/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/locks/test_locks_6.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 11:36:34,880 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 11:36:34,882 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 11:36:34,940 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 11:36:34,941 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 11:36:34,944 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 11:36:34,948 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 11:36:34,954 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 11:36:34,958 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 11:36:34,964 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 11:36:34,968 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 11:36:34,970 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 11:36:34,970 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 11:36:34,973 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 11:36:34,975 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 11:36:34,977 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 11:36:34,979 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 11:36:34,992 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 11:36:35,001 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 11:36:35,008 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 11:36:35,010 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 11:36:35,012 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 11:36:35,014 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 11:36:35,017 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 11:36:35,027 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 11:36:35,047 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 11:36:35,048 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 11:36:35,049 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 11:36:35,050 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-01-06 11:36:35,101 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 11:36:35,101 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 11:36:35,106 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 11:36:35,107 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 11:36:35,107 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 11:36:35,107 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 11:36:35,107 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 11:36:35,107 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 11:36:35,108 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 11:36:35,108 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 11:36:35,109 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 11:36:35,109 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 11:36:35,109 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 11:36:35,110 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 11:36:35,110 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 11:36:35,110 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 11:36:35,110 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 11:36:35,110 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 11:36:35,111 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 11:36:35,111 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 11:36:35,111 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 11:36:35,111 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 11:36:35,111 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 11:36:35,112 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 11:36:35,112 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 11:36:35,112 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 11:36:35,492 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 11:36:35,520 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 11:36:35,523 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 11:36:35,526 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 11:36:35,527 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 11:36:35,528 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/locks/test_locks_6.c [2021-01-06 11:36:35,607 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/fdd25f59b/584412a532e64716b276920ed4a0dae9/FLAG84ac79ae7 [2021-01-06 11:36:36,299 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 11:36:36,300 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/locks/test_locks_6.c [2021-01-06 11:36:36,313 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/fdd25f59b/584412a532e64716b276920ed4a0dae9/FLAG84ac79ae7 [2021-01-06 11:36:36,634 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/fdd25f59b/584412a532e64716b276920ed4a0dae9 [2021-01-06 11:36:36,637 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 11:36:36,639 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 11:36:36,641 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 11:36:36,641 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 11:36:36,647 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 11:36:36,648 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 11:36:36" (1/1) ... [2021-01-06 11:36:36,649 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7afc6186 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:36:36, skipping insertion in model container [2021-01-06 11:36:36,649 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 11:36:36" (1/1) ... [2021-01-06 11:36:36,658 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 11:36:36,677 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: lhs: VariableLHS[~cond~0,] left hand side expression in assignment: lhs: VariableLHS[~lk1~0,] left hand side expression in assignment: lhs: VariableLHS[~lk2~0,] left hand side expression in assignment: lhs: VariableLHS[~lk3~0,] left hand side expression in assignment: lhs: VariableLHS[~lk4~0,] left hand side expression in assignment: lhs: VariableLHS[~lk5~0,] left hand side expression in assignment: lhs: VariableLHS[~lk6~0,] left hand side expression in assignment: lhs: VariableLHS[~lk1~0,] left hand side expression in assignment: lhs: VariableLHS[~lk2~0,] left hand side expression in assignment: lhs: VariableLHS[~lk3~0,] left hand side expression in assignment: lhs: VariableLHS[~lk4~0,] left hand side expression in assignment: lhs: VariableLHS[~lk5~0,] left hand side expression in assignment: lhs: VariableLHS[~lk6~0,] left hand side expression in assignment: lhs: VariableLHS[~lk1~0,] left hand side expression in assignment: lhs: VariableLHS[~lk2~0,] left hand side expression in assignment: lhs: VariableLHS[~lk3~0,] left hand side expression in assignment: lhs: VariableLHS[~lk4~0,] left hand side expression in assignment: lhs: VariableLHS[~lk5~0,] left hand side expression in assignment: lhs: VariableLHS[~lk6~0,] [2021-01-06 11:36:36,841 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/locks/test_locks_6.c[2544,2557] [2021-01-06 11:36:36,846 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 11:36:36,856 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: lhs: VariableLHS[~cond~0,] left hand side expression in assignment: lhs: VariableLHS[~lk1~0,] left hand side expression in assignment: lhs: VariableLHS[~lk2~0,] left hand side expression in assignment: lhs: VariableLHS[~lk3~0,] left hand side expression in assignment: lhs: VariableLHS[~lk4~0,] left hand side expression in assignment: lhs: VariableLHS[~lk5~0,] left hand side expression in assignment: lhs: VariableLHS[~lk6~0,] left hand side expression in assignment: lhs: VariableLHS[~lk1~0,] left hand side expression in assignment: lhs: VariableLHS[~lk2~0,] left hand side expression in assignment: lhs: VariableLHS[~lk3~0,] left hand side expression in assignment: lhs: VariableLHS[~lk4~0,] left hand side expression in assignment: lhs: VariableLHS[~lk5~0,] left hand side expression in assignment: lhs: VariableLHS[~lk6~0,] left hand side expression in assignment: lhs: VariableLHS[~lk1~0,] left hand side expression in assignment: lhs: VariableLHS[~lk2~0,] left hand side expression in assignment: lhs: VariableLHS[~lk3~0,] left hand side expression in assignment: lhs: VariableLHS[~lk4~0,] left hand side expression in assignment: lhs: VariableLHS[~lk5~0,] left hand side