/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/openssl-simplified/s3_srvr_1b.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 11:35:40,851 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 11:35:40,854 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 11:35:40,891 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 11:35:40,892 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 11:35:40,893 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 11:35:40,895 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 11:35:40,898 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 11:35:40,900 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 11:35:40,902 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 11:35:40,903 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 11:35:40,905 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 11:35:40,906 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 11:35:40,907 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 11:35:40,909 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 11:35:40,910 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 11:35:40,912 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 11:35:40,913 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 11:35:40,915 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 11:35:40,918 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 11:35:40,920 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 11:35:40,922 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 11:35:40,924 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 11:35:40,925 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 11:35:40,929 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 11:35:40,934 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 11:35:40,935 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 11:35:40,936 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 11:35:40,938 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 11:35:40,939 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 11:35:40,940 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 11:35:40,941 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 11:35:40,941 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 11:35:40,941 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 11:35:40,943 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 11:35:40,944 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 11:35:40,945 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 11:35:40,996 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 11:35:40,996 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 11:35:40,998 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 11:35:40,998 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 11:35:40,999 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 11:35:41,000 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 11:35:41,001 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 11:35:41,001 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 11:35:41,001 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 11:35:41,001 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 11:35:41,002 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 11:35:41,003 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 11:35:41,003 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 11:35:41,003 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 11:35:41,004 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 11:35:41,004 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 11:35:41,004 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 11:35:41,004 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 11:35:41,005 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 11:35:41,005 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 11:35:41,005 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 11:35:41,006 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 11:35:41,006 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 11:35:41,006 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 11:35:41,006 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 11:35:41,007 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 11:35:41,424 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 11:35:41,459 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 11:35:41,463 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 11:35:41,464 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 11:35:41,466 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 11:35:41,467 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/openssl-simplified/s3_srvr_1b.cil.c [2021-01-06 11:35:41,554 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/dde2d0398/8bfcf25228b446d69d5edc6ce9594510/FLAGd1bc143f5 [2021-01-06 11:35:42,148 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 11:35:42,149 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/openssl-simplified/s3_srvr_1b.cil.c [2021-01-06 11:35:42,162 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/dde2d0398/8bfcf25228b446d69d5edc6ce9594510/FLAGd1bc143f5 [2021-01-06 11:35:42,498 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/dde2d0398/8bfcf25228b446d69d5edc6ce9594510 [2021-01-06 11:35:42,501 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 11:35:42,504 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 11:35:42,508 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 11:35:42,509 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 11:35:42,513 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 11:35:42,514 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 11:35:42" (1/1) ... [2021-01-06 11:35:42,517 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9f2542f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:35:42, skipping insertion in model container [2021-01-06 11:35:42,517 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 11:35:42" (1/1) ... [2021-01-06 11:35:42,527 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 11:35:42,556 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: lhs: VariableLHS[~s__state~0,] left hand side expression in assignment: lhs: VariableLHS[~blastFlag~0,] left hand side expression in assignment: lhs: VariableLHS[~blastFlag~0,] left hand side expression in assignment: lhs: VariableLHS[~s__state~0,] left hand side expression in assignment: lhs: