/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_1231b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 16:05:57,514 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 16:05:57,517 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 16:05:57,553 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 16:05:57,553 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 16:05:57,555 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 16:05:57,557 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 16:05:57,559 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 16:05:57,562 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 16:05:57,563 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 16:05:57,565 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 16:05:57,566 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 16:05:57,567 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 16:05:57,568 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 16:05:57,569 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 16:05:57,571 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 16:05:57,585 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 16:05:57,592 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 16:05:57,595 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 16:05:57,599 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 16:05:57,602 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 16:05:57,608 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 16:05:57,610 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 16:05:57,611 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 16:05:57,614 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 16:05:57,628 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 16:05:57,629 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 16:05:57,630 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 16:05:57,631 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 16:05:57,633 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 16:05:57,634 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 16:05:57,635 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 16:05:57,635 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 16:05:57,635 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 16:05:57,637 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 16:05:57,644 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 16:05:57,646 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 16:05:57,698 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 16:05:57,698 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 16:05:57,703 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 16:05:57,704 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 16:05:57,704 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 16:05:57,704 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 16:05:57,704 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 16:05:57,705 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 16:05:57,705 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 16:05:57,705 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 16:05:57,706 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 16:05:57,706 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 16:05:57,707 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 16:05:57,707 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 16:05:57,707 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 16:05:57,707 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 16:05:57,708 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 16:05:57,708 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 16:05:57,708 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 16:05:57,708 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 16:05:57,708 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 16:05:57,709 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 16:05:57,709 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 16:05:57,709 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 16:05:57,709 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 16:05:57,709 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 16:05:58,106 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 16:05:58,131 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 16:05:58,134 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 16:05:58,135 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 16:05:58,136 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 16:05:58,137 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1231b.c [2021-01-06 16:05:58,220 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/66e125cab/f4f388ea3d3848e49273d7c4644137a4/FLAG273feef84 [2021-01-06 16:05:58,785 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 16:05:58,785 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1231b.c [2021-01-06 16:05:58,794 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/66e125cab/f4f388ea3d3848e49273d7c4644137a4/FLAG273feef84 [2021-01-06 16:05:59,156 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/66e125cab/f4f388ea3d3848e49273d7c4644137a4 [2021-01-06 16:05:59,161 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 16:05:59,165 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 16:05:59,169 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 16:05:59,169 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 16:05:59,178 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 16:05:59,178 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 04:05:59" (1/1) ... [2021-01-06 16:05:59,180 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c3306af 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 16:05:59,180 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 04:05:59" (1/1) ... [2021-01-06 16:05:59,189 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 16:05:59,219 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,] [2021-01-06 16:05:59,404 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_1231b.c[1765,1778] [2021-01-06 16:05:59,408 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 16:05:59,418 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,] [2021-01-06 16:05:59,444 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_1231b.c[1765,1778] [2021-01-06 16:05:59,445 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 16:05:59,470 INFO L208 MainTranslator]: Completed translation [2021-01-06 16:05:59,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:05:59 WrapperNode [2021-01-06 16:05:59,470 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 16:05:59,473 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 16:05:59,473 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 16:05:59,473 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 16:05:59,494 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 16:05:59,502 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 16:05:59,528 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 16:05:59,529 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 16:05:59,529 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 16:05:59,529 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 16:05:59,539 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 16:05:59,540 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 16:05:59,543 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 16:05:59,543 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 