:36:34,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2885 states. [2021-01-06 11:36:34,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2885 states to 2885 states and 4739 transitions. [2021-01-06 11:36:34,916 INFO L78 Accepts]: Start accepts. Automaton has 2885 states and 4739 transitions. Word has length 28 [2021-01-06 11:36:34,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:36:34,916 INFO L481 AbstractCegarLoop]: Abstraction has 2885 states and 4739 transitions. [2021-01-06 11:36:34,917 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:36:34,917 INFO L276 IsEmpty]: Start isEmpty. Operand 2885 states and 4739 transitions. [2021-01-06 11:36:34,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-01-06 11:36:34,920 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:36:34,920 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] [2021-01-06 11:36:34,920 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-01-06 11:36:34,920 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:36:34,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:36:34,921 INFO L82 PathProgramCache]: Analyzing trace with hash -563846022, now seen corresponding path program 1 times [2021-01-06 11:36:34,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:36:34,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041416114] [2021-01-06 11:36:34,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:36:34,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:36:34,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:36:34,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041416114] [2021-01-06 11:36:34,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:36:34,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:36:34,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29515421] [2021-01-06 11:36:34,969 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:36:34,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:36:34,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:36:34,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:34,972 INFO L87 Difference]: Start difference. First operand 2885 states and 4739 transitions. Second operand 3 states. [2021-01-06 11:36:35,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:36:35,067 INFO L93 Difference]: Finished difference Result 5257 states and 8805 transitions. [2021-01-06 11:36:35,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:36:35,068 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2021-01-06 11:36:35,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:36:35,092 INFO L225 Difference]: With dead ends: 5257 [2021-01-06 11:36:35,092 INFO L226 Difference]: Without dead ends: 5255 [2021-01-06 11:36:35,095 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:35,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5255 states. [2021-01-06 11:36:35,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5255 to 4101. [2021-01-06 11:36:35,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4101 states. [2021-01-06 11:36:35,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4101 states to 4101 states and 6563 transitions. [2021-01-06 11:36:35,227 INFO L78 Accepts]: Start accepts. Automaton has 4101 states and 6563 transitions. Word has length 28 [2021-01-06 11:36:35,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:36:35,227 INFO L481 AbstractCegarLoop]: Abstraction has 4101 states and 6563 transitions. [2021-01-06 11:36:35,227 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:36:35,227 INFO L276 IsEmpty]: Start isEmpty. Operand 4101 states and 6563 transitions. [2021-01-06 11:36:35,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-01-06 11:36:35,233 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:36:35,233 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] [2021-01-06 11:36:35,233 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-01-06 11:36:35,234 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:36:35,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:36:35,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1736976568, now seen corresponding path program 1 times [2021-01-06 11:36:35,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:36:35,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818364299] [2021-01-06 11:36:35,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:36:35,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:36:35,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:36:35,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818364299] [2021-01-06 11:36:35,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:36:35,276 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:36:35,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222348578] [2021-01-06 11:36:35,278 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:36:35,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:36:35,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:36:35,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:35,279 INFO L87 Difference]: Start difference. First operand 4101 states and 6563 transitions. Second operand 3 states. [2021-01-06 11:36:35,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:36:35,391 INFO L93 Difference]: Finished difference Result 9673 states and 15589 transitions. [2021-01-06 11:36:35,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:36:35,392 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2021-01-06 11:36:35,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:36:35,428 INFO L225 Difference]: With dead ends: 9673 [2021-01-06 11:36:35,429 INFO L226 Difference]: Without dead ends: 5639 [2021-01-06 11:36:35,435 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:35,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5639 states. [2021-01-06 11:36:35,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5639 to 5637. [2021-01-06 11:36:35,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5637 states. [2021-01-06 11:36:35,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5637 states to 5637 states and 9027 transitions. [2021-01-06 11:36:35,645 INFO L78 Accepts]: Start accepts. Automaton has 5637 states and 9027 transitions. Word has length 28 [2021-01-06 11:36:35,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:36:35,645 INFO L481 AbstractCegarLoop]: Abstraction has 5637 states and 9027 transitions. [2021-01-06 11:36:35,645 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:36:35,646 INFO L276 IsEmpty]: Start isEmpty. Operand 5637 states and 9027 transitions. [2021-01-06 11:36:35,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-01-06 11:36:35,654 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:36:35,655 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] [2021-01-06 11:36:35,655 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-01-06 11:36:35,655 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:36:35,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:36:35,656 INFO L82 PathProgramCache]: Analyzing trace with hash -299143724, now seen corresponding path program 1 times [2021-01-06 11:36:35,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:36:35,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061632436] [2021-01-06 11:36:35,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:36:35,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:36:35,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:36:35,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061632436] [2021-01-06 11:36:35,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:36:35,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:36:35,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433546394] [2021-01-06 11:36:35,688 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:36:35,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:36:35,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:36:35,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:35,689 INFO L87 Difference]: Start difference. First operand 5637 states and 9027 transitions. Second operand 3 states. [2021-01-06 11:36:35,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:36:35,765 INFO L93 Difference]: Finished difference Result 8457 states and 13509 transitions. [2021-01-06 11:36:35,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:36:35,766 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2021-01-06 11:36:35,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:36:35,779 INFO L225 Difference]: With dead ends: 8457 [2021-01-06 11:36:35,779 INFO L226 Difference]: Without dead ends: 5703 [2021-01-06 11:36:35,785 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:35,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5703 states. [2021-01-06 11:36:35,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5703 to 