/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/float_req_bl_1250.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 16:07:06,311 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 16:07:06,315 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 16:07:06,376 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 16:07:06,377 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 16:07:06,380 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 16:07:06,385 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 16:07:06,390 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 16:07:06,394 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 16:07:06,401 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 16:07:06,405 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 16:07:06,407 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 16:07:06,407 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 16:07:06,410 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 16:07:06,412 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 16:07:06,414 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 16:07:06,427 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 16:07:06,431 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 16:07:06,438 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 16:07:06,446 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 16:07:06,448 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 16:07:06,450 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 16:07:06,452 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 16:07:06,455 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 16:07:06,464 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 16:07:06,469 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 16:07:06,470 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 16:07:06,472 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 16:07:06,473 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 16:07:06,474 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 16:07:06,474 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 16:07:06,475 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 16:07:06,482 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 16:07:06,483 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 16:07:06,484 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 16:07:06,485 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 16:07:06,490 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 16:07:06,539 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 16:07:06,540 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 16:07:06,543 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 16:07:06,544 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 16:07:06,544 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 16:07:06,544 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 16:07:06,544 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 16:07:06,545 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 16:07:06,545 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 16:07:06,545 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 16:07:06,546 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 16:07:06,547 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 16:07:06,547 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 16:07:06,547 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 16:07:06,547 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 16:07:06,547 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 16:07:06,548 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 16:07:06,548 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 16:07:06,548 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 16:07:06,548 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 16:07:06,548 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 16:07:06,549 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 16:07:06,549 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 16:07:06,549 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 16:07:06,549 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 16:07:06,550 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 16:07:06,991 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 16:07:07,032 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 16:07:07,036 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 16:07:07,037 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 16:07:07,038 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 16:07:07,039 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1250.c [2021-01-06 16:07:07,119 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/dd9d31e3a/eef99e1d016b41c886393e1dc9a3b6cd/FLAG1da954c2d [2021-01-06 16:07:07,875 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 16:07:07,876 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1250.c [2021-01-06 16:07:07,892 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/dd9d31e3a/eef99e1d016b41c886393e1dc9a3b6cd/FLAG1da954c2d [2021-01-06 16:07:08,236 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/dd9d31e3a/eef99e1d016b41c886393e1dc9a3b6cd [2021-01-06 16:07:08,239 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 16:07:08,241 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 16:07:08,246 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 16:07:08,246 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 16:07:08,250 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 16:07:08,251 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 04:07:08" (1/1) ... [2021-01-06 16:07:08,254 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@89ce296 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:07:08, skipping insertion in model container [2021-01-06 16:07:08,254 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 04:07:08" (1/1) ... [2021-01-06 16:07:08,264 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 16:07:08,285 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: lhs: StructLHS[VariableLHS[~gf_u~0,],value] left hand side expression in assignment: lhs: VariableLHS[~w~0,] [2021-01-06 16:07:08,468 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/float_req_bl_1250.c[1719,1732] [2021-01-06 16:07:08,471 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 16:07:08,479 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#gf_u~0,],base],StructAccessExpression[IdentifierExpression[~#gf_u~0,],offset]]] left hand side expression in assignment: lhs: VariableLHS[~w~0,] [2021-01-06 16:07:08,502 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/float_req_bl_1250.c[1719,1732] [2021-01-06 16:07:08,503 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 16:07:08,525 INFO L208 MainTranslator]: Completed translation [2021-01-06 16:07:08,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:07:08 WrapperNode [2021-01-06 16:07:08,526 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 16:07:08,527 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 16:07:08,528 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 16:07:08,528 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 16:07:08,536 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:07:08" (1/1) ... [2021-01-06 16:07:08,544 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:07:08" (1/1) ... [2021-01-06 16:07:08,573 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 16:07:08,574 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 16:07:08,575 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 16:07:08,575 