/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-dcfa08f [2020-12-23 01:41:50,691 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 01:41:50,694 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 01:41:50,729 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 01:41:50,729 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 01:41:50,731 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 01:41:50,732 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 01:41:50,744 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 01:41:50,746 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 01:41:50,747 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 01:41:50,748 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 01:41:50,750 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 01:41:50,750 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 01:41:50,751 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 01:41:50,753 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 01:41:50,754 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 01:41:50,755 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 01:41:50,756 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 01:41:50,758 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 01:41:50,760 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 01:41:50,762 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 01:41:50,766 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 01:41:50,768 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 01:41:50,769 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 01:41:50,772 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 01:41:50,776 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 01:41:50,777 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 01:41:50,778 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 01:41:50,779 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 01:41:50,780 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 01:41:50,780 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 01:41:50,781 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 01:41:50,782 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 01:41:50,782 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 01:41:50,783 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 01:41:50,784 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 01:41:50,785 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 01:41:50,813 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 01:41:50,813 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 01:41:50,815 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 01:41:50,815 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 01:41:50,815 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 01:41:50,816 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 01:41:50,816 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 01:41:50,816 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 01:41:50,817 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 01:41:50,817 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 01:41:50,817 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 01:41:50,818 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 01:41:50,818 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 01:41:50,818 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 01:41:50,819 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 01:41:50,819 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 01:41:50,819 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 01:41:50,820 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 01:41:50,820 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 01:41:50,820 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 01:41:50,821 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 01:41:50,821 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 01:41:50,821 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 01:41:50,821 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 01:41:50,822 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 01:41:50,822 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 01:41:51,250 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 01:41:51,291 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 01:41:51,295 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 01:41:51,296 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 01:41:51,297 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 01:41:51,298 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/openssl-simplified/s3_srvr_1b.cil.c [2020-12-23 01:41:51,379 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/042347bec/fe968f745c3b474e818b085c5eaf6eb7/FLAG9fc9baca4 [2020-12-23 01:41:51,971 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 01:41:51,972 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/openssl-simplified/s3_srvr_1b.cil.c [2020-12-23 01:41:51,981 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/042347bec/fe968f745c3b474e818b085c5eaf6eb7/FLAG9fc9baca4 [2020-12-23 01:41:52,300 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/042347bec/fe968f745c3b474e818b085c5eaf6eb7 [2020-12-23 01:41:52,303 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 01:41:52,305 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 01:41:52,306 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 01:41:52,307 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 01:41:52,317 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 01:41:52,318 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:41:52" (1/1) ... [2020-12-23 01:41:52,319 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31b4ee9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:41:52, skipping insertion in model container [2020-12-23 01:41:52,320 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:41:52" (1/1) ... [2020-12-23 01:41:52,329 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 01:41:52,358 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,] [2020-12-23 01:41:52,515 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] [2020-12-23 01:41:52,519 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 01:41:52,532 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,] [2020-12-23 01:41:52,552 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] [2020-12-23 01:41:52,553 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 01:41:52,568 INFO L208 MainTranslator]: Completed translation [2020-12-23 01:41:52,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:41:52 WrapperNode [2020-12-23 01:41:52,569 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 01:41:52,570 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 01:41:52,570 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 01:41:52,570 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 