/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/float-newlib/double_req_bl_1232a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 03:46:25,096 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 03:46:25,100 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 03:46:25,158 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 03:46:25,158 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 03:46:25,163 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 03:46:25,167 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 03:46:25,175 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 03:46:25,179 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 03:46:25,185 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 03:46:25,186 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 03:46:25,188 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2020-12-22 03:46:25,249 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 03:46:25,250 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 03:46:25,251 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 03:46:25,252 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 03:46:25,311 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 03:46:25,311 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 03:46:25,316 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 03:46:25,316 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 03:46:25,317 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 03:46:25,317 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 03:46:25,317 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 03:46:25,317 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 03:46:25,318 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 03:46:25,318 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 03:46:25,319 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 03:46:25,320 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 03:46:25,320 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 03:46:25,320 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 03:46:25,320 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 03:46:25,321 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 03:46:25,321 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 03:46:25,321 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 03:46:25,321 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 03:46:25,322 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 03:46:25,322 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 03:46:25,322 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 03:46:25,323 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 03:46:25,323 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 03:46:25,323 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 03:46:25,323 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 03:46:25,770 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 03:46:25,804 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 03:46:25,808 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 03:46:25,809 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 03:46:25,810 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 03:46:25,814 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1232a.c [2020-12-22 03:46:25,910 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26ffb293b/fd79279132f84694a50f1b72f639a766/FLAG2be06c842 [2020-12-22 03:46:26,604 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 03:46:26,605 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1232a.c [2020-12-22 03:46:26,617 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26ffb293b/fd79279132f84694a50f1b72f639a766/FLAG2be06c842 [2020-12-22 03:46:26,953 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26ffb293b/fd79279132f84694a50f1b72f639a766 [2020-12-22 03:46:26,956 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 03:46:26,959 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 03:46:26,962 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 03:46:26,962 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 03:46:26,970 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 03:46:26,971 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:46:26" (1/1) ... [2020-12-22 03:46:26,973 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@678e4a0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:26, skipping insertion in model container [2020-12-22 03:46:26,973 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:46:26" (1/1) ... [2020-12-22 03:46:26,983 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 03:46:27,005 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 03:46:27,196 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_1232a.c[1957,1970] [2020-12-22 03:46:27,200 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 03:46:27,210 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 03:46:27,246 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_1232a.c[1957,1970] [2020-12-22 03:46:27,248 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 03:46:27,275 INFO L208 MainTranslator]: Completed translation [2020-12-22 03:46:27,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:27 WrapperNode [2020-12-22 03:46:27,276 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 03:46:27,279 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 03:46:27,279 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 03:46:27,279 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 03:46:27,290 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:27" (1/1) ... [2020-12-22 03:46:27,313 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:27" (1/1) ... [2020-12-22 03:46:27,359 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 03:46:27,360 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 03:46:27,361 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 03:46:27,361 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 03:46:27,377 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:27" (1/1) ... [2020-12-22 03:46:27,378 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:27" (1/1) ... [2020-12-22 03:46:27,381 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:27" (1/1) ... [2020-12-22 03:46:27,381 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:27" (1/1) ... [2020-12-22 03:46:27,389 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:27" (1/1) ... [2020-12-22 03:46:27,395 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:27" (1/1) ... [2020-12-22 03:46:27,397 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:27" (1/1) ... [2020-12-22 03:46:27,400 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 03:46:27,401 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 03:46:27,401 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 03:46:27,401 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 03:46:27,402 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:27" (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 03:46:27,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 03:46:27,536 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 03:46:27,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-12-22 03:46:27,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 03:46:27,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 03:46:27,538 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 03:46:27,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 03:46:28,134 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 03:46:28,134 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2020-12-22 03:46:28,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:46:28 BoogieIcfgContainer [2020-12-22 03:46:28,136 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 03:46:28,138 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 03:46:28,138 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 03:46:28,141 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 03:46:28,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 03:46:26" (1/3) ... [2020-12-22 03:46:28,142 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a803ba9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:46:28, skipping insertion in model container [2020-12-22 03:46:28,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:27" (2/3) ... [2020-12-22 03:46:28,143 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a803ba9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:46:28, skipping insertion in model container [2020-12-22 03:46:28,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:46:28" (3/3) ... [2020-12-22 03:46:28,145 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1232a.c [2020-12-22 03:46:28,151 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 03:46:28,157 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 03:46:28,177 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 03:46:28,220 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 03:46:28,220 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 03:46:28,221 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 03:46:28,221 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 03:46:28,222 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 03:46:28,222 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 03:46:28,222 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 03:46:28,222 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 03:46:28,242 