/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_1230.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 06:11:36,602 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 06:11:36,606 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 06:11:36,664 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 06:11:36,665 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 06:11:36,669 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 06:11:36,673 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 06:11:36,679 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 06:11:36,683 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 06:11:36,690 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 06:11:36,694 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 06:11:36,696 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 06:11:36,696 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 06:11:36,699 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 06:11:36,702 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 06:11:36,704 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 06:11:36,706 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 06:11:36,709 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 06:11:36,727 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 06:11:36,735 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 06:11:36,737 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 06:11:36,739 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 06:11:36,742 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 06:11:36,744 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 06:11:36,753 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 06:11:36,758 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 06:11:36,759 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 06:11:36,761 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 06:11:36,762 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 06:11:36,763 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 06:11:36,764 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 06:11:36,764 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 06:11:36,771 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 06:11:36,771 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 06:11:36,773 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 06:11:36,773 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 06:11:36,775 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 06:11:36,823 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 06:11:36,823 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 06:11:36,828 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 06:11:36,828 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 06:11:36,828 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 06:11:36,828 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 06:11:36,829 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 06:11:36,829 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 06:11:36,829 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 06:11:36,829 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 06:11:36,830 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 06:11:36,831 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 06:11:36,831 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 06:11:36,831 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 06:11:36,832 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 06:11:36,832 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 06:11:36,832 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 06:11:36,832 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 06:11:36,833 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 06:11:36,833 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 06:11:36,833 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 06:11:36,833 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 06:11:36,833 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 06:11:36,833 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 06:11:36,834 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 06:11:36,834 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 06:11:37,321 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 06:11:37,362 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 06:11:37,366 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 06:11:37,367 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 06:11:37,368 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 06:11:37,369 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1230.c [2020-12-23 06:11:37,461 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/3b8932147/916846674d3240edaa732568f7692aa0/FLAG0effe7bfc [2020-12-23 06:11:38,136 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 06:11:38,136 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1230.c [2020-12-23 06:11:38,144 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/3b8932147/916846674d3240edaa732568f7692aa0/FLAG0effe7bfc [2020-12-23 06:11:38,499 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/3b8932147/916846674d3240edaa732568f7692aa0 [2020-12-23 06:11:38,503 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 06:11:38,506 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 06:11:38,511 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 06:11:38,512 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 06:11:38,516 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 06:11:38,517 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 06:11:38" (1/1) ... [2020-12-23 06:11:38,520 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f88ed4b 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 06:11:38,520 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 06:11:38" (1/1) ... [2020-12-23 06:11:38,533 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 06:11:38,553 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 06:11:38,712 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_1230.c[1667,1680] [2020-12-23 06:11:38,716 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 06:11:38,725 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 06:11:38,753 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_1230.c[1667,1680] [2020-12-23 06:11:38,754 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 06:11:38,771 INFO L208 MainTranslator]: Completed translation [2020-12-23 06:11:38,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:11:38 WrapperNode [2020-12-23 06:11:38,772 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 06:11:38,773 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 06:11:38,773 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 06:11:38,773 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 06:11:38,782 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 06:11:38,792 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 06:11:38,817 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 06:11:38,818 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 06:11:38,819 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 06:11:38,819 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 06:11:38,827 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 06:11:38,828 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 06:11:38,831 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 06:11:38,831 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 06:11:38,838 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 06:11:38,842 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 06:11:38,847 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 06:11:38,850 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 06:11:38,851 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 06:11:38,851 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 06:11:38,851 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 06:11:38,852 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 06:11:38,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 06:11:38,956 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 06:11:38,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-12-23 06:11:38,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 06:11:38,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 06:11:38,957 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-23 06:11:38,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-23 06:11:39,424 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 06:11:39,425 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2020-12-23 06:11:39,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 06:11:39 BoogieIcfgContainer [2020-12-23 06:11:39,427 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 06:11:39,429 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 06:11:39,429 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 06:11:39,433 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 06:11:39,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 06:11:38" (1/3) ... [2020-12-23 06:11:39,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cfd028f 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 06:11:39,435 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 06:11:39,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cfd028f 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 06:11:39,436 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 06:11:39,437 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1230.c [2020-12-23 06:11:39,446 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 06:11:39,452 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 06:11:39,485 