/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_1252b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 03:46:26,286 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 03:46:26,291 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 03:46:26,357 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-12-22 03:46:26,388 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 03:46:26,392 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 03:46:26,395 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 03:46:26,397 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 03:46:26,399 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 03:46:26,404 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 03:46:26,415 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 03:46:26,424 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 03:46:26,426 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 03:46:26,429 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 03:46:26,431 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 03:46:26,433 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 03:46:26,454 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 03:46:26,466 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 03:46:26,467 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 03:46:26,468 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 03:46:26,469 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 03:46:26,522 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 03:46:26,522 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 03:46:26,527 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 03:46:26,528 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 03:46:26,528 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 03:46:26,528 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 03:46:26,528 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 03:46:26,529 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 03:46:26,529 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 03:46:26,529 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 03:46:26,531 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 03:46:26,531 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 03:46:26,531 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 03:46:26,531 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 03:46:26,531 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 03:46:26,532 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 03:46:26,532 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 03:46:26,532 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 03:46:26,532 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 03:46:26,532 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 03:46:26,533 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 03:46:26,533 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 03:46:26,533 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 03:46:26,534 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 03:46:26,534 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 03:46:26,534 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 03:46:26,989 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 03:46:27,018 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 03:46:27,021 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 03:46:27,023 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 03:46:27,024 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 03:46:27,025 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1252b.c [2020-12-22 03:46:27,111 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2b37ca75/efc02dff359f429d9bc58fb719ee9bbb/FLAG252a5f506 [2020-12-22 03:46:27,789 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 03:46:27,790 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1252b.c [2020-12-22 03:46:27,799 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2b37ca75/efc02dff359f429d9bc58fb719ee9bbb/FLAG252a5f506 [2020-12-22 03:46:28,148 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2b37ca75/efc02dff359f429d9bc58fb719ee9bbb [2020-12-22 03:46:28,153 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 03:46:28,155 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 03:46:28,157 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 03:46:28,157 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 03:46:28,162 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 03:46:28,163 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:46:28" (1/1) ... [2020-12-22 03:46:28,164 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31ee7637 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:28, skipping insertion in model container [2020-12-22 03:46:28,164 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:46:28" (1/1) ... [2020-12-22 03:46:28,173 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 03:46:28,193 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 03:46:28,369 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1252b.c[2154,2167] [2020-12-22 03:46:28,372 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 03:46:28,381 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 03:46:28,409 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1252b.c[2154,2167] [2020-12-22 03:46:28,409 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 03:46:28,427 INFO L208 MainTranslator]: Completed translation [2020-12-22 03:46:28,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:28 WrapperNode [2020-12-22 03:46:28,428 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 03:46:28,429 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 03:46:28,430 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 03:46:28,430 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 03:46:28,438 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:28" (1/1) ... [2020-12-22 03:46:28,448 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:28" (1/1) ... [2020-12-22 03:46:28,482 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 03:46:28,483 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 03:46:28,483 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 03:46:28,483 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 03:46:28,493 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:28" (1/1) ... [2020-12-22 03:46:28,493 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:28" (1/1) ... [2020-12-22 03:46:28,497 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:28" (1/1) ... [2020-12-22 03:46:28,497 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:28" (1/1) ... [2020-12-22 03:46:28,505 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:28" (1/1) ... [2020-12-22 03:46:28,510 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:28" (1/1) ... [2020-12-22 03:46:28,513 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:28" (1/1) ... [2020-12-22 03:46:28,519 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 03:46:28,521 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 03:46:28,521 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 03:46:28,521 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 03:46:28,522 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:28" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-12-22 03:46:28,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 03:46:28,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 03:46:28,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-12-22 03:46:28,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 03:46:28,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 03:46:28,618 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 03:46:28,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 03:46:29,206 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 03:46:29,206 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2020-12-22 03:46:29,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:46:29 BoogieIcfgContainer [2020-12-22 03:46:29,208 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 03:46:29,210 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 03:46:29,211 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 03:46:29,219 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 03:46:29,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 03:46:28" (1/3) ... [2020-12-22 03:46:29,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a92696e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:46:29, skipping insertion in model container [2020-12-22 03:46:29,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:28" (2/3) ... [2020-12-22 03:46:29,224 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a92696e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:46:29, skipping insertion in model container [2020-12-22 03:46:29,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:46:29" (3/3) ... [2020-12-22 03:46:29,226 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1252b.c [2020-12-22 03:46:29,235 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 03:46:29,241 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 03:46:29,264 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 03:46:29,309 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 03:46:29,311 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 03:46:29,311 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 03:46:29,311 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 03:46:29,311 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 