/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/float-newlib/float_req_bl_1232a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 06:12:45,997 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 06:12:46,000 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 06:12:46,038 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 06:12:46,039 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 06:12:46,040 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 06:12:46,042 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 06:12:46,044 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 06:12:46,047 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 06:12:46,048 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 06:12:46,049 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 06:12:46,051 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 06:12:46,051 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 06:12:46,053 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 06:12:46,054 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 06:12:46,056 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 06:12:46,057 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 06:12:46,061 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 06:12:46,063 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 06:12:46,074 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 06:12:46,076 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 06:12:46,077 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 06:12:46,078 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 06:12:46,079 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 06:12:46,083 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 06:12:46,086 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 06:12:46,087 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 06:12:46,088 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 06:12:46,089 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 06:12:46,090 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 06:12:46,091 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 06:12:46,092 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 06:12:46,092 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 06:12:46,092 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 06:12:46,094 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 06:12:46,094 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 06:12:46,096 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 06:12:46,124 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 06:12:46,124 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 06:12:46,126 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 06:12:46,126 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 06:12:46,126 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 06:12:46,126 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 06:12:46,127 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 06:12:46,127 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 06:12:46,127 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 06:12:46,127 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 06:12:46,127 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 06:12:46,128 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 06:12:46,128 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 06:12:46,128 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 06:12:46,128 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 06:12:46,128 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 06:12:46,129 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 06:12:46,129 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 06:12:46,129 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 06:12:46,129 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 06:12:46,129 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 06:12:46,130 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 06:12:46,130 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 06:12:46,130 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 06:12:46,130 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 06:12:46,130 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 06:12:46,498 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 06:12:46,528 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 06:12:46,532 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 06:12:46,534 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 06:12:46,534 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 06:12:46,536 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1232a.c [2020-12-23 06:12:46,624 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/7877ecfa8/7981fb5360e04f5896e61c4837674c59/FLAG9a1e174f4 [2020-12-23 06:12:47,371 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 06:12:47,372 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1232a.c [2020-12-23 06:12:47,382 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/7877ecfa8/7981fb5360e04f5896e61c4837674c59/FLAG9a1e174f4 [2020-12-23 06:12:47,712 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/7877ecfa8/7981fb5360e04f5896e61c4837674c59 [2020-12-23 06:12:47,715 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 06:12:47,717 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 06:12:47,719 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 06:12:47,719 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 06:12:47,723 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 06:12:47,724 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 06:12:47" (1/1) ... [2020-12-23 06:12:47,725 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27cd7cc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:12:47, skipping insertion in model container [2020-12-23 06:12:47,726 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 06:12:47" (1/1) ... [2020-12-23 06:12:47,734 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 06:12:47,751 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: lhs: StructLHS[VariableLHS[~gf_u~0,],value] left hand side expression in assignment: lhs: VariableLHS[~w~0,] left hand side expression in assignment: lhs: StructLHS[VariableLHS[~gf_u~1,],value] left hand side expression in assignment: lhs: VariableLHS[~w~1,] [2020-12-23 06:12:47,938 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1232a.c[1656,1669] [2020-12-23 06:12:47,942 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 06:12:47,952 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#gf_u~0,],base],StructAccessExpression[IdentifierExpression[~#gf_u~0,],offset]]] left hand side expression in assignment: lhs: VariableLHS[~w~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#gf_u~1,],base],StructAccessExpression[IdentifierExpression[~#gf_u~1,],offset]]] left hand side expression in assignment: lhs: VariableLHS[~w~1,] [2020-12-23 06:12:47,980 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1232a.c[1656,1669] [2020-12-23 06:12:47,981 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 06:12:48,000 INFO L208 MainTranslator]: Completed translation [2020-12-23 06:12:48,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:12:48 WrapperNode [2020-12-23 06:12:48,001 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 06:12:48,002 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 06:12:48,003 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 06:12:48,003 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 06:12:48,011 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:12:48" (1/1) ... [2020-12-23 06:12:48,022 