/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_6.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 01:42:40,789 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 01:42:40,792 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 01:42:40,827 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 01:42:40,828 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 01:42:40,831 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 01:42:40,833 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 01:42:40,835 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 01:42:40,840 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 01:42:40,842 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 01:42:40,858 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 01:42:40,860 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 01:42:40,860 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 01:42:40,862 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 01:42:40,863 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 01:42:40,865 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 01:42:40,866 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 01:42:40,867 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 01:42:40,869 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 01:42:40,872 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 01:42:40,873 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 01:42:40,875 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 01:42:40,877 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 01:42:40,878 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 01:42:40,881 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-23 01:42:40,881 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-23 01:42:40,881 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-23 01:42:40,884 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-23 01:42:40,884 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-23 01:42:40,887 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-23 01:42:40,887 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 01:42:40,888 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 01:42:40,889 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 01:42:40,891 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 01:42:40,893 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 01:42:40,893 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 01:42:40,894 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 01:42:40,894 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 01:42:40,898 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 01:42:40,903 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 01:42:40,904 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 01:42:40,905 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 01:42:40,961 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 01:42:40,961 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 01:42:40,964 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 01:42:40,964 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 01:42:40,964 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 01:42:40,965 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 01:42:40,966 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 01:42:40,967 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 01:42:40,967 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 01:42:40,967 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 01:42:40,968 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 01:42:40,968 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 01:42:40,969 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 01:42:40,969 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 01:42:40,969 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 01:42:40,969 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 01:42:40,969 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 01:42:40,970 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 01:42:40,970 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 01:42:40,970 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 01:42:40,970 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 01:42:40,970 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 01:42:40,971 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 01:42:40,971 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 01:42:40,971 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 01:42:40,972 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 01:42:41,383 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 01:42:41,431 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 01:42:41,434 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 01:42:41,437 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 01:42:41,437 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 01:42:41,438 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/locks/test_locks_6.c [2020-12-23 01:42:41,532 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/a659a905a/9050e8e542d74381a0c9d20a386f93a0/FLAG974a9eb60 [2020-12-23 01:42:42,082 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 01:42:42,082 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/locks/test_locks_6.c [2020-12-23 01:42:42,091 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/a659a905a/9050e8e542d74381a0c9d20a386f93a0/FLAG974a9eb60 [2020-12-23 01:42:42,440 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/a659a905a/9050e8e542d74381a0c9d20a386f93a0 [2020-12-23 01:42:42,443 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 01:42:42,446 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 01:42:42,449 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 01:42:42,450 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 01:42:42,454 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 01:42:42,455 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:42:42" (1/1) ... [2020-12-23 01:42:42,458 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@592704ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:42, skipping insertion in model container [2020-12-23 01:42:42,458 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:42:42" (1/1) ... [2020-12-23 01:42:42,471 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 01:42:42,502 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[~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[~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,] [2020-12-23 01:42:42,709 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_6.c[2544,2557] [2020-12-23 01:42:42,718 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 01:42:42,729 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[~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[~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,] [2020-12-23 01:42:42,755 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_6.c[2544,2557] [2020-12-23 01:42:42,757 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 01:42:42,773 INFO L208 MainTranslator]: Completed translation [2020-12-23 01:42:42,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:42 WrapperNode [2020-12-23 01:42:42,773 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 01:42:42,775 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 01:42:42,775 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 01:42:42,775 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 01:42:42,784 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:42" (1/1) ... [2020-12-23 01:42:42,793 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:42" (1/1) ... [2020-12-23 01:42:42,815 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 01:42:42,816 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 01:42:42,816 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 01:42:42,817 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 01:42:42,827 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:42" (1/1) ... [2020-12-23 01:42:42,828 