/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_1251b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 03:46:25,771 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 03:46:25,774 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 03:46:25,833 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-12-22 03:46:25,921 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 03:46:25,922 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 03:46:25,923 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 03:46:25,924 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 03:46:25,978 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 03:46:25,978 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 03:46:25,982 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 03:46:25,983 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 03:46:25,983 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 03:46:25,983 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 03:46:25,984 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 03:46:25,984 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 03:46:25,984 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 03:46:25,985 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 03:46:25,986 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 03:46:25,986 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 03:46:25,986 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 03:46:25,987 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 03:46:25,987 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 03:46:25,987 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 03:46:25,987 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 03:46:25,988 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 03:46:25,988 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 03:46:25,988 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 03:46:25,989 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 03:46:25,989 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 03:46:25,989 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 03:46:25,990 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 03:46:25,990 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 03:46:25,990 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 03:46:26,456 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 03:46:26,504 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 03:46:26,508 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 03:46:26,509 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 03:46:26,510 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 03:46:26,511 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1251b.c [2020-12-22 03:46:26,594 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47928cf06/0edf66326b204303b4cd6fc13aa8d492/FLAG3bb898ea3 [2020-12-22 03:46:27,336 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 03:46:27,337 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1251b.c [2020-12-22 03:46:27,346 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47928cf06/0edf66326b204303b4cd6fc13aa8d492/FLAG3bb898ea3 [2020-12-22 03:46:27,687 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47928cf06/0edf66326b204303b4cd6fc13aa8d492 [2020-12-22 03:46:27,690 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 03:46:27,693 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 03:46:27,697 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 03:46:27,698 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 03:46:27,702 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 03:46:27,703 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:46:27" (1/1) ... [2020-12-22 03:46:27,706 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@195469e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:27, skipping insertion in model container [2020-12-22 03:46:27,706 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:46:27" (1/1) ... [2020-12-22 03:46:27,715 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 03:46:27,738 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 03:46:27,922 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_1251b.c[2080,2093] [2020-12-22 03:46:27,926 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 03:46:27,937 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 03:46:27,971 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_1251b.c[2080,2093] [2020-12-22 03:46:27,972 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 03:46:27,994 INFO L208 MainTranslator]: Completed translation [2020-12-22 03:46:27,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:27 WrapperNode [2020-12-22 03:46:27,995 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 03:46:27,996 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 03:46:27,997 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 03:46:27,997 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 03:46:28,006 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 03:46:28,017 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 03:46:28,045 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 03:46:28,046 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 03:46:28,046 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 03:46:28,047 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 03:46:28,056 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 03:46:28,057 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 03:46:28,060 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 03:46:28,060 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 03:46:28,068 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 03:46:28,082 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 03:46:28,087 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 03:46:28,094 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 03:46:28,097 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 03:46:28,098 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 03:46:28,098 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 03:46:28,099 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 03:46:28,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 03:46:28,223 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 03:46:28,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-12-22 03:46:28,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 03:46:28,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 03:46:28,224 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 03:46:28,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 03:46:28,906 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 03:46:28,906 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2020-12-22 03:46:28,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:46:28 BoogieIcfgContainer [2020-12-22 03:46:28,908 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 03:46:28,910 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 03:46:28,910 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 