5701. [2021-01-06 11:36:35,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5701 states. [2021-01-06 11:36:36,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5701 states to 5701 states and 9027 transitions. [2021-01-06 11:36:36,017 INFO L78 Accepts]: Start accepts. Automaton has 5701 states and 9027 transitions. Word has length 29 [2021-01-06 11:36:36,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:36:36,018 INFO L481 AbstractCegarLoop]: Abstraction has 5701 states and 9027 transitions. [2021-01-06 11:36:36,018 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:36:36,018 INFO L276 IsEmpty]: Start isEmpty. Operand 5701 states and 9027 transitions. [2021-01-06 11:36:36,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-01-06 11:36:36,025 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:36:36,025 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 11:36:36,027 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-01-06 11:36:36,027 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:36:36,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:36:36,028 INFO L82 PathProgramCache]: Analyzing trace with hash -1988087466, now seen corresponding path program 1 times [2021-01-06 11:36:36,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:36:36,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638362425] [2021-01-06 11:36:36,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:36:36,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:36:36,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:36:36,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638362425] [2021-01-06 11:36:36,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:36:36,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:36:36,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489532673] [2021-01-06 11:36:36,063 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:36:36,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:36:36,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:36:36,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:36,064 INFO L87 Difference]: Start difference. First operand 5701 states and 9027 transitions. Second operand 3 states. [2021-01-06 11:36:36,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:36:36,277 INFO L93 Difference]: Finished difference Result 10249 states and 16581 transitions. [2021-01-06 11:36:36,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:36:36,278 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2021-01-06 11:36:36,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:36:36,299 INFO L225 Difference]: With dead ends: 10249 [2021-01-06 11:36:36,299 INFO L226 Difference]: Without dead ends: 10247 [2021-01-06 11:36:36,302 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:36,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10247 states. [2021-01-06 11:36:36,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10247 to 8197. [2021-01-06 11:36:36,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8197 states. [2021-01-06 11:36:36,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8197 states to 8197 states and 12611 transitions. [2021-01-06 11:36:36,497 INFO L78 Accepts]: Start accepts. Automaton has 8197 states and 12611 transitions. Word has length 29 [2021-01-06 11:36:36,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:36:36,498 INFO L481 AbstractCegarLoop]: Abstraction has 8197 states and 12611 transitions. [2021-01-06 11:36:36,498 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:36:36,498 INFO L276 IsEmpty]: Start isEmpty. Operand 8197 states and 12611 transitions. [2021-01-06 11:36:36,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-01-06 11:36:36,542 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:36:36,542 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] [2021-01-06 11:36:36,542 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-01-06 11:36:36,542 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:36:36,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:36:36,543 INFO L82 PathProgramCache]: Analyzing trace with hash 312735124, now seen corresponding path program 1 times [2021-01-06 11:36:36,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:36:36,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86180413] [2021-01-06 11:36:36,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:36:36,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:36:36,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:36:36,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86180413] [2021-01-06 11:36:36,567 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:36:36,567 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:36:36,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852500175] [2021-01-06 11:36:36,567 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:36:36,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:36:36,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:36:36,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:36,568 INFO L87 Difference]: Start difference. First operand 8197 states and 12611 transitions. Second operand 3 states. [2021-01-06 11:36:36,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:36:36,714 INFO L93 Difference]: Finished difference Result 19209 states and 29765 transitions. [2021-01-06 11:36:36,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:36:36,714 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2021-01-06 11:36:36,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:36:36,739 INFO L225 Difference]: With dead ends: 19209 [2021-01-06 11:36:36,739 INFO L226 Difference]: Without dead ends: 11143 [2021-01-06 11:36:36,753 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:36,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11143 states. [2021-01-06 11:36:37,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11143 to 11141. [2021-01-06 11:36:37,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11141 states. [2021-01-06 11:36:37,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11141 states to 11141 states and 17155 transitions. [2021-01-06 11:36:37,064 INFO L78 Accepts]: Start accepts. Automaton has 11141 states and 17155 transitions. Word has length 29 [2021-01-06 11:36:37,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:36:37,064 INFO L481 AbstractCegarLoop]: Abstraction has 11141 states and 17155 transitions. [2021-01-06 11:36:37,064 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:36:37,064 INFO L276 IsEmpty]: Start isEmpty. Operand 11141 states and 17155 transitions. [2021-01-06 11:36:37,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-01-06 11:36:37,076 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:36:37,077 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] [2021-01-06 11:36:37,077 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-01-06 11:36:37,077 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:36:37,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:36:37,078 INFO L82 PathProgramCache]: Analyzing trace with hash -1500955187, now seen corresponding path program 1 times [2021-01-06 11:36:37,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:36:37,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673379209] [2021-01-06 11:36:37,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:36:37,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:36:37,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:36:37,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673379209] [2021-01-06 11:36:37,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:36:37,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:36:37,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235388291] [2021-01-06 11:36:37,110 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:36:37,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:36:37,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:36:37,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:37,111 INFO L87 Difference]: Start difference. First operand 11141 states and 17155 transitions. Second operand 3 states. [2021-01-06 11:36:37,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:36:37,320 INFO L93 Difference]: Finished difference Result 16713 states and 25669 transitions. [2021-01-06 11:36:37,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:36:37,321 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2021-01-06 11:36:37,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:36:37,351 INFO L225 Difference]: With dead ends: 16713 [2021-01-06 11:36:37,351 INFO L226 Difference]: Without dead ends: 11271 [2021-01-06 11:36:37,364 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:37,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11271 states. [2021-01-06 11:36:37,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11271 