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:42" (1/1) ... [2020-12-23 01:42:42,830 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:42" (1/1) ... [2020-12-23 01:42:42,830 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:42" (1/1) ... [2020-12-23 01:42:42,835 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:42" (1/1) ... [2020-12-23 01:42:42,840 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:42" (1/1) ... [2020-12-23 01:42:42,842 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:42" (1/1) ... [2020-12-23 01:42:42,845 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 01:42:42,846 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 01:42:42,846 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 01:42:42,847 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 01:42:42,848 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:42" (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 [2020-12-23 01:42:42,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 01:42:42,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 01:42:42,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 01:42:42,963 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 01:42:43,320 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 01:42:43,321 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2020-12-23 01:42:43,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:42:43 BoogieIcfgContainer [2020-12-23 01:42:43,324 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 01:42:43,356 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 01:42:43,356 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 01:42:43,363 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 01:42:43,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 01:42:42" (1/3) ... [2020-12-23 01:42:43,364 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41dab1a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:42:43, skipping insertion in model container [2020-12-23 01:42:43,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:42" (2/3) ... [2020-12-23 01:42:43,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41dab1a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:42:43, skipping insertion in model container [2020-12-23 01:42:43,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:42:43" (3/3) ... [2020-12-23 01:42:43,373 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_6.c [2020-12-23 01:42:43,387 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 01:42:43,401 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 01:42:43,450 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 01:42:43,479 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 01:42:43,480 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 01:42:43,480 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 01:42:43,480 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 01:42:43,480 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 01:42:43,480 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 01:42:43,481 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 01:42:43,481 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 01:42:43,498 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-12-23 01:42:43,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-23 01:42:43,504 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:42:43,505 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:42:43,506 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:42:43,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:42:43,513 INFO L82 PathProgramCache]: Analyzing trace with hash -721193823, now seen corresponding path program 1 times [2020-12-23 01:42:43,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:42:43,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858790790] [2020-12-23 01:42:43,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:42:43,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:42:43,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:42:43,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858790790] [2020-12-23 01:42:43,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:42:43,739 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 01:42:43,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638049404] [2020-12-23 01:42:43,744 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 01:42:43,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:42:43,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 01:42:43,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:42:43,760 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 3 states. [2020-12-23 01:42:43,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:42:43,804 INFO L93 Difference]: Finished difference Result 59 states and 97 transitions. [2020-12-23 01:42:43,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 01:42:43,806 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-12-23 01:42:43,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:42:43,817 INFO L225 Difference]: With dead ends: 59 [2020-12-23 01:42:43,817 INFO L226 Difference]: Without dead ends: 45 [2020-12-23 01:42:43,820 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:42:43,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-12-23 01:42:43,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 31. [2020-12-23 01:42:43,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-23 01:42:43,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 54 transitions. [2020-12-23 01:42:43,860 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 54 transitions. Word has length 13 [2020-12-23 01:42:43,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:42:43,861 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 54 transitions. [2020-12-23 01:42:43,861 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 01:42:43,861 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 54 transitions. [2020-12-23 01:42:43,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-23 01:42:43,862 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:42:43,862 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:42:43,862 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 01:42:43,863 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:42:43,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:42:43,864 INFO L82 PathProgramCache]: Analyzing trace with hash -41135453, now seen corresponding path program 1 times [2020-12-23 01:42:43,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:42:43,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114828820] [2020-12-23 01:42:43,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:42:43,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:42:43,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:42:43,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114828820] [2020-12-23 01:42:43,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:42:43,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 01:42:43,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045179445] [2020-12-23 01:42:43,922 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 01:42:43,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:42:43,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 01:42:43,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:42:43,924 INFO L87 Difference]: Start difference. First operand 31 states and 54 transitions. Second operand 3 states. [2020-12-23 01:42:43,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:42:43,946 INFO L93 Difference]: Finished difference Result 74 states and 129 transitions. [2020-12-23 01:42:43,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 01:42:43,946 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-12-23 01:42:43,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:42:43,948 INFO L225 Difference]: With dead ends: 74 [2020-12-23 01:42:43,948 INFO L226 Difference]: Without dead ends: 45 [2020-12-23 01:42:43,949 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:42:43,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-12-23 