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 06:11:39,547 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 06:11:39,547 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 06:11:39,548 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 06:11:39,548 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 06:11:39,548 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 06:11:39,548 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 06:11:39,548 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 06:11:39,549 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 06:11:39,572 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-12-23 06:11:39,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-23 06:11:39,578 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:11:39,579 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:11:39,580 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:11:39,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:11:39,589 INFO L82 PathProgramCache]: Analyzing trace with hash -958093107, now seen corresponding path program 1 times [2020-12-23 06:11:39,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:11:39,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413114088] [2020-12-23 06:11:39,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:11:39,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:11:39,831 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 06:11:39,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413114088] [2020-12-23 06:11:39,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:11:39,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 06:11:39,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091466171] [2020-12-23 06:11:39,847 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 06:11:39,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:11:39,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 06:11:39,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 06:11:39,875 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2020-12-23 06:11:39,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:11:39,902 INFO L93 Difference]: Finished difference Result 54 states and 84 transitions. [2020-12-23 06:11:39,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 06:11:39,904 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-12-23 06:11:39,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:11:39,933 INFO L225 Difference]: With dead ends: 54 [2020-12-23 06:11:39,934 INFO L226 Difference]: Without dead ends: 25 [2020-12-23 06:11:39,938 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 06:11:39,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-12-23 06:11:39,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-12-23 06:11:39,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-12-23 06:11:39,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 35 transitions. [2020-12-23 06:11:39,989 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 35 transitions. Word has length 10 [2020-12-23 06:11:39,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:11:39,989 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 35 transitions. [2020-12-23 06:11:39,990 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 06:11:39,990 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2020-12-23 06:11:39,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 06:11:39,992 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:11:39,992 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:11:39,993 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 06:11:39,994 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:11:39,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:11:39,998 INFO L82 PathProgramCache]: Analyzing trace with hash 1001566992, now seen corresponding path program 1 times [2020-12-23 06:11:39,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:11:39,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434996452] [2020-12-23 06:11:39,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:11:40,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:11:40,144 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 06:11:40,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434996452] [2020-12-23 06:11:40,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:11:40,145 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 06:11:40,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493328393] [2020-12-23 06:11:40,147 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 06:11:40,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:11:40,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 06:11:40,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 06:11:40,149 INFO L87 Difference]: Start difference. First operand 25 states and 35 transitions. Second operand 4 states. [2020-12-23 06:11:40,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:11:40,251 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2020-12-23 06:11:40,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 06:11:40,253 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-23 06:11:40,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:11:40,254 INFO L225 Difference]: With dead ends: 41 [2020-12-23 06:11:40,254 INFO L226 Difference]: Without dead ends: 36 [2020-12-23 06:11:40,255 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 06:11:40,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-12-23 06:11:40,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 27. [2020-12-23 06:11:40,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-12-23 06:11:40,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2020-12-23 06:11:40,263 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 11 [2020-12-23 06:11:40,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:11:40,263 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2020-12-23 06:11:40,263 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 06:11:40,263 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2020-12-23 06:11:40,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-23 06:11:40,264 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:11:40,265 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:11:40,265 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 06:11:40,265 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:11:40,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:11:40,266 INFO L82 PathProgramCache]: Analyzing trace with hash 502183504, now seen corresponding path program 1 times [2020-12-23 06:11:40,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:11:40,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949779613] [2020-12-23 06:11:40,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:11:40,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:11:40,373 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 06:11:40,374 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949779613] [2020-12-23 06:11:40,377 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:11:40,377 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 06:11:40,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127975602] [2020-12-23 06:11:40,378 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 06:11:40,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:11:40,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 06:11:40,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 06:11:40,383 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 4 states. [2020-12-23 06:11:40,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:11:40,462 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2020-12-23 06:11:40,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 06:11:40,463 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-12-23 06:11:40,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:11:40,464 INFO L225 Difference]: With dead ends: 43 [2020-12-23 06:11:40,465 INFO L226 Difference]: Without dead ends: 38 [2020-12-23 06:11:40,465 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 06:11:40,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-12-23 06:11:40,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 27. [2020-12-23 06:11:40,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-12-23 06:11:40,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2020-12-23 06:11:40,471 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 12 [2020-12-23 06:11:40,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:11:40,472 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2020-12-23 06:11:40,472 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 06:11:40,472 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2020-12-23 06:11:40,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-23 06:11:40,473 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:11:40,473 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:11:40,473 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 06:11:40,473 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:11:40,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:11:40,474 INFO L82 PathProgramCache]: Analyzing trace with hash -1951251627, now seen corresponding path program 1 times [2020-12-23 06:11:40,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:11:40,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99336540] [2020-12-23 06:11:40,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:11:40,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:11:40,544 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 06:11:40,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99336540] [2020-12-23 06:11:40,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:11:40,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 