expression in assignment: lhs: VariableLHS[~lk6~0,] [2021-01-06 11:36:36,879 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/locks/test_locks_6.c[2544,2557] [2021-01-06 11:36:36,880 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 11:36:36,896 INFO L208 MainTranslator]: Completed translation [2021-01-06 11:36:36,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:36:36 WrapperNode [2021-01-06 11:36:36,896 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 11:36:36,898 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 11:36:36,898 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 11:36:36,898 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 11:36:36,906 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:36:36" (1/1) ... [2021-01-06 11:36:36,913 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:36:36" (1/1) ... [2021-01-06 11:36:36,936 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 11:36:36,937 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 11:36:36,937 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 11:36:36,937 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 11:36:36,946 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:36:36" (1/1) ... [2021-01-06 11:36:36,947 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:36:36" (1/1) ... [2021-01-06 11:36:36,949 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:36:36" (1/1) ... [2021-01-06 11:36:36,949 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:36:36" (1/1) ... [2021-01-06 11:36:36,953 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:36:36" (1/1) ... [2021-01-06 11:36:36,958 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:36:36" (1/1) ... [2021-01-06 11:36:36,960 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:36:36" (1/1) ... [2021-01-06 11:36:36,962 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 11:36:36,963 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 11:36:36,964 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 11:36:36,964 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 11:36:36,965 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:36:36" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 11:36:37,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 11:36:37,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 11:36:37,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 11:36:37,071 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 11:36:37,465 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 11:36:37,466 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-01-06 11:36:37,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 11:36:37 BoogieIcfgContainer [2021-01-06 11:36:37,474 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 11:36:37,476 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 11:36:37,476 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 11:36:37,484 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 11:36:37,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 11:36:36" (1/3) ... [2021-01-06 11:36:37,485 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34a2f5fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 11:36:37, skipping insertion in model container [2021-01-06 11:36:37,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:36:36" (2/3) ... [2021-01-06 11:36:37,489 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34a2f5fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 11:36:37, skipping insertion in model container [2021-01-06 11:36:37,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 11:36:37" (3/3) ... [2021-01-06 11:36:37,495 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_6.c [2021-01-06 11:36:37,509 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 11:36:37,521 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 11:36:37,553 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-01-06 11:36:37,585 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 11:36:37,586 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 11:36:37,586 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 11:36:37,586 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 11:36:37,586 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 11:36:37,586 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 11:36:37,586 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 11:36:37,586 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 11:36:37,602 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2021-01-06 11:36:37,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-06 11:36:37,609 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:36:37,610 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 11:36:37,610 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:36:37,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:36:37,618 INFO L82 PathProgramCache]: Analyzing trace with hash -721193823, now seen corresponding path program 1 times [2021-01-06 11:36:37,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:36:37,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872993118] [2021-01-06 11:36:37,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:36:37,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:36:37,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:36:37,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872993118] [2021-01-06 11:36:37,864 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:36:37,864 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:36:37,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332259666] [2021-01-06 11:36:37,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:36:37,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:36:37,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:36:37,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:37,896 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 3 states. [2021-01-06 11:36:37,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:36:37,960 INFO L93 Difference]: Finished difference Result 59 states and 97 transitions. [2021-01-06 11:36:37,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:36:37,962 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2021-01-06 11:36:37,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:36:37,974 INFO L225 Difference]: With dead ends: 59 [2021-01-06 11:36:37,974 INFO L226 Difference]: Without dead ends: 45 [2021-01-06 11:36:37,978 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:37,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-01-06 11:36:38,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 31. [2021-01-06 11:36:38,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-01-06 11:36:38,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 54 transitions. [2021-01-06 11:36:38,022 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 54 transitions. Word has length 13 [2021-01-06 11:36:38,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:36:38,023 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 54 transitions. [2021-01-06 11:36:38,023 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:36:38,023 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 54 transitions. [2021-01-06 11:36:38,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-06 11:36:38,024 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:36:38,024 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 11:36:38,025 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 11:36:38,025 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:36:38,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:36:38,026 INFO L82 PathProgramCache]: Analyzing trace with hash -41135453, now seen corresponding path program 1 times [2021-01-06 11:36:38,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:36:38,026 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133459571] [2021-01-06 11:36:38,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:36:38,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:36:38,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:36:38,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133459571] [2021-01-06 11:36:38,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:36:38,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:36:38,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063827528] [2021-01-06 