/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/float-newlib/double_req_bl_1232a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 16:05:58,007 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 16:05:58,011 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 16:05:58,050 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 16:05:58,051 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 16:05:58,052 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 16:05:58,054 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 16:05:58,057 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 16:05:58,059 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 16:05:58,060 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 16:05:58,062 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 16:05:58,063 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 16:05:58,064 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 16:05:58,066 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 16:05:58,067 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 16:05:58,069 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 16:05:58,070 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 16:05:58,071 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 16:05:58,074 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 16:05:58,076 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 16:05:58,078 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 16:05:58,080 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 16:05:58,082 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 16:05:58,083 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 16:05:58,087 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 16:05:58,094 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 16:05:58,095 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 16:05:58,099 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 16:05:58,100 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 16:05:58,101 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 16:05:58,102 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 16:05:58,102 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 16:05:58,103 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 16:05:58,103 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 16:05:58,104 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 16:05:58,105 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 16:05:58,106 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 16:05:58,135 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 16:05:58,136 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 16:05:58,137 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 16:05:58,137 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 16:05:58,138 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 16:05:58,138 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 16:05:58,138 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 16:05:58,139 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 16:05:58,139 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 16:05:58,139 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 16:05:58,140 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 16:05:58,140 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 16:05:58,140 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 16:05:58,140 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 16:05:58,141 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 16:05:58,141 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 16:05:58,141 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 16:05:58,141 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 16:05:58,142 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 16:05:58,142 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 16:05:58,142 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 16:05:58,143 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 16:05:58,143 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 16:05:58,143 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 16:05:58,143 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 16:05:58,144 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 16:05:58,504 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 16:05:58,554 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 16:05:58,557 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 16:05:58,559 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 16:05:58,559 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 16:05:58,561 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1232a.c [2021-01-06 16:05:58,639 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/f94aaacdc/94a2617ad0d24a5491a14cdb9562f425/FLAGab88c4ecf [2021-01-06 16:05:59,276 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 16:05:59,277 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1232a.c [2021-01-06 16:05:59,285 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/f94aaacdc/94a2617ad0d24a5491a14cdb9562f425/FLAGab88c4ecf [2021-01-06 16:05:59,658 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/f94aaacdc/94a2617ad0d24a5491a14cdb9562f425 [2021-01-06 16:05:59,661 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 16:05:59,664 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 16:05:59,666 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 16:05:59,666 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 16:05:59,670 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 16:05:59,671 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 04:05:59" (1/1) ... [2021-01-06 16:05:59,672 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bfcbdac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:05:59, skipping insertion in model container [2021-01-06 16:05:59,673 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 04:05:59" (1/1) ... [2021-01-06 16:05:59,682 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 16:05:59,701 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: lhs: StructLHS[VariableLHS[~ew_u~0,],value] left hand side expression in assignment: lhs: VariableLHS[~msw~0,] left hand side expression in assignment: lhs: VariableLHS[~lsw~0,] left hand side expression in assignment: lhs: StructLHS[VariableLHS[~gh_u~0,],value] left hand side expression in assignment: lhs: VariableLHS[~msw~1,] [2021-01-06 16:05:59,893 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/float-newlib/double_req_bl_1232a.c[1957,1970] [2021-01-06 16:05:59,896 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 16:05:59,906 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#ew_u~0,],base],StructAccessExpression[IdentifierExpression[~#ew_u~0,],offset]]] left hand side expression in assignment: lhs: VariableLHS[~msw~0,] left hand side expression in assignment: lhs: VariableLHS[~lsw~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#gh_u~0,],base],StructAccessExpression[IdentifierExpression[~#gh_u~0,],offset]]] left hand side expression in assignment: lhs: VariableLHS[~msw~1,] [2021-01-06 16:05:59,935 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/float-newlib/double_req_bl_1232a.c[1957,1970] [2021-01-06 16:05:59,936 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 16:05:59,954 INFO L208 MainTranslator]: Completed translation [2021-01-06 16:05:59,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:05:59 WrapperNode [2021-01-06 16:05:59,955 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 16:05:59,956 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 16:05:59,956 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 16:05:59,956 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 