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:12:48" (1/1) ... [2020-12-23 06:12:48,050 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 06:12:48,051 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 06:12:48,051 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 06:12:48,051 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 06:12:48,062 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:12:48" (1/1) ... [2020-12-23 06:12:48,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:12:48" (1/1) ... [2020-12-23 06:12:48,065 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:12:48" (1/1) ... [2020-12-23 06:12:48,066 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:12:48" (1/1) ... [2020-12-23 06:12:48,074 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:12:48" (1/1) ... [2020-12-23 06:12:48,079 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:12:48" (1/1) ... [2020-12-23 06:12:48,081 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:12:48" (1/1) ... [2020-12-23 06:12:48,084 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 06:12:48,085 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 06:12:48,086 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 06:12:48,086 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 06:12:48,087 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:12:48" (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 06:12:48,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 06:12:48,208 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 06:12:48,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-12-23 06:12:48,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 06:12:48,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 06:12:48,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-23 06:12:48,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-23 06:12:48,696 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 06:12:48,696 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2020-12-23 06:12:48,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 06:12:48 BoogieIcfgContainer [2020-12-23 06:12:48,698 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 06:12:48,700 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 06:12:48,700 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 06:12:48,704 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 06:12:48,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 06:12:47" (1/3) ... [2020-12-23 06:12:48,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6784a2c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 06:12:48, skipping insertion in model container [2020-12-23 06:12:48,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:12:48" (2/3) ... [2020-12-23 06:12:48,706 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6784a2c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 06:12:48, skipping insertion in model container [2020-12-23 06:12:48,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 06:12:48" (3/3) ... [2020-12-23 06:12:48,708 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232a.c [2020-12-23 06:12:48,715 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 06:12:48,720 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 06:12:48,741 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 06:12:48,770 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 06:12:48,770 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 06:12:48,770 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 06:12:48,771 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 06:12:48,771 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 06:12:48,771 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 06:12:48,771 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 06:12:48,771 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 06:12:48,788 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-12-23 06:12:48,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-23 06:12:48,794 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:12:48,795 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:12:48,795 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:12:48,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:12:48,802 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2020-12-23 06:12:48,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:12:48,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72784538] [2020-12-23 06:12:48,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:12:48,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:12:48,980 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 06:12:48,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72784538] [2020-12-23 06:12:48,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:12:48,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 06:12:48,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979701746] [2020-12-23 06:12:48,988 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 06:12:48,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:12:49,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 06:12:49,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 06:12:49,008 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2020-12-23 06:12:49,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:12:49,030 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions. [2020-12-23 06:12:49,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 06:12:49,032 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-12-23 06:12:49,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:12:49,044 INFO L225 Difference]: With dead ends: 62 [2020-12-23 06:12:49,044 INFO L226 Difference]: Without dead ends: 29 [2020-12-23 06:12:49,047 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 06:12:49,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-12-23 06:12:49,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-12-23 06:12:49,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-12-23 06:12:49,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2020-12-23 06:12:49,088 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2020-12-23 06:12:49,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:12:49,089 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2020-12-23 06:12:49,089 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 06:12:49,089 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2020-12-23 06:12:49,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 06:12:49,090 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:12:49,090 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:12:49,090 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 06:12:49,091 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:12:49,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:12:49,092 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2020-12-23 06:12:49,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:12:49,092 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067865314] [2020-12-23 06:12:49,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:12:49,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:12:49,269 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 06:12:49,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067865314] [2020-12-23 06:12:49,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:12:49,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 06:12:49,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365216681] [2020-12-23 06:12:49,274 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 