/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_1231b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 06:11:37,118 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 06:11:37,121 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 06:11:37,156 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 06:11:37,157 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 06:11:37,158 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 06:11:37,160 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 06:11:37,163 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 06:11:37,165 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 06:11:37,166 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 06:11:37,167 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 06:11:37,169 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 06:11:37,170 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 06:11:37,171 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 06:11:37,172 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 06:11:37,174 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 06:11:37,175 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 06:11:37,176 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 06:11:37,178 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 06:11:37,181 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 06:11:37,183 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 06:11:37,184 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 06:11:37,204 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 06:11:37,205 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 06:11:37,208 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 06:11:37,212 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 06:11:37,213 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 06:11:37,214 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 06:11:37,215 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 06:11:37,216 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 06:11:37,217 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 06:11:37,218 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 06:11:37,218 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 06:11:37,218 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 06:11:37,219 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 06:11:37,220 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 06:11:37,222 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 06:11:37,250 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 06:11:37,251 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 06:11:37,252 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 06:11:37,252 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 06:11:37,253 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 06:11:37,253 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 06:11:37,253 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 06:11:37,254 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 06:11:37,254 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 06:11:37,254 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 06:11:37,254 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 06:11:37,255 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 06:11:37,255 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 06:11:37,255 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 06:11:37,255 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 06:11:37,256 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 06:11:37,256 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 06:11:37,256 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 06:11:37,256 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 06:11:37,257 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 06:11:37,257 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 06:11:37,257 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 06:11:37,257 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 06:11:37,257 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 06:11:37,258 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 06:11:37,258 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 06:11:37,651 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 06:11:37,695 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 06:11:37,699 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 06:11:37,701 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 06:11:37,702 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 06:11:37,703 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1231b.c [2020-12-23 06:11:37,804 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/82e8ea147/0b9a391ca5cd4f398af8d1f5c77e1936/FLAG92f41e5e6 [2020-12-23 06:11:38,535 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 06:11:38,536 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1231b.c [2020-12-23 06:11:38,549 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/82e8ea147/0b9a391ca5cd4f398af8d1f5c77e1936/FLAG92f41e5e6 [2020-12-23 06:11:38,571 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/82e8ea147/0b9a391ca5cd4f398af8d1f5c77e1936 [2020-12-23 06:11:38,574 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 06:11:38,577 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 06:11:38,578 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 06:11:38,579 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 06:11:38,587 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 06:11:38,588 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 06:11:38" (1/1) ... [2020-12-23 06:11:38,590 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e327b72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:11:38, skipping insertion in model container [2020-12-23 06:11:38,590 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 06:11:38" (1/1) ... [2020-12-23 06:11:38,599 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 06:11:38,616 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: lhs: StructLHS[VariableLHS[~ew_u~0,],value] left hand side expression in assignment: lhs: VariableLHS[~msw~0,] left hand side expression in assignment: lhs: VariableLHS[~lsw~0,] [2020-12-23 06:11:38,810 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1231b.c[1765,1778] [2020-12-23 06:11:38,814 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 06:11:38,824 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#ew_u~0,],base],StructAccessExpression[IdentifierExpression[~#ew_u~0,],offset]]] left hand side expression in assignment: lhs: VariableLHS[~msw~0,] left hand side expression in assignment: lhs: VariableLHS[~lsw~0,] [2020-12-23 06:11:38,853 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1231b.c[1765,1778] [2020-12-23 06:11:38,854 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 06:11:38,873 INFO L208 MainTranslator]: Completed translation [2020-12-23 06:11:38,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:11:38 WrapperNode [2020-12-23 06:11:38,874 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 06:11:38,875 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 06:11:38,875 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 06:11:38,875 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 06:11:38,884 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:11:38" (1/1) ... [2020-12-23 06:11:38,892 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:11:38" (1/1) ... [2020-12-23 06:11:38,920 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 06:11:38,921 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 06:11:38,921 