03:46:28,914 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 03:46:28,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 03:46:27" (1/3) ... [2020-12-22 03:46:28,915 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fe36413 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 03:46:28,915 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 03:46:28,916 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fe36413 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 03:46:28,916 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 03:46:28,918 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1251b.c [2020-12-22 03:46:28,925 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 03:46:28,931 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 03:46:28,954 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 03:46:28,987 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 03:46:28,988 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 03:46:28,988 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 03:46:28,988 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 03:46:28,988 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 03:46:28,989 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 03:46:28,989 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 03:46:28,989 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 03:46:29,009 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-12-22 03:46:29,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 03:46:29,016 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:46:29,017 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:46:29,018 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:46:29,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:46:29,026 INFO L82 PathProgramCache]: Analyzing trace with hash -124750094, now seen corresponding path program 1 times [2020-12-22 03:46:29,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:46:29,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540333900] [2020-12-22 03:46:29,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:46:29,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:46:29,210 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 03:46:29,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540333900] [2020-12-22 03:46:29,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:46:29,213 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 03:46:29,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837771275] [2020-12-22 03:46:29,219 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 03:46:29,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:46:29,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 03:46:29,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 03:46:29,238 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 2 states. [2020-12-22 03:46:29,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:46:29,260 INFO L93 Difference]: Finished difference Result 56 states and 87 transitions. [2020-12-22 03:46:29,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 03:46:29,262 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-12-22 03:46:29,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:46:29,273 INFO L225 Difference]: With dead ends: 56 [2020-12-22 03:46:29,274 INFO L226 Difference]: Without dead ends: 26 [2020-12-22 03:46:29,277 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 03:46:29,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-12-22 03:46:29,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-12-22 03:46:29,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-12-22 03:46:29,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 36 transitions. [2020-12-22 03:46:29,319 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 36 transitions. Word has length 11 [2020-12-22 03:46:29,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:46:29,320 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 36 transitions. [2020-12-22 03:46:29,320 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 03:46:29,320 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 36 transitions. [2020-12-22 03:46:29,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-22 03:46:29,321 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:46:29,321 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:46:29,321 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 03:46:29,322 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:46:29,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:46:29,323 INFO L82 PathProgramCache]: Analyzing trace with hash -1352831344, now seen corresponding path program 1 times [2020-12-22 03:46:29,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:46:29,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188300690] [2020-12-22 03:46:29,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:46:29,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:46:29,459 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 03:46:29,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188300690] [2020-12-22 03:46:29,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:46:29,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 03:46:29,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835346127] [2020-12-22 03:46:29,461 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 03:46:29,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:46:29,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 03:46:29,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 03:46:29,463 INFO L87 Difference]: Start difference. First operand 26 states and 36 transitions. Second operand 4 states. [2020-12-22 03:46:29,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:46:29,524 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2020-12-22 03:46:29,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 03:46:29,525 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-12-22 03:46:29,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:46:29,526 INFO L225 Difference]: With dead ends: 40 [2020-12-22 03:46:29,526 INFO L226 Difference]: Without dead ends: 36 [2020-12-22 03:46:29,527 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 03:46:29,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-12-22 03:46:29,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 28. [2020-12-22 03:46:29,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-22 03:46:29,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2020-12-22 03:46:29,534 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 12 [2020-12-22 03:46:29,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:46:29,535 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2020-12-22 03:46:29,535 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 03:46:29,535 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2020-12-22 03:46:29,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 03:46:29,536 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:46:29,536 