01:42:43,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 43. [2020-12-23 01:42:43,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-12-23 01:42:43,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 74 transitions. [2020-12-23 01:42:43,961 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 74 transitions. Word has length 13 [2020-12-23 01:42:43,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:42:43,961 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 74 transitions. [2020-12-23 01:42:43,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 01:42:43,962 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 74 transitions. [2020-12-23 01:42:43,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 01:42:43,962 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:42:43,963 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:42:43,963 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 01:42:43,963 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:42:43,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:42:43,964 INFO L82 PathProgramCache]: Analyzing trace with hash -881957389, now seen corresponding path program 1 times [2020-12-23 01:42:43,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:42:43,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473769829] [2020-12-23 01:42:43,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:42:43,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:42:44,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:42:44,013 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473769829] [2020-12-23 01:42:44,014 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:42:44,014 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 01:42:44,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85635537] [2020-12-23 01:42:44,015 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 01:42:44,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:42:44,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 01:42:44,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:42:44,016 INFO L87 Difference]: Start difference. First operand 43 states and 74 transitions. Second operand 3 states. [2020-12-23 01:42:44,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:42:44,036 INFO L93 Difference]: Finished difference Result 69 states and 114 transitions. [2020-12-23 01:42:44,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 01:42:44,036 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-12-23 01:42:44,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:42:44,038 INFO L225 Difference]: With dead ends: 69 [2020-12-23 01:42:44,038 INFO L226 Difference]: Without dead ends: 48 [2020-12-23 01:42:44,039 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:42:44,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-12-23 01:42:44,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2020-12-23 01:42:44,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-12-23 01:42:44,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 76 transitions. [2020-12-23 01:42:44,060 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 76 transitions. Word has length 14 [2020-12-23 01:42:44,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:42:44,061 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 76 transitions. [2020-12-23 01:42:44,061 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 01:42:44,061 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 76 transitions. [2020-12-23 01:42:44,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 01:42:44,064 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:42:44,064 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:42:44,065 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 01:42:44,066 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:42:44,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:42:44,066 INFO L82 PathProgramCache]: Analyzing trace with hash -1274984399, now seen corresponding path program 1 times [2020-12-23 01:42:44,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:42:44,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963136819] [2020-12-23 01:42:44,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:42:44,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:42:44,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:42:44,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963136819] [2020-12-23 01:42:44,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:42:44,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 01:42:44,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62014173] [2020-12-23 01:42:44,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 01:42:44,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:42:44,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 01:42:44,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:42:44,168 INFO L87 Difference]: Start difference. First operand 46 states and 76 transitions. Second operand 3 states. [2020-12-23 01:42:44,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:42:44,187 INFO L93 Difference]: Finished difference Result 85 states and 141 transitions. [2020-12-23 01:42:44,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 01:42:44,188 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-12-23 01:42:44,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:42:44,189 INFO L225 Difference]: With dead ends: 85 [2020-12-23 01:42:44,190 INFO L226 Difference]: Without dead ends: 83 [2020-12-23 01:42:44,190 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:42:44,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-12-23 01:42:44,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 61. [2020-12-23 01:42:44,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-12-23 01:42:44,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 101 transitions. [2020-12-23 01:42:44,202 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 101 transitions. Word has length 14 [2020-12-23 01:42:44,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:42:44,202 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 101 transitions. [2020-12-23 01:42:44,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 01:42:44,203 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 101 transitions. [2020-12-23 01:42:44,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 01:42:44,204 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:42:44,204 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:42:44,204 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 01:42:44,204 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:42:44,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:42:44,205 INFO L82 PathProgramCache]: Analyzing trace with hash -594926029, now seen corresponding path program 1 times [2020-12-23 01:42:44,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:42:44,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919845221] [2020-12-23 01:42:44,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:42:44,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:42:44,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:42:44,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919845221] [2020-12-23 01:42:44,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:42:44,282 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 01:42:44,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607321096] [2020-12-23 01:42:44,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 01:42:44,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:42:44,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 01:42:44,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:42:44,285 INFO L87 Difference]: Start difference. First operand 61 states and 101 transitions. Second operand 3 states. [2020-12-23 01:42:44,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:42:44,326 INFO L93 Difference]: Finished difference Result 141 states and 235 transitions. [2020-12-23 01:42:44,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 01:42:44,329 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-12-23 