/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_1092a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 16:17:41,853 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 16:17:41,857 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 16:17:41,902 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 16:17:41,903 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 16:17:41,911 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 16:17:41,914 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 16:17:41,918 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 16:17:41,921 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 16:17:41,925 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 16:17:41,926 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 16:17:41,927 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 16:17:41,927 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 16:17:41,930 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 16:17:41,932 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 16:17:41,934 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 16:17:41,935 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 16:17:41,936 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 16:17:41,937 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 16:17:41,946 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 16:17:41,948 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 16:17:41,948 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 16:17:41,949 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 16:17:41,950 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 16:17:41,963 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 16:17:41,976 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 16:17:41,980 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 16:17:41,981 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 16:17:41,983 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 16:17:42,022 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 16:17:42,022 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 16:17:42,025 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 16:17:42,026 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 16:17:42,026 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 16:17:42,026 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 16:17:42,026 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 16:17:42,027 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 16:17:42,027 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 16:17:42,027 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 16:17:42,028 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 16:17:42,028 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 16:17:42,028 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 16:17:42,029 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 16:17:42,029 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 16:17:42,029 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 16:17:42,029 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 16:17:42,030 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 16:17:42,030 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 16:17:42,030 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 16:17:42,030 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 16:17:42,030 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 16:17:42,031 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 16:17:42,031 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 16:17:42,031 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 16:17:42,032 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 16:17:42,032 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 16:17:42,032 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 16:17:42,032 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 16:17:42,032 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-22 16:17:42,343 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 16:17:42,356 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 16:17:42,359 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 16:17:42,360 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 16:17:42,361 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 16:17:42,361 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1092a.c [2020-08-22 16:17:42,437 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/718b5dc9e/759c837e912d42378b3e67ea8a4b7196/FLAGcdd559fda [2020-08-22 16:17:42,869 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 16:17:42,870 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1092a.c [2020-08-22 16:17:42,878 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/718b5dc9e/759c837e912d42378b3e67ea8a4b7196/FLAGcdd559fda [2020-08-22 16:17:43,232 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/718b5dc9e/759c837e912d42378b3e67ea8a4b7196 [2020-08-22 16:17:43,240 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 16:17:43,242 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 16:17:43,243 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 16:17:43,243 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 16:17:43,246 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 16:17:43,247 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:17:43" (1/1) ... [2020-08-22 16:17:43,250 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e3cba46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:43, skipping insertion in model container [2020-08-22 16:17:43,250 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:17:43" (1/1) ... [2020-08-22 16:17:43,258 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 16:17:43,273 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 16:17:43,453 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:17:43,457 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 16:17:43,487 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:17:43,610 INFO L208 MainTranslator]: Completed translation [2020-08-22 16:17:43,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:43 WrapperNode [2020-08-22 16:17:43,611 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 16:17:43,611 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 16:17:43,611 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 16:17:43,612 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 16:17:43,625 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:43" (1/1) ... [2020-08-22 16:17:43,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:43" (1/1) ... [2020-08-22 16:17:43,651 