01:41:52,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:41:52" (1/1) ... [2020-12-23 01:41:52,587 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:41:52" (1/1) ... [2020-12-23 01:41:52,609 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 01:41:52,610 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 01:41:52,610 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 01:41:52,610 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 01:41:52,619 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:41:52" (1/1) ... [2020-12-23 01:41:52,620 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:41:52" (1/1) ... [2020-12-23 01:41:52,621 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:41:52" (1/1) ... [2020-12-23 01:41:52,622 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:41:52" (1/1) ... [2020-12-23 01:41:52,626 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:41:52" (1/1) ... [2020-12-23 01:41:52,631 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:41:52" (1/1) ... [2020-12-23 01:41:52,632 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:41:52" (1/1) ... [2020-12-23 01:41:52,635 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 01:41:52,636 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 01:41:52,636 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 01:41:52,636 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 01:41:52,637 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:41:52" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 01:41:52,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 01:41:52,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 01:41:52,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 01:41:52,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 01:41:53,087 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 01:41:53,087 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2020-12-23 01:41:53,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:41:53 BoogieIcfgContainer [2020-12-23 01:41:53,090 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 01:41:53,092 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 01:41:53,093 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 01:41:53,097 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 01:41:53,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 01:41:52" (1/3) ... [2020-12-23 01:41:53,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@332d2297 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:41:53, skipping insertion in model container [2020-12-23 01:41:53,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:41:52" (2/3) ... [2020-12-23 01:41:53,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@332d2297 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:41:53, skipping insertion in model container [2020-12-23 01:41:53,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:41:53" (3/3) ... [2020-12-23 01:41:53,102 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_1b.cil.c [2020-12-23 01:41:53,111 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 01:41:53,116 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 01:41:53,137 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 01:41:53,165 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 01:41:53,166 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 01:41:53,170 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 01:41:53,197 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 01:41:53,197 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 01:41:53,198 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 01:41:53,198 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 01:41:53,198 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 01:41:53,244 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-12-23 01:41:53,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-23 01:41:53,263 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:41:53,264 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-23 01:41:53,264 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:41:53,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:41:53,271 INFO L82 PathProgramCache]: Analyzing trace with hash 28699838, now seen corresponding path program 1 times [2020-12-23 01:41:53,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:41:53,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850960509] [2020-12-23 01:41:53,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:41:53,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:41:53,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:41:53,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850960509] [2020-12-23 01:41:53,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:41:53,539 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 01:41:53,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625213310] [2020-12-23 01:41:53,545 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 01:41:53,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:41:53,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 01:41:53,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:41:53,571 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 3 states. [2020-12-23 01:41:53,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:41:53,720 INFO L93 Difference]: Finished difference Result 65 states and 109 transitions. [2020-12-23 01:41:53,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 01:41:53,723 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-12-23 01:41:53,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:41:53,749 INFO L225 Difference]: With dead ends: 65 [2020-12-23 01:41:53,749 INFO L226 Difference]: Without dead ends: 35 [2020-12-23 01:41:53,755 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:41:53,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-12-23 01:41:53,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-12-23 01:41:53,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-23 01:41:53,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 49 transitions. [2020-12-23 01:41:53,808 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 49 transitions. Word has length 5 [2020-12-23 01:41:53,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:41:53,808 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 49 transitions. [2020-12-23 01:41:53,809 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 01:41:53,809 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 49 transitions. [2020-12-23 01:41:53,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-23 01:41:53,811 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:41:53,812 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:41:53,813 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 01:41:53,813 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:41:53,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:41:53,817 