/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_5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 11:36:30,790 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 11:36:30,793 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 11:36:30,841 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 11:36:30,842 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 11:36:30,847 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 11:36:30,861 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 11:36:30,866 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 11:36:30,870 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 11:36:30,877 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 11:36:30,882 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 11:36:30,884 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 11:36:30,884 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 11:36:30,886 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 11:36:30,888 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 11:36:30,890 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 11:36:30,891 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 11:36:30,896 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 11:36:30,902 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 11:36:30,905 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 11:36:30,907 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 11:36:30,910 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 11:36:30,912 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 11:36:30,914 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 11:36:30,920 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-01-06 11:36:30,920 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-01-06 11:36:30,921 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-01-06 11:36:30,926 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-01-06 11:36:30,927 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-01-06 11:36:30,928 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-01-06 11:36:30,928 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 11:36:30,929 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 11:36:30,930 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 11:36:30,931 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 11:36:30,932 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 11:36:30,932 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 11:36:30,933 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 11:36:30,933 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 11:36:30,933 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 11:36:30,934 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 11:36:30,935 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 11:36:30,936 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 11:36:30,962 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 11:36:30,963 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 11:36:30,964 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 11:36:30,964 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 11:36:30,965 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 11:36:30,965 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 11:36:30,965 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 11:36:30,965 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 11:36:30,966 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 11:36:30,966 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 11:36:30,966 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 11:36:30,966 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 11:36:30,966 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 11:36:30,966 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 11:36:30,967 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 11:36:30,967 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 11:36:30,967 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 11:36:30,967 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 11:36:30,968 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 11:36:30,968 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 11:36:30,968 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 11:36:30,968 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 11:36:30,968 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 11:36:30,969 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 11:36:30,969 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 11:36:30,969 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 11:36:31,318 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 11:36:31,348 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 11:36:31,351 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 11:36:31,353 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 11:36:31,354 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 11:36:31,355 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/locks/test_locks_5.c [2021-01-06 11:36:31,434 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/fd6a88c29/7bc15a8a8c5b4c2692b970eafd24f4dd/FLAGa2c77ddb3 [2021-01-06 11:36:31,982 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 11:36:31,983 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/locks/test_locks_5.c [2021-01-06 11:36:31,995 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/fd6a88c29/7bc15a8a8c5b4c2692b970eafd24f4dd/FLAGa2c77ddb3 [2021-01-06 11:36:32,338 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/fd6a88c29/7bc15a8a8c5b4c2692b970eafd24f4dd [2021-01-06 11:36:32,348 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 11:36:32,351 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 11:36:32,354 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 11:36:32,354 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 11:36:32,358 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 11:36:32,359 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 11:36:32" (1/1) ... [2021-01-06 11:36:32,362 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38cd3543 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:36:32, skipping insertion in model container [2021-01-06 11:36:32,362 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 11:36:32" (1/1) ... [2021-01-06 11:36:32,371 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 11:36:32,392 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[~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[~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,] [2021-01-06 11:36:32,639 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_5.c[2207,2220] [2021-01-06 11:36:32,648 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 11:36:32,657 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[~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[~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,] [2021-01-06 11:36:32,696 