/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-DerefFreeMemtrack-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/locks/test_locks_7.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-07 05:46:46,875 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-07 05:46:46,879 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-07 05:46:46,933 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-07 05:46:46,934 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-07 05:46:46,936 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-07 05:46:46,939 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-07 05:46:46,942 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-07 05:46:46,945 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-07 05:46:46,947 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-07 05:46:46,949 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-07 05:46:46,951 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-07 05:46:46,952 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-07 05:46:46,954 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-07 05:46:46,956 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-07 05:46:46,958 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-07 05:46:46,960 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-07 05:46:46,962 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-07 05:46:46,965 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-07 05:46:46,968 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-07 05:46:46,971 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-07 05:46:46,974 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-07 05:46:46,976 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-07 05:46:46,978 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-07 05:46:46,982 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-07 05:46:46,998 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-07 05:46:47,000 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-07 05:46:47,001 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-07 05:46:47,003 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2021-01-07 05:46:47,038 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-07 05:46:47,039 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-07 05:46:47,041 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-07 05:46:47,041 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-07 05:46:47,042 INFO L138 SettingsManager]: * Use SBE=true [2021-01-07 05:46:47,042 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-07 05:46:47,042 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-01-07 05:46:47,043 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-07 05:46:47,043 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-07 05:46:47,043 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-01-07 05:46:47,044 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-01-07 05:46:47,044 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-01-07 05:46:47,044 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-07 05:46:47,045 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-01-07 05:46:47,045 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-07 05:46:47,045 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-07 05:46:47,046 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-07 05:46:47,046 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-07 05:46:47,046 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-07 05:46:47,047 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-07 05:46:47,047 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-07 05:46:47,047 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-07 05:46:47,048 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-07 05:46:47,048 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-07 05:46:47,048 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-07 05:46:47,566 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-07 05:46:47,615 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-07 05:46:47,620 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-07 05:46:47,623 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-07 05:46:47,626 INFO L275 PluginConnector]: CDTParser initialized [2021-01-07 05:46:47,628 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/locks/test_locks_7.c [2021-01-07 05:46:47,743 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/767262c20/4ce5beb66a2643748bdf9bf87a900c84/FLAGa691cc4d5 [2021-01-07 05:46:48,593 INFO L306 CDTParser]: Found 1 translation units. [2021-01-07 05:46:48,594 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/locks/test_locks_7.c [2021-01-07 05:46:48,611 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/767262c20/4ce5beb66a2643748bdf9bf87a900c84/FLAGa691cc4d5 [2021-01-07 05:46:48,913 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/767262c20/4ce5beb66a2643748bdf9bf87a900c84 [2021-01-07 05:46:48,921 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-07 05:46:48,928 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-07 05:46:48,934 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-07 05:46:48,934 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-07 05:46:48,940 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-07 05:46:48,941 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.01 05:46:48" (1/1) ... [2021-01-07 05:46:48,945 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e935e93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:46:48, skipping insertion in model container [2021-01-07 05:46:48,945 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.01 05:46:48" (1/1) ... [2021-01-07 05:46:48,957 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-07 05:46:49,003 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: lhs: VariableLHS[~cond~0,] left hand side expression in assignment: lhs: VariableLHS[~lk1~0,] left hand side expression in assignment: lhs: VariableLHS[~lk2~0,] left hand side expression in assignment: lhs: VariableLHS[~lk3~0,] left hand side expression in assignment: lhs: VariableLHS[~lk4~0,] left hand side expression in assignment: lhs: VariableLHS[~lk5~0,] left hand side expression in assignment: lhs: VariableLHS[~lk6~0,] left hand side expression in assignment: lhs: VariableLHS[~lk7~0,] left hand side expression in assignment: lhs: VariableLHS[~lk1~0,] left hand side expression in assignment: lhs: VariableLHS[~lk2~0,] left hand side expression in assignment: lhs: VariableLHS[~lk3~0,] left hand side expression in assignment: lhs: VariableLHS[~lk4~0,] left hand side expression in assignment: lhs: VariableLHS[~lk5~0,] left hand side expression in assignment: lhs: VariableLHS[~lk6~0,] left hand side expression in assignment: lhs: VariableLHS[~lk7~0,] left hand side expression in assignment: lhs: VariableLHS[~lk1~0,] left hand side expression in assignment: lhs: VariableLHS[~lk2~0,] left hand side expression in assignment: lhs: VariableLHS[~lk3~0,] left hand side expression in assignment: lhs: VariableLHS[~lk4~0,] left hand side expression in assignment: lhs: VariableLHS[~lk5~0,] left hand side expression in assignment: lhs: VariableLHS[~lk6~0,] left hand side expression in assignment: lhs: VariableLHS[~lk7~0,] [2021-01-07 05:46:49,220 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_7.c[2881,2894] [2021-01-07 05:46:49,226 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-07 05:46:49,244 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: lhs: VariableLHS[~cond~0,] left hand side expression in assignment: lhs: VariableLHS[~lk1~0,] left hand side expression in assignment: lhs: VariableLHS[~lk2~0,] left hand side expression in assignment: lhs: VariableLHS[~lk3~0,] left hand side expression in assignment: lhs: VariableLHS[~lk4~0,] left hand side expression in assignment: lhs: VariableLHS[~lk5~0,] left hand side expression in assignment: lhs: VariableLHS[~lk6~0,] left hand side expression in assignment: lhs: VariableLHS[~lk7~0,] left hand side expression in assignment: lhs: VariableLHS[~lk1~0,] left hand side expression in assignment: lhs: VariableLHS[~lk2~0,] left hand side expression in assignment: lhs: VariableLHS[~lk3~0,] left hand side expression in assignment: lhs: VariableLHS[~lk4~0,] left hand side expression in assignment: lhs: VariableLHS[~lk5~0,] left hand side expression in assignment: lhs: VariableLHS[~lk6~0,] left hand side expression in assignment: lhs: VariableLHS[~lk7~0,] left hand side expression in assignment: lhs: VariableLHS[~lk1~0,] left hand side expression in assignment: lhs: VariableLHS[~lk2~0,] left hand side expression in assignment: lhs: VariableLHS[~lk3~0,] left hand side expression in assignment: lhs: VariableLHS[~lk4~0,] left hand side expression in assignment: lhs: VariableLHS[~lk5~0,] left hand side expression in assignment: lhs: VariableLHS[~lk6~0,] left hand side expression in assignment: lhs: VariableLHS[~lk7~0,] [2021-01-07 05:46:49,282 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_7.c[2881,2894] [2021-01-07 05:46:49,284 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-07 05:46:49,310 INFO L208 MainTranslator]: Completed translation [2021-01-07 05:46:49,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:46:49 WrapperNode [2021-01-07 05:46:49,311 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-07 05:46:49,313 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-07 05:46:49,314 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-07 05:46:49,314 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-07 05:46:49,327 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:46:49" (1/1) ... [2021-01-07 05:46:49,341 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:46:49" (1/1) ... [2021-01-07 05:46:49,378 