INFO L82 PathProgramCache]: Analyzing trace with hash -1523322994, now seen corresponding path program 1 times [2020-12-23 01:41:53,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:41:53,819 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880884818] [2020-12-23 01:41:53,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:41:53,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:41:53,904 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:41:53,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880884818] [2020-12-23 01:41:53,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:41:53,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 01:41:53,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524909173] [2020-12-23 01:41:53,906 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 01:41:53,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:41:53,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 01:41:53,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:41:53,908 INFO L87 Difference]: Start difference. First operand 35 states and 49 transitions. Second operand 3 states. [2020-12-23 01:41:53,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:41:53,947 INFO L93 Difference]: Finished difference Result 66 states and 99 transitions. [2020-12-23 01:41:53,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 01:41:53,948 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-12-23 01:41:53,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:41:53,949 INFO L225 Difference]: With dead ends: 66 [2020-12-23 01:41:53,949 INFO L226 Difference]: Without dead ends: 48 [2020-12-23 01:41:53,950 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:41:53,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-12-23 01:41:53,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-12-23 01:41:53,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-12-23 01:41:53,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 67 transitions. [2020-12-23 01:41:53,960 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 67 transitions. Word has length 10 [2020-12-23 01:41:53,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:41:53,960 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 67 transitions. [2020-12-23 01:41:53,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 01:41:53,960 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 67 transitions. [2020-12-23 01:41:53,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-23 01:41:53,961 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:41:53,962 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:41:53,962 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 01:41:53,962 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:41:53,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:41:53,963 INFO L82 PathProgramCache]: Analyzing trace with hash 864936600, now seen corresponding path program 1 times [2020-12-23 01:41:53,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:41:53,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068426076] [2020-12-23 01:41:53,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:41:53,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:41:53,999 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:41:54,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068426076] [2020-12-23 01:41:54,000 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:41:54,000 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 01:41:54,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47802761] [2020-12-23 01:41:54,001 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 01:41:54,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:41:54,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 01:41:54,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:41:54,002 INFO L87 Difference]: Start difference. First operand 48 states and 67 transitions. Second operand 3 states. [2020-12-23 01:41:54,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:41:54,038 INFO L93 Difference]: Finished difference Result 89 states and 127 transitions. [2020-12-23 01:41:54,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 01:41:54,038 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-12-23 01:41:54,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:41:54,040 INFO L225 Difference]: With dead ends: 89 [2020-12-23 01:41:54,040 INFO L226 Difference]: Without dead ends: 58 [2020-12-23 01:41:54,040 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:41:54,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-12-23 01:41:54,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2020-12-23 01:41:54,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-12-23 01:41:54,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 76 transitions. [2020-12-23 01:41:54,050 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 76 transitions. Word has length 17 [2020-12-23 01:41:54,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:41:54,051 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 76 transitions. [2020-12-23 01:41:54,051 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 01:41:54,051 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 76 transitions. [2020-12-23 01:41:54,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-23 01:41:54,052 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:41:54,052 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:41:54,052 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 01:41:54,053 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:41:54,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:41:54,053 INFO L82 PathProgramCache]: Analyzing trace with hash 163872022, now seen corresponding path program 1 times [2020-12-23 01:41:54,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:41:54,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796732773] [2020-12-23 01:41:54,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:41:54,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:41:54,115 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 01:41:54,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796732773] [2020-12-23 01:41:54,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:41:54,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 01:41:54,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591831452] [2020-12-23 01:41:54,121 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 01:41:54,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:41:54,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 01:41:54,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:41:54,122 INFO L87 Difference]: Start difference. First operand 56 states and 76 transitions. Second operand 3 states. [2020-12-23 01:41:54,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:41:54,203 