/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_1232b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 06:11:37,444 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 06:11:37,447 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 06:11:37,482 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 06:11:37,483 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 06:11:37,484 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 06:11:37,486 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 06:11:37,489 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 06:11:37,491 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 06:11:37,492 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 06:11:37,494 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 06:11:37,495 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 06:11:37,496 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 06:11:37,497 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 06:11:37,498 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 06:11:37,500 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 06:11:37,501 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 06:11:37,502 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 06:11:37,504 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 06:11:37,506 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 06:11:37,509 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 06:11:37,510 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 06:11:37,539 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 06:11:37,541 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 06:11:37,544 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-23 06:11:37,545 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-23 06:11:37,545 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-23 06:11:37,546 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-23 06:11:37,547 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-23 06:11:37,548 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-23 06:11:37,548 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 06:11:37,549 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 06:11:37,550 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 06:11:37,551 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 06:11:37,552 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 06:11:37,553 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 06:11:37,553 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 06:11:37,554 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 06:11:37,554 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 06:11:37,555 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 06:11:37,556 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 06:11:37,557 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 06:11:37,584 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 06:11:37,584 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 06:11:37,586 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 06:11:37,586 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 06:11:37,587 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 06:11:37,587 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 06:11:37,587 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 06:11:37,588 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 06:11:37,588 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 06:11:37,588 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 06:11:37,588 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 06:11:37,589 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 06:11:37,589 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 06:11:37,589 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 06:11:37,589 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 06:11:37,590 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 06:11:37,590 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 06:11:37,590 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 06:11:37,590 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 06:11:37,590 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 06:11:37,591 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 06:11:37,591 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 06:11:37,591 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 06:11:37,591 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 06:11:37,591 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 06:11:37,592 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 06:11:37,981 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 06:11:38,017 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 06:11:38,021 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 06:11:38,022 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 06:11:38,023 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 06:11:38,024 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1232b.c [2020-12-23 06:11:38,124 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/d2b648ccd/06b9347c15b042c39aa39e51350edd6b/FLAGd9a43b8ef [2020-12-23 06:11:38,723 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 06:11:38,723 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1232b.c [2020-12-23 06:11:38,731 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/d2b648ccd/06b9347c15b042c39aa39e51350edd6b/FLAGd9a43b8ef [2020-12-23 06:11:39,112 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/d2b648ccd/06b9347c15b042c39aa39e51350edd6b [2020-12-23 06:11:39,115 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 06:11:39,118 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 06:11:39,122 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 06:11:39,122 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 06:11:39,126 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 06:11:39,128 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 06:11:39" (1/1) ... [2020-12-23 06:11:39,131 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53a3bdc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:11:39, skipping insertion in model container [2020-12-23 06:11:39,132 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 06:11:39" (1/1) ... [2020-12-23 06:11:39,141 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 06:11:39,165 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,] [2020-12-23 06:11:39,472 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_1232b.c[1958,1971] [2020-12-23 06:11:39,478 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 06:11:39,494 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,] [2020-12-23 06:11:39,555 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_1232b.c[1958,1971] [2020-12-23 06:11:39,556 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 06:11:39,584 INFO L208 MainTranslator]: Completed translation [2020-12-23 06:11:39,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:11:39 WrapperNode [2020-12-23 06:11:39,585 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 06:11:39,587 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 06:11:39,588 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 06:11:39,588 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 06:11:39,598 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:11:39" (1/1) ... [2020-12-23 06:11:39,622 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:11:39" (1/1) ... [2020-12-23 06:11:39,666 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 06:11:39,668 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 06:11:39,669 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 06:11:39,669 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 06:11:39,680 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:11:39" (1/1) ... [2020-12-23 06:11:39,680 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:11:39" (1/1) ... [2020-12-23 06:11:39,684 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:11:39" (1/1) ... [2020-12-23 06:11:39,684 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:11:39" (1/1) ... [2020-12-23 06:11:39,691 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:11:39" (1/1) ... [2020-12-23 06:11:39,697 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:11:39" (1/1) ... [2020-12-23 06:11:39,699 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:11:39" (1/1) ... [2020-12-23 06:11:39,702 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 06:11:39,703 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 06:11:39,703 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 06:11:39,704 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 06:11:39,705 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:11:39" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 06:11:39,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 06:11:39,802 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 06:11:39,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-12-23 06:11:39,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 06:11:39,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 06:11:39,803 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-23 06:11:39,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-23 06:11:40,200 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 06:11:40,200 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2020-12-23 06:11:40,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 06:11:40 BoogieIcfgContainer [2020-12-23 06:11:40,202 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 06:11:40,207 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 06:11:40,207 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 06:11:40,217 