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_5.c[2207,2220] [2021-01-06 11:36:32,702 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 11:36:32,722 INFO L208 MainTranslator]: Completed translation [2021-01-06 11:36:32,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:36:32 WrapperNode [2021-01-06 11:36:32,723 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 11:36:32,724 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 11:36:32,725 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 11:36:32,725 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 11:36:32,733 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:36:32" (1/1) ... [2021-01-06 11:36:32,742 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:36:32" (1/1) ... [2021-01-06 11:36:32,772 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 11:36:32,777 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 11:36:32,777 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 11:36:32,778 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 11:36:32,788 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:36:32" (1/1) ... [2021-01-06 11:36:32,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:36:32" (1/1) ... [2021-01-06 11:36:32,799 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:36:32" (1/1) ... [2021-01-06 11:36:32,799 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:36:32" (1/1) ... [2021-01-06 11:36:32,802 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:36:32" (1/1) ... [2021-01-06 11:36:32,814 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:36:32" (1/1) ... [2021-01-06 11:36:32,816 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:36:32" (1/1) ... [2021-01-06 11:36:32,818 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 11:36:32,819 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 11:36:32,819 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 11:36:32,819 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 11:36:32,820 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:36:32" (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 11:36:32,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 11:36:32,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 11:36:32,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 11:36:32,912 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 11:36:33,188 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 11:36:33,188 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-01-06 11:36:33,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 11:36:33 BoogieIcfgContainer [2021-01-06 11:36:33,190 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 11:36:33,192 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 11:36:33,192 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 11:36:33,196 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 11:36:33,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 11:36:32" (1/3) ... [2021-01-06 11:36:33,197 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74a1e09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 11:36:33, skipping insertion in model container [2021-01-06 11:36:33,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:36:32" (2/3) ... [2021-01-06 11:36:33,198 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74a1e09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 11:36:33, skipping insertion in model container [2021-01-06 11:36:33,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 11:36:33" (3/3) ... [2021-01-06 11:36:33,200 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_5.c [2021-01-06 11:36:33,207 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 11:36:33,213 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 11:36:33,265 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-01-06 11:36:33,294 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 11:36:33,295 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 11:36:33,295 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 11:36:33,295 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 11:36:33,295 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 11:36:33,295 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 11:36:33,295 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 11:36:33,296 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 11:36:33,312 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2021-01-06 11:36:33,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-01-06 11:36:33,318 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:36:33,318 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 11:36:33,319 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:36:33,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:36:33,325 INFO L82 PathProgramCache]: Analyzing trace with hash -161811697, now seen corresponding path program 1 times [2021-01-06 11:36:33,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:36:33,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800687187] [2021-01-06 11:36:33,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:36:33,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:36:33,592 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 11:36:33,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800687187] [2021-01-06 11:36:33,594 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:36:33,594 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:36:33,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375581734] [2021-01-06 11:36:33,602 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:36:33,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:36:33,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:36:33,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:33,630 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 3 states. [2021-01-06 11:36:33,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:36:33,709 INFO L93 Difference]: Finished difference Result 53 states and 85 transitions. [2021-01-06 11:36:33,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:36:33,711 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2021-01-06 11:36:33,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:36:33,726 INFO L225 Difference]: With dead ends: 53 [2021-01-06 11:36:33,726 INFO L226 Difference]: Without dead ends: 39 [2021-01-06 11:36:33,729 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 11:36:33,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-01-06 11:36:33,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 27. [2021-01-06 11:36:33,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-01-06 11:36:33,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 46 transitions. [2021-01-06 11:36:33,776 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 46 transitions. Word has length 12 [2021-01-06 11:36:33,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:36:33,777 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 46 transitions. [2021-01-06 