/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_1012a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 03:45:59,689 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 03:45:59,692 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 03:45:59,726 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 03:45:59,727 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 03:45:59,729 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 03:45:59,730 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 03:45:59,733 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 03:45:59,735 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 03:45:59,737 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 03:45:59,738 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 03:45:59,740 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2020-12-22 03:45:59,788 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 03:45:59,790 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 03:45:59,791 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 03:45:59,793 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 03:45:59,828 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 03:45:59,828 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 03:45:59,831 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 03:45:59,832 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 03:45:59,834 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 03:45:59,834 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 03:45:59,834 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 03:45:59,835 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 03:45:59,835 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 03:45:59,835 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 03:45:59,836 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 03:45:59,836 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 03:45:59,836 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 03:45:59,836 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 03:45:59,837 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 03:45:59,838 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 03:45:59,838 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 03:45:59,839 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 03:45:59,839 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 03:45:59,840 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 03:45:59,840 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 03:45:59,840 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 03:45:59,841 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 03:45:59,841 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 03:45:59,842 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 03:45:59,842 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 03:46:00,266 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 03:46:00,309 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 03:46:00,312 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 03:46:00,314 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 03:46:00,314 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 03:46:00,315 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1012a.c [2020-12-22 03:46:00,402 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/663baabfc/1a1d5062384a43c29afae4bfebded464/FLAGacfe877dd [2020-12-22 03:46:01,027 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 03:46:01,028 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1012a.c [2020-12-22 03:46:01,036 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/663baabfc/1a1d5062384a43c29afae4bfebded464/FLAGacfe877dd [2020-12-22 03:46:01,394 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/663baabfc/1a1d5062384a43c29afae4bfebded464 [2020-12-22 03:46:01,397 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 03:46:01,400 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 03:46:01,403 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 03:46:01,404 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 03:46:01,408 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 03:46:01,409 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:46:01" (1/1) ... [2020-12-22 03:46:01,411 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b6c8e26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:01, skipping insertion in model container [2020-12-22 03:46:01,411 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:46:01" (1/1) ... [2020-12-22 03:46:01,421 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 03:46:01,441 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 03:46:01,645 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1012a.c[1638,1651] [2020-12-22 03:46:01,649 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 03:46:01,660 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 03:46:01,721 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1012a.c[1638,1651] [2020-12-22 03:46:01,730 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 03:46:01,755 INFO L208 MainTranslator]: Completed translation [2020-12-22 03:46:01,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:01 WrapperNode [2020-12-22 03:46:01,756 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 03:46:01,759 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 03:46:01,763 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 03:46:01,763 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 03:46:01,773 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:01" (1/1) ... [2020-12-22 03:46:01,797 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:01" (1/1) ... [2020-12-22 03:46:01,825 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 03:46:01,826 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 03:46:01,826 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 03:46:01,826 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 03:46:01,840 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:01" (1/1) ... [2020-12-22 03:46:01,840 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:01" (1/1) ... [2020-12-22 03:46:01,843 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:01" (1/1) ... [2020-12-22 03:46:01,843 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:01" (1/1) ... [2020-12-22 03:46:01,851 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:01" (1/1) ... [2020-12-22 03:46:01,856 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:01" (1/1) ... [2020-12-22 03:46:01,858 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:01" (1/1) ... [2020-12-22 03:46:01,861 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 03:46:01,862 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 03:46:01,862 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 03:46:01,862 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 03:46:01,863 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:01" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 03:46:01,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 03:46:01,996 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 03:46:01,996 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-12-22 03:46:01,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 03:46:01,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-12-22 03:46:01,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 03:46:01,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 03:46:01,999 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 03:46:01,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 03:46:02,516 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 03:46:02,517 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2020-12-22 03:46:02,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:46:02 BoogieIcfgContainer [2020-12-22 03:46:02,522 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 03:46:02,527 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 03:46:02,528 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 03:46:02,535 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 03:46:02,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 03:46:01" (1/3) ... [2020-12-22 03:46:02,539 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33f78aa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:46:02, skipping insertion in model container [2020-12-22 03:46:02,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:01" (2/3) ... [2020-12-22 03:46:02,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33f78aa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:46:02, skipping insertion in model container [2020-12-22 03:46:02,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:46:02" (3/3) ... [2020-12-22 03:46:02,545 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1012a.c [2020-12-22 03:46:02,560 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 03:46:02,574 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 03:46:02,601 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 