VariableLHS[~s__state~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___1~0,] left hand side expression in assignment: lhs: VariableLHS[~s__state~0,] left hand side expression in assignment: lhs: VariableLHS[~s__state~0,] left hand side expression in assignment: lhs: VariableLHS[~blastFlag~0,] left hand side expression in assignment: lhs: VariableLHS[~s__state~0,] left hand side expression in assignment: lhs: VariableLHS[~blastFlag~0,] left hand side expression in assignment: lhs: VariableLHS[~blastFlag~0,] left hand side expression in assignment: lhs: VariableLHS[~s__state~0,] [2021-01-06 11:35:42,839 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/openssl-simplified/s3_srvr_1b.cil.c[7766,7779] [2021-01-06 11:35:42,856 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 11:35:42,874 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: lhs: VariableLHS[~s__state~0,] left hand side expression in assignment: lhs: VariableLHS[~blastFlag~0,] left hand side expression in assignment: lhs: VariableLHS[~blastFlag~0,] left hand side expression in assignment: lhs: VariableLHS[~s__state~0,] left hand side expression in assignment: lhs: VariableLHS[~s__state~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___1~0,] left hand side expression in assignment: lhs: VariableLHS[~s__state~0,] left hand side expression in assignment: lhs: VariableLHS[~s__state~0,] left hand side expression in assignment: lhs: VariableLHS[~blastFlag~0,] left hand side expression in assignment: lhs: VariableLHS[~s__state~0,] left hand side expression in assignment: lhs: VariableLHS[~blastFlag~0,] left hand side expression in assignment: lhs: VariableLHS[~blastFlag~0,] left hand side expression in assignment: lhs: VariableLHS[~s__state~0,] [2021-01-06 11:35:42,899 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/openssl-simplified/s3_srvr_1b.cil.c[7766,7779] [2021-01-06 11:35:42,900 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 11:35:42,918 INFO L208 MainTranslator]: Completed translation [2021-01-06 11:35:42,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:35:42 WrapperNode [2021-01-06 11:35:42,919 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 11:35:42,920 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 11:35:42,921 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 11:35:42,921 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 11:35:42,931 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:35:42" (1/1) ... [2021-01-06 11:35:42,940 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:35:42" (1/1) ... [2021-01-06 11:35:42,962 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 11:35:42,964 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 11:35:42,964 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 11:35:42,964 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 11:35:42,974 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:35:42" (1/1) ... [2021-01-06 11:35:42,975 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:35:42" (1/1) ... [2021-01-06 11:35:42,976 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:35:42" (1/1) ... [2021-01-06 11:35:42,977 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:35:42" (1/1) ... [2021-01-06 11:35:42,981 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:35:42" (1/1) ... [2021-01-06 11:35:42,986 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:35:42" (1/1) ... [2021-01-06 11:35:42,987 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:35:42" (1/1) ... [2021-01-06 11:35:42,989 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 11:35:42,990 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 11:35:42,990 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 11:35:42,990 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 11:35:42,991 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:35:42" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 11:35:43,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 11:35:43,102 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 11:35:43,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 11:35:43,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 11:35:43,424 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 11:35:43,424 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-01-06 11:35:43,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 11:35:43 BoogieIcfgContainer [2021-01-06 11:35:43,427 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 11:35:43,429 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 11:35:43,430 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 11:35:43,433 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 11:35:43,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 11:35:42" (1/3) ... [2021-01-06 11:35:43,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51059851 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 11:35:43, skipping insertion in model container [2021-01-06 11:35:43,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:35:42" (2/3) ... [2021-01-06 11:35:43,436 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51059851 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 11:35:43, skipping insertion in model container [2021-01-06 11:35:43,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 11:35:43" (3/3) ... [2021-01-06 11:35:43,438 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_1b.cil.c [2021-01-06 11:35:43,446 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 11:35:43,451 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 11:35:43,487 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-01-06 11:35:43,540 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 11:35:43,541 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 11:35:43,541 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 11:35:43,541 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 11:35:43,541 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 11:35:43,541 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 11:35:43,542 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 11:35:43,542 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 11:35:43,558 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2021-01-06 11:35:43,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-01-06 11:35:43,564 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:35:43,565 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-01-06 11:35:43,565 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:35:43,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:35:43,573 