11:36:33,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:36:33,777 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 46 transitions. [2021-01-06 11:36:33,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-01-06 11:36:33,779 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:36:33,780 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 11:36:33,783 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 11:36:33,783 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:36:33,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:36:33,788 INFO L82 PathProgramCache]: Analyzing trace with hash -971158323, now seen corresponding path program 1 times [2021-01-06 11:36:33,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:36:33,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007926702] [2021-01-06 11:36:33,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:36:33,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:36:33,903 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 11:36:33,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007926702] [2021-01-06 11:36:33,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:36:33,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:36:33,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204310823] [2021-01-06 11:36:33,908 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:36:33,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:36:33,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:36:33,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:33,913 INFO L87 Difference]: Start difference. First operand 27 states and 46 transitions. Second operand 3 states. [2021-01-06 11:36:33,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:36:33,947 INFO L93 Difference]: Finished difference Result 64 states and 109 transitions. [2021-01-06 11:36:33,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:36:33,948 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2021-01-06 11:36:33,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:36:33,950 INFO L225 Difference]: With dead ends: 64 [2021-01-06 11:36:33,951 INFO L226 Difference]: Without dead ends: 39 [2021-01-06 11:36:33,954 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 11:36:33,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-01-06 11:36:33,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2021-01-06 11:36:33,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2021-01-06 11:36:33,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 62 transitions. [2021-01-06 11:36:33,972 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 62 transitions. Word has length 12 [2021-01-06 11:36:33,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:36:33,972 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 62 transitions. [2021-01-06 11:36:33,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:36:33,973 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 62 transitions. [2021-01-06 11:36:33,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-06 11:36:33,976 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:36:33,976 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 11:36:33,976 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 11:36:33,976 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:36:33,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:36:33,979 INFO L82 PathProgramCache]: Analyzing trace with hash -720980343, now seen corresponding path program 1 times [2021-01-06 11:36:33,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:36:33,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814126389] [2021-01-06 11:36:33,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:36:34,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:36:34,071 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 11:36:34,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814126389] [2021-01-06 11:36:34,073 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:36:34,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:36:34,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569175754] [2021-01-06 11:36:34,077 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:36:34,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:36:34,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:36:34,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:34,079 INFO L87 Difference]: Start difference. First operand 37 states and 62 transitions. Second operand 3 states. [2021-01-06 11:36:34,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:36:34,094 INFO L93 Difference]: Finished difference Result 60 states and 96 transitions. [2021-01-06 11:36:34,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:36:34,095 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2021-01-06 11:36:34,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:36:34,096 INFO L225 Difference]: With dead ends: 60 [2021-01-06 11:36:34,096 INFO L226 Difference]: Without dead ends: 42 [2021-01-06 11:36:34,097 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 11:36:34,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-01-06 11:36:34,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2021-01-06 11:36:34,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2021-01-06 11:36:34,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 64 transitions. [2021-01-06 11:36:34,103 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 64 transitions. Word has length 13 [2021-01-06 11:36:34,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:36:34,103 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 64 transitions. [2021-01-06 11:36:34,103 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:36:34,104 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 64 transitions. [2021-01-06 11:36:34,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-06 11:36:34,104 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:36:34,105 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 11:36:34,105 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-06 11:36:34,105 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:36:34,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:36:34,106 INFO L82 PathProgramCache]: Analyzing trace with hash -40921973, now seen corresponding path program 1 times [2021-01-06 11:36:34,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:36:34,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374265546] [2021-01-06 11:36:34,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:36:34,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:36:34,144 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 11:36:34,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374265546] [2021-01-06 11:36:34,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:36:34,144 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:36:34,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948096502] [2021-01-06 11:36:34,145 