01:42:44,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:42:44,330 INFO L225 Difference]: With dead ends: 141 [2020-12-23 01:42:44,331 INFO L226 Difference]: Without dead ends: 85 [2020-12-23 01:42:44,332 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:42:44,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-12-23 01:42:44,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 83. [2020-12-23 01:42:44,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-12-23 01:42:44,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 135 transitions. [2020-12-23 01:42:44,356 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 135 transitions. Word has length 14 [2020-12-23 01:42:44,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:42:44,357 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 135 transitions. [2020-12-23 01:42:44,357 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 01:42:44,357 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 135 transitions. [2020-12-23 01:42:44,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-23 01:42:44,358 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:42:44,358 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:42:44,359 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 01:42:44,359 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:42:44,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:42:44,361 INFO L82 PathProgramCache]: Analyzing trace with hash -869595720, now seen corresponding path program 1 times [2020-12-23 01:42:44,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:42:44,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259726183] [2020-12-23 01:42:44,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:42:44,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:42:44,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:42:44,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259726183] [2020-12-23 01:42:44,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:42:44,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 01:42:44,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145666322] [2020-12-23 01:42:44,431 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 01:42:44,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:42:44,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 01:42:44,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:42:44,433 INFO L87 Difference]: Start difference. First operand 83 states and 135 transitions. Second operand 3 states. [2020-12-23 01:42:44,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:42:44,453 INFO L93 Difference]: Finished difference Result 126 states and 202 transitions. [2020-12-23 01:42:44,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 01:42:44,454 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-12-23 01:42:44,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:42:44,455 INFO L225 Difference]: With dead ends: 126 [2020-12-23 01:42:44,455 INFO L226 Difference]: Without dead ends: 87 [2020-12-23 01:42:44,459 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:42:44,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-12-23 01:42:44,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 85. [2020-12-23 01:42:44,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-12-23 01:42:44,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 135 transitions. [2020-12-23 01:42:44,483 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 135 transitions. Word has length 15 [2020-12-23 01:42:44,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:42:44,484 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 135 transitions. [2020-12-23 01:42:44,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 01:42:44,484 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 135 transitions. [2020-12-23 01:42:44,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-23 01:42:44,486 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:42:44,486 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:42:44,487 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 01:42:44,487 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:42:44,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:42:44,488 INFO L82 PathProgramCache]: Analyzing trace with hash -1262622730, now seen corresponding path program 1 times [2020-12-23 01:42:44,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:42:44,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416276729] [2020-12-23 01:42:44,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:42:44,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:42:44,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:42:44,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416276729] [2020-12-23 01:42:44,526 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:42:44,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 01:42:44,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590432914] [2020-12-23 01:42:44,527 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 01:42:44,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:42:44,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 01:42:44,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:42:44,529 INFO L87 Difference]: Start difference. First operand 85 states and 135 transitions. Second operand 3 states. [2020-12-23 01:42:44,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:42:44,574 INFO L93 Difference]: Finished difference Result 237 states and 377 transitions. [2020-12-23 01:42:44,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 01:42:44,575 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-12-23 01:42:44,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:42:44,577 INFO L225 Difference]: With dead ends: 237 [2020-12-23 01:42:44,577 INFO L226 Difference]: Without dead ends: 159 [2020-12-23 01:42:44,579 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:42:44,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-12-23 01:42:44,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 157. [2020-12-23 01:42:44,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-12-23 01:42:44,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 243 transitions. [2020-12-23 01:42:44,609 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 243 transitions. Word has length 15 [2020-12-23 01:42:44,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:42:44,610 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 243 transitions. [2020-12-23 01:42:44,610 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 01:42:44,610 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 243 transitions. [2020-12-23 01:42:44,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-23 01:42:44,611 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:42:44,612 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:42:44,612 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 01:42:44,612 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:42:44,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:42:44,613 INFO L82 PathProgramCache]: Analyzing trace with hash -1942681100, now seen corresponding path program 1 times [2020-12-23 01:42:44,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:42:44,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111003393] [2020-12-23 01:42:44,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:42:44,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:42:44,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:42:44,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111003393] [2020-12-23 01:42:44,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:42:44,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 01:42:44,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939753240] [2020-12-23 01:42:44,648 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 01:42:44,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:42:44,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 01:42:44,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:42:44,650 INFO L87 Difference]: Start difference. First