06:12:49,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:12:49,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 06:12:49,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 06:12:49,277 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 4 states. [2020-12-23 06:12:49,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:12:49,357 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2020-12-23 06:12:49,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 06:12:49,358 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-23 06:12:49,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:12:49,360 INFO L225 Difference]: With dead ends: 53 [2020-12-23 06:12:49,360 INFO L226 Difference]: Without dead ends: 44 [2020-12-23 06:12:49,361 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 06:12:49,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-12-23 06:12:49,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 31. [2020-12-23 06:12:49,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-23 06:12:49,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-12-23 06:12:49,368 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2020-12-23 06:12:49,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:12:49,369 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-12-23 06:12:49,369 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 06:12:49,369 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-12-23 06:12:49,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-23 06:12:49,370 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:12:49,370 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:12:49,371 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 06:12:49,371 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:12:49,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:12:49,372 INFO L82 PathProgramCache]: Analyzing trace with hash 502201410, now seen corresponding path program 1 times [2020-12-23 06:12:49,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:12:49,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470947142] [2020-12-23 06:12:49,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:12:49,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:12:49,426 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 06:12:49,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470947142] [2020-12-23 06:12:49,427 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:12:49,427 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 06:12:49,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544749750] [2020-12-23 06:12:49,428 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 06:12:49,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:12:49,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 06:12:49,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 06:12:49,429 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2020-12-23 06:12:49,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:12:49,490 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2020-12-23 06:12:49,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 06:12:49,491 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-12-23 06:12:49,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:12:49,493 INFO L225 Difference]: With dead ends: 55 [2020-12-23 06:12:49,493 INFO L226 Difference]: Without dead ends: 46 [2020-12-23 06:12:49,493 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 06:12:49,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-12-23 06:12:49,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 31. [2020-12-23 06:12:49,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-23 06:12:49,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-12-23 06:12:49,500 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 12 [2020-12-23 06:12:49,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:12:49,500 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-12-23 06:12:49,500 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 06:12:49,501 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-12-23 06:12:49,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-23 06:12:49,501 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:12:49,502 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:12:49,502 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 06:12:49,502 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:12:49,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:12:49,503 INFO L82 PathProgramCache]: Analyzing trace with hash -1951233721, now seen corresponding path program 1 times [2020-12-23 06:12:49,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:12:49,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327555226] [2020-12-23 06:12:49,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:12:49,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:12:49,550 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 06:12:49,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327555226] [2020-12-23 06:12:49,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:12:49,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 06:12:49,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119896793] [2020-12-23 06:12:49,552 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 06:12:49,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:12:49,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 06:12:49,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 06:12:49,553 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2020-12-23 06:12:49,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:12:49,619 INFO L93 Difference]: Finished difference Result 57 states and 71 transitions. [2020-12-23 06:12:49,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 06:12:49,620 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-12-23 06:12:49,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:12:49,621 INFO L225 Difference]: With dead ends: 57 [2020-12-23 06:12:49,621 INFO L226 Difference]: Without dead ends: 48 [2020-12-23 06:12:49,622 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 06:12:49,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-12-23 06:12:49,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 31. [2020-12-23 06:12:49,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-23 06:12:49,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-12-23 06:12:49,636 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 13 [2020-12-23 06:12:49,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:12:49,636 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-12-23 06:12:49,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 06:12:49,637 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-12-23 06:12:49,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 06:12:49,638 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:12:49,638 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:12:49,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 06:12:49,639 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:12:49,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:12:49,640 INFO L82 PathProgramCache]: Analyzing trace with hash -555760345, now seen corresponding path program 1 times [2020-12-23 06:12:49,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:12:49,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500937314] [2020-12-23 06:12:49,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:12:49,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:12:49,706 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 06:12:49,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500937314] [2020-12-23 