to 11269. [2021-01-06 11:36:37,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11269 states. [2021-01-06 11:36:37,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11269 states to 11269 states and 17155 transitions. [2021-01-06 11:36:37,772 INFO L78 Accepts]: Start accepts. Automaton has 11269 states and 17155 transitions. Word has length 30 [2021-01-06 11:36:37,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:36:37,772 INFO L481 AbstractCegarLoop]: Abstraction has 11269 states and 17155 transitions. [2021-01-06 11:36:37,772 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:36:37,772 INFO L276 IsEmpty]: Start isEmpty. Operand 11269 states and 17155 transitions. [2021-01-06 11:36:37,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-01-06 11:36:37,785 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:36:37,785 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] [2021-01-06 11:36:37,785 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-01-06 11:36:37,786 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:36:37,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:36:37,786 INFO L82 PathProgramCache]: Analyzing trace with hash 1105068367, now seen corresponding path program 1 times [2021-01-06 11:36:37,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:36:37,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71839398] [2021-01-06 11:36:37,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:36:37,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:36:37,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:36:37,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71839398] [2021-01-06 11:36:37,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:36:37,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:36:37,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880179771] [2021-01-06 11:36:37,817 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:36:37,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:36:37,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:36:37,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:37,822 INFO L87 Difference]: Start difference. First operand 11269 states and 17155 transitions. Second operand 3 states. [2021-01-06 11:36:38,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:36:38,030 INFO L93 Difference]: Finished difference Result 19977 states and 31109 transitions. [2021-01-06 11:36:38,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:36:38,031 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2021-01-06 11:36:38,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:36:38,079 INFO L225 Difference]: With dead ends: 19977 [2021-01-06 11:36:38,079 INFO L226 Difference]: Without dead ends: 19975 [2021-01-06 11:36:38,088 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:38,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19975 states. [2021-01-06 11:36:38,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19975 to 16389. [2021-01-06 11:36:38,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16389 states. [2021-01-06 11:36:38,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16389 states to 16389 states and 24195 transitions. [2021-01-06 11:36:38,670 INFO L78 Accepts]: Start accepts. Automaton has 16389 states and 24195 transitions. Word has length 30 [2021-01-06 11:36:38,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:36:38,670 INFO L481 AbstractCegarLoop]: Abstraction has 16389 states and 24195 transitions. [2021-01-06 11:36:38,670 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:36:38,670 INFO L276 IsEmpty]: Start isEmpty. Operand 16389 states and 24195 transitions. [2021-01-06 11:36:38,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-01-06 11:36:38,691 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:36:38,692 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] [2021-01-06 11:36:38,692 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-01-06 11:36:38,692 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:36:38,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:36:38,692 INFO L82 PathProgramCache]: Analyzing trace with hash -889076339, now seen corresponding path program 1 times [2021-01-06 11:36:38,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:36:38,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474248064] [2021-01-06 11:36:38,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:36:38,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:36:38,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:36:38,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474248064] [2021-01-06 11:36:38,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:36:38,718 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:36:38,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221693049] [2021-01-06 11:36:38,719 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:36:38,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:36:38,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:36:38,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:38,720 INFO L87 Difference]: Start difference. First operand 16389 states and 24195 transitions. Second operand 3 states. [2021-01-06 11:36:39,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:36:39,001 INFO L93 Difference]: Finished difference Result 38153 states and 56709 transitions. [2021-01-06 11:36:39,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:36:39,001 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2021-01-06 11:36:39,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:36:39,047 INFO L225 Difference]: With dead ends: 38153 [2021-01-06 11:36:39,047 INFO L226 Difference]: Without dead ends: 22023 [2021-01-06 11:36:39,071 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:39,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22023 states. [2021-01-06 11:36:39,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22023 to 22021. [2021-01-06 11:36:39,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22021 states. [2021-01-06 11:36:39,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22021 states to 22021 states and 32515 transitions. [2021-01-06 11:36:39,811 INFO L78 Accepts]: Start accepts. Automaton has 22021 states and 32515 transitions. Word has length 30 [2021-01-06 11:36:39,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:36:39,811 INFO L481 AbstractCegarLoop]: Abstraction has 22021 states and 32515 transitions. [2021-01-06 11:36:39,811 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:36:39,812 INFO L276 IsEmpty]: Start isEmpty. Operand 22021 states and 32515 transitions. [2021-01-06 11:36:39,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-01-06 11:36:39,834 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:36:39,834 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 11:36:39,834 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-01-06 11:36:39,834 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:36:39,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:36:39,835 INFO L82 PathProgramCache]: Analyzing trace with hash -102404535, now seen corresponding path program 1 times [2021-01-06 11:36:39,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:36:39,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476088274] [2021-01-06 11:36:39,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:36:39,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:36:39,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:36:39,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476088274] [2021-01-06 11:36:39,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:36:39,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:36:39,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192440805] [2021-01-06 11:36:39,865 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:36:39,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:36:39,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:36:39,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:39,866 INFO L87 Difference]: Start difference. First operand 22021 states and 32515 transitions. Second operand 3 states. [2021-01-06 11:36:40,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:36:40,259 INFO L93 Difference]: Finished difference Result 33033 states and 48645 transitions. [2021-01-06 11:36:40,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:36:40,260 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2021-01-06 11:36:40,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:36:40,315 INFO L225 Difference]: With dead ends: 33033 [2021-01-06 11:36:40,315 INFO L226 Difference]: Without dead ends: 22279 [2021-01-06 11:36:40,334 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:40,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22279 