operand 157 states and 243 transitions. Second operand 3 states. [2020-12-23 01:42:44,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:42:44,669 INFO L93 Difference]: Finished difference Result 193 states and 301 transitions. [2020-12-23 01:42:44,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 01:42:44,669 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-12-23 01:42:44,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:42:44,671 INFO L225 Difference]: With dead ends: 193 [2020-12-23 01:42:44,671 INFO L226 Difference]: Without dead ends: 191 [2020-12-23 01:42:44,672 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:42:44,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-12-23 01:42:44,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 157. [2020-12-23 01:42:44,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-12-23 01:42:44,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 239 transitions. [2020-12-23 01:42:44,702 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 239 transitions. Word has length 15 [2020-12-23 01:42:44,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:42:44,703 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 239 transitions. [2020-12-23 01:42:44,703 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 01:42:44,703 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 239 transitions. [2020-12-23 01:42:44,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-23 01:42:44,709 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:42:44,709 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:42:44,709 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 01:42:44,709 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:42:44,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:42:44,710 INFO L82 PathProgramCache]: Analyzing trace with hash -486383640, now seen corresponding path program 1 times [2020-12-23 01:42:44,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:42:44,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757905574] [2020-12-23 01:42:44,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:42:44,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:42:44,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:42:44,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757905574] [2020-12-23 01:42:44,761 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:42:44,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 01:42:44,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340450747] [2020-12-23 01:42:44,762 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 01:42:44,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:42:44,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 01:42:44,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:42:44,764 INFO L87 Difference]: Start difference. First operand 157 states and 239 transitions. Second operand 3 states. [2020-12-23 01:42:44,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:42:44,785 INFO L93 Difference]: Finished difference Result 277 states and 425 transitions. [2020-12-23 01:42:44,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 01:42:44,786 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-12-23 01:42:44,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:42:44,788 INFO L225 Difference]: With dead ends: 277 [2020-12-23 01:42:44,789 INFO L226 Difference]: Without dead ends: 275 [2020-12-23 01:42:44,789 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 [2020-12-23 01:42:44,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2020-12-23 01:42:44,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 225. [2020-12-23 01:42:44,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2020-12-23 01:42:44,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 335 transitions. [2020-12-23 01:42:44,808 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 335 transitions. Word has length 16 [2020-12-23 01:42:44,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:42:44,808 INFO L481 AbstractCegarLoop]: Abstraction has 225 states and 335 transitions. [2020-12-23 01:42:44,809 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 01:42:44,809 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 335 transitions. [2020-12-23 01:42:44,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-23 01:42:44,811 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:42:44,811 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:42:44,811 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-23 01:42:44,811 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:42:44,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:42:44,812 INFO L82 PathProgramCache]: Analyzing trace with hash 193674730, now seen corresponding path program 1 times [2020-12-23 01:42:44,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:42:44,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978515963] [2020-12-23 01:42:44,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:42:44,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:42:44,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:42:44,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978515963] [2020-12-23 01:42:44,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:42:44,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 01:42:44,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283641658] [2020-12-23 01:42:44,849 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 01:42:44,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:42:44,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 01:42:44,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:42:44,850 INFO L87 Difference]: Start difference. First operand 225 states and 335 transitions. Second operand 3 states. [2020-12-23 01:42:44,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:42:44,877 INFO L93 Difference]: Finished difference Result 517 states and 769 transitions. [2020-12-23 01:42:44,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 01:42:44,878 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-12-23 01:42:44,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:42:44,880 INFO L225 Difference]: With dead ends: 517 [2020-12-23 01:42:44,881 INFO L226 Difference]: Without dead ends: 299 [2020-12-23 01:42:44,883 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:42:44,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2020-12-23 01:42:44,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 297. [2020-12-23 01:42:44,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 297 states. [2020-12-23 01:42:44,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 427 transitions. [2020-12-23 01:42:44,910 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 427 transitions. Word has length 16 [2020-12-23 01:42:44,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:42:44,910 INFO L481 AbstractCegarLoop]: Abstraction has 297 states and 427 transitions. [2020-12-23 01:42:44,910 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 01:42:44,911 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 427 transitions. [2020-12-23 01:42:44,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-23 01:42:44,913 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:42:44,913 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:42:44,913 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-23 01:42:44,914 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:42:44,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:42:44,914 INFO L82 PathProgramCache]: Analyzing trace with hash 2102192011, now seen corresponding path program 1 times [2020-12-23 01:42:44,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:42:44,915 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805992833] [2020-12-23 01:42:44,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:42:44,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:42:44,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:42:44,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805992833] [2020-12-23 