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-07 05:46:49,380 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-07 05:46:49,380 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-07 05:46:49,381 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-07 05:46:49,396 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:46:49" (1/1) ... [2021-01-07 05:46:49,397 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:46:49" (1/1) ... [2021-01-07 05:46:49,400 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:46:49" (1/1) ... [2021-01-07 05:46:49,400 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:46:49" (1/1) ... [2021-01-07 05:46:49,406 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:46:49" (1/1) ... [2021-01-07 05:46:49,413 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:46:49" (1/1) ... [2021-01-07 05:46:49,416 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:46:49" (1/1) ... [2021-01-07 05:46:49,423 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-07 05:46:49,424 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-07 05:46:49,425 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-07 05:46:49,425 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-07 05:46:49,428 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:46:49" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-07 05:46:49,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-07 05:46:49,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-07 05:46:49,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-07 05:46:49,622 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-07 05:46:50,372 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-07 05:46:50,372 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-01-07 05:46:50,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 05:46:50 BoogieIcfgContainer [2021-01-07 05:46:50,376 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-07 05:46:50,379 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-07 05:46:50,379 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-07 05:46:50,385 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-07 05:46:50,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.01 05:46:48" (1/3) ... [2021-01-07 05:46:50,387 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b6f8fa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.01 05:46:50, skipping insertion in model container [2021-01-07 05:46:50,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:46:49" (2/3) ... [2021-01-07 05:46:50,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b6f8fa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.01 05:46:50, skipping insertion in model container [2021-01-07 05:46:50,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 05:46:50" (3/3) ... [2021-01-07 05:46:50,392 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_7.c [2021-01-07 05:46:50,402 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-07 05:46:50,411 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-01-07 05:46:50,444 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-01-07 05:46:50,552 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-07 05:46:50,552 INFO L378 AbstractCegarLoop]: Hoare is false [2021-01-07 05:46:50,552 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-07 05:46:50,553 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-07 05:46:50,553 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-07 05:46:50,553 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-07 05:46:50,554 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-07 05:46:50,554 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-07 05:46:50,585 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2021-01-07 05:46:50,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-01-07 05:46:50,599 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:46:50,600 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-01-07 05:46:50,601 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:46:50,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:46:50,616 INFO L82 PathProgramCache]: Analyzing trace with hash 28824843, now seen corresponding path program 1 times [2021-01-07 05:46:50,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:46:50,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924354365] [2021-01-07 05:46:50,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:46:50,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:46:50,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:46:50,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924354365] [2021-01-07 05:46:50,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:46:50,948 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-07 05:46:50,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528987306] [2021-01-07 05:46:50,957 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-07 05:46:50,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:46:50,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-07 05:46:50,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-07 05:46:50,995 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2021-01-07 05:46:51,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:46:51,023 INFO L93 Difference]: Finished difference Result 32 states and 52 transitions. [2021-01-07 05:46:51,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-07 05:46:51,025 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2021-01-07 05:46:51,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:46:51,053 INFO L225 Difference]: With dead ends: 32 [2021-01-07 05:46:51,053 INFO L226 Difference]: Without dead ends: 30 [2021-01-07 05:46:51,056 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-07 05:46:51,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-01-07 05:46:51,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-01-07 05:46:51,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-01-07 05:46:51,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 50 transitions. [2021-01-07 05:46:51,149 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 50 transitions. Word has length 5 [2021-01-07 05:46:51,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:46:51,150 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 50 transitions. [2021-01-07 05:46:51,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-07 05:46:51,151 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 50 transitions. [2021-01-07 05:46:51,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-01-07 05:46:51,151 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:46:51,152 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-01-07 05:46:51,152 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-07 05:46:51,153 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:46:51,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:46:51,155 INFO L82 PathProgramCache]: Analyzing trace with hash 889696331, now seen corresponding path program 1 times [2021-01-07 05:46:51,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:46:51,155 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706281970] [2021-01-07 05:46:51,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:46:51,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:46:51,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:46:51,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706281970] [2021-01-07 05:46:51,226 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:46:51,226 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-07 05:46:51,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256216911] [2021-01-07 05:46:51,229 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:46:51,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:46:51,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:46:51,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:46:51,232 INFO L87 Difference]: Start difference. First operand 30 states and 50 transitions. Second operand 3 states. [2021-01-07 05:46:51,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:46:51,247 INFO L93 Difference]: Finished difference Result 29 states and 49 transitions. [2021-01-07 05:46:51,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:46:51,249 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2021-01-07 05:46:51,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:46:51,250 INFO L225 Difference]: With dead ends: 29 [2021-01-07 05:46:51,251 INFO L226 Difference]: Without dead ends: 27 [2021-01-07 05:46:51,252 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:46:51,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-01-07 05:46:51,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-01-07 05:46:51,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-01-07 05:46:51,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 47 transitions. [2021-01-07 05:46:51,260 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 47 transitions. Word has length 6 [2021-01-07 05:46:51,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:46:51,260 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 47 transitions. [2021-01-07 05:46:51,261 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:46:51,261 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 47 transitions. [2021-01-07 05:46:51,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-07 05:46:51,262 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:46:51,262 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:46:51,263 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-07 05:46:51,263 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:46:51,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:46:51,265 INFO L82 PathProgramCache]: Analyzing trace with hash -882170869, now seen corresponding