INFO L93 Difference]: Finished difference Result 117 states and 164 transitions. [2020-12-23 01:41:54,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 01:41:54,206 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-12-23 01:41:54,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:41:54,208 INFO L225 Difference]: With dead ends: 117 [2020-12-23 01:41:54,208 INFO L226 Difference]: Without dead ends: 78 [2020-12-23 01:41:54,209 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:41:54,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-12-23 01:41:54,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2020-12-23 01:41:54,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-12-23 01:41:54,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 106 transitions. [2020-12-23 01:41:54,235 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 106 transitions. Word has length 17 [2020-12-23 01:41:54,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:41:54,236 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 106 transitions. [2020-12-23 01:41:54,236 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 01:41:54,238 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 106 transitions. [2020-12-23 01:41:54,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-23 01:41:54,239 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:41:54,240 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:41:54,240 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 01:41:54,243 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:41:54,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:41:54,244 INFO L82 PathProgramCache]: Analyzing trace with hash -1464847913, now seen corresponding path program 1 times [2020-12-23 01:41:54,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:41:54,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240897168] [2020-12-23 01:41:54,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:41:54,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:41:54,283 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 01:41:54,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240897168] [2020-12-23 01:41:54,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:41:54,284 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 01:41:54,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911711192] [2020-12-23 01:41:54,285 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 01:41:54,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:41:54,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 01:41:54,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:41:54,286 INFO L87 Difference]: Start difference. First operand 76 states and 106 transitions. Second operand 3 states. [2020-12-23 01:41:54,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:41:54,327 INFO L93 Difference]: Finished difference Result 146 states and 204 transitions. [2020-12-23 01:41:54,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 01:41:54,327 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-12-23 01:41:54,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:41:54,329 INFO L225 Difference]: With dead ends: 146 [2020-12-23 01:41:54,329 INFO L226 Difference]: Without dead ends: 58 [2020-12-23 01:41:54,330 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:41:54,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-12-23 01:41:54,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2020-12-23 01:41:54,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-12-23 01:41:54,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 69 transitions. [2020-12-23 01:41:54,339 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 69 transitions. Word has length 20 [2020-12-23 01:41:54,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:41:54,340 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 69 transitions. [2020-12-23 01:41:54,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 01:41:54,340 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 69 transitions. [2020-12-23 01:41:54,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-23 01:41:54,345 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:41:54,345 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] [2020-12-23 01:41:54,345 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 01:41:54,345 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:41:54,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:41:54,346 INFO L82 PathProgramCache]: Analyzing trace with hash -12347436, now seen corresponding path program 1 times [2020-12-23 01:41:54,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:41:54,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585036428] [2020-12-23 01:41:54,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:41:54,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:41:54,445 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-23 01:41:54,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585036428] [2020-12-23 01:41:54,445 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:41:54,446 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 01:41:54,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476209641] [2020-12-23 01:41:54,446 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 01:41:54,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:41:54,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 01:41:54,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:41:54,452 INFO L87 Difference]: Start difference. First operand 56 states and 69 transitions. Second operand 3 states. [2020-12-23 01:41:54,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:41:54,481 INFO L93 Difference]: Finished difference Result 90 states and 108 transitions. [2020-12-23 01:41:54,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 01:41:54,482 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2020-12-23 01:41:54,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:41:54,482 INFO L225 Difference]: With dead ends: 90 [2020-12-23 01:41:54,483 INFO L226 Difference]: Without dead ends: 0 [2020-12-23 01:41:54,488 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:41:54,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-23 01:41:54,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-23 01:41:54,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-23 01:41:54,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-23 01:41:54,489 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 34 [2020-12-23 01:41:54,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:41:54,489 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-23 01:41:54,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 01:41:54,490 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-23 01:41:54,490 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-23 01:41:54,490 