01:42:44,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:42:44,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 01:42:44,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301713852] [2020-12-23 01:42:44,987 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 01:42:44,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:42:44,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 01:42:44,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:42:44,989 INFO L87 Difference]: Start difference. First operand 297 states and 427 transitions. Second operand 3 states. [2020-12-23 01:42:45,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:42:45,033 INFO L93 Difference]: Finished difference Result 453 states and 649 transitions. [2020-12-23 01:42:45,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 01:42:45,033 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-12-23 01:42:45,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:42:45,036 INFO L225 Difference]: With dead ends: 453 [2020-12-23 01:42:45,037 INFO L226 Difference]: Without dead ends: 311 [2020-12-23 01:42:45,038 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:42:45,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2020-12-23 01:42:45,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 309. [2020-12-23 01:42:45,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309 states. [2020-12-23 01:42:45,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 435 transitions. [2020-12-23 01:42:45,066 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 435 transitions. Word has length 17 [2020-12-23 01:42:45,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:42:45,066 INFO L481 AbstractCegarLoop]: Abstraction has 309 states and 435 transitions. [2020-12-23 01:42:45,067 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 01:42:45,067 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 435 transitions. [2020-12-23 01:42:45,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-23 01:42:45,069 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:42:45,069 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:42:45,069 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-23 01:42:45,070 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:42:45,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:42:45,070 INFO L82 PathProgramCache]: Analyzing trace with hash 1709165001, now seen corresponding path program 1 times [2020-12-23 01:42:45,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:42:45,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864103956] [2020-12-23 01:42:45,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:42:45,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:42:45,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:42:45,104 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864103956] [2020-12-23 01:42:45,104 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:42:45,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 01:42:45,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138882713] [2020-12-23 01:42:45,105 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 01:42:45,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:42:45,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 01:42:45,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:42:45,107 INFO L87 Difference]: Start difference. First operand 309 states and 435 transitions. Second operand 3 states. [2020-12-23 01:42:45,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:42:45,144 INFO L93 Difference]: Finished difference Result 521 states and 733 transitions. [2020-12-23 01:42:45,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 01:42:45,145 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-12-23 01:42:45,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:42:45,152 INFO L225 Difference]: With dead ends: 521 [2020-12-23 01:42:45,153 INFO L226 Difference]: Without dead ends: 519 [2020-12-23 01:42:45,154 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:42:45,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2020-12-23 01:42:45,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 453. [2020-12-23 01:42:45,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 453 states. [2020-12-23 01:42:45,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 619 transitions. [2020-12-23 01:42:45,222 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 619 transitions. Word has length 17 [2020-12-23 01:42:45,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:42:45,223 INFO L481 AbstractCegarLoop]: Abstraction has 453 states and 619 transitions. [2020-12-23 01:42:45,223 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 01:42:45,223 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 619 transitions. [2020-12-23 01:42:45,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-23 01:42:45,229 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:42:45,229 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:42:45,229 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-23 01:42:45,229 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:42:45,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:42:45,233 INFO L82 PathProgramCache]: Analyzing trace with hash -1905743925, now seen corresponding path program 1 times [2020-12-23 01:42:45,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:42:45,234 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748611327] [2020-12-23 01:42:45,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:42:45,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:42:45,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:42:45,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748611327] [2020-12-23 01:42:45,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:42:45,281 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 01:42:45,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372915309] [2020-12-23 01:42:45,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 01:42:45,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:42:45,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 01:42:45,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:42:45,284 INFO L87 Difference]: Start difference. First operand 453 states and 619 transitions. Second operand 3 states. [2020-12-23 01:42:45,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:42:45,338 INFO L93 Difference]: Finished difference Result 1017 states and 1373 transitions. [2020-12-23 01:42:45,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 01:42:45,339 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-12-23 01:42:45,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:42:45,343 INFO L225 Difference]: With dead ends: 1017 [2020-12-23 01:42:45,344 INFO L226 Difference]: Without dead ends: 583 [2020-12-23 01:42:45,351 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:42:45,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2020-12-23 01:42:45,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 581. [2020-12-23 01:42:45,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 581 states. [2020-12-23 01:42:45,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 755 transitions. [2020-12-23 01:42:45,388 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 755 transitions. Word has length 17 [2020-12-23 01:42:45,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:42:45,397 INFO L481 AbstractCegarLoop]: Abstraction has 581 states and 755 transitions. [2020-12-23 01:42:45,398 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 01:42:45,398 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 755 transitions. [2020-12-23 01:42:45,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-23 01:42:45,403 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:42:45,403 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:42:45,403 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-23 01:42:45,404 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:42:45,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:42:45,406 INFO L82 PathProgramCache]: Analyzing trace with hash 1444723487, now seen corresponding