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 06:11:40,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 06:11:39" (1/3) ... [2020-12-23 06:11:40,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ccd807b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 06:11:40, skipping insertion in model container [2020-12-23 06:11:40,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:11:39" (2/3) ... [2020-12-23 06:11:40,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ccd807b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 06:11:40, skipping insertion in model container [2020-12-23 06:11:40,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 06:11:40" (3/3) ... [2020-12-23 06:11:40,224 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1232b.c [2020-12-23 06:11:40,237 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 06:11:40,244 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 06:11:40,266 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 06:11:40,312 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 06:11:40,313 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 06:11:40,313 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 06:11:40,313 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 06:11:40,314 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 06:11:40,314 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 06:11:40,314 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 06:11:40,314 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 06:11:40,335 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-12-23 06:11:40,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-23 06:11:40,342 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:11:40,343 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:11:40,344 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:11:40,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:11:40,352 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2020-12-23 06:11:40,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:11:40,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324555909] [2020-12-23 06:11:40,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:11:40,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:11:40,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:11:40,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324555909] [2020-12-23 06:11:40,591 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:11:40,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 06:11:40,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976433045] [2020-12-23 06:11:40,598 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 06:11:40,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:11:40,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 06:11:40,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 06:11:40,623 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2020-12-23 06:11:40,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:11:40,653 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions. [2020-12-23 06:11:40,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 06:11:40,655 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-12-23 06:11:40,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:11:40,676 INFO L225 Difference]: With dead ends: 62 [2020-12-23 06:11:40,677 INFO L226 Difference]: Without dead ends: 29 [2020-12-23 06:11:40,680 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 [2020-12-23 06:11:40,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-12-23 06:11:40,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-12-23 06:11:40,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-12-23 06:11:40,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2020-12-23 06:11:40,719 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2020-12-23 06:11:40,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:11:40,719 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2020-12-23 06:11:40,720 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 06:11:40,720 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2020-12-23 06:11:40,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 06:11:40,721 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:11:40,721 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:11:40,721 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 06:11:40,722 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:11:40,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:11:40,723 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2020-12-23 06:11:40,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:11:40,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892517664] [2020-12-23 06:11:40,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:11:40,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:11:40,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:11:40,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892517664] [2020-12-23 06:11:40,850 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:11:40,850 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 06:11:40,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182534477] [2020-12-23 06:11:40,854 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 06:11:40,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:11:40,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 06:11:40,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 06:11:40,856 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 4 states. [2020-12-23 06:11:40,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:11:40,946 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2020-12-23 06:11:40,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 06:11:40,947 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-23 06:11:40,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:11:40,949 INFO L225 Difference]: With dead ends: 53 [2020-12-23 06:11:40,949 INFO L226 Difference]: Without dead ends: 44 [2020-12-23 06:11:40,950 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 [2020-12-23 06:11:40,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-12-23 06:11:40,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 31. [2020-12-23 06:11:40,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-23 06:11:40,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-12-23 06:11:40,958 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2020-12-23 06:11:40,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:11:40,959 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-12-23 06:11:40,959 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 06:11:40,959 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-12-23 06:11:40,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-23 06:11:40,960 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:11:40,960 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:11:40,961 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 06:11:40,961 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:11:40,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:11:40,962 INFO L82 PathProgramCache]: Analyzing trace with hash 502201410, now seen corresponding path program 1 times [2020-12-23 06:11:40,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:11:40,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444619771] [2020-12-23 06:11:40,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:11:41,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:11:41,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:11:41,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444619771] [2020-12-23 06:11:41,092 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:11:41,092 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 06:11:41,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684779555] [2020-12-23 06:11:41,093 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 06:11:41,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:11:41,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 06:11:41,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 06:11:41,095 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2020-12-23 06:11:41,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:11:41,175 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2020-12-23 06:11:41,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 06:11:41,176 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-12-23 06:11:41,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:11:41,178 INFO L225 Difference]: With dead ends: 55 [2020-12-23 06:11:41,178 INFO L226 Difference]: Without dead ends: 46 [2020-12-23 06:11:41,178 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 [2020-12-23 06:11:41,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-12-23 06:11:41,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 31. [2020-12-23 06:11:41,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-23 06:11:41,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-12-23 06:11:41,185 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 12 [2020-12-23 06:11:41,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:11:41,185 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-12-23 06:11:41,186 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 06:11:41,186 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-12-23 06:11:41,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-23 06:11:41,186 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:11:41,187 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:11:41,187 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 06:11:41,187 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:11:41,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:11:41,188 