11:36:38,079 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:36:38,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:36:38,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:36:38,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:38,081 INFO L87 Difference]: Start difference. First operand 31 states and 54 transitions. Second operand 3 states. [2021-01-06 11:36:38,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:36:38,108 INFO L93 Difference]: Finished difference Result 74 states and 129 transitions. [2021-01-06 11:36:38,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:36:38,109 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2021-01-06 11:36:38,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:36:38,111 INFO L225 Difference]: With dead ends: 74 [2021-01-06 11:36:38,111 INFO L226 Difference]: Without dead ends: 45 [2021-01-06 11:36:38,112 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:38,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-01-06 11:36:38,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 43. [2021-01-06 11:36:38,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2021-01-06 11:36:38,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 74 transitions. [2021-01-06 11:36:38,120 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 74 transitions. Word has length 13 [2021-01-06 11:36:38,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:36:38,120 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 74 transitions. [2021-01-06 11:36:38,120 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:36:38,121 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 74 transitions. [2021-01-06 11:36:38,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-06 11:36:38,121 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:36:38,122 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 11:36:38,122 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 11:36:38,122 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:36:38,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:36:38,123 INFO L82 PathProgramCache]: Analyzing trace with hash -881957389, now seen corresponding path program 1 times [2021-01-06 11:36:38,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:36:38,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728154879] [2021-01-06 11:36:38,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:36:38,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:36:38,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:36:38,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728154879] [2021-01-06 11:36:38,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:36:38,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:36:38,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318485760] [2021-01-06 11:36:38,201 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:36:38,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:36:38,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:36:38,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:38,206 INFO L87 Difference]: Start difference. First operand 43 states and 74 transitions. Second operand 3 states. [2021-01-06 11:36:38,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:36:38,255 INFO L93 Difference]: Finished difference Result 69 states and 114 transitions. [2021-01-06 11:36:38,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:36:38,256 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2021-01-06 11:36:38,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:36:38,257 INFO L225 Difference]: With dead ends: 69 [2021-01-06 11:36:38,257 INFO L226 Difference]: Without dead ends: 48 [2021-01-06 11:36:38,259 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:38,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-01-06 11:36:38,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2021-01-06 11:36:38,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2021-01-06 11:36:38,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 76 transitions. [2021-01-06 11:36:38,276 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 76 transitions. Word has length 14 [2021-01-06 11:36:38,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:36:38,277 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 76 transitions. [2021-01-06 11:36:38,277 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:36:38,277 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 76 transitions. [2021-01-06 11:36:38,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-06 11:36:38,278 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:36:38,278 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 11:36:38,278 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-06 11:36:38,278 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:36:38,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:36:38,279 INFO L82 PathProgramCache]: Analyzing trace with hash -1274984399, now seen corresponding path program 1 times [2021-01-06 11:36:38,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:36:38,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023824485] [2021-01-06 11:36:38,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:36:38,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:36:38,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:36:38,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023824485] [2021-01-06 11:36:38,321 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:36:38,321 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:36:38,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887466205] [2021-01-06 11:36:38,322 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:36:38,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:36:38,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:36:38,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:38,323 INFO L87 Difference]: Start difference. First operand 46 states and 76 transitions. Second operand 3 states. [2021-01-06 11:36:38,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:36:38,346 INFO L93 Difference]: Finished difference Result 85 states and 141 transitions. [2021-01-06 11:36:38,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:36:38,347 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2021-01-06 11:36:38,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:36:38,349 INFO L225 Difference]: With dead ends: 85 [2021-01-06 11:36:38,349 INFO L226 Difference]: Without dead ends: 83 [2021-01-06 11:36:38,349 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:38,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-01-06 11:36:38,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 61. [2021-01-06 11:36:38,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2021-01-06 11:36:38,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 101 transitions. [2021-01-06 11:36:38,359 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 101 transitions. Word has length 14 [2021-01-06 11:36:38,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:36:38,360 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 101 transitions. [2021-01-06 11:36:38,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:36:38,360 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 101 transitions. [2021-01-06 11:36:38,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-06 11:36:38,361 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:36:38,361 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 11:36:38,362 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-06 11:36:38,362 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:36:38,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:36:38,363 INFO L82 PathProgramCache]: Analyzing trace with hash -594926029, now seen corresponding path program 1 times [2021-01-06 11:36:38,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:36:38,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457138245] [2021-01-06 11:36:38,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:36:38,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:36:38,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:36:38,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457138245] [2021-01-06 