path program 1 times [2021-01-07 05:46:51,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:46:51,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035915331] [2021-01-07 05:46:51,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:46:51,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:46:51,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:46:51,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035915331] [2021-01-07 05:46:51,327 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:46:51,327 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:46:51,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761197797] [2021-01-07 05:46:51,329 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:46:51,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:46:51,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:46:51,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:46:51,331 INFO L87 Difference]: Start difference. First operand 27 states and 47 transitions. Second operand 3 states. [2021-01-07 05:46:51,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:46:51,360 INFO L93 Difference]: Finished difference Result 51 states and 89 transitions. [2021-01-07 05:46:51,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:46:51,361 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2021-01-07 05:46:51,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:46:51,363 INFO L225 Difference]: With dead ends: 51 [2021-01-07 05:46:51,363 INFO L226 Difference]: Without dead ends: 51 [2021-01-07 05:46:51,364 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:46:51,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-01-07 05:46:51,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 35. [2021-01-07 05:46:51,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-01-07 05:46:51,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 62 transitions. [2021-01-07 05:46:51,376 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 62 transitions. Word has length 14 [2021-01-07 05:46:51,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:46:51,376 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 62 transitions. [2021-01-07 05:46:51,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:46:51,377 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 62 transitions. [2021-01-07 05:46:51,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-07 05:46:51,378 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:46:51,378 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:46:51,379 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-07 05:46:51,379 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:46:51,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:46:51,381 INFO L82 PathProgramCache]: Analyzing trace with hash -1275197879, now seen corresponding path program 1 times [2021-01-07 05:46:51,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:46:51,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269357850] [2021-01-07 05:46:51,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:46:51,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:46:51,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:46:51,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269357850] [2021-01-07 05:46:51,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:46:51,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:46:51,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66356347] [2021-01-07 05:46:51,495 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:46:51,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:46:51,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:46:51,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:46:51,497 INFO L87 Difference]: Start difference. First operand 35 states and 62 transitions. Second operand 3 states. [2021-01-07 05:46:51,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:46:51,537 INFO L93 Difference]: Finished difference Result 51 states and 87 transitions. [2021-01-07 05:46:51,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:46:51,540 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2021-01-07 05:46:51,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:46:51,543 INFO L225 Difference]: With dead ends: 51 [2021-01-07 05:46:51,544 INFO L226 Difference]: Without dead ends: 51 [2021-01-07 05:46:51,545 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:46:51,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-01-07 05:46:51,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2021-01-07 05:46:51,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2021-01-07 05:46:51,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 86 transitions. [2021-01-07 05:46:51,565 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 86 transitions. Word has length 14 [2021-01-07 05:46:51,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:46:51,566 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 86 transitions. [2021-01-07 05:46:51,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:46:51,567 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 86 transitions. [2021-01-07 05:46:51,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-01-07 05:46:51,568 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:46:51,569 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:46:51,569 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-07 05:46:51,569 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:46:51,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:46:51,573 INFO L82 PathProgramCache]: Analyzing trace with hash -1577278843, now seen corresponding path program 1 times [2021-01-07 05:46:51,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:46:51,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943744205] [2021-01-07 05:46:51,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:46:51,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:46:51,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:46:51,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943744205] [2021-01-07 05:46:51,670 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:46:51,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:46:51,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101861109] [2021-01-07 05:46:51,672 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:46:51,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:46:51,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:46:51,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:46:51,680 INFO L87 Difference]: Start difference. First operand 49 states and 86 transitions. Second operand 3 states. [2021-01-07 05:46:51,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:46:51,723 INFO L93 Difference]: Finished difference Result 54 states and 89 transitions. [2021-01-07 05:46:51,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:46:51,726 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2021-01-07 05:46:51,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:46:51,729 INFO L225 Difference]: With dead ends: 54 [2021-01-07 05:46:51,729 INFO L226 Difference]: Without dead ends: 54 [2021-01-07 05:46:51,730 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:46:51,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-01-07 05:46:51,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2021-01-07 05:46:51,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2021-01-07 05:46:51,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 88 transitions. [2021-01-07 05:46:51,748 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 88 transitions. Word has length 15 [2021-01-07 05:46:51,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:46:51,748 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 88 transitions. [2021-01-07 05:46:51,749 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:46:51,749 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 88 transitions. [2021-01-07 05:46:51,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-01-07 05:46:51,752 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:46:51,752 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:46:51,753 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-07 05:46:51,753 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:46:51,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:46:51,757 INFO L82 PathProgramCache]: Analyzing trace with hash -876214265, now seen corresponding path program 1 times [2021-01-07 05:46:51,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:46:51,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424805529] [2021-01-07 05:46:51,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:46:51,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:46:51,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:46:51,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424805529] [2021-01-07 05:46:51,866 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:46:51,866 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:46:51,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617740740] [2021-01-07 05:46:51,869 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:46:51,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:46:51,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:46:51,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:46:51,871 INFO L87 Difference]: Start difference. First operand 52 states and 88 transitions. Second operand 3 states. [2021-01-07 05:46:51,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:46:51,896 INFO L93 Difference]: Finished difference Result 95 states and 162 transitions. [2021-01-07 05:46:51,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:46:51,897 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2021-01-07 