16:05:59,551 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 16:05:59,557 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 16:05:59,559 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 16:05:59,562 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 16:05:59,563 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 16:05:59,563 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 16:05:59,563 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 16:05:59,565 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 16:05:59,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 16:05:59,673 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 16:05:59,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-01-06 16:05:59,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 16:05:59,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 16:05:59,675 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-01-06 16:05:59,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-06 16:06:00,121 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 16:06:00,121 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-01-06 16:06:00,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:06:00 BoogieIcfgContainer [2021-01-06 16:06:00,124 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 16:06:00,126 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 16:06:00,126 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 16:06:00,130 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 16:06:00,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 04:05:59" (1/3) ... [2021-01-06 16:06:00,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a6eddcc 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 16:06:00,132 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 16:06:00,133 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a6eddcc 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 16:06:00,133 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 16:06:00,135 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1231b.c [2021-01-06 16:06:00,144 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 16:06:00,149 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 16:06:00,173 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-01-06 16:06:00,205 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 16:06:00,205 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 16:06:00,205 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 16:06:00,205 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 16:06:00,205 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 16:06:00,206 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 16:06:00,206 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 16:06:00,206 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 16:06:00,223 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2021-01-06 16:06:00,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-01-06 16:06:00,229 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:06:00,229 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:06:00,230 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:06:00,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:06:00,246 INFO L82 PathProgramCache]: Analyzing trace with hash -124750094, now seen corresponding path program 1 times [2021-01-06 16:06:00,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:06:00,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852305467] [2021-01-06 16:06:00,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:06:00,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:06:00,558 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 16:06:00,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852305467] [2021-01-06 16:06:00,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:06:00,561 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 16:06:00,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081029997] [2021-01-06 16:06:00,577 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 16:06:00,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:06:00,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 16:06:00,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 16:06:00,606 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 2 states. [2021-01-06 16:06:00,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:06:00,637 INFO L93 Difference]: Finished difference Result 56 states and 87 transitions. [2021-01-06 16:06:00,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 16:06:00,639 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2021-01-06 16:06:00,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:06:00,664 INFO L225 Difference]: With dead ends: 56 [2021-01-06 16:06:00,665 INFO L226 Difference]: Without dead ends: 26 [2021-01-06 16:06:00,670 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 16:06:00,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-01-06 16:06:00,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-01-06 16:06:00,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-01-06 16:06:00,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 36 transitions. [2021-01-06 16:06:00,721 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 36 transitions. Word has length 11 [2021-01-06 16:06:00,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:06:00,722 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 36 transitions. [2021-01-06 16:06:00,722 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 16:06:00,722 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 36 transitions. [2021-01-06 16:06:00,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-01-06 16:06:00,724 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:06:00,724 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:06:00,725 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 16:06:00,726 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:06:00,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:06:00,732 INFO L82 PathProgramCache]: Analyzing trace with hash -1352831344, now seen corresponding path program 1 times [2021-01-06 16:06:00,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:06:00,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586953552] [2021-01-06 16:06:00,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:06:00,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:06:00,869 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 16:06:00,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586953552] [2021-01-06 16:06:00,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:06:00,871 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 16:06:00,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563542099] [2021-01-06 16:06:00,872 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 16:06:00,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:06:00,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 16:06:00,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 16:06:00,874 INFO L87 Difference]: Start difference. First operand 26 states and 36 transitions. Second operand 4 states. [2021-01-06 16:06:00,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:06:00,935 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2021-01-06 16:06:00,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 16:06:00,936 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2021-01-06 16:06:00,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:06:00,937 INFO L225 Difference]: With dead ends: 40 [2021-01-06 16:06:00,937 