11:36:38,423 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:36:38,423 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:36:38,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397856065] [2021-01-06 11:36:38,423 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:36:38,424 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:36:38,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:36:38,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:38,426 INFO L87 Difference]: Start difference. First operand 61 states and 101 transitions. Second operand 3 states. [2021-01-06 11:36:38,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:36:38,447 INFO L93 Difference]: Finished difference Result 141 states and 235 transitions. [2021-01-06 11:36:38,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:36:38,448 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2021-01-06 11:36:38,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:36:38,449 INFO L225 Difference]: With dead ends: 141 [2021-01-06 11:36:38,449 INFO L226 Difference]: Without dead ends: 85 [2021-01-06 11:36:38,450 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:38,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-01-06 11:36:38,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 83. [2021-01-06 11:36:38,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2021-01-06 11:36:38,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 135 transitions. [2021-01-06 11:36:38,463 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 135 transitions. Word has length 14 [2021-01-06 11:36:38,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:36:38,464 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 135 transitions. [2021-01-06 11:36:38,464 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:36:38,464 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 135 transitions. [2021-01-06 11:36:38,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-01-06 11:36:38,465 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:36:38,465 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 11:36:38,466 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-06 11:36:38,466 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:36:38,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:36:38,467 INFO L82 PathProgramCache]: Analyzing trace with hash -869595720, now seen corresponding path program 1 times [2021-01-06 11:36:38,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:36:38,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219029833] [2021-01-06 11:36:38,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:36:38,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:36:38,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:36:38,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219029833] [2021-01-06 11:36:38,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:36:38,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:36:38,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048797801] [2021-01-06 11:36:38,517 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:36:38,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:36:38,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:36:38,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:38,518 INFO L87 Difference]: Start difference. First operand 83 states and 135 transitions. Second operand 3 states. [2021-01-06 11:36:38,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:36:38,549 INFO L93 Difference]: Finished difference Result 126 states and 202 transitions. [2021-01-06 11:36:38,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:36:38,551 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2021-01-06 11:36:38,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:36:38,553 INFO L225 Difference]: With dead ends: 126 [2021-01-06 11:36:38,553 INFO L226 Difference]: Without dead ends: 87 [2021-01-06 11:36:38,554 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:38,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-01-06 11:36:38,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 85. [2021-01-06 11:36:38,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2021-01-06 11:36:38,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 135 transitions. [2021-01-06 11:36:38,574 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 135 transitions. Word has length 15 [2021-01-06 11:36:38,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:36:38,575 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 135 transitions. [2021-01-06 11:36:38,575 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:36:38,575 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 135 transitions. [2021-01-06 11:36:38,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-01-06 11:36:38,576 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:36:38,576 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 11:36:38,577 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-06 11:36:38,580 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:36:38,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:36:38,581 INFO L82 PathProgramCache]: Analyzing trace with hash -1262622730, now seen corresponding path program 1 times [2021-01-06 11:36:38,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:36:38,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797617408] [2021-01-06 11:36:38,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:36:38,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:36:38,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:36:38,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797617408] [2021-01-06 11:36:38,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:36:38,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:36:38,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037978939] [2021-01-06 11:36:38,612 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:36:38,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:36:38,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:36:38,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:38,614 INFO L87 Difference]: Start difference. First operand 85 states and 135 transitions. Second operand 3 states. [2021-01-06 11:36:38,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:36:38,632 INFO L93 Difference]: Finished difference Result 237 states and 377 transitions. [2021-01-06 11:36:38,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:36:38,633 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2021-01-06 11:36:38,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:36:38,635 INFO L225 Difference]: With dead ends: 237 [2021-01-06 11:36:38,635 INFO L226 Difference]: Without dead ends: 159 [2021-01-06 11:36:38,636 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:38,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-01-06 11:36:38,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 157. [2021-01-06 11:36:38,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2021-01-06 11:36:38,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 243 transitions. [2021-01-06 11:36:38,652 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 243 transitions. Word has length 15 [2021-01-06 11:36:38,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:36:38,652 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 243 transitions. [2021-01-06 11:36:38,652 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:36:38,653 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 243 transitions. [2021-01-06 11:36:38,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-01-06 11:36:38,654 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:36:38,654 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 11:36:38,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-06 11:36:38,655 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:36:38,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:36:38,655 INFO L82 PathProgramCache]: Analyzing trace with hash -1942681100, now seen corresponding path program 1 times [2021-01-06 11:36:38,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:36:38,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652777590] [2021-01-06 