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-12-22 03:46:28,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 03:46:28,249 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:46:28,250 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:46:28,251 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:46:28,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:46:28,257 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2020-12-22 03:46:28,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:46:28,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593892901] [2020-12-22 03:46:28,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:46:28,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:46:28,412 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 03:46:28,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593892901] [2020-12-22 03:46:28,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:46:28,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 03:46:28,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539153939] [2020-12-22 03:46:28,420 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 03:46:28,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:46:28,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 03:46:28,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 03:46:28,437 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2020-12-22 03:46:28,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:46:28,457 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions. [2020-12-22 03:46:28,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 03:46:28,459 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-12-22 03:46:28,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:46:28,469 INFO L225 Difference]: With dead ends: 62 [2020-12-22 03:46:28,469 INFO L226 Difference]: Without dead ends: 29 [2020-12-22 03:46:28,472 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 03:46:28,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-12-22 03:46:28,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-12-22 03:46:28,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-12-22 03:46:28,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2020-12-22 03:46:28,512 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2020-12-22 03:46:28,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:46:28,513 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2020-12-22 03:46:28,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 03:46:28,513 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2020-12-22 03:46:28,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 03:46:28,514 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:46:28,514 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:46:28,514 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 03:46:28,515 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:46:28,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:46:28,516 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2020-12-22 03:46:28,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:46:28,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785952265] [2020-12-22 03:46:28,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:46:28,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:46:28,651 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 03:46:28,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785952265] [2020-12-22 03:46:28,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:46:28,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 03:46:28,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950464886] [2020-12-22 03:46:28,654 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 03:46:28,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:46:28,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 03:46:28,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 03:46:28,655 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 4 states. [2020-12-22 03:46:28,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:46:28,738 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2020-12-22 03:46:28,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 03:46:28,741 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-22 03:46:28,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:46:28,744 INFO L225 Difference]: With dead ends: 53 [2020-12-22 03:46:28,744 INFO L226 Difference]: Without dead ends: 44 [2020-12-22 03:46:28,745 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 03:46:28,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-12-22 03:46:28,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 31. [2020-12-22 03:46:28,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-22 03:46:28,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-12-22 03:46:28,761 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2020-12-22 03:46:28,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:46:28,762 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-12-22 03:46:28,763 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 03:46:28,763 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-12-22 03:46:28,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-22 03:46:28,764 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:46:28,765 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:46:28,765 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 03:46:28,765 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:46:28,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:46:28,766 INFO L82 PathProgramCache]: Analyzing trace with hash 502201410, now seen corresponding path program 1 times [2020-12-22 03:46:28,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:46:28,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083282724] [2020-12-22 03:46:28,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:46:28,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:46:28,840 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 03:46:28,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083282724] [2020-12-22 03:46:28,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:46:28,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 03:46:28,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090420653] [2020-12-22 03:46:28,842 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 03:46:28,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:46:28,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 03:46:28,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 03:46:28,843 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2020-12-22 03:46:28,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:46:28,900 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2020-12-22 03:46:28,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 03:46:28,901 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-12-22 03:46:28,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:46:28,902 INFO L225 Difference]: With dead ends: 55 [2020-12-22 03:46:28,902 INFO L226 Difference]: Without dead ends: 46 [2020-12-22 03:46:28,903 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 03:46:28,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-12-22 03:46:28,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 31. [2020-12-22 03:46:28,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-22 03:46:28,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-12-22 03:46:28,909 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 12 [2020-12-22 03:46:28,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:46:28,909 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-12-22 03:46:28,909 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 03:46:28,909 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-12-22 03:46:28,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 03:46:28,910 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:46:28,910 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:46:28,911 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 03:46:28,911 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:46:28,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:46:28,912 INFO L82 PathProgramCache]: Analyzing trace with hash -1951233721, now seen corresponding path program 1 times [2020-12-22 03:46:28,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:46:28,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25083290] [2020-12-22 03:46:28,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:46:28,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:46:28,968 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 03:46:28,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25083290] [2020-12-22 03:46:28,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:46:28,969 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 03:46:28,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114919802] [2020-12-22 03:46:28,970 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 03:46:28,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:46:28,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 03:46:28,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 03:46:28,971 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2020-12-22 03:46:29,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:46:29,029 INFO L93 Difference]: Finished difference Result 57 states and 71 transitions. [2020-12-22 03:46:29,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 