INFO L226 Difference]: Without dead ends: 36 [2021-01-06 16:06:00,938 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 16:06:00,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-01-06 16:06:00,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 28. [2021-01-06 16:06:00,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-01-06 16:06:00,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2021-01-06 16:06:00,946 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 12 [2021-01-06 16:06:00,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:06:00,947 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2021-01-06 16:06:00,947 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 16:06:00,947 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2021-01-06 16:06:00,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-06 16:06:00,948 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:06:00,948 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:06:00,948 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 16:06:00,948 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:06:00,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:06:00,949 INFO L82 PathProgramCache]: Analyzing trace with hash -1913129681, now seen corresponding path program 1 times [2021-01-06 16:06:00,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:06:00,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947694857] [2021-01-06 16:06:00,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:06:00,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:06:01,021 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 16:06:01,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947694857] [2021-01-06 16:06:01,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:06:01,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 16:06:01,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631230816] [2021-01-06 16:06:01,025 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 16:06:01,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:06:01,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 16:06:01,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 16:06:01,032 INFO L87 Difference]: Start difference. First operand 28 states and 38 transitions. Second operand 4 states. [2021-01-06 16:06:01,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:06:01,119 INFO L93 Difference]: Finished difference Result 42 states and 53 transitions. [2021-01-06 16:06:01,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 16:06:01,122 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2021-01-06 16:06:01,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:06:01,123 INFO L225 Difference]: With dead ends: 42 [2021-01-06 16:06:01,123 INFO L226 Difference]: Without dead ends: 38 [2021-01-06 16:06:01,123 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 16:06:01,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-01-06 16:06:01,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 28. [2021-01-06 16:06:01,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-01-06 16:06:01,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2021-01-06 16:06:01,138 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 13 [2021-01-06 16:06:01,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:06:01,138 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2021-01-06 16:06:01,139 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 16:06:01,139 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2021-01-06 16:06:01,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-06 16:06:01,140 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:06:01,140 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:06:01,140 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-06 16:06:01,141 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:06:01,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:06:01,142 INFO L82 PathProgramCache]: Analyzing trace with hash -1959363189, now seen corresponding path program 1 times [2021-01-06 16:06:01,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:06:01,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415697512] [2021-01-06 16:06:01,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:06:01,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:06:01,228 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 16:06:01,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415697512] [2021-01-06 16:06:01,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:06:01,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 16:06:01,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011478991] [2021-01-06 16:06:01,230 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 16:06:01,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:06:01,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 16:06:01,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 16:06:01,231 INFO L87 Difference]: Start difference. First operand 28 states and 38 transitions. Second operand 4 states. [2021-01-06 16:06:01,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:06:01,280 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2021-01-06 16:06:01,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 16:06:01,281 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2021-01-06 16:06:01,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:06:01,282 INFO L225 Difference]: With dead ends: 44 [2021-01-06 16:06:01,282 INFO L226 Difference]: Without dead ends: 40 [2021-01-06 16:06:01,283 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 16:06:01,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-01-06 16:06:01,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 28. [2021-01-06 16:06:01,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-01-06 16:06:01,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2021-01-06 16:06:01,289 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 14 [2021-01-06 16:06:01,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:06:01,290 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2021-01-06 16:06:01,290 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 16:06:01,290 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2021-01-06 16:06:01,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-01-06 16:06:01,291 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:06:01,291 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:06:01,292 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-06 16:06:01,292 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:06:01,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:06:01,293 INFO L82 PathProgramCache]: Analyzing trace with hash 1045511114, now seen corresponding path program 1 times [2021-01-06 16:06:01,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:06:01,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302460576] [2021-01-06 16:06:01,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:06:01,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:06:01,342 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 16:06:01,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302460576] [2021-01-06 16:06:01,343 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:06:01,343 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 16:06:01,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240722445] [2021-01-06 16:06:01,344 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 16:06:01,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:06:01,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 