05:46:51,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:46:51,898 INFO L225 Difference]: With dead ends: 95 [2021-01-07 05:46:51,898 INFO L226 Difference]: Without dead ends: 95 [2021-01-07 05:46:51,899 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:46:51,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-01-07 05:46:51,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 69. [2021-01-07 05:46:51,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2021-01-07 05:46:51,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 117 transitions. [2021-01-07 05:46:51,909 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 117 transitions. Word has length 15 [2021-01-07 05:46:51,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:46:51,909 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 117 transitions. [2021-01-07 05:46:51,910 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:46:51,910 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 117 transitions. [2021-01-07 05:46:51,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-01-07 05:46:51,911 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:46:51,911 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:46:51,911 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-07 05:46:51,912 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:46:51,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:46:51,913 INFO L82 PathProgramCache]: Analyzing trace with hash -1269241275, now seen corresponding path program 1 times [2021-01-07 05:46:51,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:46:51,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766943596] [2021-01-07 05:46:51,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:46:51,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:46:51,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:46:51,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766943596] [2021-01-07 05:46:51,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:46:51,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:46:51,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772729886] [2021-01-07 05:46:51,965 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:46:51,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:46:51,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:46:51,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:46:51,970 INFO L87 Difference]: Start difference. First operand 69 states and 117 transitions. Second operand 3 states. [2021-01-07 05:46:52,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:46:52,008 INFO L93 Difference]: Finished difference Result 97 states and 160 transitions. [2021-01-07 05:46:52,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:46:52,011 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2021-01-07 05:46:52,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:46:52,015 INFO L225 Difference]: With dead ends: 97 [2021-01-07 05:46:52,015 INFO L226 Difference]: Without dead ends: 97 [2021-01-07 05:46:52,015 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:46:52,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-01-07 05:46:52,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 95. [2021-01-07 05:46:52,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2021-01-07 05:46:52,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 159 transitions. [2021-01-07 05:46:52,027 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 159 transitions. Word has length 15 [2021-01-07 05:46:52,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:46:52,027 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 159 transitions. [2021-01-07 05:46:52,027 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:46:52,028 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 159 transitions. [2021-01-07 05:46:52,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-01-07 05:46:52,029 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:46:52,029 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:46:52,030 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-07 05:46:52,030 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:46:52,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:46:52,031 INFO L82 PathProgramCache]: Analyzing trace with hash -1392623778, now seen corresponding path program 1 times [2021-01-07 05:46:52,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:46:52,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235963303] [2021-01-07 05:46:52,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:46:52,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:46:52,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:46:52,088 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235963303] [2021-01-07 05:46:52,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:46:52,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:46:52,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818480735] [2021-01-07 05:46:52,089 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:46:52,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:46:52,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:46:52,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:46:52,091 INFO L87 Difference]: Start difference. First operand 95 states and 159 transitions. Second operand 3 states. [2021-01-07 05:46:52,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:46:52,108 INFO L93 Difference]: Finished difference Result 99 states and 160 transitions. [2021-01-07 05:46:52,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:46:52,109 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2021-01-07 05:46:52,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:46:52,110 INFO L225 Difference]: With dead ends: 99 [2021-01-07 05:46:52,110 INFO L226 Difference]: Without dead ends: 99 [2021-01-07 05:46:52,111 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:46:52,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-01-07 05:46:52,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 97. [2021-01-07 05:46:52,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2021-01-07 05:46:52,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 159 transitions. [2021-01-07 05:46:52,122 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 159 transitions. Word has length 16 [2021-01-07 05:46:52,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:46:52,122 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 159 transitions. [2021-01-07 05:46:52,122 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:46:52,122 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 159 transitions. [2021-01-07 05:46:52,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-01-07 05:46:52,124 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:46:52,124 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:46:52,124 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-07 05:46:52,124 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:46:52,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:46:52,126 INFO L82 PathProgramCache]: Analyzing trace with hash -691559200, now seen corresponding path program 1 times [2021-01-07 05:46:52,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:46:52,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922138475] [2021-01-07 05:46:52,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:46:52,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:46:52,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:46:52,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922138475] [2021-01-07 05:46:52,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:46:52,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:46:52,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350695627] [2021-01-07 05:46:52,171 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:46:52,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:46:52,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:46:52,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:46:52,177 INFO L87 Difference]: Start difference. First operand 97 states and 159 transitions. Second operand 3 states. [2021-01-07 05:46:52,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:46:52,206 INFO L93 Difference]: Finished difference Result 183 states and 292 transitions. [2021-01-07 05:46:52,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:46:52,207 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2021-01-07 05:46:52,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:46:52,210 INFO L225 Difference]: With dead ends: 183 [2021-01-07 05:46:52,210 INFO L226 Difference]: Without dead ends: 183 [2021-01-07 05:46:52,211 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:46:52,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-01-07 05:46:52,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 181. [2021-01-07 05:46:52,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2021-01-07 05:46:52,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 291 transitions. [2021-01-07 05:46:52,263 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 291 transitions. Word has length 16 [2021-01-07 05:46:52,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:46:52,264 INFO L481 AbstractCegarLoop]: Abstraction has 181 states and 291 transitions. [2021-01-07 05:46:52,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:46:52,264 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 291 transitions. [2021-01-07 05:46:52,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-01-07 05:46:52,267 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:46:52,267 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:46:52,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-01-07 