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 06:11:38,921 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 06:11:38,935 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:11:38" (1/1) ... [2020-12-23 06:11:38,935 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:11:38" (1/1) ... [2020-12-23 06:11:38,938 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:11:38" (1/1) ... [2020-12-23 06:11:38,939 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:11:38" (1/1) ... [2020-12-23 06:11:38,946 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:11:38" (1/1) ... [2020-12-23 06:11:38,952 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:11:38" (1/1) ... [2020-12-23 06:11:38,954 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:11:38" (1/1) ... [2020-12-23 06:11:38,958 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 06:11:38,959 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 06:11:38,959 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 06:11:38,959 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 06:11:38,960 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:11:38" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 06:11:39,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 06:11:39,069 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 06:11:39,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-12-23 06:11:39,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 06:11:39,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 06:11:39,070 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-23 06:11:39,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-23 06:11:39,629 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 06:11:39,630 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2020-12-23 06:11:39,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 06:11:39 BoogieIcfgContainer [2020-12-23 06:11:39,632 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 06:11:39,637 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 06:11:39,638 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 06:11:39,642 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 06:11:39,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 06:11:38" (1/3) ... [2020-12-23 06:11:39,643 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d89114a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 06:11:39, skipping insertion in model container [2020-12-23 06:11:39,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:11:38" (2/3) ... [2020-12-23 06:11:39,645 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d89114a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 06:11:39, skipping insertion in model container [2020-12-23 06:11:39,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 06:11:39" (3/3) ... [2020-12-23 06:11:39,651 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1231b.c [2020-12-23 06:11:39,660 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 06:11:39,665 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 06:11:39,689 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 06:11:39,737 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 06:11:39,740 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 06:11:39,740 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 06:11:39,740 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 06:11:39,740 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 06:11:39,740 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 06:11:39,741 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 06:11:39,741 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 06:11:39,761 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-12-23 06:11:39,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 06:11:39,776 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:11:39,777 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:11:39,777 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:11:39,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:11:39,785 INFO L82 PathProgramCache]: Analyzing trace with hash -124750094, now seen corresponding path program 1 times [2020-12-23 06:11:39,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:11:39,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459818596] [2020-12-23 06:11:39,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:11:39,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:11:39,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:11:39,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459818596] [2020-12-23 06:11:39,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:11:39,994 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 06:11:39,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667092324] [2020-12-23 06:11:39,999 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 06:11:40,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:11:40,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 06:11:40,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 06:11:40,018 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 2 states. [2020-12-23 06:11:40,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:11:40,038 INFO L93 Difference]: Finished difference Result 56 states and 87 transitions. [2020-12-23 06:11:40,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 06:11:40,040 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-12-23 06:11:40,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:11:40,051 INFO L225 Difference]: With dead ends: 56 [2020-12-23 06:11:40,052 INFO L226 Difference]: Without dead ends: 26 [2020-12-23 06:11:40,055 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 06:11:40,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-12-23 06:11:40,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-12-23 06:11:40,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-12-23 06:11:40,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 36 transitions. [2020-12-23 06:11:40,095 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 36 transitions. Word has length 11 [2020-12-23 06:11:40,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:11:40,096 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 36 transitions. [2020-12-23 06:11:40,096 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 06:11:40,096 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 36 transitions. [2020-12-23 06:11:40,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-23 06:11:40,097 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:11:40,097 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:11:40,098 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 06:11:40,098 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:11:40,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:11:40,099 INFO L82 PathProgramCache]: Analyzing trace with hash -1352831344, now seen corresponding path program 1 times [2020-12-23 06:11:40,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:11:40,100 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891059618] [2020-12-23 06:11:40,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:11:40,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:11:40,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:11:40,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891059618] [2020-12-23 06:11:40,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:11:40,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 06:11:40,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949269312] [2020-12-23 06:11:40,200 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 06:11:40,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:11:40,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 