06:11:40,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125655673] [2020-12-23 06:11:40,546 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 06:11:40,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:11:40,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 06:11:40,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 06:11:40,547 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 4 states. [2020-12-23 06:11:40,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:11:40,634 INFO L93 Difference]: Finished difference Result 45 states and 56 transitions. [2020-12-23 06:11:40,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 06:11:40,640 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-12-23 06:11:40,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:11:40,641 INFO L225 Difference]: With dead ends: 45 [2020-12-23 06:11:40,641 INFO L226 Difference]: Without dead ends: 40 [2020-12-23 06:11:40,642 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 06:11:40,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-12-23 06:11:40,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 27. [2020-12-23 06:11:40,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-12-23 06:11:40,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2020-12-23 06:11:40,656 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 13 [2020-12-23 06:11:40,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:11:40,657 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2020-12-23 06:11:40,657 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 06:11:40,657 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2020-12-23 06:11:40,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 06:11:40,662 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:11:40,662 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:11:40,662 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 06:11:40,662 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:11:40,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:11:40,663 INFO L82 PathProgramCache]: Analyzing trace with hash -555778251, now seen corresponding path program 1 times [2020-12-23 06:11:40,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:11:40,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77921813] [2020-12-23 06:11:40,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:11:40,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:11:40,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:11:40,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77921813] [2020-12-23 06:11:40,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:11:40,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 06:11:40,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172262467] [2020-12-23 06:11:40,771 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 06:11:40,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:11:40,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 06:11:40,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 06:11:40,773 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 4 states. [2020-12-23 06:11:40,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:11:40,875 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2020-12-23 06:11:40,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 06:11:40,876 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-12-23 06:11:40,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:11:40,878 INFO L225 Difference]: With dead ends: 43 [2020-12-23 06:11:40,878 INFO L226 Difference]: Without dead ends: 38 [2020-12-23 06:11:40,879 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 06:11:40,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-12-23 06:11:40,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 27. [2020-12-23 06:11:40,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-12-23 06:11:40,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2020-12-23 06:11:40,885 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 14 [2020-12-23 06:11:40,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:11:40,885 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2020-12-23 06:11:40,885 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 06:11:40,886 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2020-12-23 06:11:40,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 06:11:40,886 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:11:40,887 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:11:40,887 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 06:11:40,887 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:11:40,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:11:40,888 INFO L82 PathProgramCache]: Analyzing trace with hash 1219229111, now seen corresponding path program 1 times [2020-12-23 06:11:40,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:11:40,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343248143] [2020-12-23 06:11:40,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:11:40,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 06:11:40,919 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 06:11:40,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 06:11:40,948 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 06:11:40,977 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-23 06:11:40,977 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-23 06:11:40,987 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 06:11:41,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 06:11:41 BoogieIcfgContainer [2020-12-23 06:11:41,023 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 06:11:41,023 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 06:11:41,023 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 06:11:41,024 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 06:11:41,024 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 06:11:41,029 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-23 06:11:41,029 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 06:11:41,032 INFO L168 Benchmark]: Toolchain (without parser) took 2525.58 ms. Allocated memory is still 151.0 MB. Free memory was 125.8 MB in the beginning and 61.7 MB in the end (delta: 64.1 MB). Peak memory consumption was 64.3 MB. Max. memory is 8.0 GB. [2020-12-23 06:11:41,033 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory is still 123.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 06:11:41,034 INFO L168 Benchmark]: CACSL2BoogieTranslator took 260.78 ms. Allocated memory is still 151.0 MB. Free memory was 125.6 MB in the beginning and 115.4 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-23 06:11:41,035 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.69 ms. Allocated memory is still 151.0 MB. Free memory was 115.2 MB in the beginning and 113.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 06:11:41,035 INFO L168 Benchmark]: Boogie Preprocessor took 31.69 ms. Allocated memory is still 151.0 MB. Free memory was 113.6 MB in the beginning and 112.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 06:11:41,036 INFO L168 Benchmark]: RCFGBuilder took 576.54 ms. Allocated memory is still 151.0 MB. Free memory was 112.1 MB in the beginning and 128.3 MB in the end (delta: -16.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 8.0 GB. [2020-12-23 06:11:41,037 INFO L168 Benchmark]: TraceAbstraction took 1593.75 ms. Allocated memory is still 151.0 MB. Free memory was 127.8 MB in the beginning and 62.2 MB in the end (delta: 65.5 MB). Peak memory consumption was 65.0 MB. Max. memory is 8.0 GB. [2020-12-23 06:11:41,038 INFO L168 Benchmark]: Witness Printer took 5.94 ms. Allocated memory is still 151.0 MB. Free memory was 62.2 MB in the beginning and 61.7 MB in the end (delta: 526.3 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 06:11:41,043 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory is still 123.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 260.78 ms. Allocated memory is still 151.0 MB. Free memory was 125.6 MB in the beginning and 115.4 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 44.69 ms. Allocated memory is still 151.0 MB. Free memory was 115.2 MB in the beginning and 113.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 31.69 ms. Allocated memory is still 151.0 MB. Free memory was 113.6 MB in the beginning and 112.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 576.54 ms. Allocated memory is still 151.0 MB. Free memory was 112.1 MB in the beginning and 128.3 MB in the end (delta: -16.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1593.75 ms. Allocated memory is still 151.0 MB. Free memory was 127.8 MB in the beginning and 62.2 MB in the end (delta: 65.5 MB). Peak memory consumption was 65.0 MB. Max. memory is 8.0 GB. * Witness Printer took 5.94 ms. Allocated memory is still 151.0 MB. Free memory was 62.2 MB in the beginning and 61.7 MB in the end (delta: 526.3 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 68]: 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 18, overapproximation of someBinaryArithmeticDOUBLEoperation at line 63. Possible FailurePath: [L63] double x = 0.0 / 0.0; [L64] double y = 0.0 / 0.0; [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; [L65] double res = fmin_double(x, y); [L18] return x != x; [L67] COND TRUE !isnan_double(res) [L68] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.4s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 206 SDtfs, 44 SDslu, 238 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=28occurred 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, 44 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.3s 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...