05:46:52,268 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:46:52,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:46:52,269 INFO L82 PathProgramCache]: Analyzing trace with hash -298532190, now seen corresponding path program 1 times [2021-01-07 05:46:52,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:46:52,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636436651] [2021-01-07 05:46:52,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:46:52,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:46:52,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:46:52,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636436651] [2021-01-07 05:46:52,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:46:52,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:46:52,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117491938] [2021-01-07 05:46:52,314 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:46:52,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:46:52,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:46:52,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:46:52,316 INFO L87 Difference]: Start difference. First operand 181 states and 291 transitions. Second operand 3 states. [2021-01-07 05:46:52,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:46:52,333 INFO L93 Difference]: Finished difference Result 223 states and 360 transitions. [2021-01-07 05:46:52,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:46:52,334 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2021-01-07 05:46:52,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:46:52,337 INFO L225 Difference]: With dead ends: 223 [2021-01-07 05:46:52,337 INFO L226 Difference]: Without dead ends: 223 [2021-01-07 05:46:52,338 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:46:52,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2021-01-07 05:46:52,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 181. [2021-01-07 05:46:52,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2021-01-07 05:46:52,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 287 transitions. [2021-01-07 05:46:52,354 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 287 transitions. Word has length 16 [2021-01-07 05:46:52,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:46:52,355 INFO L481 AbstractCegarLoop]: Abstraction has 181 states and 287 transitions. [2021-01-07 05:46:52,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:46:52,355 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 287 transitions. [2021-01-07 05:46:52,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-01-07 05:46:52,357 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:46:52,357 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:46:52,358 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-01-07 05:46:52,358 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:46:52,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:46:52,359 INFO L82 PathProgramCache]: Analyzing trace with hash 36716282, now seen corresponding path program 1 times [2021-01-07 05:46:52,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:46:52,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663597575] [2021-01-07 05:46:52,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:46:52,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:46:52,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:46:52,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663597575] [2021-01-07 05:46:52,400 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:46:52,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:46:52,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754859167] [2021-01-07 05:46:52,401 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:46:52,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:46:52,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:46:52,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:46:52,403 INFO L87 Difference]: Start difference. First operand 181 states and 287 transitions. Second operand 3 states. [2021-01-07 05:46:52,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:46:52,422 INFO L93 Difference]: Finished difference Result 323 states and 512 transitions. [2021-01-07 05:46:52,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:46:52,423 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2021-01-07 05:46:52,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:46:52,425 INFO L225 Difference]: With dead ends: 323 [2021-01-07 05:46:52,426 INFO L226 Difference]: Without dead ends: 323 [2021-01-07 05:46:52,426 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:46:52,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2021-01-07 05:46:52,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 257. [2021-01-07 05:46:52,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2021-01-07 05:46:52,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 399 transitions. [2021-01-07 05:46:52,446 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 399 transitions. Word has length 17 [2021-01-07 05:46:52,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:46:52,446 INFO L481 AbstractCegarLoop]: Abstraction has 257 states and 399 transitions. [2021-01-07 05:46:52,447 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:46:52,447 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 399 transitions. [2021-01-07 05:46:52,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-01-07 05:46:52,452 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:46:52,452 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:46:52,452 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-01-07 05:46:52,453 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:46:52,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:46:52,454 INFO L82 PathProgramCache]: Analyzing trace with hash -356310728, now seen corresponding path program 1 times [2021-01-07 05:46:52,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:46:52,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502792431] [2021-01-07 05:46:52,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:46:52,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:46:52,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:46:52,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502792431] [2021-01-07 05:46:52,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:46:52,499 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:46:52,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752637581] [2021-01-07 05:46:52,502 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:46:52,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:46:52,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:46:52,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:46:52,508 INFO L87 Difference]: Start difference. First operand 257 states and 399 transitions. Second operand 3 states. [2021-01-07 05:46:52,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:46:52,542 INFO L93 Difference]: Finished difference Result 347 states and 524 transitions. [2021-01-07 05:46:52,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:46:52,544 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2021-01-07 05:46:52,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:46:52,549 INFO L225 Difference]: With dead ends: 347 [2021-01-07 05:46:52,549 INFO L226 Difference]: Without dead ends: 347 [2021-01-07 05:46:52,550 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:46:52,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2021-01-07 05:46:52,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 345. [2021-01-07 05:46:52,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2021-01-07 05:46:52,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 523 transitions. [2021-01-07 05:46:52,593 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 523 transitions. Word has length 17 [2021-01-07 05:46:52,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:46:52,596 INFO L481 AbstractCegarLoop]: Abstraction has 345 states and 523 transitions. [2021-01-07 05:46:52,597 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:46:52,597 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 523 transitions. [2021-01-07 05:46:52,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-01-07 05:46:52,600 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:46:52,601 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:46:52,601 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-01-07 05:46:52,602 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:46:52,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:46:52,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1138420085, now seen corresponding path program 1 times [2021-01-07 05:46:52,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:46:52,609 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141170309] [2021-01-07 05:46:52,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:46:52,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:46:52,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:46:52,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141170309] [2021-01-07 05:46:52,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:46:52,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:46:52,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24301897] [2021-01-07 05:46:52,650 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:46:52,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:46:52,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:46:52,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:46:52,652 INFO L87 Difference]: Start difference. First operand 345 states and 523 transitions. Second operand 3 states. [2021-01-07 