16:05:59,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:05:59" (1/1) ... [2021-01-06 16:05:59,973 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:05:59" (1/1) ... [2021-01-06 16:06:00,000 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 16:06:00,001 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 16:06:00,001 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 16:06:00,001 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 16:06:00,011 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:05:59" (1/1) ... [2021-01-06 16:06:00,011 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:05:59" (1/1) ... [2021-01-06 16:06:00,014 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:05:59" (1/1) ... [2021-01-06 16:06:00,015 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:05:59" (1/1) ... [2021-01-06 16:06:00,029 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:05:59" (1/1) ... [2021-01-06 16:06:00,034 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:05:59" (1/1) ... [2021-01-06 16:06:00,036 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:05:59" (1/1) ... [2021-01-06 16:06:00,040 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 16:06:00,041 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 16:06:00,041 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 16:06:00,041 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 16:06:00,042 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:05:59" (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 16:06:00,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 16:06:00,151 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 16:06:00,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-01-06 16:06:00,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 16:06:00,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 16:06:00,152 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-01-06 16:06:00,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-06 16:06:00,711 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 16:06:00,711 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-01-06 16:06:00,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:06:00 BoogieIcfgContainer [2021-01-06 16:06:00,714 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 16:06:00,720 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 16:06:00,721 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 16:06:00,728 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 16:06:00,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 04:05:59" (1/3) ... [2021-01-06 16:06:00,729 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47b54f83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 04:06:00, skipping insertion in model container [2021-01-06 16:06:00,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:05:59" (2/3) ... [2021-01-06 16:06:00,730 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47b54f83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 04:06:00, skipping insertion in model container [2021-01-06 16:06:00,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:06:00" (3/3) ... [2021-01-06 16:06:00,735 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1232a.c [2021-01-06 16:06:00,747 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 16:06:00,753 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 16:06:00,777 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-01-06 16:06:00,821 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 16:06:00,822 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 16:06:00,822 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 16:06:00,822 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 16:06:00,822 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 16:06:00,822 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 16:06:00,823 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 16:06:00,823 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 16:06:00,845 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2021-01-06 16:06:00,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-06 16:06:00,859 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:06:00,860 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:06:00,861 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:06:00,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:06:00,869 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2021-01-06 16:06:00,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:06:00,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276371419] [2021-01-06 16:06:00,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:06:01,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:06:01,090 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 16:06:01,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276371419] [2021-01-06 16:06:01,093 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:06:01,093 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 16:06:01,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643031789] [2021-01-06 16:06:01,099 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 16:06:01,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:06:01,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 16:06:01,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 16:06:01,127 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2021-01-06 16:06:01,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:06:01,158 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions. [2021-01-06 16:06:01,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 16:06:01,160 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2021-01-06 16:06:01,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:06:01,195 INFO L225 Difference]: With dead ends: 62 [2021-01-06 16:06:01,195 INFO L226 Difference]: Without dead ends: 29 [2021-01-06 16:06:01,199 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 16:06:01,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-01-06 16:06:01,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-01-06 16:06:01,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2021-01-06 16:06:01,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2021-01-06 16:06:01,253 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2021-01-06 16:06:01,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:06:01,254 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2021-01-06 16:06:01,254 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 16:06:01,254 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2021-01-06 16:06:01,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-01-06 16:06:01,256 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:06:01,256 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:06:01,256 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 16:06:01,258 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:06:01,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:06:01,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2021-01-06 16:06:01,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:06:01,262 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242276121] [2021-01-06 16:06:01,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:06:01,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:06:01,454 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 16:06:01,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242276121] [2021-01-06 16:06:01,455 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:06:01,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 16:06:01,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138882713] [2021-01-06 16:06:01,458 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 16:06:01,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:06:01,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 