11:36:38,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:36:38,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:36:38,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:36:38,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652777590] [2021-01-06 11:36:38,686 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:36:38,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:36:38,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208360129] [2021-01-06 11:36:38,687 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:36:38,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:36:38,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:36:38,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:38,691 INFO L87 Difference]: Start difference. First operand 157 states and 243 transitions. Second operand 3 states. [2021-01-06 11:36:38,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:36:38,708 INFO L93 Difference]: Finished difference Result 193 states and 301 transitions. [2021-01-06 11:36:38,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:36:38,709 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2021-01-06 11:36:38,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:36:38,710 INFO L225 Difference]: With dead ends: 193 [2021-01-06 11:36:38,710 INFO L226 Difference]: Without dead ends: 191 [2021-01-06 11:36:38,711 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:38,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2021-01-06 11:36:38,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 157. [2021-01-06 11:36:38,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2021-01-06 11:36:38,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 239 transitions. [2021-01-06 11:36:38,726 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 239 transitions. Word has length 15 [2021-01-06 11:36:38,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:36:38,727 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 239 transitions. [2021-01-06 11:36:38,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:36:38,727 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 239 transitions. [2021-01-06 11:36:38,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-01-06 11:36:38,728 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:36:38,728 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 11:36:38,729 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-06 11:36:38,729 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:36:38,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:36:38,730 INFO L82 PathProgramCache]: Analyzing trace with hash -486383640, now seen corresponding path program 1 times [2021-01-06 11:36:38,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:36:38,730 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36264347] [2021-01-06 11:36:38,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:36:38,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:36:38,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:36:38,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36264347] [2021-01-06 11:36:38,782 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:36:38,782 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:36:38,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731923650] [2021-01-06 11:36:38,787 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:36:38,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:36:38,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:36:38,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:38,789 INFO L87 Difference]: Start difference. First operand 157 states and 239 transitions. Second operand 3 states. [2021-01-06 11:36:38,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:36:38,830 INFO L93 Difference]: Finished difference Result 277 states and 425 transitions. [2021-01-06 11:36:38,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:36:38,834 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2021-01-06 11:36:38,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:36:38,837 INFO L225 Difference]: With dead ends: 277 [2021-01-06 11:36:38,838 INFO L226 Difference]: Without dead ends: 275 [2021-01-06 11:36:38,840 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:38,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2021-01-06 11:36:38,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 225. [2021-01-06 11:36:38,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2021-01-06 11:36:38,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 335 transitions. [2021-01-06 11:36:38,883 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 335 transitions. Word has length 16 [2021-01-06 11:36:38,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:36:38,887 INFO L481 AbstractCegarLoop]: Abstraction has 225 states and 335 transitions. [2021-01-06 11:36:38,887 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:36:38,887 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 335 transitions. [2021-01-06 11:36:38,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-01-06 11:36:38,889 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:36:38,890 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 11:36:38,892 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-01-06 11:36:38,892 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:36:38,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:36:38,893 INFO L82 PathProgramCache]: Analyzing trace with hash 193674730, now seen corresponding path program 1 times [2021-01-06 11:36:38,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:36:38,894 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785354649] [2021-01-06 11:36:38,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:36:38,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:36:38,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:36:38,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785354649] [2021-01-06 11:36:38,924 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:36:38,924 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:36:38,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879020444] [2021-01-06 11:36:38,925 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:36:38,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:36:38,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:36:38,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:38,926 INFO L87 Difference]: Start difference. First operand 225 states and 335 transitions. Second operand 3 states. [2021-01-06 11:36:38,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:36:38,952 INFO L93 Difference]: Finished difference Result 517 states and 769 transitions. [2021-01-06 11:36:38,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:36:38,952 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2021-01-06 11:36:38,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:36:38,954 INFO L225 Difference]: With dead ends: 517 [2021-01-06 11:36:38,955 INFO L226 Difference]: Without dead ends: 299 [2021-01-06 11:36:38,956 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:38,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2021-01-06 11:36:38,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 297. [2021-01-06 11:36:38,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 297 states. [2021-01-06 11:36:38,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 427 transitions. [2021-01-06 11:36:38,979 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 427 transitions. Word has length 16 [2021-01-06 11:36:38,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:36:38,980 INFO L481 AbstractCegarLoop]: Abstraction has 297 states and 427 transitions. [2021-01-06 11:36:38,980 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:36:38,980 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 427 transitions. [2021-01-06 11:36:38,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-01-06 11:36:38,982 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:36:38,983 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 11:36:38,983 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-01-06 11:36:38,983 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:36:38,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:36:38,984 