INFO L82 PathProgramCache]: Analyzing trace with hash 28699838, now seen corresponding path program 1 times [2021-01-06 11:35:43,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:35:43,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064942460] [2021-01-06 11:35:43,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:35:43,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:35:43,778 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 11:35:43,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064942460] [2021-01-06 11:35:43,780 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:35:43,780 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:35:43,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833905965] [2021-01-06 11:35:43,786 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:35:43,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:35:43,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:35:43,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:35:43,805 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 3 states. [2021-01-06 11:35:43,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:35:43,906 INFO L93 Difference]: Finished difference Result 65 states and 109 transitions. [2021-01-06 11:35:43,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:35:43,909 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2021-01-06 11:35:43,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:35:43,920 INFO L225 Difference]: With dead ends: 65 [2021-01-06 11:35:43,920 INFO L226 Difference]: Without dead ends: 35 [2021-01-06 11:35:43,924 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:35:43,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-01-06 11:35:43,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-01-06 11:35:43,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-01-06 11:35:43,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 49 transitions. [2021-01-06 11:35:43,967 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 49 transitions. Word has length 5 [2021-01-06 11:35:43,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:35:43,967 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 49 transitions. [2021-01-06 11:35:43,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:35:43,967 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 49 transitions. [2021-01-06 11:35:43,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-06 11:35:43,968 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:35:43,968 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 11:35:43,969 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 11:35:43,969 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:35:43,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:35:43,970 INFO L82 PathProgramCache]: Analyzing trace with hash -1523322994, now seen corresponding path program 1 times [2021-01-06 11:35:43,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:35:43,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053064754] [2021-01-06 11:35:43,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:35:44,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:35:44,047 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:35:44,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053064754] [2021-01-06 11:35:44,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:35:44,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:35:44,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712802292] [2021-01-06 11:35:44,052 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:35:44,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:35:44,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:35:44,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:35:44,056 INFO L87 Difference]: Start difference. First operand 35 states and 49 transitions. Second operand 3 states. [2021-01-06 11:35:44,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:35:44,146 INFO L93 Difference]: Finished difference Result 66 states and 99 transitions. [2021-01-06 11:35:44,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:35:44,148 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2021-01-06 11:35:44,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:35:44,151 INFO L225 Difference]: With dead ends: 66 [2021-01-06 11:35:44,152 INFO L226 Difference]: Without dead ends: 48 [2021-01-06 11:35:44,154 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:35:44,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-01-06 11:35:44,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2021-01-06 11:35:44,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2021-01-06 11:35:44,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 67 transitions. [2021-01-06 11:35:44,179 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 67 transitions. Word has length 10 [2021-01-06 11:35:44,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:35:44,180 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 67 transitions. [2021-01-06 11:35:44,180 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:35:44,180 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 67 transitions. [2021-01-06 11:35:44,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-01-06 11:35:44,183 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:35:44,184 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 11:35:44,185 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 11:35:44,185 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:35:44,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:35:44,189 INFO L82 PathProgramCache]: Analyzing trace with hash 864936600, now seen corresponding path program 1 times [2021-01-06 11:35:44,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:35:44,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543781778] [2021-01-06 11:35:44,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:35:44,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:35:44,286 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:35:44,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543781778] [2021-01-06 11:35:44,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:35:44,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:35:44,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597180316] [2021-01-06 11:35:44,288 