path program 1 times [2020-12-23 01:42:45,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:42:45,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367470035] [2020-12-23 01:42:45,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:42:45,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:42:45,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:42:45,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367470035] [2020-12-23 01:42:45,473 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:42:45,473 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 01:42:45,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209418099] [2020-12-23 01:42:45,473 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 01:42:45,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:42:45,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 01:42:45,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:42:45,475 INFO L87 Difference]: Start difference. First operand 581 states and 755 transitions. Second operand 3 states. [2020-12-23 01:42:45,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:42:45,501 INFO L93 Difference]: Finished difference Result 873 states and 1125 transitions. [2020-12-23 01:42:45,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 01:42:45,501 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-12-23 01:42:45,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:42:45,505 INFO L225 Difference]: With dead ends: 873 [2020-12-23 01:42:45,505 INFO L226 Difference]: Without dead ends: 599 [2020-12-23 01:42:45,506 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:42:45,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2020-12-23 01:42:45,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 597. [2020-12-23 01:42:45,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 597 states. [2020-12-23 01:42:45,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 755 transitions. [2020-12-23 01:42:45,528 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 755 transitions. Word has length 18 [2020-12-23 01:42:45,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:42:45,528 INFO L481 AbstractCegarLoop]: Abstraction has 597 states and 755 transitions. [2020-12-23 01:42:45,528 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 01:42:45,528 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 755 transitions. [2020-12-23 01:42:45,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-23 01:42:45,530 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:42:45,530 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:42:45,530 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-23 01:42:45,530 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:42:45,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:42:45,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1051696477, now seen corresponding path program 1 times [2020-12-23 01:42:45,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:42:45,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613564030] [2020-12-23 01:42:45,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:42:45,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:42:45,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:42:45,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613564030] [2020-12-23 01:42:45,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:42:45,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 01:42:45,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101246637] [2020-12-23 01:42:45,560 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 01:42:45,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:42:45,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 01:42:45,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:42:45,561 INFO L87 Difference]: Start difference. First operand 597 states and 755 transitions. Second operand 3 states. [2020-12-23 01:42:45,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:42:45,591 INFO L93 Difference]: Finished difference Result 967 states and 1204 transitions. [2020-12-23 01:42:45,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 01:42:45,591 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-12-23 01:42:45,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:42:45,596 INFO L225 Difference]: With dead ends: 967 [2020-12-23 01:42:45,597 INFO L226 Difference]: Without dead ends: 965 [2020-12-23 01:42:45,597 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:42:45,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 965 states. [2020-12-23 01:42:45,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 965 to 901. [2020-12-23 01:42:45,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 901 states. [2020-12-23 01:42:45,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1107 transitions. [2020-12-23 01:42:45,629 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1107 transitions. Word has length 18 [2020-12-23 01:42:45,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:42:45,630 INFO L481 AbstractCegarLoop]: Abstraction has 901 states and 1107 transitions. [2020-12-23 01:42:45,630 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 01:42:45,630 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1107 transitions. [2020-12-23 01:42:45,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-23 01:42:45,632 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:42:45,632 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:42:45,632 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-23 01:42:45,633 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:42:45,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:42:45,633 INFO L82 PathProgramCache]: Analyzing trace with hash 1731754847, now seen corresponding path program 1 times [2020-12-23 01:42:45,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:42:45,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837842115] [2020-12-23 01:42:45,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:42:45,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:42:45,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:42:45,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837842115] [2020-12-23 01:42:45,656 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:42:45,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 01:42:45,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622138534] [2020-12-23 01:42:45,657 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 01:42:45,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:42:45,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 01:42:45,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:42:45,658 INFO L87 Difference]: Start difference. First operand 901 states and 1107 transitions. Second operand 3 states. [2020-12-23 01:42:45,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:42:45,694 INFO L93 Difference]: Finished difference Result 1989 states and 2387 transitions. [2020-12-23 01:42:45,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 01:42:45,695 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-12-23 01:42:45,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:42:45,695 INFO L225 Difference]: With dead ends: 1989 [2020-12-23 01:42:45,695 INFO L226 Difference]: Without dead ends: 0 [2020-12-23 01:42:45,697 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:42:45,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-23 01:42:45,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-23 01:42:45,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-23 01:42:45,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-23 01:42:45,698 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-12-23 01:42:45,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:42:45,699 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-23 01:42:45,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 01:42:45,699 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-23 01:42:45,699 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-23 01:42:45,699 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-23 