INFO L82 PathProgramCache]: Analyzing trace with hash 2102192011, now seen corresponding path program 1 times [2021-01-06 11:36:38,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:36:38,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288696417] [2021-01-06 11:36:38,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:36:38,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:36:39,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:36:39,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288696417] [2021-01-06 11:36:39,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:36:39,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:36:39,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544680061] [2021-01-06 11:36:39,030 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:36:39,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:36:39,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:36:39,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:39,032 INFO L87 Difference]: Start difference. First operand 297 states and 427 transitions. Second operand 3 states. [2021-01-06 11:36:39,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:36:39,082 INFO L93 Difference]: Finished difference Result 453 states and 649 transitions. [2021-01-06 11:36:39,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:36:39,097 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2021-01-06 11:36:39,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:36:39,100 INFO L225 Difference]: With dead ends: 453 [2021-01-06 11:36:39,100 INFO L226 Difference]: Without dead ends: 311 [2021-01-06 11:36:39,101 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:39,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2021-01-06 11:36:39,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 309. [2021-01-06 11:36:39,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309 states. [2021-01-06 11:36:39,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 435 transitions. [2021-01-06 11:36:39,136 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 435 transitions. Word has length 17 [2021-01-06 11:36:39,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:36:39,137 INFO L481 AbstractCegarLoop]: Abstraction has 309 states and 435 transitions. [2021-01-06 11:36:39,137 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:36:39,137 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 435 transitions. [2021-01-06 11:36:39,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-01-06 11:36:39,139 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:36:39,140 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 11:36:39,140 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-01-06 11:36:39,140 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:36:39,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:36:39,141 INFO L82 PathProgramCache]: Analyzing trace with hash 1709165001, now seen corresponding path program 1 times [2021-01-06 11:36:39,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:36:39,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778093926] [2021-01-06 11:36:39,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:36:39,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:36:39,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:36:39,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778093926] [2021-01-06 11:36:39,213 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:36:39,213 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:36:39,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568300422] [2021-01-06 11:36:39,214 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:36:39,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:36:39,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:36:39,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:39,219 INFO L87 Difference]: Start difference. First operand 309 states and 435 transitions. Second operand 3 states. [2021-01-06 11:36:39,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:36:39,280 INFO L93 Difference]: Finished difference Result 521 states and 733 transitions. [2021-01-06 11:36:39,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:36:39,280 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2021-01-06 11:36:39,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:36:39,287 INFO L225 Difference]: With dead ends: 521 [2021-01-06 11:36:39,287 INFO L226 Difference]: Without dead ends: 519 [2021-01-06 11:36:39,288 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:39,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2021-01-06 11:36:39,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 453. [2021-01-06 11:36:39,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 453 states. [2021-01-06 11:36:39,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 619 transitions. [2021-01-06 11:36:39,343 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 619 transitions. Word has length 17 [2021-01-06 11:36:39,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:36:39,343 INFO L481 AbstractCegarLoop]: Abstraction has 453 states and 619 transitions. [2021-01-06 11:36:39,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:36:39,343 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 619 transitions. [2021-01-06 11:36:39,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-01-06 11:36:39,354 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:36:39,354 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 11:36:39,355 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-01-06 11:36:39,355 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:36:39,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:36:39,356 INFO L82 PathProgramCache]: Analyzing trace with hash -1905743925, now seen corresponding path program 1 times [2021-01-06 11:36:39,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:36:39,357 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337536345] [2021-01-06 11:36:39,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:36:39,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:36:39,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:36:39,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337536345] [2021-01-06 11:36:39,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:36:39,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:36:39,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433049449] [2021-01-06 11:36:39,392 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:36:39,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:36:39,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:36:39,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:39,394 INFO L87 Difference]: Start difference. First operand 453 states and 619 transitions. Second operand 3 states. [2021-01-06 11:36:39,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:36:39,426 INFO L93 Difference]: Finished difference Result 1017 states and 1373 transitions. [2021-01-06 11:36:39,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:36:39,427 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2021-01-06 11:36:39,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:36:39,430 INFO L225 Difference]: With dead ends: 1017 [2021-01-06 11:36:39,431 INFO L226 Difference]: Without dead ends: 583 [2021-01-06 11:36:39,433 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:39,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2021-01-06 11:36:39,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 581. [2021-01-06 11:36:39,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 581 states. [2021-01-06 11:36:39,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 755 transitions. [2021-01-06 11:36:39,471 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 755 transitions. Word has length 17 [2021-01-06 11:36:39,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:36:39,472 INFO L481 AbstractCegarLoop]: Abstraction has 581 states and 755 transitions. [2021-01-06 11:36:39,475 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:36:39,476 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 755 transitions. [2021-01-06 11:36:39,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-01-06 11:36:39,480 