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:36:34,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:36:34,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:36:34,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:34,147 INFO L87 Difference]: Start difference. First operand 40 states and 64 transitions. Second operand 3 states. [2021-01-06 11:36:34,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:36:34,164 INFO L93 Difference]: Finished difference Result 73 states and 117 transitions. [2021-01-06 11:36:34,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:36:34,164 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2021-01-06 11:36:34,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:36:34,166 INFO L225 Difference]: With dead ends: 73 [2021-01-06 11:36:34,166 INFO L226 Difference]: Without dead ends: 71 [2021-01-06 11:36:34,166 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 11:36:34,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-01-06 11:36:34,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 53. [2021-01-06 11:36:34,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2021-01-06 11:36:34,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 85 transitions. [2021-01-06 11:36:34,175 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 85 transitions. Word has length 13 [2021-01-06 11:36:34,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:36:34,176 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 85 transitions. [2021-01-06 11:36:34,176 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:36:34,176 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 85 transitions. [2021-01-06 11:36:34,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-06 11:36:34,177 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:36:34,177 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 11:36:34,177 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-06 11:36:34,178 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:36:34,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:36:34,178 INFO L82 PathProgramCache]: Analyzing trace with hash -850268599, now seen corresponding path program 1 times [2021-01-06 11:36:34,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:36:34,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618138270] [2021-01-06 11:36:34,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:36:34,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:36:34,232 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 11:36:34,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618138270] [2021-01-06 11:36:34,232 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:36:34,233 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:36:34,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841802084] [2021-01-06 11:36:34,233 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:36:34,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:36:34,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:36:34,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:34,237 INFO L87 Difference]: Start difference. First operand 53 states and 85 transitions. Second operand 3 states. [2021-01-06 11:36:34,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:36:34,278 INFO L93 Difference]: Finished difference Result 121 states and 195 transitions. [2021-01-06 11:36:34,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:36:34,279 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2021-01-06 11:36:34,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:36:34,281 INFO L225 Difference]: With dead ends: 121 [2021-01-06 11:36:34,281 INFO L226 Difference]: Without dead ends: 73 [2021-01-06 11:36:34,282 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 11:36:34,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-01-06 11:36:34,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 71. [2021-01-06 11:36:34,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2021-01-06 11:36:34,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 111 transitions. [2021-01-06 11:36:34,301 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 111 transitions. Word has length 13 [2021-01-06 11:36:34,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:36:34,302 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 111 transitions. [2021-01-06 11:36:34,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:36:34,302 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 111 transitions. [2021-01-06 11:36:34,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-06 11:36:34,303 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:36:34,304 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 11:36:34,304 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-06 11:36:34,304 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:36:34,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:36:34,305 INFO L82 PathProgramCache]: Analyzing trace with hash -1268365854, now seen corresponding path program 1 times [2021-01-06 11:36:34,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:36:34,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130222208] [2021-01-06 11:36:34,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:36:34,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:36:34,375 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 11:36:34,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130222208] [2021-01-06 11:36:34,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:36:34,376 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:36:34,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726745813] [2021-01-06 11:36:34,380 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:36:34,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:36:34,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:36:34,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:34,381 INFO L87 Difference]: Start difference. First operand 71 states and 111 transitions. Second operand 3 states. [2021-01-06 11:36:34,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:36:34,412 INFO L93 Difference]: Finished difference Result 108 states and 166 transitions. [2021-01-06 11:36:34,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:36:34,413 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2021-01-06 11:36:34,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:36:34,414 INFO L225 Difference]: With dead ends: 108 [2021-01-06 11:36:34,414 INFO L226 Difference]: Without dead ends: 75 [2021-01-06 11:36:34,415 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 11:36:34,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-01-06 11:36:34,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 73. [2021-01-06 11:36:34,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2021-01-06 11:36:34,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 111 transitions. [2021-01-06 11:36:34,423 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 111 