03:46:02,635 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 03:46:02,635 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 03:46:02,635 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 03:46:02,635 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 03:46:02,636 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 03:46:02,636 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 03:46:02,636 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 03:46:02,636 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 03:46:02,650 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-12-22 03:46:02,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 03:46:02,656 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:46:02,657 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:46:02,657 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:46:02,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:46:02,664 INFO L82 PathProgramCache]: Analyzing trace with hash -969083750, now seen corresponding path program 1 times [2020-12-22 03:46:02,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:46:02,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889812822] [2020-12-22 03:46:02,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:46:02,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:46:02,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:46:02,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889812822] [2020-12-22 03:46:02,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:46:02,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 03:46:02,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928897823] [2020-12-22 03:46:02,855 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 03:46:02,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:46:02,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 03:46:02,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 03:46:02,875 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2020-12-22 03:46:02,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:46:02,897 INFO L93 Difference]: Finished difference Result 34 states and 46 transitions. [2020-12-22 03:46:02,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 03:46:02,899 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-12-22 03:46:02,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:46:02,909 INFO L225 Difference]: With dead ends: 34 [2020-12-22 03:46:02,910 INFO L226 Difference]: Without dead ends: 15 [2020-12-22 03:46:02,913 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 03:46:02,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-12-22 03:46:02,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-12-22 03:46:02,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-12-22 03:46:02,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2020-12-22 03:46:02,956 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 11 [2020-12-22 03:46:02,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:46:02,956 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2020-12-22 03:46:02,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 03:46:02,957 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2020-12-22 03:46:02,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-22 03:46:02,958 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:46:02,958 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:46:02,958 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 03:46:02,959 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:46:02,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:46:02,960 INFO L82 PathProgramCache]: Analyzing trace with hash 657368916, now seen corresponding path program 1 times [2020-12-22 03:46:02,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:46:02,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128679873] [2020-12-22 03:46:02,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:46:03,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 03:46:03,134 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 03:46:03,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 03:46:03,320 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 03:46:03,377 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-22 03:46:03,377 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 03:46:03,379 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 03:46:03,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 03:46:03 BoogieIcfgContainer [2020-12-22 03:46:03,428 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 03:46:03,429 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 03:46:03,429 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 03:46:03,429 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 03:46:03,430 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:46:02" (3/4) ... [2020-12-22 03:46:03,434 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-22 03:46:03,434 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 03:46:03,439 INFO L168 Benchmark]: Toolchain (without parser) took 2037.36 ms. Allocated memory is still 151.0 MB. Free memory was 125.6 MB in the beginning and 126.2 MB in the end (delta: -618.1 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 03:46:03,441 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 124.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 03:46:03,442 INFO L168 Benchmark]: CACSL2BoogieTranslator took 353.39 ms. Allocated memory is still 151.0 MB. Free memory was 125.3 MB in the beginning and 114.7 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:03,444 INFO L168 Benchmark]: Boogie Procedure Inliner took 66.13 ms. Allocated memory is still 151.0 MB. Free memory was 114.7 MB in the beginning and 113.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:03,445 INFO L168 Benchmark]: Boogie Preprocessor took 34.90 ms. Allocated memory is still 151.0 MB. Free memory was 113.0 MB in the beginning and 111.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:03,446 INFO L168 Benchmark]: RCFGBuilder took 660.77 ms. Allocated memory is still 151.0 MB. Free memory was 111.7 MB in the beginning and 95.2 MB in the end (delta: 16.5 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:03,447 INFO L168 Benchmark]: TraceAbstraction took 900.68 ms. Allocated memory is still 151.0 MB. Free memory was 94.9 MB in the beginning and 126.8 MB in the end (delta: -31.8 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 03:46:03,449 INFO L168 Benchmark]: Witness Printer took 5.82 ms. Allocated memory is still 151.0 MB. Free memory was 126.8 MB in the beginning and 126.2 MB in the end (delta: 526.3 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:03,466 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 151.0 MB. Free memory is still 124.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 353.39 ms. Allocated memory is still 151.0 MB. Free memory was 125.3 MB in the beginning and 114.7 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 66.13 ms. Allocated memory is still 151.0 MB. Free memory was 114.7 MB in the beginning and 113.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 34.90 ms. Allocated memory is still 151.0 MB. Free memory was 113.0 MB in the beginning and 111.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 660.77 ms. Allocated memory is still 151.0 MB. Free memory was 111.7 MB in the beginning and 95.2 MB in the end (delta: 16.5 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 900.68 ms. Allocated memory is still 151.0 MB. Free memory was 94.9 MB in the beginning and 126.8 MB in the end (delta: -31.8 MB). There was no memory consumed. Max. memory is 8.0 GB. * Witness Printer took 5.82 ms. Allocated memory is still 151.0 MB. Free memory was 126.8 MB in the beginning and 126.2 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: 75]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 41, overapproximation of someBinaryArithmeticDOUBLEoperation at line 70, overapproximation of bitwiseAnd at line 40. Possible FailurePath: [L70] double x = 1.0 / 0.0; [L47] __uint32_t high; [L49] ieee_double_shape_type gh_u; [L50] gh_u.value = (x) [L51] EXPR gh_u.parts.msw [L51] (high) = gh_u.parts.msw [L54] ieee_double_shape_type sh_u; [L55] sh_u.value = (x) [L56] sh_u.parts.msw = (high & 0x7fffffff) [L57] EXPR sh_u.value [L57] (x) = sh_u.value [L59] return x; [L71] double res = fabs_double(x); [L33] __int32_t hx, lx; [L35] ieee_double_shape_type ew_u; [L36] ew_u.value = (x) [L37] EXPR ew_u.parts.msw [L37] (hx) = ew_u.parts.msw [L38] EXPR ew_u.parts.lsw [L38] (lx) = ew_u.parts.lsw [L40] hx &= 0x7fffffff [L41] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L42] hx = 0x7ff00000 - hx [L43] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L74] COND TRUE !isinf_double(res) [L75] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 17 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 100 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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...