06:11:40,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 06:11:40,202 INFO L87 Difference]: Start difference. First operand 26 states and 36 transitions. Second operand 4 states. [2020-12-23 06:11:40,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:11:40,265 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2020-12-23 06:11:40,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 06:11:40,266 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-12-23 06:11:40,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:11:40,267 INFO L225 Difference]: With dead ends: 40 [2020-12-23 06:11:40,267 INFO L226 Difference]: Without dead ends: 36 [2020-12-23 06:11:40,268 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 06:11:40,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-12-23 06:11:40,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 28. [2020-12-23 06:11:40,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-23 06:11:40,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2020-12-23 06:11:40,276 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 12 [2020-12-23 06:11:40,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:11:40,277 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2020-12-23 06:11:40,277 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 06:11:40,277 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2020-12-23 06:11:40,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-23 06:11:40,278 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:11:40,278 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:11:40,278 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 06:11:40,278 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:11:40,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:11:40,279 INFO L82 PathProgramCache]: Analyzing trace with hash -1913129681, now seen corresponding path program 1 times [2020-12-23 06:11:40,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:11:40,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555558321] [2020-12-23 06:11:40,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:11:40,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:11:40,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:11:40,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555558321] [2020-12-23 06:11:40,392 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:11:40,392 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 06:11:40,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648731031] [2020-12-23 06:11:40,393 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 06:11:40,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:11:40,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 06:11:40,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 06:11:40,395 INFO L87 Difference]: Start difference. First operand 28 states and 38 transitions. Second operand 4 states. [2020-12-23 06:11:40,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:11:40,494 INFO L93 Difference]: Finished difference Result 42 states and 53 transitions. [2020-12-23 06:11:40,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 06:11:40,496 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-12-23 06:11:40,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:11:40,501 INFO L225 Difference]: With dead ends: 42 [2020-12-23 06:11:40,502 INFO L226 Difference]: Without dead ends: 38 [2020-12-23 06:11:40,503 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 06:11:40,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-12-23 06:11:40,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 28. [2020-12-23 06:11:40,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-23 06:11:40,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2020-12-23 06:11:40,519 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 13 [2020-12-23 06:11:40,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:11:40,519 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2020-12-23 06:11:40,520 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 06:11:40,520 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2020-12-23 06:11:40,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 06:11:40,521 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:11:40,521 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:11:40,522 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 06:11:40,522 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:11:40,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:11:40,524 INFO L82 PathProgramCache]: Analyzing trace with hash -1959363189, now seen corresponding path program 1 times [2020-12-23 06:11:40,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:11:40,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964784783] [2020-12-23 06:11:40,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:11:40,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:11:40,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:11:40,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964784783] [2020-12-23 06:11:40,628 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:11:40,628 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 06:11:40,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105019032] [2020-12-23 06:11:40,629 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 06:11:40,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:11:40,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 06:11:40,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 06:11:40,634 INFO L87 Difference]: Start difference. First operand 28 states and 38 transitions. Second operand 4 states. [2020-12-23 06:11:40,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:11:40,706 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2020-12-23 06:11:40,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 06:11:40,707 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-12-23 06:11:40,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:11:40,708 INFO L225 Difference]: With dead ends: 44 [2020-12-23 06:11:40,708 INFO L226 Difference]: Without dead ends: 40 [2020-12-23 06:11:40,709 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 06:11:40,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-12-23 06:11:40,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 28. [2020-12-23 06:11:40,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-23 06:11:40,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2020-12-23 06:11:40,724 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 14 [2020-12-23 06:11:40,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:11:40,726 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2020-12-23 06:11:40,726 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 06:11:40,726 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2020-12-23 06:11:40,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-23 06:11:40,727 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:11:40,728 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:11:40,728 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 06:11:40,728 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:11:40,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:11:40,729 INFO L82 PathProgramCache]: Analyzing trace with hash 1045511114, now seen corresponding path program 1 times [2020-12-23 06:11:40,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:11:40,730 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094208058] [2020-12-23 