16:06:01,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 16:06:01,460 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 4 states. [2021-01-06 16:06:01,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:06:01,598 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2021-01-06 16:06:01,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 16:06:01,599 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2021-01-06 16:06:01,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:06:01,603 INFO L225 Difference]: With dead ends: 53 [2021-01-06 16:06:01,603 INFO L226 Difference]: Without dead ends: 44 [2021-01-06 16:06:01,605 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-06 16:06:01,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-01-06 16:06:01,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 31. [2021-01-06 16:06:01,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-01-06 16:06:01,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2021-01-06 16:06:01,623 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2021-01-06 16:06:01,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:06:01,624 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2021-01-06 16:06:01,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 16:06:01,625 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2021-01-06 16:06:01,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-01-06 16:06:01,626 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:06:01,626 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:06:01,627 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 16:06:01,627 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:06:01,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:06:01,641 INFO L82 PathProgramCache]: Analyzing trace with hash 502201410, now seen corresponding path program 1 times [2021-01-06 16:06:01,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:06:01,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053202563] [2021-01-06 16:06:01,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:06:01,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:06:01,712 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 16:06:01,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053202563] [2021-01-06 16:06:01,713 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:06:01,713 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 16:06:01,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471689124] [2021-01-06 16:06:01,714 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 16:06:01,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:06:01,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 16:06:01,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 16:06:01,715 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2021-01-06 16:06:01,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:06:01,791 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2021-01-06 16:06:01,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 16:06:01,792 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2021-01-06 16:06:01,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:06:01,793 INFO L225 Difference]: With dead ends: 55 [2021-01-06 16:06:01,793 INFO L226 Difference]: Without dead ends: 46 [2021-01-06 16:06:01,794 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-06 16:06:01,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-01-06 16:06:01,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 31. [2021-01-06 16:06:01,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-01-06 16:06:01,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2021-01-06 16:06:01,800 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 12 [2021-01-06 16:06:01,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:06:01,801 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2021-01-06 16:06:01,801 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 16:06:01,801 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2021-01-06 16:06:01,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-06 16:06:01,802 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:06:01,802 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:06:01,802 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-06 16:06:01,803 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:06:01,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:06:01,803 INFO L82 PathProgramCache]: Analyzing trace with hash -1951233721, now seen corresponding path program 1 times [2021-01-06 16:06:01,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:06:01,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601556939] [2021-01-06 16:06:01,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:06:01,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:06:01,854 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 16:06:01,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601556939] [2021-01-06 16:06:01,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:06:01,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 16:06:01,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771273479] [2021-01-06 16:06:01,856 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 16:06:01,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:06:01,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 16:06:01,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 16:06:01,857 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2021-01-06 16:06:01,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:06:01,925 INFO L93 Difference]: Finished difference Result 57 states and 71 transitions. [2021-01-06 16:06:01,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 16:06:01,926 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2021-01-06 16:06:01,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:06:01,927 INFO L225 Difference]: With dead ends: 57 [2021-01-06 16:06:01,928 INFO L226 Difference]: Without dead ends: 48 [2021-01-06 16:06:01,928 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-06 16:06:01,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-01-06 16:06:01,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 31. [2021-01-06 16:06:01,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-01-06 16:06:01,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2021-01-06 16:06:01,934 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 13 [2021-01-06 16:06:01,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:06:01,934 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2021-01-06 16:06:01,934 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 16:06:01,934 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2021-01-06 16:06:01,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-06 16:06:01,935 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:06:01,935 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:06:01,935 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-06 16:06:01,935 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:06:01,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:06:01,936 INFO L82 PathProgramCache]: Analyzing trace with hash -555760345, now seen corresponding path program 1 times [2021-01-06 16:06:01,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:06:01,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180924219] [2021-01-06 16:06:01,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:06:01,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:06:02,012 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 16:06:02,013 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180924219] [2021-01-06 16:06:02,013 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:06:02,013 