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 01:41:54,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-23 01:41:54,708 INFO L189 CegarLoopUtils]: For program point L97(lines 97 99) no Hoare annotation was computed. [2020-12-23 01:41:54,708 INFO L189 CegarLoopUtils]: For program point L31(lines 31 126) no Hoare annotation was computed. [2020-12-23 01:41:54,708 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)) [2020-12-23 01:41:54,709 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)))) [2020-12-23 01:41:54,709 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)))) [2020-12-23 01:41:54,709 INFO L185 CegarLoopUtils]: At program point L98(lines 10 142) the Hoare annotation is: false [2020-12-23 01:41:54,709 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)))) [2020-12-23 01:41:54,710 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-23 01:41:54,714 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-23 01:41:54,714 INFO L189 CegarLoopUtils]: For program point L94-1(lines 55 108) no Hoare annotation was computed. [2020-12-23 01:41:54,714 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-23 01:41:54,715 INFO L189 CegarLoopUtils]: For program point L90-1(lines 55 108) no Hoare annotation was computed. [2020-12-23 01:41:54,715 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 140) no Hoare annotation was computed. [2020-12-23 01:41:54,715 INFO L189 CegarLoopUtils]: For program point L20(line 20) no Hoare annotation was computed. [2020-12-23 01:41:54,715 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-23 01:41:54,715 INFO L189 CegarLoopUtils]: For program point L79-1(lines 55 108) no Hoare annotation was computed. [2020-12-23 01:41:54,716 INFO L192 CegarLoopUtils]: At program point L141(lines 10 142) the Hoare annotation is: true [2020-12-23 01:41:54,716 INFO L189 CegarLoopUtils]: For program point L71(lines 71 75) no Hoare annotation was computed. [2020-12-23 01:41:54,716 INFO L189 CegarLoopUtils]: For program point L26(lines 26 129) no Hoare annotation was computed. [2020-12-23 01:41:54,716 INFO L189 CegarLoopUtils]: For program point L59-1(lines 55 108) no Hoare annotation was computed. [2020-12-23 01:41:54,716 INFO L189 CegarLoopUtils]: For program point L51(lines 51 110) no Hoare annotation was computed. [2020-12-23 01:41:54,716 INFO L189 CegarLoopUtils]: For program point L47(lines 47 112) no Hoare annotation was computed. [2020-12-23 01:41:54,717 INFO L192 CegarLoopUtils]: At program point L138(lines 10 142) the Hoare annotation is: true [2020-12-23 01:41:54,717 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)) [2020-12-23 01:41:54,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 01:41:54 BoogieIcfgContainer [2020-12-23 01:41:54,770 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 01:41:54,771 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 01:41:54,772 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 01:41:54,775 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 01:41:54,776 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:41:53" (3/4) ... [2020-12-23 01:41:54,787 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-23 01:41:54,814 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-12-23 01:41:54,815 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-23 01:41:54,815 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 01:41:54,816 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 01:41:54,888 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/openssl-simplified/s3_srvr_1b.cil.c-witness.graphml [2020-12-23 01:41:54,889 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 01:41:54,891 INFO L168 Benchmark]: Toolchain (without parser) took 2585.48 ms. Allocated memory is still 170.9 MB. Free memory was 146.4 MB in the beginning and 63.5 MB in the end (delta: 82.9 MB). Peak memory consumption was 82.8 MB. Max. memory is 8.0 GB. [2020-12-23 01:41:54,892 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 170.9 MB. Free memory is still 142.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 01:41:54,893 INFO L168 Benchmark]: CACSL2BoogieTranslator took 262.51 ms. Allocated memory is still 170.9 MB. Free memory was 146.3 MB in the beginning and 136.3 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-23 01:41:54,894 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.04 ms. Allocated memory is still 170.9 MB. Free memory was 136.1 MB in the beginning and 134.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 01:41:54,895 INFO L168 Benchmark]: Boogie Preprocessor took 25.24 ms. Allocated memory is still 170.9 MB. Free memory was 134.8 MB in the beginning and 133.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 01:41:54,896 INFO L168 Benchmark]: RCFGBuilder took 454.66 ms. Allocated memory is still 170.9 MB. Free memory was 133.7 MB in the beginning and 119.5 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-12-23 01:41:54,897 INFO L168 Benchmark]: TraceAbstraction took 1678.10 ms. Allocated memory is still 170.9 MB. Free memory was 119.1 MB in the beginning and 67.2 MB in the end (delta: 51.9 MB). Peak memory consumption was 52.3 MB. Max. memory is 8.0 GB. [2020-12-23 01:41:54,898 INFO L168 Benchmark]: Witness Printer took 117.38 ms. Allocated memory is still 170.9 MB. Free memory was 67.2 MB in the beginning and 63.5 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-23 01:41:54,903 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 170.9 MB. Free memory is still 142.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 262.51 ms. Allocated memory is still 170.9 MB. Free memory was 146.3 MB in the beginning and 136.3 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 39.04 ms. Allocated memory is still 170.9 MB. Free memory was 136.1 MB in the beginning and 134.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 25.24 ms. Allocated memory is still 170.9 MB. Free memory was 134.8 MB in the beginning and 133.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 454.66 ms. Allocated memory is still 170.9 MB. Free memory was 133.7 MB in the beginning and 119.5 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1678.10 ms. Allocated memory is still 170.9 MB. Free memory was 119.1 MB in the beginning and 67.2 MB in the end (delta: 51.9 MB). Peak memory consumption was 52.3 MB. Max. memory is 8.0 GB. * Witness Printer took 117.38 ms. Allocated memory is still 170.9 MB. Free memory was 67.2 MB in the beginning and 63.5 MB in the end (delta: 3.6 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: 1.3s, OverallIterations: 6, TraceHistogramMax: 4, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 180 SDtfs, 78 SDslu, 94 SDs, 0 SdLazy, 91 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s 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: 0.0s 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, 0.1s 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...