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 16:07:08,586 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:07:08" (1/1) ... [2021-01-06 16:07:08,586 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:07:08" (1/1) ... [2021-01-06 16:07:08,589 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:07:08" (1/1) ... [2021-01-06 16:07:08,590 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:07:08" (1/1) ... [2021-01-06 16:07:08,597 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:07:08" (1/1) ... [2021-01-06 16:07:08,602 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:07:08" (1/1) ... [2021-01-06 16:07:08,607 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:07:08" (1/1) ... [2021-01-06 16:07:08,613 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 16:07:08,617 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 16:07:08,617 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 16:07:08,618 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 16:07:08,618 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:07:08" (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 16:07:08,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 16:07:08,727 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 16:07:08,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-01-06 16:07:08,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 16:07:08,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 16:07:08,727 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-01-06 16:07:08,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-06 16:07:09,229 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 16:07:09,230 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-01-06 16:07:09,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:07:09 BoogieIcfgContainer [2021-01-06 16:07:09,232 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 16:07:09,234 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 16:07:09,234 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 16:07:09,239 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 16:07:09,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 04:07:08" (1/3) ... [2021-01-06 16:07:09,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78e38dbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 04:07:09, skipping insertion in model container [2021-01-06 16:07:09,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:07:08" (2/3) ... [2021-01-06 16:07:09,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78e38dbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 04:07:09, skipping insertion in model container [2021-01-06 16:07:09,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:07:09" (3/3) ... [2021-01-06 16:07:09,244 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1250.c [2021-01-06 16:07:09,253 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 16:07:09,260 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 16:07:09,287 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-01-06 16:07:09,343 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 16:07:09,346 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 16:07:09,346 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 16:07:09,347 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 16:07:09,347 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 16:07:09,347 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 16:07:09,347 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 16:07:09,347 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 16:07:09,380 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2021-01-06 16:07:09,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-06 16:07:09,387 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:07:09,388 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:07:09,389 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:07:09,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:07:09,396 INFO L82 PathProgramCache]: Analyzing trace with hash -958093107, now seen corresponding path program 1 times [2021-01-06 16:07:09,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:07:09,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768326226] [2021-01-06 16:07:09,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:07:09,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:07:09,601 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 16:07:09,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768326226] [2021-01-06 16:07:09,603 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:07:09,603 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 16:07:09,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797604610] [2021-01-06 16:07:09,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 16:07:09,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:07:09,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 16:07:09,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 16:07:09,631 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2021-01-06 16:07:09,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:07:09,659 INFO L93 Difference]: Finished difference Result 54 states and 84 transitions. [2021-01-06 16:07:09,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 16:07:09,660 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2021-01-06 16:07:09,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:07:09,673 INFO L225 Difference]: With dead ends: 54 [2021-01-06 16:07:09,673 INFO L226 Difference]: Without dead ends: 25 [2021-01-06 16:07:09,676 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 16:07:09,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-01-06 16:07:09,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-01-06 16:07:09,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2021-01-06 16:07:09,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 35 transitions. [2021-01-06 16:07:09,719 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 35 transitions. Word has length 10 [2021-01-06 16:07:09,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:07:09,720 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 35 transitions. [2021-01-06 16:07:09,720 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 16:07:09,720 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2021-01-06 16:07:09,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-01-06 16:07:09,721 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:07:09,721 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:07:09,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 16:07:09,722 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:07:09,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:07:09,723 INFO L82 PathProgramCache]: Analyzing trace with hash 1001566992, now seen corresponding path program 1 times [2021-01-06 16:07:09,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:07:09,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681564959] [2021-01-06 16:07:09,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:07:09,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:07:09,826 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 16:07:09,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681564959] [2021-01-06 16:07:09,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:07:09,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 16:07:09,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568814812] [2021-01-06 16:07:09,829 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 16:07:09,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:07:09,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 