03:46:29,312 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 03:46:29,312 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 03:46:29,312 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 03:46:29,334 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-12-22 03:46:29,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 03:46:29,341 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:46:29,342 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:46:29,343 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:46:29,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:46:29,350 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2020-12-22 03:46:29,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:46:29,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591893305] [2020-12-22 03:46:29,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:46:29,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:46:29,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:46:29,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591893305] [2020-12-22 03:46:29,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:46:29,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 03:46:29,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741307719] [2020-12-22 03:46:29,579 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 03:46:29,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:46:29,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 03:46:29,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 03:46:29,601 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2020-12-22 03:46:29,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:46:29,631 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions. [2020-12-22 03:46:29,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 03:46:29,633 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-12-22 03:46:29,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:46:29,650 INFO L225 Difference]: With dead ends: 62 [2020-12-22 03:46:29,651 INFO L226 Difference]: Without dead ends: 29 [2020-12-22 03:46:29,654 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 [2020-12-22 03:46:29,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-12-22 03:46:29,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-12-22 03:46:29,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-12-22 03:46:29,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2020-12-22 03:46:29,693 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2020-12-22 03:46:29,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:46:29,694 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2020-12-22 03:46:29,694 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 03:46:29,694 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2020-12-22 03:46:29,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 03:46:29,695 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:46:29,695 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:46:29,696 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 03:46:29,696 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:46:29,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:46:29,697 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2020-12-22 03:46:29,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:46:29,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842305521] [2020-12-22 03:46:29,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:46:29,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:46:29,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:46:29,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842305521] [2020-12-22 03:46:29,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:46:29,803 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 03:46:29,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145648163] [2020-12-22 03:46:29,806 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 03:46:29,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:46:29,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 03:46:29,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 03:46:29,809 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 4 states. [2020-12-22 03:46:29,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:46:29,917 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2020-12-22 03:46:29,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 03:46:29,918 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-22 03:46:29,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:46:29,921 INFO L225 Difference]: With dead ends: 53 [2020-12-22 03:46:29,921 INFO L226 Difference]: Without dead ends: 44 [2020-12-22 03:46:29,923 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 [2020-12-22 03:46:29,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-12-22 03:46:29,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 31. [2020-12-22 03:46:29,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-22 03:46:29,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-12-22 03:46:29,939 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2020-12-22 03:46:29,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:46:29,939 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-12-22 03:46:29,940 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 03:46:29,940 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-12-22 03:46:29,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-22 03:46:29,941 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:46:29,941 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:46:29,941 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 03:46:29,941 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:46:29,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:46:29,942 INFO L82 PathProgramCache]: Analyzing trace with hash 502201410, now seen corresponding path program 1 times [2020-12-22 03:46:29,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:46:29,943 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875440211] [2020-12-22 03:46:29,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:46:29,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:46:29,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:46:29,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875440211] [2020-12-22 03:46:29,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:46:29,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 03:46:29,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461108231] [2020-12-22 03:46:29,998 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 03:46:29,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:46:29,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 03:46:29,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 03:46:29,999 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2020-12-22 03:46:30,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:46:30,079 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2020-12-22 03:46:30,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 03:46:30,081 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-12-22 03:46:30,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:46:30,084 INFO L225 Difference]: With dead ends: 55 [2020-12-22 03:46:30,085 INFO L226 Difference]: Without dead ends: 46 [2020-12-22 03:46:30,087 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 03:46:30,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-12-22 03:46:30,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 31. [2020-12-22 03:46:30,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-22 03:46:30,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-12-22 03:46:30,103 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 12 [2020-12-22 03:46:30,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:46:30,104 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-12-22 03:46:30,105 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 03:46:30,105 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-12-22 03:46:30,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 03:46:30,107 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:46:30,107 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:46:30,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 03:46:30,108 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:46:30,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:46:30,108 INFO L82 PathProgramCache]: Analyzing trace with hash -1951233721, now seen corresponding path program 1 times [2020-12-22 03:46:30,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:46:30,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069576101] [2020-12-22 03:46:30,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:46:30,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:46:30,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:46:30,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069576101] [2020-12-22 03:46:30,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:46:30,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 03:46:30,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176448149] [2020-12-22 03:46:30,198 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 03:46:30,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:46:30,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 03:46:30,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 03:46:30,200 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2020-12-22 