06:12:49,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:12:49,707 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 06:12:49,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217823977] [2020-12-23 06:12:49,708 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 06:12:49,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:12:49,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 06:12:49,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 06:12:49,709 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2020-12-23 06:12:49,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:12:49,767 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2020-12-23 06:12:49,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 06:12:49,768 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-12-23 06:12:49,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:12:49,769 INFO L225 Difference]: With dead ends: 55 [2020-12-23 06:12:49,769 INFO L226 Difference]: Without dead ends: 46 [2020-12-23 06:12:49,770 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 06:12:49,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-12-23 06:12:49,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 31. [2020-12-23 06:12:49,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-23 06:12:49,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-12-23 06:12:49,781 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 14 [2020-12-23 06:12:49,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:12:49,781 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-12-23 06:12:49,782 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 06:12:49,782 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-12-23 06:12:49,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 06:12:49,789 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:12:49,789 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:12:49,789 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 06:12:49,789 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:12:49,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:12:49,793 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2020-12-23 06:12:49,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:12:49,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961447418] [2020-12-23 06:12:49,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:12:49,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 06:12:49,850 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 06:12:49,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 06:12:49,895 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 06:12:49,948 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-23 06:12:49,948 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-23 06:12:49,948 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 06:12:49,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 06:12:49 BoogieIcfgContainer [2020-12-23 06:12:49,984 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 06:12:49,984 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 06:12:49,985 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 06:12:49,985 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 06:12:49,985 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 06:12:48" (3/4) ... [2020-12-23 06:12:49,989 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-23 06:12:49,989 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 06:12:49,992 INFO L168 Benchmark]: Toolchain (without parser) took 2273.88 ms. Allocated memory is still 162.5 MB. Free memory was 137.3 MB in the beginning and 75.1 MB in the end (delta: 62.1 MB). Peak memory consumption was 62.1 MB. Max. memory is 8.0 GB. [2020-12-23 06:12:49,993 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 162.5 MB. Free memory is still 135.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 06:12:49,994 INFO L168 Benchmark]: CACSL2BoogieTranslator took 282.61 ms. Allocated memory is still 162.5 MB. Free memory was 137.1 MB in the beginning and 126.5 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-23 06:12:49,994 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.59 ms. Allocated memory is still 162.5 MB. Free memory was 126.5 MB in the beginning and 124.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 06:12:49,995 INFO L168 Benchmark]: Boogie Preprocessor took 34.00 ms. Allocated memory is still 162.5 MB. Free memory was 124.7 MB in the beginning and 123.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 06:12:49,996 INFO L168 Benchmark]: RCFGBuilder took 612.99 ms. Allocated memory is still 162.5 MB. Free memory was 123.2 MB in the beginning and 140.7 MB in the end (delta: -17.5 MB). Peak memory consumption was 18.1 MB. Max. memory is 8.0 GB. [2020-12-23 06:12:49,997 INFO L168 Benchmark]: TraceAbstraction took 1283.97 ms. Allocated memory is still 162.5 MB. Free memory was 140.2 MB in the beginning and 75.7 MB in the end (delta: 64.5 MB). Peak memory consumption was 65.0 MB. Max. memory is 8.0 GB. [2020-12-23 06:12:49,998 INFO L168 Benchmark]: Witness Printer took 5.00 ms. Allocated memory is still 162.5 MB. Free memory was 75.7 MB in the beginning and 75.1 MB in the end (delta: 522.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 06:12:50,002 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 162.5 MB. Free memory is still 135.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 282.61 ms. Allocated memory is still 162.5 MB. Free memory was 137.1 MB in the beginning and 126.5 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 47.59 ms. Allocated memory is still 162.5 MB. Free memory was 126.5 MB in the beginning and 124.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 34.00 ms. Allocated memory is still 162.5 MB. Free memory was 124.7 MB in the beginning and 123.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 612.99 ms. Allocated memory is still 162.5 MB. Free memory was 123.2 MB in the beginning and 140.7 MB in the end (delta: -17.5 MB). Peak memory consumption was 18.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1283.97 ms. Allocated memory is still 162.5 MB. Free memory was 140.2 MB in the beginning and 75.7 MB in the end (delta: 64.5 MB). Peak memory consumption was 65.0 MB. Max. memory is 8.0 GB. * Witness Printer took 5.00 ms. Allocated memory is still 162.5 MB. Free memory was 75.7 MB in the beginning and 75.1 MB in the end (delta: 522.2 kB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 72]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 71, overapproximation of someUnaryFLOAToperation at line 67. Possible FailurePath: [L66] float x = 0.0f; [L67] float y = -0.0f; [L15] __uint32_t w; [L18] ieee_float_shape_type gf_u; [L19] gf_u.value = (x) [L20] EXPR gf_u.word [L20] (w) = gf_u.word [L23] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L25-L26] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L28-L29] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L31] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L34] return 0; [L38] COND TRUE __fpclassify_float(x) == 0 [L39] return y; [L68] float res = fmin_float(x, y); [L71] EXPR res == -0.0f && __signbit_float(res) == 1 [L71] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L72] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.1s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 251 SDtfs, 64 SDslu, 298 SDs, 0 SdLazy, 84 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 60 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 74 NumberOfCodeBlocks, 74 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 55 ConstructedInterpolants, 0 QuantifiedInterpolants, 799 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...