/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_0730c.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 16:17:26,802 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 16:17:26,804 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 16:17:26,828 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 16:17:26,829 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 16:17:26,836 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 16:17:26,838 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 16:17:26,840 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 16:17:26,843 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 16:17:26,844 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 16:17:26,844 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 16:17:26,847 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 16:17:26,847 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 16:17:26,850 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 16:17:26,851 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 16:17:26,853 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 16:17:26,855 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 16:17:26,857 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 16:17:26,859 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 16:17:26,864 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 16:17:26,867 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 16:17:26,869 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 16:17:26,870 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 16:17:26,871 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 16:17:26,881 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 16:17:26,893 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 16:17:26,894 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 16:17:26,895 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 16:17:26,897 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-22 16:17:26,935 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 16:17:26,936 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 16:17:26,937 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 16:17:26,937 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 16:17:26,937 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 16:17:26,937 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 16:17:26,938 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 16:17:26,938 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 16:17:26,938 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 16:17:26,938 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 16:17:26,938 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 16:17:26,939 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 16:17:26,939 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 16:17:26,939 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 16:17:26,939 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 16:17:26,939 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 16:17:26,940 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 16:17:26,940 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 16:17:26,940 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 16:17:26,940 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 16:17:26,940 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 16:17:26,941 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 16:17:26,941 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 16:17:26,941 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 16:17:26,941 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 16:17:26,941 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 16:17:26,942 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 16:17:26,942 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 16:17:26,942 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 16:17:26,942 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-22 16:17:27,210 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 16:17:27,222 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 16:17:27,226 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 16:17:27,227 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 16:17:27,227 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 16:17:27,228 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0730c.c [2020-08-22 16:17:27,290 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d98fb5edf/078683179d00479488127ad8a66af35a/FLAG4b1fc9e2b [2020-08-22 16:17:27,752 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 16:17:27,752 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_0730c.c [2020-08-22 16:17:27,759 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d98fb5edf/078683179d00479488127ad8a66af35a/FLAG4b1fc9e2b [2020-08-22 16:17:28,162 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d98fb5edf/078683179d00479488127ad8a66af35a [2020-08-22 16:17:28,172 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 16:17:28,174 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 16:17:28,175 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 16:17:28,175 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 16:17:28,180 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 16:17:28,181 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:17:28" (1/1) ... [2020-08-22 16:17:28,184 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b0a7f0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:28, skipping insertion in model container [2020-08-22 16:17:28,185 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:17:28" (1/1) ... [2020-08-22 16:17:28,193 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 16:17:28,219 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 16:17:28,449 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:17:28,452 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 16:17:28,484 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:17:28,603 INFO L208 MainTranslator]: Completed translation [2020-08-22 16:17:28,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:28 WrapperNode [2020-08-22 16:17:28,603 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 16:17:28,604 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 16:17:28,604 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 16:17:28,604 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 16:17:28,616 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:28" (1/1) ... [2020-08-22 16:17:28,617 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:28" (1/1) ... [2020-08-22 16:17:28,626 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:28" (1/1) ... [2020-08-22 16:17:28,626 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:28" (1/1) ... [2020-08-22 16:17:28,638 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:28" (1/1) ... [2020-08-22 16:17:28,645 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:28" (1/1) ... [2020-08-22 16:17:28,650 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:28" (1/1) ... [2020-08-22 16:17:28,653 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 16:17:28,654 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 16:17:28,654 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 16:17:28,654 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 16:17:28,655 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:28" (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 [2020-08-22 16:17:28,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 16:17:28,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 16:17:28,717 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf [2020-08-22 16:17:28,717 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-08-22 16:17:28,717 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 16:17:28,717 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 16:17:28,718 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-08-22 16:17:28,718 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf [2020-08-22 16:17:28,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 16:17:28,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-22 16:17:28,719 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 16:17:28,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 16:17:28,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 16:17:28,720 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-22 16:17:28,721 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-08-22 16:17:28,721 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 16:17:28,722 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 16:17:28,722 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 16:17:29,099 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 16:17:29,099 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-08-22 16:17:29,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:17:29 BoogieIcfgContainer [2020-08-22 16:17:29,103 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 16:17:29,105 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 16:17:29,105 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 16:17:29,108 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 16:17:29,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:17:28" (1/3) ... [2020-08-22 16:17:29,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@134f3077 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:17:29, skipping insertion in model container [2020-08-22 16:17:29,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:28" (2/3) ... [2020-08-22 16:17:29,110 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@134f3077 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:17:29, skipping