16:07:09,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 16:07:09,831 INFO L87 Difference]: Start difference. First operand 25 states and 35 transitions. Second operand 4 states. [2021-01-06 16:07:09,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:07:09,894 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2021-01-06 16:07:09,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 16:07:09,895 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2021-01-06 16:07:09,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:07:09,897 INFO L225 Difference]: With dead ends: 41 [2021-01-06 16:07:09,897 INFO L226 Difference]: Without dead ends: 36 [2021-01-06 16:07:09,898 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 16:07:09,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-01-06 16:07:09,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 27. [2021-01-06 16:07:09,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-01-06 16:07:09,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2021-01-06 16:07:09,906 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 11 [2021-01-06 16:07:09,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:07:09,907 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2021-01-06 16:07:09,907 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 16:07:09,907 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2021-01-06 16:07:09,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-01-06 16:07:09,908 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:07:09,908 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:07:09,908 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 16:07:09,909 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:07:09,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:07:09,909 INFO L82 PathProgramCache]: Analyzing trace with hash 502183504, now seen corresponding path program 1 times [2021-01-06 16:07:09,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:07:09,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455856578] [2021-01-06 16:07:09,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:07:09,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:07:09,983 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 16:07:09,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455856578] [2021-01-06 16:07:09,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:07:09,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 16:07:09,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109569493] [2021-01-06 16:07:09,985 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 16:07:09,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:07:09,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 16:07:09,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 16:07:09,987 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 4 states. [2021-01-06 16:07:10,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:07:10,065 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2021-01-06 16:07:10,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 16:07:10,067 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2021-01-06 16:07:10,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:07:10,070 INFO L225 Difference]: With dead ends: 43 [2021-01-06 16:07:10,070 INFO L226 Difference]: Without dead ends: 38 [2021-01-06 16:07:10,073 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 16:07:10,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-01-06 16:07:10,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 27. [2021-01-06 16:07:10,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-01-06 16:07:10,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2021-01-06 16:07:10,086 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 12 [2021-01-06 16:07:10,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:07:10,086 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2021-01-06 16:07:10,086 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 16:07:10,086 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2021-01-06 16:07:10,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-06 16:07:10,088 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:07:10,089 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:07:10,089 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-06 16:07:10,089 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:07:10,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:07:10,090 INFO L82 PathProgramCache]: Analyzing trace with hash -1951251627, now seen corresponding path program 1 times [2021-01-06 16:07:10,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:07:10,092 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57103459] [2021-01-06 16:07:10,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:07:10,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:07:10,211 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 16:07:10,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57103459] [2021-01-06 16:07:10,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:07:10,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 16:07:10,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078864003] [2021-01-06 16:07:10,217 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 16:07:10,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:07:10,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 16:07:10,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 16:07:10,219 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 4 states. [2021-01-06 16:07:10,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:07:10,279 INFO L93 Difference]: Finished difference Result 45 states and 56 transitions. [2021-01-06 16:07:10,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 16:07:10,280 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2021-01-06 16:07:10,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:07:10,281 INFO L225 Difference]: With dead ends: 45 [2021-01-06 16:07:10,282 INFO L226 Difference]: Without dead ends: 40 [2021-01-06 16:07:10,282 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 16:07:10,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-01-06 16:07:10,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 27. [2021-01-06 16:07:10,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-01-06 16:07:10,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2021-01-06 16:07:10,288 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 13 [2021-01-06 16:07:10,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:07:10,289 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2021-01-06 16:07:10,289 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 16:07:10,289 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2021-01-06 16:07:10,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-06 16:07:10,290 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:07:10,290 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:07:10,290 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-06 16:07:10,291 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:07:10,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:07:10,291 INFO L82 PathProgramCache]: Analyzing trace with hash -555778251, now seen corresponding path program 1 times [2021-01-06 16:07:10,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:07:10,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656891741] [2021-01-06 16:07:10,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:07:10,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:07:10,353 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 