states. [2021-01-06 11:36:40,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22279 to 22277. [2021-01-06 11:36:40,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22277 states. [2021-01-06 11:36:40,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22277 states to 22277 states and 32515 transitions. [2021-01-06 11:36:40,949 INFO L78 Accepts]: Start accepts. Automaton has 22277 states and 32515 transitions. Word has length 31 [2021-01-06 11:36:40,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:36:40,949 INFO L481 AbstractCegarLoop]: Abstraction has 22277 states and 32515 transitions. [2021-01-06 11:36:40,949 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:36:40,949 INFO L276 IsEmpty]: Start isEmpty. Operand 22277 states and 32515 transitions. [2021-01-06 11:36:40,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-01-06 11:36:40,977 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:36:40,978 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] [2021-01-06 11:36:40,978 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-01-06 11:36:40,978 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:36:40,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:36:40,978 INFO L82 PathProgramCache]: Analyzing trace with hash -1791348277, now seen corresponding path program 1 times [2021-01-06 11:36:40,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:36:40,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883435668] [2021-01-06 11:36:40,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:36:40,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:36:41,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:36:41,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883435668] [2021-01-06 11:36:41,021 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:36:41,021 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:36:41,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207973458] [2021-01-06 11:36:41,022 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:36:41,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:36:41,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:36:41,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:41,023 INFO L87 Difference]: Start difference. First operand 22277 states and 32515 transitions. Second operand 3 states. [2021-01-06 11:36:41,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:36:41,613 INFO L93 Difference]: Finished difference Result 38921 states and 58117 transitions. [2021-01-06 11:36:41,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:36:41,614 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2021-01-06 11:36:41,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:36:41,781 INFO L225 Difference]: With dead ends: 38921 [2021-01-06 11:36:41,781 INFO L226 Difference]: Without dead ends: 38919 [2021-01-06 11:36:41,789 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:41,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38919 states. [2021-01-06 11:36:42,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38919 to 32773. [2021-01-06 11:36:42,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32773 states. [2021-01-06 11:36:42,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32773 states to 32773 states and 46339 transitions. [2021-01-06 11:36:42,491 INFO L78 Accepts]: Start accepts. Automaton has 32773 states and 46339 transitions. Word has length 31 [2021-01-06 11:36:42,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:36:42,492 INFO L481 AbstractCegarLoop]: Abstraction has 32773 states and 46339 transitions. [2021-01-06 11:36:42,492 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:36:42,492 INFO L276 IsEmpty]: Start isEmpty. Operand 32773 states and 46339 transitions. [2021-01-06 11:36:42,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-01-06 11:36:42,527 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:36:42,527 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] [2021-01-06 11:36:42,527 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-01-06 11:36:42,528 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:36:42,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:36:42,528 INFO L82 PathProgramCache]: Analyzing trace with hash 509474313, now seen corresponding path program 1 times [2021-01-06 11:36:42,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:36:42,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949270822] [2021-01-06 11:36:42,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:36:42,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:36:42,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:36:42,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949270822] [2021-01-06 11:36:42,555 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:36:42,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:36:42,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357234682] [2021-01-06 11:36:42,556 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:36:42,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:36:42,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:36:42,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:42,557 INFO L87 Difference]: Start difference. First operand 32773 states and 46339 transitions. Second operand 3 states. [2021-01-06 11:36:43,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:36:43,306 INFO L93 Difference]: Finished difference Result 75785 states and 107781 transitions. [2021-01-06 11:36:43,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:36:43,307 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2021-01-06 11:36:43,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:36:43,410 INFO L225 Difference]: With dead ends: 75785 [2021-01-06 11:36:43,411 INFO L226 Difference]: Without dead ends: 43527 [2021-01-06 11:36:43,448 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:43,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43527 states. [2021-01-06 11:36:44,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43527 to 43525. [2021-01-06 11:36:44,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43525 states. [2021-01-06 11:36:44,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43525 states to 43525 states and 61443 transitions. [2021-01-06 11:36:44,646 INFO L78 Accepts]: Start accepts. Automaton has 43525 states and 61443 transitions. Word has length 31 [2021-01-06 11:36:44,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:36:44,647 INFO L481 AbstractCegarLoop]: Abstraction has 43525 states and 61443 transitions. [2021-01-06 11:36:44,647 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:36:44,647 INFO L276 IsEmpty]: Start isEmpty. Operand 43525 states and 61443 transitions. [2021-01-06 11:36:44,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-01-06 11:36:44,676 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:36:44,676 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] [2021-01-06 11:36:44,676 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-01-06 11:36:44,677 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:36:44,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:36:44,677 INFO L82 PathProgramCache]: Analyzing trace with hash 302993058, now seen corresponding path program 1 times [2021-01-06 11:36:44,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:36:44,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823884991] [2021-01-06 11:36:44,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:36:44,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:36:44,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:36:44,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823884991] [2021-01-06 11:36:44,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:36:44,700 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:36:44,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90055150] [2021-01-06 11:36:44,700 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:36:44,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:36:44,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:36:44,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:44,701 INFO L87 Difference]: Start difference. First operand 43525 states and 61443 transitions. Second operand 3 states. [2021-01-06 11:36:45,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:36:45,327 INFO L93 Difference]: Finished difference Result 65289 states and 91909 transitions. [2021-01-06 11:36:45,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:36:45,328 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2021-01-06 11:36:45,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:36:45,390 INFO L225 Difference]: With dead ends: 65289 [2021-01-06 11:36:45,390 INFO L226 Difference]: Without dead ends: 44039 [2021-01-06 11:36:45,410 