insertion in model container [2020-08-22 16:17:29,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:17:29" (3/3) ... [2020-08-22 16:17:29,112 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_0730c.c [2020-08-22 16:17:29,122 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-08-22 16:17:29,130 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 16:17:29,142 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 16:17:29,162 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 16:17:29,162 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 16:17:29,162 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-08-22 16:17:29,163 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 16:17:29,163 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 16:17:29,163 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 16:17:29,163 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 16:17:29,163 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 16:17:29,183 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2020-08-22 16:17:29,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-22 16:17:29,189 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:17:29,190 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:17:29,190 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:17:29,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:17:29,195 INFO L82 PathProgramCache]: Analyzing trace with hash 380065484, now seen corresponding path program 1 times [2020-08-22 16:17:29,202 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:17:29,203 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687952235] [2020-08-22 16:17:29,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:17:29,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:17:29,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:17:29,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:17:29,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 16:17:29,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:17:29,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:17:29,428 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687952235] [2020-08-22 16:17:29,429 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:17:29,430 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 16:17:29,430 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495905890] [2020-08-22 16:17:29,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 16:17:29,436 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:17:29,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 16:17:29,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 16:17:29,452 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 4 states. [2020-08-22 16:17:29,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:17:29,703 INFO L93 Difference]: Finished difference Result 92 states and 133 transitions. [2020-08-22 16:17:29,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 16:17:29,704 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-08-22 16:17:29,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:17:29,716 INFO L225 Difference]: With dead ends: 92 [2020-08-22 16:17:29,718 INFO L226 Difference]: Without dead ends: 46 [2020-08-22 16:17:29,722 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 16:17:29,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-08-22 16:17:29,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-08-22 16:17:29,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-08-22 16:17:29,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 57 transitions. [2020-08-22 16:17:29,797 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 57 transitions. Word has length 17 [2020-08-22 16:17:29,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:17:29,799 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 57 transitions. [2020-08-22 16:17:29,799 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 16:17:29,799 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 57 transitions. [2020-08-22 16:17:29,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-22 16:17:29,802 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:17:29,802 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:17:29,805 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 16:17:29,806 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:17:29,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:17:29,807 INFO L82 PathProgramCache]: Analyzing trace with hash 2048303218, now seen corresponding path program 1 times [2020-08-22 16:17:29,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:17:29,808 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692787612] [2020-08-22 16:17:29,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:17:29,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 16:17:29,871 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 16:17:29,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 16:17:29,901 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 16:17:29,929 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-08-22 16:17:29,929 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 16:17:29,931 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 16:17:29,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 04:17:29 BoogieIcfgContainer [2020-08-22 16:17:29,962 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 16:17:29,964 INFO L168 Benchmark]: Toolchain (without parser) took 1789.95 ms. Allocated memory was 142.1 MB in the beginning and 205.0 MB in the end (delta: 62.9 MB). Free memory was 103.7 MB in the beginning and 106.5 MB in the end (delta: -2.8 MB). Peak memory consumption was 60.1 MB. Max. memory is 7.1 GB. [2020-08-22 16:17:29,965 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 142.1 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-22 16:17:29,967 INFO L168 Benchmark]: CACSL2BoogieTranslator took 428.52 ms. Allocated memory was 142.1 MB in the beginning and 205.0 MB in the end (delta: 62.9 MB). Free memory was 103.5 MB in the beginning and 182.8 MB in the end (delta: -79.3 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. [2020-08-22 16:17:29,967 INFO L168 Benchmark]: Boogie Preprocessor took 49.18 ms. Allocated memory is still 205.0 MB. Free memory was 182.8 MB in the beginning and 180.5 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-08-22 16:17:29,968 INFO L168 Benchmark]: RCFGBuilder took 450.06 ms. Allocated memory is still 205.0 MB. Free memory was 180.5 MB in the beginning and 158.0 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-08-22 16:17:29,969 INFO L168 Benchmark]: TraceAbstraction took 857.27 ms. Allocated memory is still 205.0 MB. Free memory was 157.4 MB in the beginning and 106.5 MB in the end (delta: 50.9 MB). Peak memory consumption was 50.9 MB. Max. memory is 7.1 GB. [2020-08-22 16:17:29,974 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 142.1 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 428.52 ms. Allocated memory was 142.1 MB in the beginning and 205.0 MB in the end (delta: 62.9 MB). Free memory was 103.5 MB in the beginning and 182.8 MB in the end (delta: -79.3 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 49.18 ms. Allocated memory is still 205.0 MB. Free memory was 182.8 MB in the beginning and 180.5 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 450.06 ms. Allocated memory is still 205.0 MB. Free memory was 180.5 MB in the beginning and 158.0 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 857.27 ms. Allocated memory is still 205.0 MB. Free memory was 157.4 MB in the beginning and 106.5 MB in the end (delta: 50.9 MB). Peak memory consumption was 50.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 106]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 105, overapproximation of bitwiseAnd at line 24, overapproximation of someUnaryFLOAToperation at line 101, overapproximation of someBinaryArithmeticFLOAToperation at line 27. Possible FailurePath: [L12] static const float one_sqrt = 1.0, tiny_sqrt = 1.0e-30; VAL [\old(one_sqrt)=4294967301, \old(tiny_sqrt)=4294967299, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L101] float x = -0.0f; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L102] CALL, EXPR __ieee754_sqrtf(x) VAL [\old(x)=4294967300, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L15] float z; [L16] __uint32_t r, hx; [L17] __int32_t ix, s, q, m, t, i; VAL [\old(x)=4294967300, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=4294967300] [L20] ieee_float_shape_type gf_u; [L21] gf_u.value = (x) [L22] EXPR gf_u.word [L22] (ix) = gf_u.word [L24] hx = ix & 0x7fffffff VAL [\old(x)=4294967300, ix=-1, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=4294967300] [L26] COND TRUE !((hx) < 0x7f800000L) [L27] return x * x + x; VAL [\old(x)=4294967300, hx=2139095040, ix=-1, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=4294967300] [L102] RET, EXPR __ieee754_sqrtf(x) VAL [__ieee754_sqrtf(x)=4294967297, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=4294967300] [L102] float res = __ieee754_sqrtf(x); [L105] EXPR res == -0.0f && __signbit_float(res) == 1 VAL [one_sqrt=1, res=4294967297, res == -0.0f && __signbit_float(res) == 1=0, tiny_sqrt=1/1000000000000000000000000000000, x=4294967300] [L105] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L106] __VERIFIER_error() VAL [one_sqrt=1, res=4294967297, tiny_sqrt=1/1000000000000000000000000000000, x=4294967300] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 50 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 55 SDtfs, 50 SDslu, 5 SDs, 0 SdLazy, 60 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 688 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...