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:36:39,480 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 11:36:39,480 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-01-06 11:36:39,480 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:36:39,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:36:39,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1444723487, now seen corresponding path program 1 times [2021-01-06 11:36:39,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:36:39,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475451744] [2021-01-06 11:36:39,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:36:39,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:36:39,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:36:39,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475451744] [2021-01-06 11:36:39,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:36:39,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:36:39,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443403808] [2021-01-06 11:36:39,543 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:36:39,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:36:39,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:36:39,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:39,548 INFO L87 Difference]: Start difference. First operand 581 states and 755 transitions. Second operand 3 states. [2021-01-06 11:36:39,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:36:39,579 INFO L93 Difference]: Finished difference Result 873 states and 1125 transitions. [2021-01-06 11:36:39,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:36:39,579 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2021-01-06 11:36:39,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:36:39,583 INFO L225 Difference]: With dead ends: 873 [2021-01-06 11:36:39,583 INFO L226 Difference]: Without dead ends: 599 [2021-01-06 11:36:39,584 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:39,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2021-01-06 11:36:39,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 597. [2021-01-06 11:36:39,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 597 states. [2021-01-06 11:36:39,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 755 transitions. [2021-01-06 11:36:39,606 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 755 transitions. Word has length 18 [2021-01-06 11:36:39,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:36:39,606 INFO L481 AbstractCegarLoop]: Abstraction has 597 states and 755 transitions. [2021-01-06 11:36:39,606 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:36:39,606 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 755 transitions. [2021-01-06 11:36:39,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-01-06 11:36:39,608 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:36:39,608 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 11:36:39,608 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-01-06 11:36:39,608 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:36:39,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:36:39,609 INFO L82 PathProgramCache]: Analyzing trace with hash 1051696477, now seen corresponding path program 1 times [2021-01-06 11:36:39,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:36:39,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124472248] [2021-01-06 11:36:39,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:36:39,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:36:39,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:36:39,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124472248] [2021-01-06 11:36:39,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:36:39,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:36:39,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308848424] [2021-01-06 11:36:39,634 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:36:39,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:36:39,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:36:39,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:39,635 INFO L87 Difference]: Start difference. First operand 597 states and 755 transitions. Second operand 3 states. [2021-01-06 11:36:39,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:36:39,674 INFO L93 Difference]: Finished difference Result 967 states and 1204 transitions. [2021-01-06 11:36:39,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:36:39,674 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2021-01-06 11:36:39,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:36:39,679 INFO L225 Difference]: With dead ends: 967 [2021-01-06 11:36:39,679 INFO L226 Difference]: Without dead ends: 965 [2021-01-06 11:36:39,684 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:39,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 965 states. [2021-01-06 11:36:39,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 965 to 901. [2021-01-06 11:36:39,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 901 states. [2021-01-06 11:36:39,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1107 transitions. [2021-01-06 11:36:39,719 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1107 transitions. Word has length 18 [2021-01-06 11:36:39,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:36:39,720 INFO L481 AbstractCegarLoop]: Abstraction has 901 states and 1107 transitions. [2021-01-06 11:36:39,720 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:36:39,720 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1107 transitions. [2021-01-06 11:36:39,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-01-06 11:36:39,722 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:36:39,722 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 11:36:39,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-01-06 11:36:39,723 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:36:39,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:36:39,723 INFO L82 PathProgramCache]: Analyzing trace with hash 1731754847, now seen corresponding path program 1 times [2021-01-06 11:36:39,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:36:39,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670389452] [2021-01-06 11:36:39,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:36:39,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:36:39,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:36:39,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670389452] [2021-01-06 11:36:39,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:36:39,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:36:39,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539569278] [2021-01-06 11:36:39,749 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:36:39,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:36:39,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:36:39,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:39,751 INFO L87 Difference]: Start difference. First operand 901 states and 1107 transitions. Second operand 3 states. [2021-01-06 11:36:39,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:36:39,783 INFO L93 Difference]: Finished difference Result 1989 states and 2387 transitions. [2021-01-06 11:36:39,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:36:39,784 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2021-01-06 11:36:39,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:36:39,784 INFO L225 Difference]: With dead ends: 1989 [2021-01-06 11:36:39,784 INFO L226 Difference]: Without dead ends: 0 [2021-01-06 11:36:39,786 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:39,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-01-06 11:36:39,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-01-06 11:36:39,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-01-06 11:36:39,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-01-06 11:36:39,788 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2021-01-06 11:36:39,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:36:39,788 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-01-06 11:36:39,788 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:36:39,788 