transitions. Word has length 14 [2021-01-06 11:36:34,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:36:34,424 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 111 transitions. [2021-01-06 11:36:34,424 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:36:34,424 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 111 transitions. [2021-01-06 11:36:34,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-06 11:36:34,425 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:36:34,425 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 11:36:34,425 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-06 11:36:34,426 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:36:34,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:36:34,426 INFO L82 PathProgramCache]: Analyzing trace with hash -588307484, now seen corresponding path program 1 times [2021-01-06 11:36:34,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:36:34,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970914007] [2021-01-06 11:36:34,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:36:34,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:36:34,456 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 11:36:34,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970914007] [2021-01-06 11:36:34,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:36:34,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:36:34,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168478765] [2021-01-06 11:36:34,458 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:36:34,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:36:34,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:36:34,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:34,459 INFO L87 Difference]: Start difference. First operand 73 states and 111 transitions. Second operand 3 states. [2021-01-06 11:36:34,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:36:34,476 INFO L93 Difference]: Finished difference Result 201 states and 305 transitions. [2021-01-06 11:36:34,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:36:34,477 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2021-01-06 11:36:34,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:36:34,478 INFO L225 Difference]: With dead ends: 201 [2021-01-06 11:36:34,479 INFO L226 Difference]: Without dead ends: 135 [2021-01-06 11:36:34,480 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 11:36:34,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-01-06 11:36:34,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 133. [2021-01-06 11:36:34,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2021-01-06 11:36:34,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 195 transitions. [2021-01-06 11:36:34,493 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 195 transitions. Word has length 14 [2021-01-06 11:36:34,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:36:34,493 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 195 transitions. [2021-01-06 11:36:34,493 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:36:34,494 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 195 transitions. [2021-01-06 11:36:34,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-06 11:36:34,495 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:36:34,495 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 11:36:34,495 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-06 11:36:34,495 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:36:34,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:36:34,496 INFO L82 PathProgramCache]: Analyzing trace with hash 221039142, now seen corresponding path program 1 times [2021-01-06 11:36:34,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:36:34,496 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27273545] [2021-01-06 11:36:34,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:36:34,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:36:34,533 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 11:36:34,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27273545] [2021-01-06 11:36:34,534 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:36:34,534 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:36:34,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499400654] [2021-01-06 11:36:34,536 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:36:34,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:36:34,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:36:34,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:34,538 INFO L87 Difference]: Start difference. First operand 133 states and 195 transitions. Second operand 3 states. [2021-01-06 11:36:34,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:36:34,577 INFO L93 Difference]: Finished difference Result 161 states and 237 transitions. [2021-01-06 11:36:34,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:36:34,578 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2021-01-06 11:36:34,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:36:34,580 INFO L225 Difference]: With dead ends: 161 [2021-01-06 11:36:34,580 INFO L226 Difference]: Without dead ends: 159 [2021-01-06 11:36:34,581 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 11:36:34,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-01-06 11:36:34,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 133. [2021-01-06 11:36:34,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2021-01-06 11:36:34,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 191 transitions. [2021-01-06 11:36:34,604 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 191 transitions. Word has length 14 [2021-01-06 11:36:34,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:36:34,604 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 191 transitions. [2021-01-06 11:36:34,604 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:36:34,605 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 191 transitions. [2021-01-06 11:36:34,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-01-06 11:36:34,606 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:36:34,606 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 11:36:34,606 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-06 11:36:34,607 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:36:34,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:36:34,607 INFO L82 PathProgramCache]: Analyzing trace with hash -1057447170, now seen corresponding path program 1 times [2021-01-06 11:36:34,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:36:34,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12477561] [2021-01-06 11:36:34,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:36:34,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:36:34,633 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 11:36:34,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12477561] [2021-01-06 