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:45,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44039 states. [2021-01-06 11:36:46,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44039 to 44037. [2021-01-06 11:36:46,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44037 states. [2021-01-06 11:36:46,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44037 states to 44037 states and 61443 transitions. [2021-01-06 11:36:46,719 INFO L78 Accepts]: Start accepts. Automaton has 44037 states and 61443 transitions. Word has length 32 [2021-01-06 11:36:46,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:36:46,719 INFO L481 AbstractCegarLoop]: Abstraction has 44037 states and 61443 transitions. [2021-01-06 11:36:46,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:36:46,719 INFO L276 IsEmpty]: Start isEmpty. Operand 44037 states and 61443 transitions. [2021-01-06 11:36:46,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-01-06 11:36:46,746 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:36:46,746 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] [2021-01-06 11:36:46,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-01-06 11:36:46,746 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:36:46,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:36:46,748 INFO L82 PathProgramCache]: Analyzing trace with hash -1385950684, now seen corresponding path program 1 times [2021-01-06 11:36:46,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:36:46,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295340591] [2021-01-06 11:36:46,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:36:46,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:36:46,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:36:46,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295340591] [2021-01-06 11:36:46,774 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:36:46,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:36:46,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708975678] [2021-01-06 11:36:46,775 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:36:46,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:36:46,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:36:46,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:46,776 INFO L87 Difference]: Start difference. First operand 44037 states and 61443 transitions. Second operand 3 states. [2021-01-06 11:36:47,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:36:47,837 INFO L93 Difference]: Finished difference Result 129033 states and 178181 transitions. [2021-01-06 11:36:47,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:36:47,838 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2021-01-06 11:36:47,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:36:47,945 INFO L225 Difference]: With dead ends: 129033 [2021-01-06 11:36:47,946 INFO L226 Difference]: Without dead ends: 86023 [2021-01-06 11:36:47,988 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:48,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86023 states. [2021-01-06 11:36:49,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86023 to 86021. [2021-01-06 11:36:49,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86021 states. [2021-01-06 11:36:49,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86021 states to 86021 states and 116739 transitions. [2021-01-06 11:36:49,794 INFO L78 Accepts]: Start accepts. Automaton has 86021 states and 116739 transitions. Word has length 32 [2021-01-06 11:36:49,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:36:49,795 INFO L481 AbstractCegarLoop]: Abstraction has 86021 states and 116739 transitions. [2021-01-06 11:36:49,795 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:36:49,795 INFO L276 IsEmpty]: Start isEmpty. Operand 86021 states and 116739 transitions. [2021-01-06 11:36:49,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-01-06 11:36:49,847 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:36:49,847 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] [2021-01-06 11:36:49,847 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-01-06 11:36:49,848 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:36:49,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:36:49,848 INFO L82 PathProgramCache]: Analyzing trace with hash 608194022, now seen corresponding path program 1 times [2021-01-06 11:36:49,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:36:49,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545392869] [2021-01-06 11:36:49,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:36:49,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:36:49,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:36:49,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545392869] [2021-01-06 11:36:49,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:36:49,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:36:49,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852176240] [2021-01-06 11:36:49,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:36:49,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:36:49,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:36:49,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:49,872 INFO L87 Difference]: Start difference. First operand 86021 states and 116739 transitions. Second operand 3 states. [2021-01-06 11:36:50,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:36:50,904 INFO L93 Difference]: Finished difference Result 96265 states and 135173 transitions. [2021-01-06 11:36:50,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:36:50,904 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2021-01-06 11:36:50,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:36:51,014 INFO L225 Difference]: With dead ends: 96265 [2021-01-06 11:36:51,014 INFO L226 Difference]: Without dead ends: 96263 [2021-01-06 11:36:51,033 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:51,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96263 states. [2021-01-06 11:36:52,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96263 to 86021. [2021-01-06 11:36:52,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86021 states. [2021-01-06 11:36:52,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86021 states to 86021 states and 115715 transitions. [2021-01-06 11:36:52,764 INFO L78 Accepts]: Start accepts. Automaton has 86021 states and 115715 transitions. Word has length 32 [2021-01-06 11:36:52,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:36:52,764 INFO L481 AbstractCegarLoop]: Abstraction has 86021 states and 115715 transitions. [2021-01-06 11:36:52,764 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:36:52,764 INFO L276 IsEmpty]: Start isEmpty. Operand 86021 states and 115715 transitions. [2021-01-06 11:36:52,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-01-06 11:36:52,837 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:36:52,837 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] [2021-01-06 11:36:52,837 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-01-06 11:36:52,837 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:36:52,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:36:52,838 INFO L82 PathProgramCache]: Analyzing trace with hash -14583106, now seen corresponding path program 1 times [2021-01-06 11:36:52,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:36:52,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824100672] [2021-01-06 11:36:52,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:36:52,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:36:52,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:36:52,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824100672] [2021-01-06 11:36:52,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:36:52,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:36:52,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096789445] [2021-01-06 11:36:52,863 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:36:52,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:36:52,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:36:52,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:52,864 INFO L87 Difference]: Start difference. First operand 86021 states and 115715 transitions. Second operand 3 states. [2021-01-06 11:36:54,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:36:54,510 INFO L93 Difference]: Finished difference Result 146441 states and 200709 transitions. [2021-01-06 11:36:54,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:36:54,511 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2021-01-06 11:36:54,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:36:54,852 INFO L225 Difference]: With dead ends: 146441 [2021-01-06 11:36:54,853 INFO L226 Difference]: Without