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:35:44,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:35:44,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:35:44,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:35:44,293 INFO L87 Difference]: Start difference. First operand 48 states and 67 transitions. Second operand 3 states. [2021-01-06 11:35:44,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:35:44,379 INFO L93 Difference]: Finished difference Result 89 states and 127 transitions. [2021-01-06 11:35:44,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:35:44,380 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2021-01-06 11:35:44,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:35:44,383 INFO L225 Difference]: With dead ends: 89 [2021-01-06 11:35:44,383 INFO L226 Difference]: Without dead ends: 58 [2021-01-06 11:35:44,384 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 11:35:44,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-01-06 11:35:44,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2021-01-06 11:35:44,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2021-01-06 11:35:44,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 76 transitions. [2021-01-06 11:35:44,416 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 76 transitions. Word has length 17 [2021-01-06 11:35:44,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:35:44,421 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 76 transitions. [2021-01-06 11:35:44,421 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:35:44,422 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 76 transitions. [2021-01-06 11:35:44,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-01-06 11:35:44,423 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:35:44,423 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 11:35:44,423 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-06 11:35:44,424 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:35:44,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:35:44,429 INFO L82 PathProgramCache]: Analyzing trace with hash 163872022, now seen corresponding path program 1 times [2021-01-06 11:35:44,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:35:44,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751899406] [2021-01-06 11:35:44,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:35:44,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:35:44,500 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-01-06 11:35:44,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751899406] [2021-01-06 11:35:44,500 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:35:44,501 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:35:44,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394074738] [2021-01-06 11:35:44,501 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:35:44,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:35:44,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:35:44,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:35:44,504 INFO L87 Difference]: Start difference. First operand 56 states and 76 transitions. Second operand 3 states. [2021-01-06 11:35:44,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:35:44,566 INFO L93 Difference]: Finished difference Result 117 states and 164 transitions. [2021-01-06 11:35:44,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:35:44,566 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2021-01-06 11:35:44,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:35:44,568 INFO L225 Difference]: With dead ends: 117 [2021-01-06 11:35:44,568 INFO L226 Difference]: Without dead ends: 78 [2021-01-06 11:35:44,569 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 11:35:44,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-01-06 11:35:44,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2021-01-06 11:35:44,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2021-01-06 11:35:44,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 106 transitions. [2021-01-06 11:35:44,581 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 106 transitions. Word has length 17 [2021-01-06 11:35:44,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:35:44,581 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 106 transitions. [2021-01-06 11:35:44,581 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:35:44,581 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 106 transitions. [2021-01-06 11:35:44,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-01-06 11:35:44,582 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:35:44,583 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 11:35:44,583 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-06 11:35:44,583 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:35:44,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:35:44,584 INFO L82 PathProgramCache]: Analyzing trace with hash -1464847913, now seen corresponding path program 1 times [2021-01-06 11:35:44,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:35:44,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861796661] [2021-01-06 11:35:44,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:35:44,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:35:44,650 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-01-06 11:35:44,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861796661] [2021-01-06 11:35:44,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:35:44,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:35:44,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718973838] [2021-01-06 11:35:44,652 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:35:44,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:35:44,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:35:44,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:35:44,653 INFO L87 Difference]: Start difference. First operand 76 states and 106 transitions. Second operand 3 states. [2021-01-06 11:35:44,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:35:44,729 INFO L93 Difference]: Finished difference Result 146 states and 204 transitions. [2021-01-06 11:35:44,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:35:44,730 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2021-01-06 11:35:44,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:35:44,731 INFO L225 Difference]: With dead ends: 146 [2021-01-06 11:35:44,731 INFO L226 Difference]: Without dead ends: 58 [2021-01-06 11:35:44,732 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 