/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/double_req_bl_1051.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 12:58:12,131 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 12:58:12,135 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 12:58:12,160 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 12:58:12,161 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 12:58:12,162 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 12:58:12,163 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 12:58:12,165 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 12:58:12,167 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 12:58:12,168 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 12:58:12,169 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 12:58:12,170 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 12:58:12,171 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 12:58:12,172 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 12:58:12,173 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 12:58:12,174 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 12:58:12,175 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 12:58:12,176 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 12:58:12,178 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 12:58:12,180 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 12:58:12,182 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 12:58:12,183 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 12:58:12,185 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 12:58:12,186 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 12:58:12,188 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 12:58:12,197 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 12:58:12,198 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 12:58:12,199 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 12:58:12,200 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-04 12:58:12,226 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 12:58:12,226 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 12:58:12,227 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-04 12:58:12,228 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-04 12:58:12,228 INFO L138 SettingsManager]: * Use SBE=true [2020-09-04 12:58:12,228 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 12:58:12,228 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 12:58:12,228 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 12:58:12,229 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 12:58:12,229 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 12:58:12,229 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 12:58:12,229 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 12:58:12,229 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 12:58:12,230 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 12:58:12,230 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 12:58:12,230 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 12:58:12,230 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 12:58:12,230 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 12:58:12,231 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-04 12:58:12,231 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 12:58:12,231 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 12:58:12,231 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 12:58:12,231 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 12:58:12,232 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-04 12:58:12,232 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-04 12:58:12,232 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-04 12:58:12,232 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-04 12:58:12,232 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 12:58:12,233 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-04 12:58:12,233 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-04 12:58:12,674 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 12:58:12,699 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 12:58:12,703 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 12:58:12,705 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 12:58:12,706 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 12:58:12,707 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1051.c [2020-09-04 12:58:12,793 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4b8e4d44c/e0d6c075440a4fb7a4d834258be44429/FLAGcd6134604 [2020-09-04 12:58:13,329 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 12:58:13,330 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1051.c [2020-09-04 12:58:13,338 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4b8e4d44c/e0d6c075440a4fb7a4d834258be44429/FLAGcd6134604 [2020-09-04 12:58:13,666 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4b8e4d44c/e0d6c075440a4fb7a4d834258be44429 [2020-09-04 12:58:13,678 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 12:58:13,680 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 12:58:13,681 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 12:58:13,681 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 12:58:13,685 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 12:58:13,687 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 12:58:13" (1/1) ... [2020-09-04 12:58:13,691 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b8831ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:58:13, skipping insertion in model container [2020-09-04 12:58:13,691 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 12:58:13" (1/1) ... [2020-09-04 12:58:13,700 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 12:58:13,728 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 12:58:13,966 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 12:58:13,971 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 12:58:14,009 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 12:58:14,113 INFO L208 MainTranslator]: Completed translation [2020-09-04 12:58:14,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:58:14 WrapperNode [2020-09-04 12:58:14,114 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 12:58:14,115 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 12:58:14,115 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 12:58:14,115 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 12:58:14,131 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:58:14" (1/1) ... [2020-09-04 12:58:14,131 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:58:14" (1/1) ... [2020-09-04 12:58:14,142 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:58:14" (1/1) ... [2020-09-04 12:58:14,143 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:58:14" (1/1) ... [2020-09-04 12:58:14,156 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:58:14" (1/1) ... [2020-09-04 12:58:14,162 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:58:14" (1/1) ... [2020-09-04 12:58:14,165 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:58:14" (1/1) ... [2020-09-04 12:58:14,168 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 12:58:14,168 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 12:58:14,169 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 12:58:14,169 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 12:58:14,170 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:58:14" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 12:58:14,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 12:58:14,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 12:58:14,251 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_double [2020-09-04 12:58:14,252 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-09-04 12:58:14,252 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 12:58:14,252 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 12:58:14,253 INFO L130 BoogieDeclarations]: Found specification of procedure floor_double [2020-09-04 12:58:14,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 12:58:14,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-04 12:58:14,254 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 12:58:14,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 12:58:14,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 12:58:14,255 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-04 12:58:14,256 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-09-04 12:58:14,256 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 12:58:14,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 12:58:14,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 12:58:14,618 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 12:58:14,619 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-04 12:58:14,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 12:58:14 BoogieIcfgContainer [2020-09-04 12:58:14,623 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 12:58:14,625 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 12:58:14,625 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 12:58:14,629 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 12:58:14,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 12:58:13" (1/3) ... [2020-09-04 12:58:14,630 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@155144ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 12:58:14, skipping insertion in model container [2020-09-04 12:58:14,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:58:14" (2/3) ... [2020-09-04 12:58:14,631 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@155144ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 12:58:14, skipping insertion in model container [2020-09-04 12:58:14,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 12:58:14" (3/3) ... [2020-09-04 12:58:14,634 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1051.c [2020-09-04 12:58:14,646 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-04 12:58:14,654 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 12:58:14,677 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 12:58:14,717 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 12:58:14,718 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 12:58:14,718 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-04 12:58:14,718 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 12:58:14,718 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 