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:46:29,536 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 03:46:29,536 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:46:29,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:46:29,537 INFO L82 PathProgramCache]: Analyzing trace with hash -1913129681, now seen corresponding path program 1 times [2020-12-22 03:46:29,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:46:29,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958888171] [2020-12-22 03:46:29,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:46:29,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:46:29,605 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 03:46:29,606 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958888171] [2020-12-22 03:46:29,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:46:29,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 03:46:29,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553395649] [2020-12-22 03:46:29,607 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 03:46:29,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:46:29,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 03:46:29,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 03:46:29,609 INFO L87 Difference]: Start difference. First operand 28 states and 38 transitions. Second operand 4 states. [2020-12-22 03:46:29,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:46:29,673 INFO L93 Difference]: Finished difference Result 42 states and 53 transitions. [2020-12-22 03:46:29,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 03:46:29,674 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-12-22 03:46:29,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:46:29,675 INFO L225 Difference]: With dead ends: 42 [2020-12-22 03:46:29,675 INFO L226 Difference]: Without dead ends: 38 [2020-12-22 03:46:29,676 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 03:46:29,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-12-22 03:46:29,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 28. [2020-12-22 03:46:29,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-22 03:46:29,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2020-12-22 03:46:29,682 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 13 [2020-12-22 03:46:29,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:46:29,683 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2020-12-22 03:46:29,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 03:46:29,683 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2020-12-22 03:46:29,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-22 03:46:29,684 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:46:29,684 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:46:29,684 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 03:46:29,684 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:46:29,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:46:29,685 INFO L82 PathProgramCache]: Analyzing trace with hash -1959363189, now seen corresponding path program 1 times [2020-12-22 03:46:29,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:46:29,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167923458] [2020-12-22 03:46:29,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:46:29,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:46:29,770 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 03:46:29,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167923458] [2020-12-22 03:46:29,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:46:29,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 03:46:29,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107083371] [2020-12-22 03:46:29,771 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 03:46:29,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:46:29,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 03:46:29,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 03:46:29,773 INFO L87 Difference]: Start difference. First operand 28 states and 38 transitions. Second operand 4 states. [2020-12-22 03:46:29,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:46:29,855 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2020-12-22 03:46:29,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 03:46:29,856 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-12-22 03:46:29,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:46:29,857 INFO L225 Difference]: With dead ends: 44 [2020-12-22 03:46:29,857 INFO L226 Difference]: Without dead ends: 40 [2020-12-22 03:46:29,857 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 03:46:29,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-12-22 03:46:29,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 28. [2020-12-22 03:46:29,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-22 03:46:29,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2020-12-22 03:46:29,868 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 14 [2020-12-22 03:46:29,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:46:29,871 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2020-12-22 03:46:29,871 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 03:46:29,871 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2020-12-22 03:46:29,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-22 03:46:29,873 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:46:29,873 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:46:29,873 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 03:46:29,873 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:46:29,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:46:29,875 INFO L82 PathProgramCache]: Analyzing trace with hash 1045511114, now seen corresponding path program 1 times [2020-12-22 03:46:29,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:46:29,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783292496] [2020-12-22 03:46:29,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:46:29,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:46:29,973 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 03:46:29,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783292496] [2020-12-22 03:46:29,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:46:29,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 03:46:29,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839621603] [2020-12-22 03:46:29,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 03:46:29,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:46:29,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 03:46:29,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 03:46:29,979 INFO L87 Difference]: Start difference. First operand 28 states and 38 transitions. Second operand 4 states. [2020-12-22 03:46:30,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:46:30,040 INFO L93 Difference]: Finished difference Result 42 states and 53 transitions. [2020-12-22 03:46:30,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 