dead ends: 146439 [2021-01-06 11:36:54,881 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:54,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146439 states. [2021-01-06 11:36:57,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146439 to 130053. [2021-01-06 11:36:57,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130053 states. [2021-01-06 11:36:57,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130053 states to 130053 states and 169987 transitions. [2021-01-06 11:36:57,309 INFO L78 Accepts]: Start accepts. Automaton has 130053 states and 169987 transitions. Word has length 33 [2021-01-06 11:36:57,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:36:57,310 INFO L481 AbstractCegarLoop]: Abstraction has 130053 states and 169987 transitions. [2021-01-06 11:36:57,310 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:36:57,310 INFO L276 IsEmpty]: Start isEmpty. Operand 130053 states and 169987 transitions. [2021-01-06 11:36:57,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-01-06 11:36:57,396 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:36:57,397 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] [2021-01-06 11:36:57,397 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-01-06 11:36:57,397 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:36:57,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:36:57,397 INFO L82 PathProgramCache]: Analyzing trace with hash -2008727812, now seen corresponding path program 1 times [2021-01-06 11:36:57,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:36:57,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869216171] [2021-01-06 11:36:57,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:36:57,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:36:57,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:36:57,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869216171] [2021-01-06 11:36:57,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:36:57,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:36:57,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649814551] [2021-01-06 11:36:57,431 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:36:57,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:36:57,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:36:57,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:57,432 INFO L87 Difference]: Start difference. First operand 130053 states and 169987 transitions. Second operand 3 states. [2021-01-06 11:36:59,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:36:59,632 INFO L93 Difference]: Finished difference Result 297993 states and 391173 transitions. [2021-01-06 11:36:59,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:36:59,633 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2021-01-06 11:36:59,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:36:59,853 INFO L225 Difference]: With dead ends: 297993 [2021-01-06 11:36:59,853 INFO L226 Difference]: Without dead ends: 168967 [2021-01-06 11:36:59,939 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:37:00,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168967 states. [2021-01-06 11:37:03,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168967 to 168965. [2021-01-06 11:37:03,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168965 states. [2021-01-06 11:37:03,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168965 states to 168965 states and 219139 transitions. [2021-01-06 11:37:03,638 INFO L78 Accepts]: Start accepts. Automaton has 168965 states and 219139 transitions. Word has length 33 [2021-01-06 11:37:03,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:37:03,638 INFO L481 AbstractCegarLoop]: Abstraction has 168965 states and 219139 transitions. [2021-01-06 11:37:03,638 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:37:03,638 INFO L276 IsEmpty]: Start isEmpty. Operand 168965 states and 219139 transitions. [2021-01-06 11:37:03,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-01-06 11:37:03,709 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:37:03,710 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] [2021-01-06 11:37:03,710 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-01-06 11:37:03,710 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:37:03,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:37:03,710 INFO L82 PathProgramCache]: Analyzing trace with hash -451860807, now seen corresponding path program 1 times [2021-01-06 11:37:03,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:37:03,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314157228] [2021-01-06 11:37:03,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:37:03,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:37:03,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:37:03,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314157228] [2021-01-06 11:37:03,757 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:37:03,757 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:37:03,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680239356] [2021-01-06 11:37:03,757 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:37:03,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:37:03,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:37:03,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:37:03,758 INFO L87 Difference]: Start difference. First operand 168965 states and 219139 transitions. Second operand 3 states. [2021-01-06 11:37:05,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:37:05,509 INFO L93 Difference]: Finished difference Result 254985 states and 330757 transitions. [2021-01-06 11:37:05,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:37:05,510 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2021-01-06 11:37:05,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:37:05,745 INFO L225 Difference]: With dead ends: 254985 [2021-01-06 11:37:05,746 INFO L226 Difference]: Without dead ends: 172039 [2021-01-06 11:37:05,823 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:37:05,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172039 states. [2021-01-06 11:37:08,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172039 to 172037. [2021-01-06 11:37:08,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172037 states. [2021-01-06 11:37:09,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172037 states to 172037 states and 221187 transitions. [2021-01-06 11:37:09,134 INFO L78 Accepts]: Start accepts. Automaton has 172037 states and 221187 transitions. Word has length 34 [2021-01-06 11:37:09,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:37:09,134 INFO L481 AbstractCegarLoop]: Abstraction has 172037 states and 221187 transitions. [2021-01-06 11:37:09,135 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:37:09,135 INFO L276 IsEmpty]: Start isEmpty. Operand 172037 states and 221187 transitions. [2021-01-06 11:37:09,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-01-06 11:37:09,201 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:37:09,201 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] [2021-01-06 11:37:09,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-01-06 11:37:09,201 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:37:09,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:37:09,202 INFO L82 PathProgramCache]: Analyzing trace with hash -2140804549, now seen corresponding path program 1 times [2021-01-06 11:37:09,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:37:09,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479837945] [2021-01-06 11:37:09,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:37:09,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:37:09,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:37:09,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479837945] [2021-01-06 11:37:09,222 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:37:09,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:37:09,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678491208] [2021-01-06 11:37:09,223 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:37:09,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:37:09,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:37:09,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:37:09,224 INFO L87 Difference]: Start difference. First operand 172037 states and 221187 transitions. Second operand 3 states. [2021-01-06 11:37:11,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:37:11,838 INFO L93 Difference]: Finished difference Result 286729 states and 372741 transitions. [2021-01-06 11:37:11,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:37:11,841 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2021-01-06 