11:35:44,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-01-06 11:35:44,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2021-01-06 11:35:44,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2021-01-06 11:35:44,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 69 transitions. [2021-01-06 11:35:44,741 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 69 transitions. Word has length 20 [2021-01-06 11:35:44,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:35:44,741 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 69 transitions. [2021-01-06 11:35:44,742 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:35:44,742 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 69 transitions. [2021-01-06 11:35:44,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-01-06 11:35:44,743 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:35:44,743 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 11:35:44,743 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-06 11:35:44,744 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:35:44,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:35:44,744 INFO L82 PathProgramCache]: Analyzing trace with hash -12347436, now seen corresponding path program 1 times [2021-01-06 11:35:44,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:35:44,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513276340] [2021-01-06 11:35:44,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:35:44,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:35:44,786 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-01-06 11:35:44,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513276340] [2021-01-06 11:35:44,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:35:44,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:35:44,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483777069] [2021-01-06 11:35:44,788 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:35:44,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:35:44,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:35:44,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:35:44,789 INFO L87 Difference]: Start difference. First operand 56 states and 69 transitions. Second operand 3 states. [2021-01-06 11:35:44,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:35:44,806 INFO L93 Difference]: Finished difference Result 90 states and 108 transitions. [2021-01-06 11:35:44,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:35:44,807 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2021-01-06 11:35:44,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:35:44,807 INFO L225 Difference]: With dead ends: 90 [2021-01-06 11:35:44,807 INFO L226 Difference]: Without dead ends: 0 [2021-01-06 11:35:44,808 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 11:35:44,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-01-06 11:35:44,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-01-06 11:35:44,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-01-06 11:35:44,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-01-06 11:35:44,809 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 34 [2021-01-06 11:35:44,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:35:44,809 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-01-06 11:35:44,809 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:35:44,810 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-01-06 11:35:44,810 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-06 11:35:44,810 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-06 11:35:44,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-01-06 11:35:45,149 INFO L189 CegarLoopUtils]: For program point L97(lines 97 99) no Hoare annotation was computed. [2021-01-06 11:35:45,150 INFO L189 CegarLoopUtils]: For program point L31(lines 31 126) no Hoare annotation was computed. [2021-01-06 11:35:45,150 INFO L185 CegarLoopUtils]: At program point L27(lines 26 129) the Hoare annotation is: (or (= ULTIMATE.start_main_~blastFlag~0 2) (= ULTIMATE.start_main_~blastFlag~0 0)) [2021-01-06 11:35:45,151 INFO L185 CegarLoopUtils]: At program point L52(lines 51 110) the Hoare annotation is: (let ((.cse0 (<= 8640 ULTIMATE.start_main_~s__state~0))) (or (and .cse0 (not (= ULTIMATE.start_main_~s__hit~0 0)) (<= ULTIMATE.start_main_~blastFlag~0 3)) (and .cse0 (= ULTIMATE.start_main_~blastFlag~0 2)) (and .cse0 (= ULTIMATE.start_main_~blastFlag~0 0)))) [2021-01-06 11:35:45,151 INFO L185 CegarLoopUtils]: At program point L48(lines 47 112) the Hoare annotation is: (let ((.cse0 (<= 8640 ULTIMATE.start_main_~s__state~0))) (or (and .cse0 (not (= ULTIMATE.start_main_~s__hit~0 0)) (<= ULTIMATE.start_main_~blastFlag~0 3)) (and .cse0 (= ULTIMATE.start_main_~blastFlag~0 2)) (and .cse0 (= ULTIMATE.start_main_~blastFlag~0 0)))) [2021-01-06 11:35:45,151 INFO L185 CegarLoopUtils]: At program point L98(lines 10 142) the Hoare annotation is: false [2021-01-06 11:35:45,151 INFO L185 CegarLoopUtils]: At program point L32(lines 31 126) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~s__state~0 8512))) (or (and .cse0 (= ULTIMATE.start_main_~blastFlag~0 2)) (and .cse0 (= ULTIMATE.start_main_~blastFlag~0 0)))) [2021-01-06 11:35:45,151 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2021-01-06 11:35:45,152 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-01-06 11:35:45,152 INFO L189 CegarLoopUtils]: For program point L94-1(lines 55 108) no Hoare annotation was computed. [2021-01-06 11:35:45,152 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-01-06 11:35:45,152 INFO L189 CegarLoopUtils]: For program point L90-1(lines 55 108) no Hoare annotation was computed. [2021-01-06 11:35:45,152 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 140) no Hoare annotation was computed. [2021-01-06 11:35:45,152 INFO L189 CegarLoopUtils]: For program point L20(line 20) no Hoare annotation was computed. [2021-01-06 11:35:45,153 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-01-06 11:35:45,153 INFO L189 CegarLoopUtils]: For program point L79-1(lines 55 108) no Hoare annotation was computed. [2021-01-06 11:35:45,153 INFO L192 CegarLoopUtils]: At program point L141(lines 10 142) the Hoare annotation is: true [2021-01-06 11:35:45,153 INFO L189 CegarLoopUtils]: For program point L71(lines 71 75) no Hoare annotation was computed. [2021-01-06 11:35:45,153 INFO L189 CegarLoopUtils]: For program point L26(lines 26 129) no Hoare annotation was computed. [2021-01-06 11:35:45,153 INFO