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-01-06 11:36:39,788 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-06 11:36:39,788 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-01-06 11:36:39,791 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-01-06 11:36:39,809 INFO L189 CegarLoopUtils]: For program point L60-1(lines 29 104) no Hoare annotation was computed. [2021-01-06 11:36:39,809 INFO L189 CegarLoopUtils]: For program point L85(line 85) no Hoare annotation was computed. [2021-01-06 11:36:39,809 INFO L189 CegarLoopUtils]: For program point L52-1(lines 29 104) no Hoare annotation was computed. [2021-01-06 11:36:39,809 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-01-06 11:36:39,809 INFO L189 CegarLoopUtils]: For program point L94-1(lines 29 104) no Hoare annotation was computed. [2021-01-06 11:36:39,809 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-01-06 11:36:39,810 INFO L189 CegarLoopUtils]: For program point L95(line 95) no Hoare annotation was computed. [2021-01-06 11:36:39,810 INFO L189 CegarLoopUtils]: For program point L79-1(lines 29 104) no Hoare annotation was computed. [2021-01-06 11:36:39,811 INFO L189 CegarLoopUtils]: For program point L80(line 80) no Hoare annotation was computed. [2021-01-06 11:36:39,811 INFO L192 CegarLoopUtils]: At program point L105(lines 7 109) the Hoare annotation is: true [2021-01-06 11:36:39,811 INFO L189 CegarLoopUtils]: For program point L31(lines 31 33) no Hoare annotation was computed. [2021-01-06 11:36:39,811 INFO L189 CegarLoopUtils]: For program point L64-1(lines 29 104) no Hoare annotation was computed. [2021-01-06 11:36:39,814 INFO L189 CegarLoopUtils]: For program point L89-1(lines 29 104) no Hoare annotation was computed. [2021-01-06 11:36:39,815 INFO L189 CegarLoopUtils]: For program point L56-1(lines 29 104) no Hoare annotation was computed. [2021-01-06 11:36:39,815 INFO L189 CegarLoopUtils]: For program point L48(lines 48 50) no Hoare annotation was computed. [2021-01-06 11:36:39,815 INFO L189 CegarLoopUtils]: For program point L48-2(lines 29 104) no Hoare annotation was computed. [2021-01-06 11:36:39,815 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2021-01-06 11:36:39,815 INFO L189 CegarLoopUtils]: For program point L90(line 90) no Hoare annotation was computed. [2021-01-06 11:36:39,815 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 107) no Hoare annotation was computed. [2021-01-06 11:36:39,816 INFO L189 CegarLoopUtils]: For program point L74-1(lines 29 104) no Hoare annotation was computed. [2021-01-06 11:36:39,816 INFO L192 CegarLoopUtils]: At program point L99-1(lines 29 104) the Hoare annotation is: true [2021-01-06 11:36:39,816 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-01-06 11:36:39,816 INFO L192 CegarLoopUtils]: At program point L108(lines 6 109) the Hoare annotation is: true [2021-01-06 11:36:39,816 INFO L189 CegarLoopUtils]: For program point L75(line 75) no Hoare annotation was computed. [2021-01-06 11:36:39,816 INFO L189 CegarLoopUtils]: For program point L100(line 100) no Hoare annotation was computed. [2021-01-06 11:36:39,817 INFO L185 CegarLoopUtils]: At program point L100-1(lines 7 109) the Hoare annotation is: false [2021-01-06 11:36:39,818 INFO L189 CegarLoopUtils]: For program point L84-1(lines 29 104) no Hoare annotation was computed. [2021-01-06 11:36:39,818 INFO L189 CegarLoopUtils]: For program point L68-1(lines 29 104) no Hoare annotation was computed. [2021-01-06 11:36:39,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 11:36:39 BoogieIcfgContainer [2021-01-06 11:36:39,831 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 11:36:39,832 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 11:36:39,832 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 11:36:39,832 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 11:36:39,833 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 11:36:37" (3/4) ... [2021-01-06 11:36:39,836 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-01-06 11:36:39,854 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-01-06 11:36:39,854 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-01-06 11:36:39,855 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 11:36:39,855 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 11:36:39,942 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/locks/test_locks_6.c-witness.graphml [2021-01-06 11:36:39,942 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 11:36:39,945 INFO L168 Benchmark]: Toolchain (without parser) took 3305.31 ms. Allocated memory was 172.0 MB in the beginning and 206.6 MB in the end (delta: 34.6 MB). Free memory was 146.2 MB in the beginning and 104.1 MB in the end (delta: 42.1 MB). Peak memory consumption was 76.9 MB. Max. memory is 8.0 GB. [2021-01-06 11:36:39,945 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 172.0 MB. Free memory is still 144.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 11:36:39,946 INFO L168 Benchmark]: CACSL2BoogieTranslator took 256.16 ms. Allocated memory is still 172.0 MB. Free memory was 146.0 MB in the beginning and 136.1 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-01-06 11:36:39,946 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.19 ms. Allocated memory is still 172.0 MB. Free memory was 135.9 MB in the beginning and 134.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 11:36:39,947 INFO L168 Benchmark]: Boogie Preprocessor took 25.95 ms. Allocated memory is still 172.0 MB. Free memory was 134.5 MB in the beginning and 133.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 11:36:39,947 INFO L168 Benchmark]: RCFGBuilder took 510.78 ms. Allocated memory is still 172.0 MB. Free memory was 133.2 MB in the beginning and 150.6 MB in the end (delta: -17.3 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2021-01-06 11:36:39,948 INFO L168 Benchmark]: TraceAbstraction took 2355.25 ms. Allocated memory was 172.0 MB in the beginning and 206.6 MB in the end (delta: 34.6 MB). Free memory was 150.6 MB in the beginning and 107.8 MB in the end (delta: 42.7 MB). Peak memory consumption was 76.8 MB. Max. memory is 8.0 GB. [2021-01-06 11:36:39,948 INFO L168 Benchmark]: Witness Printer took 110.72 ms. Allocated memory is still 206.6 MB. Free memory was 107.3 MB in the beginning and 104.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-01-06 11:36:39,952 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 172.0 MB. Free memory is still 144.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 256.16 ms. Allocated memory is still 172.0 MB. Free memory was 146.0 MB in the beginning and 136.1 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 38.19 ms. Allocated memory is still 172.0 MB. Free memory was 135.9 MB in the beginning and 134.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 25.95 ms. Allocated memory is still 172.0 MB. Free memory was 134.5 MB in the beginning and 133.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 510.78 ms. Allocated memory is still 172.0 MB. Free memory was 133.2 MB in the beginning and 150.6 MB in the end (delta: -17.3 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2355.25 ms. Allocated memory was 172.0 MB in the beginning and 206.6 MB in the end (delta: 34.6 MB). Free memory was 150.6 MB in the beginning and 107.8 MB in the end (delta: 42.7 MB). Peak memory consumption was 76.8 MB. Max. memory is 8.0 GB. * Witness Printer took 110.72 ms. Allocated memory is still 206.6 MB. Free memory was 107.3 MB in the beginning and 104.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 107]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.2s, OverallIterations: 16, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 828 SDtfs, 391 SDslu, 527 SDs, 0 SdLazy, 85 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=901occurred in iteration=15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 16 MinimizatonAttempts, 268 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 73 NumberOfFragments, 4 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 250 NumberOfCodeBlocks, 250 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 234 ConstructedInterpolants, 0 QuantifiedInterpolants, 6810 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...