11:37:11,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:37:12,207 INFO L225 Difference]: With dead ends: 286729 [2021-01-06 11:37:12,207 INFO L226 Difference]: Without dead ends: 286727 [2021-01-06 11:37:12,257 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:37:12,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286727 states. [2021-01-06 11:37:16,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286727 to 262149. [2021-01-06 11:37:16,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262149 states. [2021-01-06 11:37:16,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262149 states to 262149 states and 327683 transitions. [2021-01-06 11:37:16,883 INFO L78 Accepts]: Start accepts. Automaton has 262149 states and 327683 transitions. Word has length 34 [2021-01-06 11:37:16,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:37:16,883 INFO L481 AbstractCegarLoop]: Abstraction has 262149 states and 327683 transitions. [2021-01-06 11:37:16,883 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:37:16,884 INFO L276 IsEmpty]: Start isEmpty. Operand 262149 states and 327683 transitions. [2021-01-06 11:37:17,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-01-06 11:37:17,039 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:37:17,039 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] [2021-01-06 11:37:17,039 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-01-06 11:37:17,040 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:37:17,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:37:17,040 INFO L82 PathProgramCache]: Analyzing trace with hash 160018041, now seen corresponding path program 1 times [2021-01-06 11:37:17,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:37:17,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903561704] [2021-01-06 11:37:17,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:37:17,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:37:17,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:37:17,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903561704] [2021-01-06 11:37:17,073 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:37:17,074 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:37:17,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248975733] [2021-01-06 11:37:17,074 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:37:17,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:37:17,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:37:17,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:37:17,075 INFO L87 Difference]: Start difference. First operand 262149 states and 327683 transitions. Second operand 3 states. [2021-01-06 11:37:21,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:37:21,575 INFO L93 Difference]: Finished difference Result 593929 states and 741381 transitions. [2021-01-06 11:37:21,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:37:21,576 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2021-01-06 11:37:21,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:37:22,700 INFO L225 Difference]: With dead ends: 593929 [2021-01-06 11:37:22,700 INFO L226 Difference]: Without dead ends: 335879 [2021-01-06 11:37:22,951 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:37:23,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335879 states. [2021-01-06 11:37:30,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335879 to 335877. [2021-01-06 11:37:30,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335877 states. [2021-01-06 11:37:30,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335877 states to 335877 states and 413699 transitions. [2021-01-06 11:37:30,787 INFO L78 Accepts]: Start accepts. Automaton has 335877 states and 413699 transitions. Word has length 34 [2021-01-06 11:37:30,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:37:30,787 INFO L481 AbstractCegarLoop]: Abstraction has 335877 states and 413699 transitions. [2021-01-06 11:37:30,787 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:37:30,787 INFO L276 IsEmpty]: Start isEmpty. Operand 335877 states and 413699 transitions. [2021-01-06 11:37:31,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-01-06 11:37:31,575 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:37:31,575 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] [2021-01-06 11:37:31,575 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-01-06 11:37:31,575 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:37:31,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:37:31,575 INFO L82 PathProgramCache]: Analyzing trace with hash -1940215759, now seen corresponding path program 1 times [2021-01-06 11:37:31,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:37:31,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159060981] [2021-01-06 11:37:31,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:37:31,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:37:31,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:37:31,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159060981] [2021-01-06 11:37:31,596 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:37:31,597 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:37:31,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628506240] [2021-01-06 11:37:31,597 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:37:31,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:37:31,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:37:31,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:37:31,598 INFO L87 Difference]: Start difference. First operand 335877 states and 413699 transitions. Second operand 3 states. [2021-01-06 11:37:35,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:37:35,188 INFO L93 Difference]: Finished difference Result 503817 states and 618501 transitions. [2021-01-06 11:37:35,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:37:35,189 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 35 [2021-01-06 11:37:35,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:37:35,751 INFO L225 Difference]: With dead ends: 503817 [2021-01-06 11:37:35,751 INFO L226 Difference]: Without dead ends: 339975 [2021-01-06 11:37:35,892 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:37:36,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339975 states. [2021-01-06 11:37:41,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339975 to 339973. [2021-01-06 11:37:41,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339973 states. [2021-01-06 11:37:42,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339973 states to 339973 states and 413699 transitions. [2021-01-06 11:37:42,716 INFO L78 Accepts]: Start accepts. Automaton has 339973 states and 413699 transitions. Word has length 35 [2021-01-06 11:37:42,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:37:42,716 INFO L481 AbstractCegarLoop]: Abstraction has 339973 states and 413699 transitions. [2021-01-06 11:37:42,716 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:37:42,717 INFO L276 IsEmpty]: Start isEmpty. Operand 339973 states and 413699 transitions. [2021-01-06 11:37:42,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-01-06 11:37:42,910 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:37:42,910 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] [2021-01-06 11:37:42,910 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-01-06 11:37:42,910 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:37:42,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:37:42,911 INFO L82 PathProgramCache]: Analyzing trace with hash 665807795, now seen corresponding path program 1 times [2021-01-06 11:37:42,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:37:42,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165159704] [2021-01-06 11:37:42,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:37:42,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:37:42,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:37:42,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165159704] [2021-01-06 11:37:42,953 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:37:42,953 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:37:42,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582066099] [2021-01-06 11:37:42,953 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:37:42,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:37:42,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:37:42,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:37:42,954 INFO L87 Difference]: Start difference. First operand 339973 states and 413699 transitions. Second operand 3 states. [2021-01-06 11:37:47,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:37:47,687 INFO L93 Difference]: Finished difference Result 557065 states and 679941 transitions. [2021-01-06 