11:36:34,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:36:34,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:36:34,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228968468] [2021-01-06 11:36:34,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:36:34,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:36:34,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:36:34,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:34,636 INFO L87 Difference]: Start difference. First operand 133 states and 191 transitions. Second operand 3 states. [2021-01-06 11:36:34,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:36:34,657 INFO L93 Difference]: Finished difference Result 229 states and 329 transitions. [2021-01-06 11:36:34,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:36:34,657 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2021-01-06 11:36:34,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:36:34,660 INFO L225 Difference]: With dead ends: 229 [2021-01-06 11:36:34,660 INFO L226 Difference]: Without dead ends: 227 [2021-01-06 11:36:34,661 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 11:36:34,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2021-01-06 11:36:34,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 193. [2021-01-06 11:36:34,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2021-01-06 11:36:34,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 271 transitions. [2021-01-06 11:36:34,683 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 271 transitions. Word has length 15 [2021-01-06 11:36:34,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:36:34,683 INFO L481 AbstractCegarLoop]: Abstraction has 193 states and 271 transitions. [2021-01-06 11:36:34,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:36:34,684 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 271 transitions. [2021-01-06 11:36:34,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-01-06 11:36:34,686 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:36:34,687 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 11:36:34,687 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-01-06 11:36:34,687 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:36:34,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:36:34,688 INFO L82 PathProgramCache]: Analyzing trace with hash -1866793796, now seen corresponding path program 1 times [2021-01-06 11:36:34,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:36:34,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55369448] [2021-01-06 11:36:34,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:36:34,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:36:34,730 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 11:36:34,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55369448] [2021-01-06 11:36:34,735 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:36:34,735 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:36:34,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19109310] [2021-01-06 11:36:34,736 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:36:34,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:36:34,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:36:34,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:34,738 INFO L87 Difference]: Start difference. First operand 193 states and 271 transitions. Second operand 3 states. [2021-01-06 11:36:34,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:36:34,787 INFO L93 Difference]: Finished difference Result 437 states and 609 transitions. [2021-01-06 11:36:34,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:36:34,789 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2021-01-06 11:36:34,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:36:34,793 INFO L225 Difference]: With dead ends: 437 [2021-01-06 11:36:34,793 INFO L226 Difference]: Without dead ends: 251 [2021-01-06 11:36:34,798 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 11:36:34,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2021-01-06 11:36:34,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 249. [2021-01-06 11:36:34,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2021-01-06 11:36:34,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 331 transitions. [2021-01-06 11:36:34,842 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 331 transitions. Word has length 15 [2021-01-06 11:36:34,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:36:34,843 INFO L481 AbstractCegarLoop]: Abstraction has 249 states and 331 transitions. [2021-01-06 11:36:34,843 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:36:34,843 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 331 transitions. [2021-01-06 11:36:34,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-01-06 11:36:34,845 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:36:34,846 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 11:36:34,846 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-01-06 11:36:34,846 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:36:34,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:36:34,847 INFO L82 PathProgramCache]: Analyzing trace with hash 1579092089, now seen corresponding path program 1 times [2021-01-06 11:36:34,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:36:34,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426771056] [2021-01-06 11:36:34,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:36:34,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:36:34,874 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 11:36:34,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426771056] [2021-01-06 11:36:34,875 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:36:34,875 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:36:34,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576291923] [2021-01-06 11:36:34,876 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:36:34,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:36:34,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:36:34,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:34,877 INFO L87 Difference]: Start difference. First operand 249 states and 331 transitions. Second operand 3 states. [2021-01-06 11:36:34,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:36:34,898 INFO L93 Difference]: Finished difference Result 381 states and 505 transitions. [2021-01-06 11:36:34,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:36:34,898 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2021-01-06 11:36:34,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:36:34,900 INFO L225 Difference]: With dead ends: 381 [2021-01-06 11:36:34,900 INFO L226 Difference]: Without dead ends: 263 [2021-01-06 11:36:34,902 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 11:36:34,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2021-01-06 