05:46:52,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:46:52,668 INFO L93 Difference]: Finished difference Result 359 states and 532 transitions. [2021-01-07 05:46:52,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:46:52,670 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2021-01-07 05:46:52,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:46:52,673 INFO L225 Difference]: With dead ends: 359 [2021-01-07 05:46:52,673 INFO L226 Difference]: Without dead ends: 359 [2021-01-07 05:46:52,674 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:46:52,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2021-01-07 05:46:52,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 357. [2021-01-07 05:46:52,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2021-01-07 05:46:52,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 531 transitions. [2021-01-07 05:46:52,688 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 531 transitions. Word has length 18 [2021-01-07 05:46:52,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:46:52,688 INFO L481 AbstractCegarLoop]: Abstraction has 357 states and 531 transitions. [2021-01-07 05:46:52,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:46:52,689 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 531 transitions. [2021-01-07 05:46:52,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-01-07 05:46:52,690 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:46:52,691 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:46:52,691 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-01-07 05:46:52,691 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:46:52,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:46:52,692 INFO L82 PathProgramCache]: Analyzing trace with hash 1839484663, now seen corresponding path program 1 times [2021-01-07 05:46:52,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:46:52,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187935938] [2021-01-07 05:46:52,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:46:52,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:46:52,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:46:52,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187935938] [2021-01-07 05:46:52,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:46:52,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:46:52,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998830610] [2021-01-07 05:46:52,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:46:52,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:46:52,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:46:52,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:46:52,737 INFO L87 Difference]: Start difference. First operand 357 states and 531 transitions. Second operand 3 states. [2021-01-07 05:46:52,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:46:52,768 INFO L93 Difference]: Finished difference Result 615 states and 908 transitions. [2021-01-07 05:46:52,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:46:52,770 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2021-01-07 05:46:52,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:46:52,775 INFO L225 Difference]: With dead ends: 615 [2021-01-07 05:46:52,775 INFO L226 Difference]: Without dead ends: 615 [2021-01-07 05:46:52,778 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:46:52,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2021-01-07 05:46:52,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 517. [2021-01-07 05:46:52,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 517 states. [2021-01-07 05:46:52,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 747 transitions. [2021-01-07 05:46:52,799 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 747 transitions. Word has length 18 [2021-01-07 05:46:52,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:46:52,799 INFO L481 AbstractCegarLoop]: Abstraction has 517 states and 747 transitions. [2021-01-07 05:46:52,799 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:46:52,799 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 747 transitions. [2021-01-07 05:46:52,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-01-07 05:46:52,805 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:46:52,806 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:46:52,806 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-01-07 05:46:52,807 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:46:52,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:46:52,808 INFO L82 PathProgramCache]: Analyzing trace with hash 1446457653, now seen corresponding path program 1 times [2021-01-07 05:46:52,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:46:52,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100323073] [2021-01-07 05:46:52,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:46:52,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:46:52,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:46:52,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100323073] [2021-01-07 05:46:52,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:46:52,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:46:52,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517776480] [2021-01-07 05:46:52,888 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:46:52,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:46:52,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:46:52,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:46:52,889 INFO L87 Difference]: Start difference. First operand 517 states and 747 transitions. Second operand 3 states. [2021-01-07 05:46:52,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:46:52,906 INFO L93 Difference]: Finished difference Result 679 states and 948 transitions. [2021-01-07 05:46:52,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:46:52,906 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2021-01-07 05:46:52,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:46:52,923 INFO L225 Difference]: With dead ends: 679 [2021-01-07 05:46:52,923 INFO L226 Difference]: Without dead ends: 679 [2021-01-07 05:46:52,924 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:46:52,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2021-01-07 05:46:52,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 677. [2021-01-07 05:46:52,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 677 states. [2021-01-07 05:46:52,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 947 transitions. [2021-01-07 05:46:52,940 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 947 transitions. Word has length 18 [2021-01-07 05:46:52,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:46:52,941 INFO L481 AbstractCegarLoop]: Abstraction has 677 states and 947 transitions. [2021-01-07 05:46:52,941 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:46:52,941 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 947 transitions. [2021-01-07 05:46:52,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-01-07 05:46:52,943 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:46:52,943 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:46:52,943 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-01-07 05:46:52,943 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:46:52,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:46:52,944 INFO L82 PathProgramCache]: Analyzing trace with hash 1189665389, now seen corresponding path program 1 times [2021-01-07 05:46:52,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:46:52,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989008697] [2021-01-07 05:46:52,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:46:52,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:46:52,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:46:52,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989008697] [2021-01-07 05:46:52,968 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:46:52,968 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:46:52,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179976269] [2021-01-07 05:46:52,969 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:46:52,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:46:52,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:46:52,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:46:52,970 INFO L87 Difference]: Start difference. First operand 677 states and 947 transitions. Second operand 3 states. [2021-01-07 05:46:52,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:46:52,984 INFO L93 Difference]: Finished difference Result 695 states and 948 transitions. [2021-01-07 05:46:52,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:46:52,985 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2021-01-07 05:46:52,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:46:52,989 INFO L225 Difference]: With dead ends: 695 [2021-01-07 05:46:52,989 INFO L226 Difference]: Without dead ends: 695 [2021-01-07 05:46:52,990 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:46:52,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2021-01-07 05:46:53,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 693. [2021-01-07 05:46:53,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 693 states. [2021-01-07 05:46:53,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 947 transitions. [2021-01-07 05:46:53,007 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 947 transitions. Word has length 19 [2021-01-07 05:46:53,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:46:53,007 INFO L481 AbstractCegarLoop]: Abstraction has 693 states and 947 transitions. [2021-01-07 05:46:53,008 