16:06:01,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 16:06:01,346 INFO L87 Difference]: Start difference. First operand 28 states and 38 transitions. Second operand 4 states. [2021-01-06 16:06:01,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:06:01,394 INFO L93 Difference]: Finished difference Result 42 states and 53 transitions. [2021-01-06 16:06:01,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 16:06:01,395 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2021-01-06 16:06:01,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:06:01,396 INFO L225 Difference]: With dead ends: 42 [2021-01-06 16:06:01,397 INFO L226 Difference]: Without dead ends: 38 [2021-01-06 16:06:01,398 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 16:06:01,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-01-06 16:06:01,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 28. [2021-01-06 16:06:01,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-01-06 16:06:01,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2021-01-06 16:06:01,404 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 15 [2021-01-06 16:06:01,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:06:01,404 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2021-01-06 16:06:01,405 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 16:06:01,405 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2021-01-06 16:06:01,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-01-06 16:06:01,406 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:06:01,406 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:06:01,406 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-06 16:06:01,406 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:06:01,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:06:01,407 INFO L82 PathProgramCache]: Analyzing trace with hash 1102769416, now seen corresponding path program 1 times [2021-01-06 16:06:01,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:06:01,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98860773] [2021-01-06 16:06:01,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:06:01,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-06 16:06:01,439 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-06 16:06:01,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-06 16:06:01,463 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-06 16:06:01,491 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-01-06 16:06:01,492 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-01-06 16:06:01,492 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-06 16:06:01,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 04:06:01 BoogieIcfgContainer [2021-01-06 16:06:01,545 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 16:06:01,546 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 16:06:01,546 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 16:06:01,546 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 16:06:01,550 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 16:06:01,554 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-01-06 16:06:01,554 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 16:06:01,557 INFO L168 Benchmark]: Toolchain (without parser) took 2391.60 ms. Allocated memory is still 156.2 MB. Free memory was 132.0 MB in the beginning and 64.8 MB in the end (delta: 67.2 MB). Peak memory consumption was 67.1 MB. Max. memory is 8.0 GB. [2021-01-06 16:06:01,558 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 156.2 MB. Free memory is still 128.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 16:06:01,558 INFO L168 Benchmark]: CACSL2BoogieTranslator took 301.73 ms. Allocated memory is still 156.2 MB. Free memory was 131.8 MB in the beginning and 121.4 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-01-06 16:06:01,559 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.49 ms. Allocated memory is still 156.2 MB. Free memory was 121.2 MB in the beginning and 119.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 16:06:01,560 INFO L168 Benchmark]: Boogie Preprocessor took 33.18 ms. Allocated memory is still 156.2 MB. Free memory was 119.5 MB in the beginning and 118.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 16:06:01,561 INFO L168 Benchmark]: RCFGBuilder took 561.07 ms. Allocated memory is still 156.2 MB. Free memory was 118.1 MB in the beginning and 131.9 MB in the end (delta: -13.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-01-06 16:06:01,562 INFO L168 Benchmark]: TraceAbstraction took 1419.62 ms. Allocated memory is still 156.2 MB. Free memory was 131.4 MB in the beginning and 65.3 MB in the end (delta: 66.1 MB). Peak memory consumption was 66.1 MB. Max. memory is 8.0 GB. [2021-01-06 16:06:01,563 INFO L168 Benchmark]: Witness Printer took 8.12 ms. Allocated memory is still 156.2 MB. Free memory was 65.3 MB in the beginning and 64.8 MB in the end (delta: 526.3 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 16:06:01,567 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 156.2 MB. Free memory is still 128.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 301.73 ms. Allocated memory is still 156.2 MB. Free memory was 131.8 MB in the beginning and 121.4 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 55.49 ms. Allocated memory is still 156.2 MB. Free memory was 121.2 MB in the beginning and 119.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 33.18 ms. Allocated memory is still 156.2 MB. Free memory was 119.5 MB in the beginning and 118.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 561.07 ms. Allocated memory is still 156.2 MB. Free memory was 118.1 MB in the beginning and 131.9 MB in the end (delta: -13.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1419.62 ms. Allocated memory is still 156.2 MB. Free memory was 131.4 MB in the beginning and 65.3 MB in the end (delta: 66.1 MB). Peak memory consumption was 66.1 MB. Max. memory is 8.0 GB. * Witness Printer took 8.12 ms. Allocated memory is still 156.2 MB. Free memory was 65.3 MB in the beginning and 64.8 MB in the end (delta: 526.3 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 70]: 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 69, overapproximation of someBinaryArithmeticDOUBLEoperation at line 63. Possible FailurePath: [L62] double x = __VERIFIER_nondet_double(); [L63] double y = 0.0 / 0.0; [L18] return x != x; [L64] COND TRUE !isnan_double(x) [L20] __uint32_t msw, lsw; [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (msw) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (lsw) = ew_u.parts.lsw [L29-L30] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L32-L33] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L35-L36] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L39-L40] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L43] return 0; [L47] COND TRUE __fpclassify_double(x) == 0 [L48] return y; [L66] double res = fmin_double(x, y); [L69] COND TRUE res != x [L70] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 209 SDtfs, 40 SDslu, 242 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, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred 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, 40 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 80 NumberOfCodeBlocks, 80 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 60 ConstructedInterpolants, 0 QuantifiedInterpolants, 930 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...