03:46:30,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:46:30,287 INFO L93 Difference]: Finished difference Result 57 states and 71 transitions. [2020-12-22 03:46:30,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 03:46:30,290 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-12-22 03:46:30,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:46:30,291 INFO L225 Difference]: With dead ends: 57 [2020-12-22 03:46:30,291 INFO L226 Difference]: Without dead ends: 48 [2020-12-22 03:46:30,292 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 [2020-12-22 03:46:30,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-12-22 03:46:30,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 31. [2020-12-22 03:46:30,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-22 03:46:30,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-12-22 03:46:30,305 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 13 [2020-12-22 03:46:30,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:46:30,306 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-12-22 03:46:30,306 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 03:46:30,306 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-12-22 03:46:30,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-22 03:46:30,307 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:46:30,307 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:46:30,307 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 03:46:30,307 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:46:30,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:46:30,309 INFO L82 PathProgramCache]: Analyzing trace with hash -555760345, now seen corresponding path program 1 times [2020-12-22 03:46:30,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:46:30,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888285653] [2020-12-22 03:46:30,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:46:30,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:46:30,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:46:30,374 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888285653] [2020-12-22 03:46:30,375 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:46:30,375 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 03:46:30,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132443041] [2020-12-22 03:46:30,376 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 03:46:30,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:46:30,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 03:46:30,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 03:46:30,377 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2020-12-22 03:46:30,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:46:30,425 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2020-12-22 03:46:30,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 03:46:30,425 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-12-22 03:46:30,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:46:30,426 INFO L225 Difference]: With dead ends: 55 [2020-12-22 03:46:30,427 INFO L226 Difference]: Without dead ends: 46 [2020-12-22 03:46:30,427 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 [2020-12-22 03:46:30,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-12-22 03:46:30,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 31. [2020-12-22 03:46:30,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-22 03:46:30,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-12-22 03:46:30,434 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 14 [2020-12-22 03:46:30,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:46:30,434 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-12-22 03:46:30,434 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 03:46:30,434 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-12-22 03:46:30,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-22 03:46:30,435 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:46:30,435 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:46:30,435 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 03:46:30,436 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:46:30,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:46:30,437 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2020-12-22 03:46:30,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:46:30,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493717175] [2020-12-22 03:46:30,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:46:30,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 03:46:30,465 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 03:46:30,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 03:46:30,487 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 03:46:30,521 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-22 03:46:30,522 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 03:46:30,522 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 03:46:30,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 03:46:30 BoogieIcfgContainer [2020-12-22 03:46:30,584 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 03:46:30,589 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 03:46:30,590 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 03:46:30,590 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 03:46:30,590 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:46:29" (3/4) ... [2020-12-22 03:46:30,594 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-22 03:46:30,595 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 03:46:30,598 INFO L168 Benchmark]: Toolchain (without parser) took 2441.32 ms. Allocated memory is still 164.6 MB. Free memory was 139.9 MB in the beginning and 74.2 MB in the end (delta: 65.7 MB). Peak memory consumption was 64.2 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:30,599 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 164.6 MB. Free memory is still 138.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 03:46:30,604 INFO L168 Benchmark]: CACSL2BoogieTranslator took 271.49 ms. Allocated memory is still 164.6 MB. Free memory was 139.6 MB in the beginning and 129.1 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:30,606 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.41 ms. Allocated memory is still 164.6 MB. Free memory was 129.1 MB in the beginning and 127.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:30,607 INFO L168 Benchmark]: Boogie Preprocessor took 37.25 ms. Allocated memory is still 164.6 MB. Free memory was 127.3 MB in the beginning and 125.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:30,608 INFO L168 Benchmark]: RCFGBuilder took 687.89 ms. Allocated memory is still 164.6 MB. Free memory was 125.9 MB in the beginning and 140.3 MB in the end (delta: -14.3 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:30,609 INFO L168 Benchmark]: TraceAbstraction took 1373.84 ms. Allocated memory is still 164.6 MB. Free memory was 139.7 MB in the beginning and 74.2 MB in the end (delta: 65.5 MB). Peak memory consumption was 65.0 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:30,609 INFO L168 Benchmark]: Witness Printer took 5.62 ms. Allocated memory is still 164.6 MB. Free memory is still 74.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 03:46:30,617 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 164.6 MB. Free memory is still 138.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 271.49 ms. Allocated memory is still 164.6 MB. Free memory was 139.6 MB in the beginning and 129.1 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 52.41 ms. Allocated memory is still 164.6 MB. Free memory was 129.1 MB in the beginning and 127.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 37.25 ms. Allocated memory is still 164.6 MB. Free memory was 127.3 MB in the beginning and 125.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 687.89 ms. Allocated memory is still 164.6 MB. Free memory was 125.9 MB in the beginning and 140.3 MB in the end (delta: -14.3 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1373.84 ms. Allocated memory is still 164.6 MB. Free memory was 139.7 MB in the beginning and 74.2 MB in the end (delta: 65.5 MB). Peak memory consumption was 65.0 MB. Max. memory is 8.0 GB. * Witness Printer took 5.62 ms. Allocated memory is still 164.6 MB. Free memory is still 74.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 87]: 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 86, overapproximation of someUnaryDOUBLEoperation at line 82. Possible FailurePath: [L81] double x = 0.0; [L82] double y = -0.0; [L26] __uint32_t msw, lsw; [L29] ieee_double_shape_type ew_u; [L30] ew_u.value = (x) [L31] EXPR ew_u.parts.msw [L31] (msw) = ew_u.parts.msw [L32] EXPR ew_u.parts.lsw [L32] (lsw) = ew_u.parts.lsw [L35-L36] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L38-L39] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L41-L42] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L45-L46] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L49] return 0; [L54] COND TRUE __fpclassify_double(x) == 0 [L55] return y; [L83] double res = fmax_double(x, y); [L86] EXPR res == 0.0 && __signbit_double(res) == 0 [L86] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L87] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, 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, 0.0s 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, 0.2s 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...