06:11:40,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:11:40,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:11:40,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:11:40,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094208058] [2020-12-23 06:11:40,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:11:40,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 06:11:40,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489237581] [2020-12-23 06:11:40,846 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 06:11:40,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:11:40,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 06:11:40,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 06:11:40,849 INFO L87 Difference]: Start difference. First operand 28 states and 38 transitions. Second operand 4 states. [2020-12-23 06:11:40,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:11:40,929 INFO L93 Difference]: Finished difference Result 42 states and 53 transitions. [2020-12-23 06:11:40,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 06:11:40,930 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-12-23 06:11:40,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:11:40,931 INFO L225 Difference]: With dead ends: 42 [2020-12-23 06:11:40,931 INFO L226 Difference]: Without dead ends: 38 [2020-12-23 06:11:40,933 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 06:11:40,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-12-23 06:11:40,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 28. [2020-12-23 06:11:40,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-23 06:11:40,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2020-12-23 06:11:40,945 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 15 [2020-12-23 06:11:40,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:11:40,945 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2020-12-23 06:11:40,946 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 06:11:40,946 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2020-12-23 06:11:40,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-23 06:11:40,947 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:11:40,947 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:11:40,948 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 06:11:40,948 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:11:40,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:11:40,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1102769416, now seen corresponding path program 1 times [2020-12-23 06:11:40,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:11:40,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195772104] [2020-12-23 06:11:40,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:11:41,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 06:11:41,024 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 06:11:41,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 06:11:41,072 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 06:11:41,121 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-23 06:11:41,122 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-23 06:11:41,123 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 06:11:41,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 06:11:41 BoogieIcfgContainer [2020-12-23 06:11:41,174 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 06:11:41,175 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 06:11:41,175 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 06:11:41,175 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 06:11:41,176 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 06:11:39" (3/4) ... [2020-12-23 06:11:41,180 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-23 06:11:41,180 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 06:11:41,183 INFO L168 Benchmark]: Toolchain (without parser) took 2605.68 ms. Allocated memory is still 151.0 MB. Free memory was 127.0 MB in the beginning and 59.5 MB in the end (delta: 67.5 MB). Peak memory consumption was 67.5 MB. Max. memory is 8.0 GB. [2020-12-23 06:11:41,184 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 123.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 06:11:41,185 INFO L168 Benchmark]: CACSL2BoogieTranslator took 295.85 ms. Allocated memory is still 151.0 MB. Free memory was 126.7 MB in the beginning and 116.4 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-23 06:11:41,186 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.95 ms. Allocated memory is still 151.0 MB. Free memory was 116.3 MB in the beginning and 114.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 06:11:41,187 INFO L168 Benchmark]: Boogie Preprocessor took 36.96 ms. Allocated memory is still 151.0 MB. Free memory was 114.5 MB in the beginning and 113.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 06:11:41,187 INFO L168 Benchmark]: RCFGBuilder took 673.17 ms. Allocated memory is still 151.0 MB. Free memory was 113.1 MB in the beginning and 126.6 MB in the end (delta: -13.5 MB). Peak memory consumption was 14.0 MB. Max. memory is 8.0 GB. [2020-12-23 06:11:41,188 INFO L168 Benchmark]: TraceAbstraction took 1537.22 ms. Allocated memory is still 151.0 MB. Free memory was 126.1 MB in the beginning and 59.5 MB in the end (delta: 66.6 MB). Peak memory consumption was 66.1 MB. Max. memory is 8.0 GB. [2020-12-23 06:11:41,189 INFO L168 Benchmark]: Witness Printer took 5.44 ms. Allocated memory is still 151.0 MB. Free memory is still 59.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 06:11:41,193 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 123.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 295.85 ms. Allocated memory is still 151.0 MB. Free memory was 126.7 MB in the beginning and 116.4 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 44.95 ms. Allocated memory is still 151.0 MB. Free memory was 116.3 MB in the beginning and 114.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 36.96 ms. Allocated memory is still 151.0 MB. Free memory was 114.5 MB in the beginning and 113.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 673.17 ms. Allocated memory is still 151.0 MB. Free memory was 113.1 MB in the beginning and 126.6 MB in the end (delta: -13.5 MB). Peak memory consumption was 14.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1537.22 ms. Allocated memory is still 151.0 MB. Free memory was 126.1 MB in the beginning and 59.5 MB in the end (delta: 66.6 MB). Peak memory consumption was 66.1 MB. Max. memory is 8.0 GB. * Witness Printer took 5.44 ms. Allocated memory is still 151.0 MB. Free memory is still 59.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 70]: 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 69, overapproximation of someBinaryArithmeticDOUBLEoperation at line 63. Possible FailurePath: [L62] double x = __VERIFIER_nondet_double(); [L63] double y = 0.0 / 0.0; [L18] return x != x; [L64] COND TRUE !isnan_double(x) [L20] __uint32_t msw, lsw; [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (msw) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (lsw) = ew_u.parts.lsw [L29-L30] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L32-L33] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L35-L36] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L39-L40] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L43] return 0; [L47] COND TRUE __fpclassify_double(x) == 0 [L48] return y; [L66] double res = fmin_double(x, y); [L69] COND TRUE res != x [L70] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.3s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 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, 0.2s 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...