INFO L82 PathProgramCache]: Analyzing trace with hash -1951233721, now seen corresponding path program 1 times [2020-12-23 06:11:41,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:11:41,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070513295] [2020-12-23 06:11:41,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:11:41,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:11:41,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:11:41,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070513295] [2020-12-23 06:11:41,248 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:11:41,248 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 06:11:41,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713646328] [2020-12-23 06:11:41,249 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 06:11:41,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:11:41,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 06:11:41,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 06:11:41,250 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2020-12-23 06:11:41,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:11:41,376 INFO L93 Difference]: Finished difference Result 57 states and 71 transitions. [2020-12-23 06:11:41,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 06:11:41,377 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-12-23 06:11:41,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:11:41,382 INFO L225 Difference]: With dead ends: 57 [2020-12-23 06:11:41,382 INFO L226 Difference]: Without dead ends: 48 [2020-12-23 06:11:41,383 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 [2020-12-23 06:11:41,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-12-23 06:11:41,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 31. [2020-12-23 06:11:41,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-23 06:11:41,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-12-23 06:11:41,402 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 13 [2020-12-23 06:11:41,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:11:41,402 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-12-23 06:11:41,403 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 06:11:41,403 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-12-23 06:11:41,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 06:11:41,405 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:11:41,406 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:11:41,407 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 06:11:41,407 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:11:41,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:11:41,408 INFO L82 PathProgramCache]: Analyzing trace with hash -555760345, now seen corresponding path program 1 times [2020-12-23 06:11:41,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:11:41,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230731248] [2020-12-23 06:11:41,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:11:41,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:11:41,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:11:41,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230731248] [2020-12-23 06:11:41,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:11:41,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 06:11:41,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257236184] [2020-12-23 06:11:41,520 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 06:11:41,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:11:41,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 06:11:41,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 06:11:41,523 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2020-12-23 06:11:41,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:11:41,584 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2020-12-23 06:11:41,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 06:11:41,584 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-12-23 06:11:41,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:11:41,585 INFO L225 Difference]: With dead ends: 55 [2020-12-23 06:11:41,585 INFO L226 Difference]: Without dead ends: 46 [2020-12-23 06:11:41,586 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 [2020-12-23 06:11:41,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-12-23 06:11:41,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 31. [2020-12-23 06:11:41,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-23 06:11:41,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-12-23 06:11:41,591 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 14 [2020-12-23 06:11:41,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:11:41,591 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-12-23 06:11:41,592 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 06:11:41,592 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-12-23 06:11:41,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 06:11:41,592 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:11:41,593 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:11:41,593 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 06:11:41,593 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:11:41,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:11:41,594 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2020-12-23 06:11:41,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:11:41,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029306863] [2020-12-23 06:11:41,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:11:41,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 06:11:41,619 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 06:11:41,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 06:11:41,653 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 06:11:41,680 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-23 06:11:41,680 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-23 06:11:41,680 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 06:11:41,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 06:11:41 BoogieIcfgContainer [2020-12-23 06:11:41,716 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 06:11:41,717 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 06:11:41,717 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 06:11:41,717 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 06:11:41,718 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 06:11:40" (3/4) ... [2020-12-23 06:11:41,721 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-23 06:11:41,722 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 06:11:41,724 INFO L168 Benchmark]: Toolchain (without parser) took 2605.43 ms. Allocated memory is still 158.3 MB. Free memory was 134.1 MB in the beginning and 94.3 MB in the end (delta: 39.8 MB). Peak memory consumption was 41.1 MB. Max. memory is 8.0 GB. [2020-12-23 06:11:41,725 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 158.3 MB. Free memory is still 131.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 06:11:41,726 INFO L168 Benchmark]: CACSL2BoogieTranslator took 463.14 ms. Allocated memory is still 158.3 MB. Free memory was 133.8 MB in the beginning and 123.3 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-23 06:11:41,727 INFO L168 Benchmark]: Boogie Procedure Inliner took 80.07 ms. Allocated memory is still 158.3 MB. Free memory was 123.0 MB in the beginning and 121.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 06:11:41,727 INFO L168 Benchmark]: Boogie Preprocessor took 34.21 ms. Allocated memory is still 158.3 MB. Free memory was 121.5 MB in the beginning and 119.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 06:11:41,728 INFO L168 Benchmark]: RCFGBuilder took 499.00 ms. Allocated memory is still 158.3 MB. Free memory was 119.8 MB in the beginning and 99.5 MB in the end (delta: 20.3 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2020-12-23 06:11:41,729 INFO L168 Benchmark]: TraceAbstraction took 1509.41 ms. Allocated memory is still 158.3 MB. Free memory was 99.2 MB in the beginning and 94.9 MB in the end (delta: 4.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 8.0 GB. [2020-12-23 06:11:41,730 INFO L168 Benchmark]: Witness Printer took 4.92 ms. Allocated memory is still 158.3 MB. Free memory was 94.9 MB in the beginning and 94.3 MB in the end (delta: 526.3 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 06:11:41,735 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 158.3 MB. Free memory is still 131.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 463.14 ms. Allocated memory is still 158.3 MB. Free memory was 133.8 MB in the beginning and 123.3 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 80.07 ms. Allocated memory is still 158.3 MB. Free memory was 123.0 MB in the beginning and 121.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 34.21 ms. Allocated memory is still 158.3 MB. Free memory was 121.5 MB in the beginning and 119.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 499.00 ms. Allocated memory is still 158.3 MB. Free memory was 119.8 MB in the beginning and 99.5 MB in the end (delta: 20.3 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1509.41 ms. Allocated memory is still 158.3 MB. Free memory was 99.2 MB in the beginning and 94.9 MB in the end (delta: 4.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 8.0 GB. * Witness Printer took 4.92 ms. Allocated memory is still 158.3 MB. Free memory was 94.9 MB in the beginning and 94.3 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: 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 76. 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...