L189 CegarLoopUtils]: For program point L59-1(lines 55 108) no Hoare annotation was computed. [2021-01-06 11:35:45,153 INFO L189 CegarLoopUtils]: For program point L51(lines 51 110) no Hoare annotation was computed. [2021-01-06 11:35:45,154 INFO L189 CegarLoopUtils]: For program point L47(lines 47 112) no Hoare annotation was computed. [2021-01-06 11:35:45,154 INFO L192 CegarLoopUtils]: At program point L138(lines 10 142) the Hoare annotation is: true [2021-01-06 11:35:45,154 INFO L185 CegarLoopUtils]: At program point L101(lines 19 136) the Hoare annotation is: (or (and (<= 8640 ULTIMATE.start_main_~s__state~0) (not (= ULTIMATE.start_main_~s__hit~0 0)) (<= ULTIMATE.start_main_~blastFlag~0 3)) (= ULTIMATE.start_main_~blastFlag~0 2) (= ULTIMATE.start_main_~blastFlag~0 0)) [2021-01-06 11:35:45,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 11:35:45 BoogieIcfgContainer [2021-01-06 11:35:45,177 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 11:35:45,177 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 11:35:45,178 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 11:35:45,178 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 11:35:45,178 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 11:35:43" (3/4) ... [2021-01-06 11:35:45,182 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-01-06 11:35:45,196 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-01-06 11:35:45,196 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-01-06 11:35:45,197 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 11:35:45,197 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 11:35:45,322 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/openssl-simplified/s3_srvr_1b.cil.c-witness.graphml [2021-01-06 11:35:45,322 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 11:35:45,325 INFO L168 Benchmark]: Toolchain (without parser) took 2819.94 ms. Allocated memory is still 154.1 MB. Free memory was 128.5 MB in the beginning and 78.9 MB in the end (delta: 49.6 MB). Peak memory consumption was 50.9 MB. Max. memory is 8.0 GB. [2021-01-06 11:35:45,325 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 154.1 MB. Free memory is still 137.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 11:35:45,326 INFO L168 Benchmark]: CACSL2BoogieTranslator took 411.03 ms. Allocated memory is still 154.1 MB. Free memory was 128.3 MB in the beginning and 118.2 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-01-06 11:35:45,327 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.39 ms. Allocated memory is still 154.1 MB. Free memory was 118.2 MB in the beginning and 116.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 11:35:45,328 INFO L168 Benchmark]: Boogie Preprocessor took 25.34 ms. Allocated memory is still 154.1 MB. Free memory was 116.7 MB in the beginning and 115.7 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 11:35:45,329 INFO L168 Benchmark]: RCFGBuilder took 437.07 ms. Allocated memory is still 154.1 MB. Free memory was 115.6 MB in the beginning and 129.7 MB in the end (delta: -14.1 MB). Peak memory consumption was 12.2 MB. Max. memory is 8.0 GB. [2021-01-06 11:35:45,330 INFO L168 Benchmark]: TraceAbstraction took 1747.55 ms. Allocated memory is still 154.1 MB. Free memory was 129.3 MB in the beginning and 81.5 MB in the end (delta: 47.8 MB). Peak memory consumption was 47.1 MB. Max. memory is 8.0 GB. [2021-01-06 11:35:45,331 INFO L168 Benchmark]: Witness Printer took 144.88 ms. Allocated memory is still 154.1 MB. Free memory was 81.5 MB in the beginning and 78.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-01-06 11:35:45,336 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 154.1 MB. Free memory is still 137.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 411.03 ms. Allocated memory is still 154.1 MB. Free memory was 128.3 MB in the beginning and 118.2 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 42.39 ms. Allocated memory is still 154.1 MB. Free memory was 118.2 MB in the beginning and 116.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 25.34 ms. Allocated memory is still 154.1 MB. Free memory was 116.7 MB in the beginning and 115.7 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 437.07 ms. Allocated memory is still 154.1 MB. Free memory was 115.6 MB in the beginning and 129.7 MB in the end (delta: -14.1 MB). Peak memory consumption was 12.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1747.55 ms. Allocated memory is still 154.1 MB. Free memory was 129.3 MB in the beginning and 81.5 MB in the end (delta: 47.8 MB). Peak memory consumption was 47.1 MB. Max. memory is 8.0 GB. * Witness Printer took 144.88 ms. Allocated memory is still 154.1 MB. Free memory was 81.5 MB in the beginning and 78.9 MB in the end (delta: 2.6 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: 140]: 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: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: (((8640 <= s__state && !(s__hit == 0)) && blastFlag <= 3) || blastFlag == 2) || blastFlag == 0 - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: (s__state == 8512 && blastFlag == 2) || (s__state == 8512 && blastFlag == 0) - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: (((8640 <= s__state && !(s__hit == 0)) && blastFlag <= 3) || (8640 <= s__state && blastFlag == 2)) || (8640 <= s__state && blastFlag == 0) - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: blastFlag == 2 || blastFlag == 0 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 51]: Loop Invariant Derived loop invariant: (((8640 <= s__state && !(s__hit == 0)) && blastFlag <= 3) || (8640 <= s__state && blastFlag == 2)) || (8640 <= s__state && blastFlag == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.2s, OverallIterations: 6, TraceHistogramMax: 4, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 180 SDtfs, 78 SDslu, 94 SDs, 0 SdLazy, 91 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=76occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 6 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 31 NumberOfFragments, 95 HoareAnnotationTreeSize, 8 FomulaSimplifications, 72 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 34 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 103 NumberOfCodeBlocks, 103 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 97 ConstructedInterpolants, 0 QuantifiedInterpolants, 4080 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 43/43 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...