11:36:34,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 261. [2021-01-06 11:36:34,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2021-01-06 11:36:34,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 339 transitions. [2021-01-06 11:36:34,924 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 339 transitions. Word has length 16 [2021-01-06 11:36:34,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:36:34,924 INFO L481 AbstractCegarLoop]: Abstraction has 261 states and 339 transitions. [2021-01-06 11:36:34,925 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:36:34,925 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 339 transitions. [2021-01-06 11:36:34,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-01-06 11:36:34,927 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:36:34,927 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 11:36:34,928 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-01-06 11:36:34,928 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:36:34,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:36:34,928 INFO L82 PathProgramCache]: Analyzing trace with hash -2035816837, now seen corresponding path program 1 times [2021-01-06 11:36:34,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:36:34,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842976029] [2021-01-06 11:36:34,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:36:34,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:36:34,953 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 11:36:34,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842976029] [2021-01-06 11:36:34,954 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:36:34,954 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:36:34,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866677834] [2021-01-06 11:36:34,955 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:36:34,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:36:34,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:36:34,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:34,956 INFO L87 Difference]: Start difference. First operand 261 states and 339 transitions. Second operand 3 states. [2021-01-06 11:36:34,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:36:34,979 INFO L93 Difference]: Finished difference Result 423 states and 540 transitions. [2021-01-06 11:36:34,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:36:34,995 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2021-01-06 11:36:34,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:36:34,998 INFO L225 Difference]: With dead ends: 423 [2021-01-06 11:36:34,998 INFO L226 Difference]: Without dead ends: 421 [2021-01-06 11:36:34,999 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 11:36:35,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2021-01-06 11:36:35,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 389. [2021-01-06 11:36:35,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 389 states. [2021-01-06 11:36:35,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 491 transitions. [2021-01-06 11:36:35,016 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 491 transitions. Word has length 16 [2021-01-06 11:36:35,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:36:35,017 INFO L481 AbstractCegarLoop]: Abstraction has 389 states and 491 transitions. [2021-01-06 11:36:35,017 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:36:35,017 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 491 transitions. [2021-01-06 11:36:35,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-01-06 11:36:35,020 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:36:35,020 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 11:36:35,020 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-01-06 11:36:35,020 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:36:35,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:36:35,021 INFO L82 PathProgramCache]: Analyzing trace with hash 1449803833, now seen corresponding path program 1 times [2021-01-06 11:36:35,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:36:35,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823387456] [2021-01-06 11:36:35,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:36:35,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:36:35,063 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 11:36:35,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823387456] [2021-01-06 11:36:35,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:36:35,064 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:36:35,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200452076] [2021-01-06 11:36:35,064 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:36:35,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:36:35,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:36:35,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:35,065 INFO L87 Difference]: Start difference. First operand 389 states and 491 transitions. Second operand 3 states. [2021-01-06 11:36:35,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:36:35,101 INFO L93 Difference]: Finished difference Result 853 states and 1051 transitions. [2021-01-06 11:36:35,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:36:35,102 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2021-01-06 11:36:35,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:36:35,103 INFO L225 Difference]: With dead ends: 853 [2021-01-06 11:36:35,103 INFO L226 Difference]: Without dead ends: 0 [2021-01-06 11:36:35,116 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 11:36:35,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-01-06 11:36:35,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-01-06 11:36:35,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-01-06 11:36:35,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-01-06 11:36:35,117 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2021-01-06 11:36:35,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:36:35,118 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-01-06 11:36:35,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:36:35,119 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-01-06 11:36:35,119 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-06 11:36:35,119 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-01-06 11:36:35,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-01-06 11:36:35,146 INFO L192 CegarLoopUtils]: At program point L85-1(lines 26 90) the Hoare annotation is: true [2021-01-06 11:36:35,146 INFO L189 CegarLoopUtils]: For program point L81(line 81) no Hoare annotation was computed. [2021-01-06 11:36:35,146 INFO L189 CegarLoopUtils]: For program point L65-1(lines 26 90) no Hoare annotation was computed. [2021-01-06 11:36:35,147 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2021-01-06 11:36:35,147 INFO L192 CegarLoopUtils]: At program point L94(lines 6 95) the