16:07:10,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656891741] [2021-01-06 16:07:10,354 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:07:10,357 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 16:07:10,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330972733] [2021-01-06 16:07:10,358 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 16:07:10,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:07:10,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 16:07:10,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 16:07:10,361 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 4 states. [2021-01-06 16:07:10,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:07:10,451 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2021-01-06 16:07:10,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 16:07:10,453 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2021-01-06 16:07:10,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:07:10,455 INFO L225 Difference]: With dead ends: 43 [2021-01-06 16:07:10,455 INFO L226 Difference]: Without dead ends: 38 [2021-01-06 16:07:10,456 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 16:07:10,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-01-06 16:07:10,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 27. [2021-01-06 16:07:10,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-01-06 16:07:10,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2021-01-06 16:07:10,471 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 14 [2021-01-06 16:07:10,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:07:10,472 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2021-01-06 16:07:10,472 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 16:07:10,472 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2021-01-06 16:07:10,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-06 16:07:10,474 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:07:10,474 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:07:10,474 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-06 16:07:10,475 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:07:10,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:07:10,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1219229111, now seen corresponding path program 1 times [2021-01-06 16:07:10,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:07:10,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016407287] [2021-01-06 16:07:10,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:07:10,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-06 16:07:10,543 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-06 16:07:10,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-06 16:07:10,599 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-06 16:07:10,639 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-01-06 16:07:10,639 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-01-06 16:07:10,640 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-06 16:07:10,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 04:07:10 BoogieIcfgContainer [2021-01-06 16:07:10,693 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 16:07:10,696 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 16:07:10,696 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 16:07:10,696 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 16:07:10,697 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:07:09" (3/4) ... [2021-01-06 16:07:10,701 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-01-06 16:07:10,701 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 16:07:10,704 INFO L168 Benchmark]: Toolchain (without parser) took 2461.76 ms. Allocated memory is still 151.0 MB. Free memory was 127.0 MB in the beginning and 62.7 MB in the end (delta: 64.3 MB). Peak memory consumption was 64.3 MB. Max. memory is 8.0 GB. [2021-01-06 16:07:10,705 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 122.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 16:07:10,707 INFO L168 Benchmark]: CACSL2BoogieTranslator took 280.77 ms. Allocated memory is still 151.0 MB. Free memory was 126.8 MB in the beginning and 116.5 MB in the end (delta: 10.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-01-06 16:07:10,711 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.34 ms. Allocated memory is still 151.0 MB. Free memory was 116.5 MB in the beginning and 114.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 16:07:10,717 INFO L168 Benchmark]: Boogie Preprocessor took 38.58 ms. Allocated memory is still 151.0 MB. Free memory was 114.7 MB in the beginning and 113.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 16:07:10,718 INFO L168 Benchmark]: RCFGBuilder took 615.36 ms. Allocated memory is still 151.0 MB. Free memory was 113.3 MB in the beginning and 128.2 MB in the end (delta: -14.9 MB). Peak memory consumption was 15.0 MB. Max. memory is 8.0 GB. [2021-01-06 16:07:10,718 INFO L168 Benchmark]: TraceAbstraction took 1458.58 ms. Allocated memory is still 151.0 MB. Free memory was 127.7 MB in the beginning and 62.7 MB in the end (delta: 65.0 MB). Peak memory consumption was 65.0 MB. Max. memory is 8.0 GB. [2021-01-06 16:07:10,719 INFO L168 Benchmark]: Witness Printer took 5.36 ms. Allocated memory is still 151.0 MB. Free memory is still 62.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 16:07:10,726 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 122.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 280.77 ms. Allocated memory is still 151.0 MB. Free memory was 126.8 MB in the beginning and 116.5 MB in the end (delta: 10.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 46.34 ms. Allocated memory is still 151.0 MB. Free memory was 116.5 MB in the beginning and 114.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 38.58 ms. Allocated memory is still 151.0 MB. Free memory was 114.7 MB in the beginning and 113.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 615.36 ms. Allocated memory is still 151.0 MB. Free memory was 113.3 MB in the beginning and 128.2 MB in the end (delta: -14.9 MB). Peak memory consumption was 15.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1458.58 ms. Allocated memory is still 151.0 MB. Free memory was 127.7 MB in the beginning and 62.7 MB in the end (delta: 65.0 MB). Peak memory consumption was 65.0 MB. Max. memory is 8.0 GB. * Witness Printer took 5.36 ms. Allocated memory is still 151.0 MB. Free memory is still 62.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 67]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 56, overapproximation of someBinaryArithmeticFLOAToperation at line 62. Possible FailurePath: [L62] float x = 0.0f / 0.0f; [L63] float y = 0.0f / 0.0f; [L22] __uint32_t w; [L25] ieee_float_shape_type gf_u; [L26] gf_u.value = (x) [L27] EXPR gf_u.word [L27] (w) = gf_u.word [L30] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L32-L33] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L35-L36] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L38] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L41] return 0; [L45] COND TRUE __fpclassify_float(x) == 0 [L46] return y; [L64] float res = fmax_float(x, y); [L56] return x != x; [L66] COND TRUE !isnan_float(res) [L67] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.3s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 206 SDtfs, 44 SDslu, 238 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=28occurred 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, 44 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s 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...