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 16:06:02,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411863040] [2021-01-06 16:06:02,014 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 16:06:02,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:06:02,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 16:06:02,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 16:06:02,018 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2021-01-06 16:06:02,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:06:02,085 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2021-01-06 16:06:02,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 16:06:02,086 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2021-01-06 16:06:02,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:06:02,086 INFO L225 Difference]: With dead ends: 55 [2021-01-06 16:06:02,087 INFO L226 Difference]: Without dead ends: 46 [2021-01-06 16:06:02,087 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-06 16:06:02,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-01-06 16:06:02,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 31. [2021-01-06 16:06:02,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-01-06 16:06:02,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2021-01-06 16:06:02,092 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 14 [2021-01-06 16:06:02,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:06:02,093 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2021-01-06 16:06:02,093 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 16:06:02,093 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2021-01-06 16:06:02,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-06 16:06:02,094 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:06:02,094 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:06:02,094 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-06 16:06:02,094 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:06:02,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:06:02,095 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2021-01-06 16:06:02,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:06:02,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016381961] [2021-01-06 16:06:02,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:06:02,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-06 16:06:02,120 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-06 16:06:02,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-06 16:06:02,139 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-06 16:06:02,165 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-01-06 16:06:02,166 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-01-06 16:06:02,166 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-06 16:06:02,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 04:06:02 BoogieIcfgContainer [2021-01-06 16:06:02,205 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 16:06:02,205 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 16:06:02,205 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 16:06:02,206 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 16:06:02,206 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:06:00" (3/4) ... [2021-01-06 16:06:02,210 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-01-06 16:06:02,210 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 16:06:02,213 INFO L168 Benchmark]: Toolchain (without parser) took 2548.15 ms. Allocated memory is still 151.0 MB. Free memory was 125.7 MB in the beginning and 93.7 MB in the end (delta: 32.1 MB). Peak memory consumption was 32.7 MB. Max. memory is 8.0 GB. [2021-01-06 16:06:02,213 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory is still 135.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 16:06:02,214 INFO L168 Benchmark]: CACSL2BoogieTranslator took 289.49 ms. Allocated memory is still 151.0 MB. Free memory was 125.6 MB in the beginning and 114.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-01-06 16:06:02,215 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.32 ms. Allocated memory is still 151.0 MB. Free memory was 114.8 MB in the beginning and 113.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 16:06:02,216 INFO L168 Benchmark]: Boogie Preprocessor took 39.07 ms. Allocated memory is still 151.0 MB. Free memory was 113.0 MB in the beginning and 111.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 16:06:02,217 INFO L168 Benchmark]: RCFGBuilder took 672.84 ms. Allocated memory is still 151.0 MB. Free memory was 111.5 MB in the beginning and 119.4 MB in the end (delta: -8.0 MB). Peak memory consumption was 9.3 MB. Max. memory is 8.0 GB. [2021-01-06 16:06:02,218 INFO L168 Benchmark]: TraceAbstraction took 1484.37 ms. Allocated memory is still 151.0 MB. Free memory was 119.1 MB in the beginning and 94.1 MB in the end (delta: 25.0 MB). Peak memory consumption was 27.5 MB. Max. memory is 8.0 GB. [2021-01-06 16:06:02,218 INFO L168 Benchmark]: Witness Printer took 4.98 ms. Allocated memory is still 151.0 MB. Free memory was 94.1 MB in the beginning and 93.7 MB in the end (delta: 491.1 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 16:06:02,223 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory is still 135.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 289.49 ms. Allocated memory is still 151.0 MB. Free memory was 125.6 MB in the beginning and 114.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 44.32 ms. Allocated memory is still 151.0 MB. Free memory was 114.8 MB in the beginning and 113.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 39.07 ms. Allocated memory is still 151.0 MB. Free memory was 113.0 MB in the beginning and 111.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 672.84 ms. Allocated memory is still 151.0 MB. Free memory was 111.5 MB in the beginning and 119.4 MB in the end (delta: -8.0 MB). Peak memory consumption was 9.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1484.37 ms. Allocated memory is still 151.0 MB. Free memory was 119.1 MB in the beginning and 94.1 MB in the end (delta: 25.0 MB). Peak memory consumption was 27.5 MB. Max. memory is 8.0 GB. * Witness Printer took 4.98 ms. Allocated memory is still 151.0 MB. Free memory was 94.1 MB in the beginning and 93.7 MB in the end (delta: 491.1 kB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 82]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 81, overapproximation of someUnaryDOUBLEoperation at line 77. Possible FailurePath: [L76] double x = 0.0; [L77] double y = -0.0; [L21] __uint32_t msw, lsw; [L24] ieee_double_shape_type ew_u; [L25] ew_u.value = (x) [L26] EXPR ew_u.parts.msw [L26] (msw) = ew_u.parts.msw [L27] EXPR ew_u.parts.lsw [L27] (lsw) = ew_u.parts.lsw [L30-L31] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L33-L34] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L36-L37] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L40-L41] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L44] return 0; [L48] COND TRUE __fpclassify_double(x) == 0 [L49] return y; [L78] double res = fmin_double(x, y); [L81] EXPR res == -0.0 && __signbit_double(res) == 1 [L81] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L82] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.3s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 251 SDtfs, 64 SDslu, 298 SDs, 0 SdLazy, 84 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, 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, 5 MinimizatonAttempts, 60 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 74 NumberOfCodeBlocks, 74 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 55 ConstructedInterpolants, 0 QuantifiedInterpolants, 799 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...