Hoare annotation is: true [2021-01-06 11:36:35,148 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-01-06 11:36:35,149 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-01-06 11:36:35,149 INFO L189 CegarLoopUtils]: For program point L28(lines 28 30) no Hoare annotation was computed. [2021-01-06 11:36:35,149 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 93) no Hoare annotation was computed. [2021-01-06 11:36:35,149 INFO L189 CegarLoopUtils]: For program point L86(line 86) no Hoare annotation was computed. [2021-01-06 11:36:35,150 INFO L185 CegarLoopUtils]: At program point L86-1(lines 7 95) the Hoare annotation is: false [2021-01-06 11:36:35,150 INFO L189 CegarLoopUtils]: For program point L70-1(lines 26 90) no Hoare annotation was computed. [2021-01-06 11:36:35,150 INFO L189 CegarLoopUtils]: For program point L66(line 66) no Hoare annotation was computed. [2021-01-06 11:36:35,150 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-01-06 11:36:35,150 INFO L192 CegarLoopUtils]: At program point L91(lines 7 95) the Hoare annotation is: true [2021-01-06 11:36:35,151 INFO L189 CegarLoopUtils]: For program point L75-1(lines 26 90) no Hoare annotation was computed. [2021-01-06 11:36:35,151 INFO L189 CegarLoopUtils]: For program point L71(line 71) no Hoare annotation was computed. [2021-01-06 11:36:35,151 INFO L189 CegarLoopUtils]: For program point L59-1(lines 26 90) no Hoare annotation was computed. [2021-01-06 11:36:35,151 INFO L189 CegarLoopUtils]: For program point L55-1(lines 26 90) no Hoare annotation was computed. [2021-01-06 11:36:35,151 INFO L189 CegarLoopUtils]: For program point L51-1(lines 26 90) no Hoare annotation was computed. [2021-01-06 11:36:35,151 INFO L189 CegarLoopUtils]: For program point L80-1(lines 26 90) no Hoare annotation was computed. [2021-01-06 11:36:35,151 INFO L189 CegarLoopUtils]: For program point L47-1(lines 26 90) no Hoare annotation was computed. [2021-01-06 11:36:35,152 INFO L189 CegarLoopUtils]: For program point L76(line 76) no Hoare annotation was computed. [2021-01-06 11:36:35,152 INFO L189 CegarLoopUtils]: For program point L43(lines 43 45) no Hoare annotation was computed. [2021-01-06 11:36:35,152 INFO L189 CegarLoopUtils]: For program point L43-2(lines 26 90) no Hoare annotation was computed. [2021-01-06 11:36:35,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 11:36:35 BoogieIcfgContainer [2021-01-06 11:36:35,165 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 11:36:35,166 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 11:36:35,166 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 11:36:35,166 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 11:36:35,167 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 11:36:33" (3/4) ... [2021-01-06 11:36:35,170 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-01-06 11:36:35,185 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-01-06 11:36:35,185 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-01-06 11:36:35,185 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 11:36:35,186 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 11:36:35,254 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/locks/test_locks_5.c-witness.graphml [2021-01-06 11:36:35,254 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 11:36:35,257 INFO L168 Benchmark]: Toolchain (without parser) took 2905.04 ms. Allocated memory was 172.0 MB in the beginning and 227.5 MB in the end (delta: 55.6 MB). Free memory was 147.9 MB in the beginning and 191.7 MB in the end (delta: -43.8 MB). Peak memory consumption was 12.3 MB. Max. memory is 8.0 GB. [2021-01-06 11:36:35,257 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 172.0 MB. Free memory is still 142.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 11:36:35,258 INFO L168 Benchmark]: CACSL2BoogieTranslator took 369.71 ms. Allocated memory is still 172.0 MB. Free memory was 147.8 MB in the beginning and 137.9 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-01-06 11:36:35,258 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.06 ms. Allocated memory is still 172.0 MB. Free memory was 137.8 MB in the beginning and 136.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 11:36:35,258 INFO L168 Benchmark]: Boogie Preprocessor took 41.03 ms. Allocated memory is still 172.0 MB. Free memory was 136.4 MB in the beginning and 135.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 11:36:35,259 INFO L168 Benchmark]: RCFGBuilder took 371.08 ms. Allocated memory is still 172.0 MB. Free memory was 135.3 MB in the beginning and 120.3 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-01-06 11:36:35,259 INFO L168 Benchmark]: TraceAbstraction took 1973.18 ms. Allocated memory was 172.0 MB in the beginning and 227.5 MB in the end (delta: 55.6 MB). Free memory was 120.0 MB in the beginning and 194.8 MB in the end (delta: -74.9 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 11:36:35,260 INFO L168 Benchmark]: Witness Printer took 88.80 ms. Allocated memory is still 227.5 MB. Free memory was 194.8 MB in the beginning and 191.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-01-06 11:36:35,262 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 172.0 MB. Free memory is still 142.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 369.71 ms. Allocated memory is still 172.0 MB. Free memory was 147.8 MB in the beginning and 137.9 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 50.06 ms. Allocated memory is still 172.0 MB. Free memory was 137.8 MB in the beginning and 136.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 41.03 ms. Allocated memory is still 172.0 MB. Free memory was 136.4 MB in the beginning and 135.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 371.08 ms. Allocated memory is still 172.0 MB. Free memory was 135.3 MB in the beginning and 120.3 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1973.18 ms. Allocated memory was 172.0 MB in the beginning and 227.5 MB in the end (delta: 55.6 MB). Free memory was 120.0 MB in the beginning and 194.8 MB in the end (delta: -74.9 MB). There was no memory consumed. Max. memory is 8.0 GB. * Witness Printer took 88.80 ms. Allocated memory is still 227.5 MB. Free memory was 194.8 MB in the beginning and 191.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 93]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.8s, OverallIterations: 13, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 574 SDtfs, 264 SDslu, 358 SDs, 0 SdLazy, 69 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=389occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 13 MinimizatonAttempts, 136 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 41 NumberOfFragments, 4 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 183 NumberOfCodeBlocks, 183 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 170 ConstructedInterpolants, 0 QuantifiedInterpolants, 4278 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...