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:46:53,008 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 947 transitions. [2021-01-07 05:46:53,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-01-07 05:46:53,009 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:46:53,009 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:46:53,010 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-01-07 05:46:53,010 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:46:53,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:46:53,011 INFO L82 PathProgramCache]: Analyzing trace with hash 1890729967, now seen corresponding path program 1 times [2021-01-07 05:46:53,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:46:53,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595321312] [2021-01-07 05:46:53,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:46:53,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:46:53,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:46:53,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595321312] [2021-01-07 05:46:53,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:46:53,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:46:53,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871280600] [2021-01-07 05:46:53,036 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:46:53,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:46:53,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:46:53,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:46:53,037 INFO L87 Difference]: Start difference. First operand 693 states and 947 transitions. Second operand 3 states. [2021-01-07 05:46:53,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:46:53,052 INFO L93 Difference]: Finished difference Result 1159 states and 1556 transitions. [2021-01-07 05:46:53,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:46:53,053 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2021-01-07 05:46:53,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:46:53,059 INFO L225 Difference]: With dead ends: 1159 [2021-01-07 05:46:53,059 INFO L226 Difference]: Without dead ends: 1159 [2021-01-07 05:46:53,060 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:46:53,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2021-01-07 05:46:53,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 1029. [2021-01-07 05:46:53,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1029 states. [2021-01-07 05:46:53,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1029 states to 1029 states and 1363 transitions. [2021-01-07 05:46:53,086 INFO L78 Accepts]: Start accepts. Automaton has 1029 states and 1363 transitions. Word has length 19 [2021-01-07 05:46:53,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:46:53,086 INFO L481 AbstractCegarLoop]: Abstraction has 1029 states and 1363 transitions. [2021-01-07 05:46:53,086 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:46:53,086 INFO L276 IsEmpty]: Start isEmpty. Operand 1029 states and 1363 transitions. [2021-01-07 05:46:53,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-01-07 05:46:53,089 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:46:53,089 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:46:53,089 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-01-07 05:46:53,089 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:46:53,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:46:53,090 INFO L82 PathProgramCache]: Analyzing trace with hash 1497702957, now seen corresponding path program 1 times [2021-01-07 05:46:53,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:46:53,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957834231] [2021-01-07 05:46:53,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:46:53,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:46:53,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:46:53,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957834231] [2021-01-07 05:46:53,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:46:53,112 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:46:53,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789841849] [2021-01-07 05:46:53,112 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:46:53,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:46:53,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:46:53,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:46:53,114 INFO L87 Difference]: Start difference. First operand 1029 states and 1363 transitions. Second operand 3 states. [2021-01-07 05:46:53,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:46:53,139 INFO L93 Difference]: Finished difference Result 1319 states and 1668 transitions. [2021-01-07 05:46:53,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:46:53,140 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2021-01-07 05:46:53,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:46:53,147 INFO L225 Difference]: With dead ends: 1319 [2021-01-07 05:46:53,147 INFO L226 Difference]: Without dead ends: 1319 [2021-01-07 05:46:53,147 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:46:53,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1319 states. [2021-01-07 05:46:53,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1319 to 1317. [2021-01-07 05:46:53,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1317 states. [2021-01-07 05:46:53,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1317 states to 1317 states and 1667 transitions. [2021-01-07 05:46:53,183 INFO L78 Accepts]: Start accepts. Automaton has 1317 states and 1667 transitions. Word has length 19 [2021-01-07 05:46:53,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:46:53,183 INFO L481 AbstractCegarLoop]: Abstraction has 1317 states and 1667 transitions. [2021-01-07 05:46:53,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:46:53,184 INFO L276 IsEmpty]: Start isEmpty. Operand 1317 states and 1667 transitions. [2021-01-07 05:46:53,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-01-07 05:46:53,187 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:46:53,187 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:46:53,187 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-01-07 05:46:53,188 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:46:53,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:46:53,189 INFO L82 PathProgramCache]: Analyzing trace with hash -1516697142, now seen corresponding path program 1 times [2021-01-07 05:46:53,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:46:53,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966928647] [2021-01-07 05:46:53,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:46:53,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:46:53,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:46:53,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966928647] [2021-01-07 05:46:53,219 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:46:53,219 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:46:53,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222612105] [2021-01-07 05:46:53,220 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:46:53,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:46:53,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:46:53,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:46:53,222 INFO L87 Difference]: Start difference. First operand 1317 states and 1667 transitions. Second operand 3 states. [2021-01-07 05:46:53,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:46:53,242 INFO L93 Difference]: Finished difference Result 1351 states and 1668 transitions. [2021-01-07 05:46:53,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:46:53,243 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2021-01-07 05:46:53,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:46:53,252 INFO L225 Difference]: With dead ends: 1351 [2021-01-07 05:46:53,252 INFO L226 Difference]: Without dead ends: 1351 [2021-01-07 05:46:53,253 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:46:53,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1351 states. [2021-01-07 05:46:53,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1351 to 1349. [2021-01-07 05:46:53,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1349 states. [2021-01-07 05:46:53,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1349 states to 1349 states and 1667 transitions. [2021-01-07 05:46:53,294 INFO L78 Accepts]: Start accepts. Automaton has 1349 states and 1667 transitions. Word has length 20 [2021-01-07 05:46:53,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:46:53,295 INFO L481 AbstractCegarLoop]: Abstraction has 1349 states and 1667 transitions. [2021-01-07 05:46:53,295 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:46:53,298 INFO L276 IsEmpty]: Start isEmpty. Operand 1349 states and 1667 transitions. [2021-01-07 05:46:53,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-01-07 05:46:53,301 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:46:53,301 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:46:53,301 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-01-07 05:46:53,301 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:46:53,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:46:53,302 INFO L82 PathProgramCache]: Analyzing trace with hash -815632564, now seen corresponding path program 1 times [2021-01-07 05:46:53,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:46:53,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377658425] [2021-01-07 05:46:53,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:46:53,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:46:53,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:46:53,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377658425] [2021-01-07 