03:46:29,030 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-12-22 03:46:29,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:46:29,031 INFO L225 Difference]: With dead ends: 57 [2020-12-22 03:46:29,031 INFO L226 Difference]: Without dead ends: 48 [2020-12-22 03:46:29,032 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 03:46:29,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-12-22 03:46:29,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 31. [2020-12-22 03:46:29,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-22 03:46:29,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-12-22 03:46:29,038 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 13 [2020-12-22 03:46:29,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:46:29,038 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-12-22 03:46:29,038 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 03:46:29,039 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-12-22 03:46:29,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-22 03:46:29,039 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:46:29,040 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:46:29,040 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 03:46:29,040 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:46:29,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:46:29,041 INFO L82 PathProgramCache]: Analyzing trace with hash -555760345, now seen corresponding path program 1 times [2020-12-22 03:46:29,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:46:29,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172555700] [2020-12-22 03:46:29,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:46:29,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:46:29,129 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 03:46:29,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172555700] [2020-12-22 03:46:29,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:46:29,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 03:46:29,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966406594] [2020-12-22 03:46:29,131 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 03:46:29,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:46:29,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 03:46:29,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 03:46:29,135 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2020-12-22 03:46:29,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:46:29,200 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2020-12-22 03:46:29,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 03:46:29,201 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-12-22 03:46:29,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:46:29,202 INFO L225 Difference]: With dead ends: 55 [2020-12-22 03:46:29,202 INFO L226 Difference]: Without dead ends: 46 [2020-12-22 03:46:29,203 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 03:46:29,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-12-22 03:46:29,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 31. [2020-12-22 03:46:29,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-22 03:46:29,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-12-22 03:46:29,208 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 14 [2020-12-22 03:46:29,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:46:29,209 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-12-22 03:46:29,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 03:46:29,209 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-12-22 03:46:29,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-22 03:46:29,210 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:46:29,210 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:46:29,210 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 03:46:29,210 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:46:29,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:46:29,211 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2020-12-22 03:46:29,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:46:29,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407524541] [2020-12-22 03:46:29,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:46:29,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 03:46:29,264 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 03:46:29,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 03:46:29,312 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 03:46:29,363 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-22 03:46:29,363 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 03:46:29,364 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 03:46:29,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 03:46:29 BoogieIcfgContainer [2020-12-22 03:46:29,415 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 03:46:29,416 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 03:46:29,416 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 03:46:29,416 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 03:46:29,417 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:46:28" (3/4) ... [2020-12-22 03:46:29,421 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-22 03:46:29,421 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 03:46:29,424 INFO L168 Benchmark]: Toolchain (without parser) took 2464.32 ms. Allocated memory is still 154.1 MB. Free memory was 128.7 MB in the beginning and 94.0 MB in the end (delta: 34.7 MB). Peak memory consumption was 36.0 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:29,424 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 154.1 MB. Free memory is still 135.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 03:46:29,425 INFO L168 Benchmark]: CACSL2BoogieTranslator took 315.76 ms. Allocated memory is still 154.1 MB. Free memory was 128.5 MB in the beginning and 117.6 MB in the end (delta: 10.9 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:29,426 INFO L168 Benchmark]: Boogie Procedure Inliner took 81.02 ms. Allocated memory is still 154.1 MB. Free memory was 117.6 MB in the beginning and 115.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:29,427 INFO L168 Benchmark]: Boogie Preprocessor took 39.72 ms. Allocated memory is still 154.1 MB. Free memory was 115.7 MB in the beginning and 114.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:29,428 INFO L168 Benchmark]: RCFGBuilder took 734.99 ms. Allocated memory is still 154.1 MB. Free memory was 114.2 MB in the beginning and 123.4 MB in the end (delta: -9.2 MB). Peak memory consumption was 9.3 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:29,429 INFO L168 Benchmark]: TraceAbstraction took 1277.44 ms. Allocated memory is still 154.1 MB. Free memory was 123.0 MB in the beginning and 94.6 MB in the end (delta: 28.4 MB). Peak memory consumption was 28.7 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:29,429 INFO L168 Benchmark]: Witness Printer took 5.53 ms. Allocated memory is still 154.1 MB. Free memory was 94.6 MB in the beginning and 94.0 MB in the end (delta: 528.3 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:29,434 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 154.1 MB. Free memory is still 135.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 315.76 ms. Allocated memory is still 154.1 MB. Free memory was 128.5 MB in the beginning and 117.6 MB in the end (delta: 10.9 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 81.02 ms. Allocated memory is still 154.1 MB. Free memory was 117.6 MB in the beginning and 115.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 39.72 ms. Allocated memory is still 154.1 MB. Free memory was 115.7 MB in the beginning and 114.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 734.99 ms. Allocated memory is still 154.1 MB. Free memory was 114.2 MB in the beginning and 123.4 MB in the end (delta: -9.2 MB). Peak memory consumption was 9.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1277.44 ms. Allocated memory is still 154.1 MB. Free memory was 123.0 MB in the beginning and 94.6 MB in the end (delta: 28.4 MB). Peak memory consumption was 28.7 MB. Max. memory is 8.0 GB. * Witness Printer took 5.53 ms. Allocated memory is still 154.1 MB. Free memory was 94.6 MB in the beginning and 94.0 MB in the end (delta: 528.3 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 82]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 81, overapproximation of someUnaryDOUBLEoperation at line 77. Possible FailurePath: [L76] double x = 0.0; [L77] double y = -0.0; [L21] __uint32_t msw, lsw; [L24] ieee_double_shape_type ew_u; [L25] ew_u.value = (x) [L26] EXPR ew_u.parts.msw [L26] (msw) = ew_u.parts.msw [L27] EXPR ew_u.parts.lsw [L27] (lsw) = ew_u.parts.lsw [L30-L31] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L33-L34] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L36-L37] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L40-L41] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L44] return 0; [L48] COND TRUE __fpclassify_double(x) == 0 [L49] return y; [L78] double res = fmin_double(x, y); [L81] EXPR res == -0.0 && __signbit_double(res) == 1 [L81] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L82] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.1s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.3s, 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...