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:43" (1/1) ... [2020-08-22 16:17:43,651 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:43" (1/1) ... [2020-08-22 16:17:43,674 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:43" (1/1) ... [2020-08-22 16:17:43,683 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:43" (1/1) ... [2020-08-22 16:17:43,686 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:43" (1/1) ... [2020-08-22 16:17:43,691 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 16:17:43,691 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 16:17:43,692 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 16:17:43,692 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 16:17:43,693 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:43" (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 16:17:43,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 16:17:43,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 16:17:43,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_float [2020-08-22 16:17:43,744 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-08-22 16:17:43,744 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 16:17:43,744 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 16:17:43,744 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_float [2020-08-22 16:17:43,744 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 16:17:43,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-22 16:17:43,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 16:17:43,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 16:17:43,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 16:17:43,745 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-22 16:17:43,745 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-08-22 16:17:43,745 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 16:17:43,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 16:17:43,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 16:17:44,102 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 16:17:44,103 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-08-22 16:17:44,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:17:44 BoogieIcfgContainer [2020-08-22 16:17:44,106 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 16:17:44,108 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 16:17:44,108 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 16:17:44,113 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 16:17:44,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:17:43" (1/3) ... [2020-08-22 16:17:44,114 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60dff0bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:17:44, skipping insertion in model container [2020-08-22 16:17:44,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:43" (2/3) ... [2020-08-22 16:17:44,114 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60dff0bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:17:44, skipping insertion in model container [2020-08-22 16:17:44,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:17:44" (3/3) ... [2020-08-22 16:17:44,116 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1092a.c [2020-08-22 16:17:44,128 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-08-22 16:17:44,136 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 16:17:44,147 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 16:17:44,166 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 16:17:44,166 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 16:17:44,166 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-08-22 16:17:44,166 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 16:17:44,166 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 16:17:44,167 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 16:17:44,167 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 16:17:44,167 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 16:17:44,183 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-08-22 16:17:44,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-22 16:17:44,189 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:17:44,190 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 16:17:44,190 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:17:44,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:17:44,196 INFO L82 PathProgramCache]: Analyzing trace with hash 263185431, now seen corresponding path program 1 times [2020-08-22 16:17:44,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:17:44,203 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000658088] [2020-08-22 16:17:44,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:17:44,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:17:44,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:17:44,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:17:44,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 16:17:44,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:17:44,421 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 16:17:44,424 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000658088] [2020-08-22 16:17:44,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:17:44,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 16:17:44,430 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281098541] [2020-08-22 16:17:44,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 16:17:44,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:17:44,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 16:17:44,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 16:17:44,453 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 4 states. [2020-08-22 16:17:44,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:17:44,653 INFO L93 Difference]: Finished difference Result 78 states and 111 transitions. [2020-08-22 16:17:44,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 16:17:44,655 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-08-22 16:17:44,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:17:44,666 INFO L225 Difference]: With dead ends: 78 [2020-08-22 16:17:44,666 INFO L226 Difference]: Without dead ends: 39 [2020-08-22 16:17:44,670 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 16:17:44,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-08-22 16:17:44,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-08-22 16:17:44,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-08-22 16:17:44,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 48 transitions. [2020-08-22 16:17:44,715 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 48 transitions. Word has length 18 [2020-08-22 16:17:44,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:17:44,716 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 48 transitions. [2020-08-22 16:17:44,716 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 16:17:44,716 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 48 transitions. [2020-08-22 16:17:44,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-22 16:17:44,717 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:17:44,717 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:17:44,718 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 16:17:44,718 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:17:44,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:17:44,719 INFO L82 PathProgramCache]: Analyzing trace with hash 1491196875, now seen corresponding path program 1 times [2020-08-22 16:17:44,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:17:44,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031786397] [2020-08-22 16:17:44,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:17:44,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 16:17:44,795 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 16:17:44,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 16:17:44,830 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 16:17:44,856 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-08-22 16:17:44,856 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 16:17:44,858 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 16:17:44,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 04:17:44 BoogieIcfgContainer [2020-08-22 16:17:44,884 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 16:17:44,887 INFO L168 Benchmark]: Toolchain (without parser) took 1644.39 ms. Allocated memory was 148.4 MB in the beginning and 205.0 MB in the end (delta: 56.6 MB). Free memory was 102.9 MB in the beginning and 112.8 MB in the end (delta: -9.8 MB). Peak memory consumption was 46.8 MB. Max. memory is 7.1 GB. [2020-08-22 16:17:44,888 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 148.4 MB. Free memory was 121.8 MB in the beginning and 121.5 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-08-22 16:17:44,889 INFO L168 Benchmark]: CACSL2BoogieTranslator took 367.90 ms. Allocated memory was 148.4 MB in the beginning and 205.0 MB in the end (delta: 56.6 MB). Free memory was 102.7 MB in the beginning and 183.9 MB in the end (delta: -81.2 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. [2020-08-22 16:17:44,890 INFO L168 Benchmark]: Boogie Preprocessor took 79.75 ms. Allocated memory is still 205.0 MB. Free memory was 183.9 MB in the beginning and 181.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-08-22 16:17:44,891 INFO L168 Benchmark]: RCFGBuilder took 414.89 ms. Allocated memory is still 205.0 MB. Free memory was 181.3 MB in the beginning and 161.0 MB in the end (delta: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. [2020-08-22 16:17:44,892 INFO L168 Benchmark]: TraceAbstraction took 776.79 ms. Allocated memory is still 205.0 MB. Free memory was 160.3 MB in the beginning and 112.8 MB in the end (delta: 47.6 MB). Peak memory consumption was 47.6 MB. Max. memory is 7.1 GB. [2020-08-22 16:17:44,896 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 148.4 MB. Free memory was 121.8 MB in the beginning and 121.5 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 367.90 ms. Allocated memory was 148.4 MB in the beginning and 205.0 MB in the end (delta: 56.6 MB). Free memory was 102.7 MB in the beginning and 183.9 MB in the end (delta: -81.2 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 79.75 ms. Allocated memory is still 205.0 MB. Free memory was 183.9 MB in the beginning and 181.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 414.89 ms. Allocated memory is still 205.0 MB. Free memory was 181.3 MB in the beginning and 161.0 MB in the end (delta: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 776.79 ms. Allocated memory is still 205.0 MB. Free memory was 160.3 MB in the beginning and 112.8 MB in the end (delta: 47.6 MB). Peak memory consumption was 47.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 81]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 80, overapproximation of bitwiseAnd at line 21, overapproximation of someUnaryFLOAToperation at line 76, overapproximation of someBinaryArithmeticFLOAToperation at line 44. Possible FailurePath: [L11] static const float huge_ceil = 1.0e30; VAL [\old(huge_ceil)=1000000000000000000000000000003, huge_ceil=1000000000000000000000000000000] [L76] float x = -0.0f; VAL [huge_ceil=1000000000000000000000000000000] [L77] CALL, EXPR ceil_float(x) VAL [\old(x)=1000000000000000000000000000004, huge_ceil=1000000000000000000000000000000] [L14] __int32_t i0, j0; [L15] __uint32_t i, ix; VAL [\old(x)=1000000000000000000000000000004, huge_ceil=1000000000000000000000000000000, x=1000000000000000000000000000004] [L17] ieee_float_shape_type gf_u; [L18] gf_u.value = (x) [L19] EXPR gf_u.word [L19] (i0) = gf_u.word [L21] ix = (i0 & 0x7fffffff) [L22] j0 = (ix >> 23) - 0x7f VAL [\old(x)=1000000000000000000000000000004, huge_ceil=1000000000000000000000000000000, i=-36028792723996673, i0=-1, j0=384, x=1000000000000000000000000000004] [L23] COND FALSE !(j0 < 23) VAL [\old(x)=1000000000000000000000000000004, huge_ceil=1000000000000000000000000000000, i=-36028792723996673, i0=-1, j0=384, x=1000000000000000000000000000004] [L43] COND TRUE !((ix) < 0x7f800000L) [L44] return x + x; VAL [\old(x)=1000000000000000000000000000004, huge_ceil=1000000000000000000000000000000, i=-36028792723996673, i0=-1, j0=384, x=1000000000000000000000000000004] [L77] RET, EXPR ceil_float(x) VAL [ceil_float(x)=1000000000000000000000000000002, huge_ceil=1000000000000000000000000000000, x=1000000000000000000000000000004] [L77] float res = ceil_float(x); [L80] EXPR res == -0.0f && __signbit_float(res) == 1 VAL [huge_ceil=1000000000000000000000000000000, res=1000000000000000000000000000002, res == -0.0f && __signbit_float(res) == 1=0, x=1000000000000000000000000000004] [L80] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L81] __VERIFIER_error() VAL [huge_ceil=1000000000000000000000000000000, res=1000000000000000000000000000002, x=1000000000000000000000000000004] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 43 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 46 SDtfs, 41 SDslu, 5 SDs, 0 SdLazy, 51 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=43occurred 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, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 697 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...