05:46:53,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:46:53,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:46:53,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479777594] [2021-01-07 05:46:53,329 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:46:53,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:46:53,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:46:53,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:46:53,331 INFO L87 Difference]: Start difference. First operand 1349 states and 1667 transitions. Second operand 3 states. [2021-01-07 05:46:53,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:46:53,365 INFO L93 Difference]: Finished difference Result 2181 states and 2595 transitions. [2021-01-07 05:46:53,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:46:53,368 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2021-01-07 05:46:53,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:46:53,395 INFO L225 Difference]: With dead ends: 2181 [2021-01-07 05:46:53,395 INFO L226 Difference]: Without dead ends: 2181 [2021-01-07 05:46:53,396 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:46:53,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2181 states. [2021-01-07 05:46:53,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2181 to 2053. [2021-01-07 05:46:53,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2053 states. [2021-01-07 05:46:53,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2053 states to 2053 states and 2467 transitions. [2021-01-07 05:46:53,520 INFO L78 Accepts]: Start accepts. Automaton has 2053 states and 2467 transitions. Word has length 20 [2021-01-07 05:46:53,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:46:53,521 INFO L481 AbstractCegarLoop]: Abstraction has 2053 states and 2467 transitions. [2021-01-07 05:46:53,521 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:46:53,521 INFO L276 IsEmpty]: Start isEmpty. Operand 2053 states and 2467 transitions. [2021-01-07 05:46:53,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-01-07 05:46:53,527 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:46:53,527 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:46:53,528 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-01-07 05:46:53,529 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:46:53,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:46:53,530 INFO L82 PathProgramCache]: Analyzing trace with hash -1208659574, now seen corresponding path program 1 times [2021-01-07 05:46:53,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:46:53,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579327765] [2021-01-07 05:46:53,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:46:53,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:46:53,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:46:53,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579327765] [2021-01-07 05:46:53,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:46:53,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:46:53,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034574149] [2021-01-07 05:46:53,569 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:46:53,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:46:53,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:46:53,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:46:53,571 INFO L87 Difference]: Start difference. First operand 2053 states and 2467 transitions. Second operand 3 states. [2021-01-07 05:46:53,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:46:53,610 INFO L93 Difference]: Finished difference Result 2563 states and 2882 transitions. [2021-01-07 05:46:53,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:46:53,611 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2021-01-07 05:46:53,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:46:53,611 INFO L225 Difference]: With dead ends: 2563 [2021-01-07 05:46:53,611 INFO L226 Difference]: Without dead ends: 0 [2021-01-07 05:46:53,612 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:46:53,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-01-07 05:46:53,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-01-07 05:46:53,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-01-07 05:46:53,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-01-07 05:46:53,613 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2021-01-07 05:46:53,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:46:53,614 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-01-07 05:46:53,614 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:46:53,614 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-01-07 05:46:53,614 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-07 05:46:53,614 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-01-07 05:46:53,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.01 05:46:53 BoogieIcfgContainer [2021-01-07 05:46:53,623 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-07 05:46:53,624 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-07 05:46:53,625 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-07 05:46:53,625 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-07 05:46:53,626 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 05:46:50" (3/4) ... [2021-01-07 05:46:53,633 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-01-07 05:46:53,659 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-01-07 05:46:53,660 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-01-07 05:46:53,660 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-01-07 05:46:53,661 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-07 05:46:53,766 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/locks/test_locks_7.c-witness.graphml [2021-01-07 05:46:53,766 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-07 05:46:53,772 INFO L168 Benchmark]: Toolchain (without parser) took 4842.53 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 126.3 MB in the beginning and 137.0 MB in the end (delta: -10.7 MB). Peak memory consumption was 20.5 MB. Max. memory is 8.0 GB. [2021-01-07 05:46:53,772 INFO L168 Benchmark]: CDTParser took 0.55 ms. Allocated memory is still 125.8 MB. Free memory is still 80.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-07 05:46:53,773 INFO L168 Benchmark]: CACSL2BoogieTranslator took 378.05 ms. Allocated memory is still 151.0 MB. Free memory was 126.1 MB in the beginning and 116.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-01-07 05:46:53,777 INFO L168 Benchmark]: Boogie Procedure Inliner took 65.57 ms. Allocated memory is still 151.0 MB. Free memory was 116.0 MB in the beginning and 114.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-07 05:46:53,777 INFO L168 Benchmark]: Boogie Preprocessor took 43.12 ms. Allocated memory is still 151.0 MB. Free memory was 114.5 MB in the beginning and 113.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-07 05:46:53,777 INFO L168 Benchmark]: RCFGBuilder took 951.99 ms. Allocated memory is still 151.0 MB. Free memory was 113.2 MB in the beginning and 95.9 MB in the end (delta: 17.3 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2021-01-07 05:46:53,778 INFO L168 Benchmark]: TraceAbstraction took 3244.40 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 95.6 MB in the beginning and 140.7 MB in the end (delta: -45.1 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-01-07 05:46:53,778 INFO L168 Benchmark]: Witness Printer took 141.90 ms. Allocated memory is still 181.4 MB. Free memory was 140.7 MB in the beginning and 137.0 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-01-07 05:46:53,781 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.55 ms. Allocated memory is still 125.8 MB. Free memory is still 80.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 378.05 ms. Allocated memory is still 151.0 MB. Free memory was 126.1 MB in the beginning and 116.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 65.57 ms. Allocated memory is still 151.0 MB. Free memory was 116.0 MB in the beginning and 114.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 43.12 ms. Allocated memory is still 151.0 MB. Free memory was 114.5 MB in the beginning and 113.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 951.99 ms. Allocated memory is still 151.0 MB. Free memory was 113.2 MB in the beginning and 95.9 MB in the end (delta: 17.3 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3244.40 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 95.6 MB in the beginning and 140.7 MB in the end (delta: -45.1 MB). There was no memory consumed. Max. memory is 8.0 GB. * Witness Printer took 141.90 ms. Allocated memory is still 181.4 MB. Free memory was 140.7 MB in the beginning and 137.0 MB in the end (delta: 3.7 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: 121]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 6]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.0s, OverallIterations: 21, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1221 SDtfs, 583 SDslu, 725 SDs, 0 SdLazy, 102 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 61 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2053occurred in iteration=20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 21 MinimizatonAttempts, 528 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 337 NumberOfCodeBlocks, 337 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 316 ConstructedInterpolants, 0 QuantifiedInterpolants, 10219 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 21 InterpolantComputations, 21 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...