11:37:47,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:37:47,688 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 35 [2021-01-06 11:37:47,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:37:48,839 INFO L225 Difference]: With dead ends: 557065 [2021-01-06 11:37:48,839 INFO L226 Difference]: Without dead ends: 557063 [2021-01-06 11:37:49,005 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:37:49,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557063 states. [2021-01-06 11:37:57,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557063 to 524293. [2021-01-06 11:37:57,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 524293 states. [2021-01-06 11:38:00,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524293 states to 524293 states and 622595 transitions. [2021-01-06 11:38:00,267 INFO L78 Accepts]: Start accepts. Automaton has 524293 states and 622595 transitions. Word has length 35 [2021-01-06 11:38:00,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:38:00,268 INFO L481 AbstractCegarLoop]: Abstraction has 524293 states and 622595 transitions. [2021-01-06 11:38:00,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:38:00,268 INFO L276 IsEmpty]: Start isEmpty. Operand 524293 states and 622595 transitions. [2021-01-06 11:38:00,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-01-06 11:38:00,797 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:38:00,797 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] [2021-01-06 11:38:00,797 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-01-06 11:38:00,798 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:38:00,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:38:00,798 INFO L82 PathProgramCache]: Analyzing trace with hash -1328336911, now seen corresponding path program 1 times [2021-01-06 11:38:00,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:38:00,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028584060] [2021-01-06 11:38:00,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:38:00,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:38:00,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:38:00,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028584060] [2021-01-06 11:38:00,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:38:00,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:38:00,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645466565] [2021-01-06 11:38:00,843 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:38:00,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:38:00,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:38:00,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:38:00,844 INFO L87 Difference]: Start difference. First operand 524293 states and 622595 transitions. Second operand 3 states. [2021-01-06 11:38:10,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:38:10,540 INFO L93 Difference]: Finished difference Result 1179657 states and 1392645 transitions. [2021-01-06 11:38:10,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:38:10,554 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 35 [2021-01-06 11:38:10,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:38:11,788 INFO L225 Difference]: With dead ends: 1179657 [2021-01-06 11:38:11,788 INFO L226 Difference]: Without dead ends: 663559 [2021-01-06 11:38:12,171 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:38:13,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663559 states. [2021-01-06 11:38:25,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663559 to 663557. [2021-01-06 11:38:25,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 663557 states. [2021-01-06 11:38:28,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663557 states to 663557 states and 770051 transitions. [2021-01-06 11:38:28,791 INFO L78 Accepts]: Start accepts. Automaton has 663557 states and 770051 transitions. Word has length 35 [2021-01-06 11:38:28,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:38:28,791 INFO L481 AbstractCegarLoop]: Abstraction has 663557 states and 770051 transitions. [2021-01-06 11:38:28,791 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:38:28,791 INFO L276 IsEmpty]: Start isEmpty. Operand 663557 states and 770051 transitions. [2021-01-06 11:38:29,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-01-06 11:38:29,395 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:38:29,395 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] [2021-01-06 11:38:29,395 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-01-06 11:38:29,395 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:38:29,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:38:29,396 INFO L82 PathProgramCache]: Analyzing trace with hash -834578674, now seen corresponding path program 1 times [2021-01-06 11:38:29,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:38:29,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427178245] [2021-01-06 11:38:29,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:38:29,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:38:29,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:38:29,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427178245] [2021-01-06 11:38:29,466 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:38:29,466 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:38:29,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194985989] [2021-01-06 11:38:29,467 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:38:29,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:38:29,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:38:29,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:38:29,468 INFO L87 Difference]: Start difference. First operand 663557 states and 770051 transitions. Second operand 3 states. [2021-01-06 11:38:39,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:38:39,169 INFO L93 Difference]: Finished difference Result 995337 states and 1150981 transitions. [2021-01-06 11:38:39,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:38:39,170 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2021-01-06 11:38:39,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:38:41,027 INFO L225 Difference]: With dead ends: 995337 [2021-01-06 11:38:41,028 INFO L226 Difference]: Without dead ends: 671751 [2021-01-06 11:38:41,363 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:38:41,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671751 states. [2021-01-06 11:38:52,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671751 to 671749. [2021-01-06 11:38:52,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 671749 states. [2021-01-06 11:38:55,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671749 states to 671749 states and 770051 transitions. [2021-01-06 11:38:55,645 INFO L78 Accepts]: Start accepts. Automaton has 671749 states and 770051 transitions. Word has length 36 [2021-01-06 11:38:55,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:38:55,646 INFO L481 AbstractCegarLoop]: Abstraction has 671749 states and 770051 transitions. [2021-01-06 11:38:55,646 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:38:55,646 INFO L276 IsEmpty]: Start isEmpty. Operand 671749 states and 770051 transitions. [2021-01-06 11:38:56,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-01-06 11:38:56,784 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:38:56,784 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] [2021-01-06 11:38:56,784 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-01-06 11:38:56,785 INFO L429 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:38:56,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:38:56,785 INFO L82 PathProgramCache]: Analyzing trace with hash 1771444880, now seen corresponding path program 1 times [2021-01-06 11:38:56,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:38:56,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934606774] [2021-01-06 11:38:56,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:38:56,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:38:56,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:38:56,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934606774] [2021-01-06 11:38:56,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:38:56,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:38:56,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142555912] [2021-01-06 11:38:56,855 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:38:56,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:38:56,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:38:56,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:38:56,856 INFO L87 Difference]: Start difference. First operand 671749 states and 770051 transitions. Second operand 3 states.