03:46:30,041 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-12-22 03:46:30,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:46:30,042 INFO L225 Difference]: With dead ends: 42 [2020-12-22 03:46:30,042 INFO L226 Difference]: Without dead ends: 38 [2020-12-22 03:46:30,043 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 03:46:30,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-12-22 03:46:30,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 28. [2020-12-22 03:46:30,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-22 03:46:30,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2020-12-22 03:46:30,048 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 15 [2020-12-22 03:46:30,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:46:30,049 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2020-12-22 03:46:30,049 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 03:46:30,049 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2020-12-22 03:46:30,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-22 03:46:30,050 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:46:30,050 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:46:30,050 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 03:46:30,050 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:46:30,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:46:30,051 INFO L82 PathProgramCache]: Analyzing trace with hash 1102769416, now seen corresponding path program 1 times [2020-12-22 03:46:30,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:46:30,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088391045] [2020-12-22 03:46:30,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:46:30,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 03:46:30,093 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 03:46:30,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 03:46:30,138 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 03:46:30,187 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-22 03:46:30,188 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 03:46:30,188 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 03:46:30,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 03:46:30 BoogieIcfgContainer [2020-12-22 03:46:30,248 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 03:46:30,253 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 03:46:30,253 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 03:46:30,253 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 03:46:30,254 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 03:46:30,258 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-22 03:46:30,258 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 03:46:30,262 INFO L168 Benchmark]: Toolchain (without parser) took 2567.53 ms. Allocated memory is still 160.4 MB. Free memory was 135.5 MB in the beginning and 107.5 MB in the end (delta: 28.1 MB). Peak memory consumption was 28.8 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:30,263 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 160.4 MB. Free memory is still 142.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 03:46:30,267 INFO L168 Benchmark]: CACSL2BoogieTranslator took 297.99 ms. Allocated memory is still 160.4 MB. Free memory was 135.4 MB in the beginning and 125.0 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:30,270 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.04 ms. Allocated memory is still 160.4 MB. Free memory was 124.9 MB in the beginning and 123.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:30,277 INFO L168 Benchmark]: Boogie Preprocessor took 48.03 ms. Allocated memory is still 160.4 MB. Free memory was 123.1 MB in the beginning and 121.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:30,277 INFO L168 Benchmark]: RCFGBuilder took 810.91 ms. Allocated memory is still 160.4 MB. Free memory was 121.7 MB in the beginning and 132.5 MB in the end (delta: -10.7 MB). Peak memory consumption was 11.8 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:30,278 INFO L168 Benchmark]: TraceAbstraction took 1338.26 ms. Allocated memory is still 160.4 MB. Free memory was 132.1 MB in the beginning and 108.0 MB in the end (delta: 24.1 MB). Peak memory consumption was 25.4 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:30,278 INFO L168 Benchmark]: Witness Printer took 5.97 ms. Allocated memory is still 160.4 MB. Free memory was 108.0 MB in the beginning and 107.5 MB in the end (delta: 512.6 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 03:46:30,288 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 160.4 MB. Free memory is still 142.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 297.99 ms. Allocated memory is still 160.4 MB. Free memory was 135.4 MB in the beginning and 125.0 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 49.04 ms. Allocated memory is still 160.4 MB. Free memory was 124.9 MB in the beginning and 123.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 48.03 ms. Allocated memory is still 160.4 MB. Free memory was 123.1 MB in the beginning and 121.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 810.91 ms. Allocated memory is still 160.4 MB. Free memory was 121.7 MB in the beginning and 132.5 MB in the end (delta: -10.7 MB). Peak memory consumption was 11.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1338.26 ms. Allocated memory is still 160.4 MB. Free memory was 132.1 MB in the beginning and 108.0 MB in the end (delta: 24.1 MB). Peak memory consumption was 25.4 MB. Max. memory is 8.0 GB. * Witness Printer took 5.97 ms. Allocated memory is still 160.4 MB. Free memory was 108.0 MB in the beginning and 107.5 MB in the end (delta: 512.6 kB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 80]: 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 79, overapproximation of someBinaryArithmeticDOUBLEoperation at line 67. Possible FailurePath: [L66] double x = __VERIFIER_nondet_double(); [L67] double y = 0.0 / 0.0; [L18] return x != x; [L74] COND TRUE !isnan_double(x) [L29] __uint32_t msw, lsw; [L32] ieee_double_shape_type ew_u; [L33] ew_u.value = (x) [L34] EXPR ew_u.parts.msw [L34] (msw) = ew_u.parts.msw [L35] EXPR ew_u.parts.lsw [L35] (lsw) = ew_u.parts.lsw [L38-L39] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L41-L42] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L44-L45] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L48-L49] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L52] return 0; [L57] COND TRUE __fpclassify_double(x) == 0 [L58] return y; [L76] double res = fmax_double(x, y); [L79] COND TRUE res != x [L80] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 209 SDtfs, 40 SDslu, 242 SDs, 0 SdLazy, 84 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 40 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 80 NumberOfCodeBlocks, 80 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 60 ConstructedInterpolants, 0 QuantifiedInterpolants, 930 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...