12:58:14,718 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 12:58:14,718 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 12:58:14,719 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 12:58:14,741 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2020-09-04 12:58:14,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-04 12:58:14,748 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 12:58:14,749 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 12:58:14,750 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 12:58:14,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 12:58:14,756 INFO L82 PathProgramCache]: Analyzing trace with hash 1635654302, now seen corresponding path program 1 times [2020-09-04 12:58:14,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 12:58:14,766 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313027869] [2020-09-04 12:58:14,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 12:58:14,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:58:14,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 12:58:14,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:58:15,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 12:58:15,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:58:15,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 12:58:15,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:58:15,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 12:58:15,054 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313027869] [2020-09-04 12:58:15,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 12:58:15,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 12:58:15,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250847645] [2020-09-04 12:58:15,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 12:58:15,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 12:58:15,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 12:58:15,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 12:58:15,085 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 4 states. [2020-09-04 12:58:15,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 12:58:15,306 INFO L93 Difference]: Finished difference Result 86 states and 124 transitions. [2020-09-04 12:58:15,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-04 12:58:15,309 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-09-04 12:58:15,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 12:58:15,322 INFO L225 Difference]: With dead ends: 86 [2020-09-04 12:58:15,322 INFO L226 Difference]: Without dead ends: 43 [2020-09-04 12:58:15,326 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-04 12:58:15,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-09-04 12:58:15,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-09-04 12:58:15,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-09-04 12:58:15,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 57 transitions. [2020-09-04 12:58:15,371 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 57 transitions. Word has length 23 [2020-09-04 12:58:15,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 12:58:15,371 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 57 transitions. [2020-09-04 12:58:15,371 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 12:58:15,372 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 57 transitions. [2020-09-04 12:58:15,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-04 12:58:15,373 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 12:58:15,373 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 12:58:15,374 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 12:58:15,374 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 12:58:15,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 12:58:15,374 INFO L82 PathProgramCache]: Analyzing trace with hash 744784661, now seen corresponding path program 1 times [2020-09-04 12:58:15,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 12:58:15,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741433473] [2020-09-04 12:58:15,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 12:58:15,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 12:58:15,425 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 12:58:15,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 12:58:15,465 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 12:58:15,497 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-04 12:58:15,497 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 12:58:15,499 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 12:58:15,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 12:58:15 BoogieIcfgContainer [2020-09-04 12:58:15,533 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 12:58:15,536 INFO L168 Benchmark]: Toolchain (without parser) took 1854.93 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 102.3 MB in the beginning and 104.1 MB in the end (delta: -1.8 MB). Peak memory consumption was 61.1 MB. Max. memory is 7.1 GB. [2020-09-04 12:58:15,537 INFO L168 Benchmark]: CDTParser took 0.51 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 12:58:15,538 INFO L168 Benchmark]: CACSL2BoogieTranslator took 433.51 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 102.1 MB in the beginning and 180.3 MB in the end (delta: -78.2 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. [2020-09-04 12:58:15,539 INFO L168 Benchmark]: Boogie Preprocessor took 53.05 ms. Allocated memory is still 202.4 MB. Free memory was 180.3 MB in the beginning and 178.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-04 12:58:15,540 INFO L168 Benchmark]: RCFGBuilder took 455.25 ms. Allocated memory is still 202.4 MB. Free memory was 178.3 MB in the beginning and 155.4 MB in the end (delta: 22.9 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. [2020-09-04 12:58:15,541 INFO L168 Benchmark]: TraceAbstraction took 908.42 ms. Allocated memory is still 202.4 MB. Free memory was 154.7 MB in the beginning and 104.1 MB in the end (delta: 50.6 MB). Peak memory consumption was 50.6 MB. Max. memory is 7.1 GB. [2020-09-04 12:58:15,546 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.51 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 433.51 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 102.1 MB in the beginning and 180.3 MB in the end (delta: -78.2 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 53.05 ms. Allocated memory is still 202.4 MB. Free memory was 180.3 MB in the beginning and 178.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 455.25 ms. Allocated memory is still 202.4 MB. Free memory was 178.3 MB in the beginning and 155.4 MB in the end (delta: 22.9 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 908.42 ms. Allocated memory is still 202.4 MB. Free memory was 154.7 MB in the beginning and 104.1 MB in the end (delta: 50.6 MB). Peak memory consumption was 50.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 93]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftRight at line 37, overapproximation of bitwiseOr at line 38, overapproximation of someBinaryArithmeticDOUBLEoperation at line 88, overapproximation of bitwiseAnd at line 25, overapproximation of someBinaryDOUBLEComparisonOperation at line 80. Possible FailurePath: [L14] static const double huge_floor = 1.0e300; VAL [\old(huge_floor)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000004, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L88] double x = 0.0 / 0.0; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L89] CALL, EXPR floor_double(x) VAL [\old(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000007, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L17] __int32_t i0, i1, j0; [L18] __uint32_t i, j; VAL [\old(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000007, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000007] [L20] ieee_double_shape_type ew_u; [L21] ew_u.value = (x) [L22] EXPR ew_u.parts.msw [L22] (i0) = ew_u.parts.msw [L23] EXPR ew_u.parts.lsw [L23] (i1) = ew_u.parts.lsw [L25] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff VAL [\old(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000007, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=0, i1=-1, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000007] [L26] COND TRUE j0 < 20 VAL [\old(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000007, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=0, i1=-1, j0=0, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000007] [L27] COND FALSE !(j0 < 0) [L37] i = (0x000fffff) >> j0 VAL [\old(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000007, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=0, i1=-1, j0=0, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000007] [L38] COND TRUE ((i0 & i) | i1) == 0 [L39] return x; VAL [\old(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000007, \result=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000007, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=0, i1=-1, j0=0, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000007] [L89] RET, EXPR floor_double(x) VAL [floor_double(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000007, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000007] [L89] double res = floor_double(x); [L92] CALL, EXPR isnan_double(res) VAL [\old(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000007, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L80] return x != x; VAL [\old(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000007, \result=0, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000007] [L92] RET, EXPR isnan_double(res) VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, isnan_double(res)=0, res=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000007, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000007] [L92] COND TRUE !isnan_double(res) [L93] __VERIFIER_error() VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, res=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000007, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000007] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 47 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: 56 SDtfs, 52 SDslu, 5 SDs, 0 SdLazy, 58 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred 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, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 1012 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...