01:42:45,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-23 01:42:45,723 INFO L189 CegarLoopUtils]: For program point L60-1(lines 29 104) no Hoare annotation was computed. [2020-12-23 01:42:45,723 INFO L189 CegarLoopUtils]: For program point L85(line 85) no Hoare annotation was computed. [2020-12-23 01:42:45,723 INFO L189 CegarLoopUtils]: For program point L52-1(lines 29 104) no Hoare annotation was computed. [2020-12-23 01:42:45,723 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-23 01:42:45,723 INFO L189 CegarLoopUtils]: For program point L94-1(lines 29 104) no Hoare annotation was computed. [2020-12-23 01:42:45,723 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-23 01:42:45,723 INFO L189 CegarLoopUtils]: For program point L95(line 95) no Hoare annotation was computed. [2020-12-23 01:42:45,723 INFO L189 CegarLoopUtils]: For program point L79-1(lines 29 104) no Hoare annotation was computed. [2020-12-23 01:42:45,723 INFO L189 CegarLoopUtils]: For program point L80(line 80) no Hoare annotation was computed. [2020-12-23 01:42:45,724 INFO L192 CegarLoopUtils]: At program point L105(lines 7 109) the Hoare annotation is: true [2020-12-23 01:42:45,724 INFO L189 CegarLoopUtils]: For program point L31(lines 31 33) no Hoare annotation was computed. [2020-12-23 01:42:45,724 INFO L189 CegarLoopUtils]: For program point L64-1(lines 29 104) no Hoare annotation was computed. [2020-12-23 01:42:45,724 INFO L189 CegarLoopUtils]: For program point L89-1(lines 29 104) no Hoare annotation was computed. [2020-12-23 01:42:45,724 INFO L189 CegarLoopUtils]: For program point L56-1(lines 29 104) no Hoare annotation was computed. [2020-12-23 01:42:45,724 INFO L189 CegarLoopUtils]: For program point L48(lines 48 50) no Hoare annotation was computed. [2020-12-23 01:42:45,724 INFO L189 CegarLoopUtils]: For program point L48-2(lines 29 104) no Hoare annotation was computed. [2020-12-23 01:42:45,724 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-23 01:42:45,724 INFO L189 CegarLoopUtils]: For program point L90(line 90) no Hoare annotation was computed. [2020-12-23 01:42:45,725 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 107) no Hoare annotation was computed. [2020-12-23 01:42:45,725 INFO L189 CegarLoopUtils]: For program point L74-1(lines 29 104) no Hoare annotation was computed. [2020-12-23 01:42:45,725 INFO L192 CegarLoopUtils]: At program point L99-1(lines 29 104) the Hoare annotation is: true [2020-12-23 01:42:45,725 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-23 01:42:45,725 INFO L192 CegarLoopUtils]: At program point L108(lines 6 109) the Hoare annotation is: true [2020-12-23 01:42:45,725 INFO L189 CegarLoopUtils]: For program point L75(line 75) no Hoare annotation was computed. [2020-12-23 01:42:45,725 INFO L189 CegarLoopUtils]: For program point L100(line 100) no Hoare annotation was computed. [2020-12-23 01:42:45,725 INFO L185 CegarLoopUtils]: At program point L100-1(lines 7 109) the Hoare annotation is: false [2020-12-23 01:42:45,726 INFO L189 CegarLoopUtils]: For program point L84-1(lines 29 104) no Hoare annotation was computed. [2020-12-23 01:42:45,726 INFO L189 CegarLoopUtils]: For program point L68-1(lines 29 104) no Hoare annotation was computed. [2020-12-23 01:42:45,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 01:42:45 BoogieIcfgContainer [2020-12-23 01:42:45,736 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 01:42:45,737 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 01:42:45,737 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 01:42:45,737 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 01:42:45,737 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:42:43" (3/4) ... [2020-12-23 01:42:45,741 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-23 01:42:45,752 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-12-23 01:42:45,753 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-23 01:42:45,753 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 01:42:45,753 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 01:42:45,804 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/locks/test_locks_6.c-witness.graphml [2020-12-23 01:42:45,804 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 01:42:45,807 INFO L168 Benchmark]: Toolchain (without parser) took 3360.32 ms. Allocated memory was 162.5 MB in the beginning and 205.5 MB in the end (delta: 43.0 MB). Free memory was 137.7 MB in the beginning and 102.4 MB in the end (delta: 35.3 MB). Peak memory consumption was 79.2 MB. Max. memory is 8.0 GB. [2020-12-23 01:42:45,807 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 162.5 MB. Free memory is still 133.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 01:42:45,808 INFO L168 Benchmark]: CACSL2BoogieTranslator took 324.55 ms. Allocated memory is still 162.5 MB. Free memory was 137.5 MB in the beginning and 127.4 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-12-23 01:42:45,808 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.71 ms. Allocated memory is still 162.5 MB. Free memory was 127.3 MB in the beginning and 125.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 01:42:45,809 INFO L168 Benchmark]: Boogie Preprocessor took 29.11 ms. Allocated memory is still 162.5 MB. Free memory was 125.9 MB in the beginning and 124.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 01:42:45,809 INFO L168 Benchmark]: RCFGBuilder took 477.60 ms. Allocated memory is still 162.5 MB. Free memory was 124.7 MB in the beginning and 108.6 MB in the end (delta: 16.1 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2020-12-23 01:42:45,810 INFO L168 Benchmark]: TraceAbstraction took 2379.90 ms. Allocated memory was 162.5 MB in the beginning and 205.5 MB in the end (delta: 43.0 MB). Free memory was 145.0 MB in the beginning and 105.6 MB in the end (delta: 39.4 MB). Peak memory consumption was 81.9 MB. Max. memory is 8.0 GB. [2020-12-23 01:42:45,811 INFO L168 Benchmark]: Witness Printer took 67.79 ms. Allocated memory is still 205.5 MB. Free memory was 105.6 MB in the beginning and 102.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-23 01:42:45,814 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 162.5 MB. Free memory is still 133.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 324.55 ms. Allocated memory is still 162.5 MB. Free memory was 137.5 MB in the beginning and 127.4 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 40.71 ms. Allocated memory is still 162.5 MB. Free memory was 127.3 MB in the beginning and 125.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 29.11 ms. Allocated memory is still 162.5 MB. Free memory was 125.9 MB in the beginning and 124.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 477.60 ms. Allocated memory is still 162.5 MB. Free memory was 124.7 MB in the beginning and 108.6 MB in the end (delta: 16.1 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2379.90 ms. Allocated memory was 162.5 MB in the beginning and 205.5 MB in the end (delta: 43.0 MB). Free memory was 145.0 MB in the beginning and 105.6 MB in the end (delta: 39.4 MB). Peak memory consumption was 81.9 MB. Max. memory is 8.0 GB. * Witness Printer took 67.79 ms. Allocated memory is still 205.5 MB. Free memory was 105.6 MB in the beginning and 102.4 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: 107]: 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: 6]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.2s, OverallIterations: 16, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 828 SDtfs, 391 SDslu, 527 SDs, 0 SdLazy, 85 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=901occurred in iteration=15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 16 MinimizatonAttempts, 268 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 73 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, 250 NumberOfCodeBlocks, 250 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 234 ConstructedInterpolants, 0 QuantifiedInterpolants, 6810 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 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...