/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_0720.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 16:16:51,602 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 16:16:51,605 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 16:16:51,631 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 16:16:51,632 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 16:16:51,633 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 16:16:51,634 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 16:16:51,636 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 16:16:51,637 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 16:16:51,638 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 16:16:51,639 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 16:16:51,640 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 16:16:51,640 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 16:16:51,641 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 16:16:51,642 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 16:16:51,643 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 16:16:51,644 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 16:16:51,645 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 16:16:51,647 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 16:16:51,648 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 16:16:51,650 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 16:16:51,651 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 16:16:51,652 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 16:16:51,652 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 16:16:51,655 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 16:16:51,662 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 16:16:51,663 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 16:16:51,663 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 16:16:51,664 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 16:16:51,688 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 16:16:51,689 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 16:16:51,690 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 16:16:51,690 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 16:16:51,690 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 16:16:51,690 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 16:16:51,691 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 16:16:51,691 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 16:16:51,691 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 16:16:51,691 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 16:16:51,691 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 16:16:51,691 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 16:16:51,692 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 16:16:51,693 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 16:16:51,693 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 16:16:51,693 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 16:16:51,693 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 16:16:51,693 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 16:16:51,695 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 16:16:51,695 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 16:16:51,695 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 16:16:51,695 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 16:16:51,695 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 16:16:51,696 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 16:16:51,696 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 16:16:51,696 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 16:16:51,696 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 16:16:51,696 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 16:16:51,696 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 16:16:51,697 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-22 16:16:52,012 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 16:16:52,030 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 16:16:52,036 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 16:16:52,037 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 16:16:52,038 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 16:16:52,039 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0720.c [2020-08-22 16:16:52,110 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8de14b73/f22aeb29eea542c38a6b7de527e23800/FLAGc4e002404 [2020-08-22 16:16:52,577 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 16:16:52,577 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_0720.c [2020-08-22 16:16:52,585 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8de14b73/f22aeb29eea542c38a6b7de527e23800/FLAGc4e002404 [2020-08-22 16:16:52,956 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8de14b73/f22aeb29eea542c38a6b7de527e23800 [2020-08-22 16:16:52,966 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 16:16:52,968 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 16:16:52,969 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 16:16:52,969 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 16:16:52,973 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 16:16:52,974 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:16:52" (1/1) ... [2020-08-22 16:16:52,976 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3155a6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:16:52, skipping insertion in model container [2020-08-22 16:16:52,977 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:16:52" (1/1) ... [2020-08-22 16:16:52,984 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 16:16:53,020 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 16:16:53,263 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:16:53,267 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 16:16:53,397 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:16:53,420 INFO L208 MainTranslator]: Completed translation [2020-08-22 16:16:53,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:16:53 WrapperNode [2020-08-22 16:16:53,421 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 16:16:53,422 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 16:16:53,422 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 16:16:53,422 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 16:16:53,434 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:16:53" (1/1) ... [2020-08-22 16:16:53,434 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:16:53" (1/1) ... [2020-08-22 16:16:53,445 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:16:53" (1/1) ... [2020-08-22 16:16:53,445 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:16:53" (1/1) ... [2020-08-22 16:16:53,459 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:16:53" (1/1) ... [2020-08-22 16:16:53,467 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:16:53" (1/1) ... [2020-08-22 16:16:53,470 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:16:53" (1/1) ... [2020-08-22 16:16:53,473 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 16:16:53,474 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 16:16:53,474 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 16:16:53,474 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 16:16:53,475 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:16:53" (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 16:16:53,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 16:16:53,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 16:16:53,533 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-22 16:16:53,533 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrt [2020-08-22 16:16:53,533 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 16:16:53,534 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 16:16:53,534 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-08-22 16:16:53,534 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-22 16:16:53,534 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrt [2020-08-22 16:16:53,534 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 16:16:53,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-22 16:16:53,534 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 16:16:53,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 16:16:53,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 16:16:53,535 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-22 16:16:53,535 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 16:16:53,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 16:16:53,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 16:16:54,055 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 16:16:54,055 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-08-22 16:16:54,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:16:54 BoogieIcfgContainer [2020-08-22 16:16:54,060 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 16:16:54,061 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 16:16:54,062 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 16:16:54,065 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 16:16:54,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:16:52" (1/3) ... [2020-08-22 16:16:54,066 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62779ff0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:16:54, skipping insertion in model container [2020-08-22 16:16:54,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:16:53" (2/3) ... [2020-08-22 16:16:54,066 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62779ff0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:16:54, skipping insertion in model container [2020-08-22 16:16:54,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:16:54" (3/3) ... [2020-08-22 16:16:54,068 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_0720.c [2020-08-22 16:16:54,079 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-08-22 16:16:54,086 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 16:16:54,097 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 16:16:54,118 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 16:16:54,118 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 16:16:54,118 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-08-22 16:16:54,118 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 16:16:54,119 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 16:16:54,119 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 16:16:54,119 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 16:16:54,119 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 16:16:54,138 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states. [2020-08-22 16:16:54,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-22 16:16:54,145 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:16:54,146 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] [2020-08-22 16:16:54,146 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:16:54,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:16:54,151 INFO L82 PathProgramCache]: Analyzing trace with hash -1131346129, now seen corresponding path program 1 times [2020-08-22 16:16:54,158 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:16:54,159 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805902148] [2020-08-22 16:16:54,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:16:54,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:16:54,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:16:54,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:16:54,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 16:16:54,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:16:54,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 16:16:54,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:16:54,387 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 16:16:54,388 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805902148] [2020-08-22 16:16:54,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:16:54,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 16:16:54,390 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318621340] [2020-08-22 16:16:54,395 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 16:16:54,395 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:16:54,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 16:16:54,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 16:16:54,409 INFO L87 Difference]: Start difference. First operand 62 states. Second operand 4 states. [2020-08-22 16:16:54,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:16:54,684 INFO L93 Difference]: Finished difference Result 116 states and 172 transitions. [2020-08-22 16:16:54,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 16:16:54,686 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-08-22 16:16:54,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:16:54,699 INFO L225 Difference]: With dead ends: 116 [2020-08-22 16:16:54,699 INFO L226 Difference]: Without dead ends: 58 [2020-08-22 16:16:54,703 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 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 16:16:54,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-08-22 16:16:54,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-08-22 16:16:54,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-08-22 16:16:54,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 77 transitions. [2020-08-22 16:16:54,754 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 77 transitions. Word has length 20 [2020-08-22 16:16:54,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:16:54,754 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 77 transitions. [2020-08-22 16:16:54,754 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 16:16:54,755 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 77 transitions. [2020-08-22 16:16:54,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-22 16:16:54,756 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:16:54,756 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] [2020-08-22 16:16:54,757 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 16:16:54,757 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:16:54,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:16:54,758 INFO L82 PathProgramCache]: Analyzing trace with hash -2124284734, now seen corresponding path program 1 times [2020-08-22 16:16:54,758 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:16:54,759 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154039952] [2020-08-22 16:16:54,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:16:54,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 16:16:54,803 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 16:16:54,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 16:16:54,832 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 16:16:54,860 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-08-22 16:16:54,860 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 16:16:54,861 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 16:16:54,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 04:16:54 BoogieIcfgContainer [2020-08-22 16:16:54,900 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 16:16:54,903 INFO L168 Benchmark]: Toolchain (without parser) took 1934.79 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 102.6 MB in the beginning and 91.8 MB in the end (delta: 10.9 MB). Peak memory consumption was 73.8 MB. Max. memory is 7.1 GB. [2020-08-22 16:16:54,905 INFO L168 Benchmark]: CDTParser took 1.33 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-08-22 16:16:54,906 INFO L168 Benchmark]: CACSL2BoogieTranslator took 452.50 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 102.4 MB in the beginning and 179.4 MB in the end (delta: -77.0 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. [2020-08-22 16:16:54,907 INFO L168 Benchmark]: Boogie Preprocessor took 51.61 ms. Allocated memory is still 202.9 MB. Free memory was 179.4 MB in the beginning and 177.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-08-22 16:16:54,927 INFO L168 Benchmark]: RCFGBuilder took 586.34 ms. Allocated memory is still 202.9 MB. Free memory was 177.5 MB in the beginning and 148.4 MB in the end (delta: 29.0 MB). Peak memory consumption was 29.0 MB. Max. memory is 7.1 GB. [2020-08-22 16:16:54,928 INFO L168 Benchmark]: TraceAbstraction took 839.19 ms. Allocated memory is still 202.9 MB. Free memory was 148.4 MB in the beginning and 91.8 MB in the end (delta: 56.7 MB). Peak memory consumption was 56.7 MB. Max. memory is 7.1 GB. [2020-08-22 16:16:54,932 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.33 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 452.50 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 102.4 MB in the beginning and 179.4 MB in the end (delta: -77.0 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 51.61 ms. Allocated memory is still 202.9 MB. Free memory was 179.4 MB in the beginning and 177.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 586.34 ms. Allocated memory is still 202.9 MB. Free memory was 177.5 MB in the beginning and 148.4 MB in the end (delta: 29.0 MB). Peak memory consumption was 29.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 839.19 ms. Allocated memory is still 202.9 MB. Free memory was 148.4 MB in the beginning and 91.8 MB in the end (delta: 56.7 MB). Peak memory consumption was 56.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 145]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 18, overapproximation of someBinaryArithmeticDOUBLEoperation at line 36, overapproximation of bitwiseAnd at line 35. Possible FailurePath: [L20] static const double one_sqrt = 1.0, tiny_sqrt = 1.0e-300; VAL [\old(one_sqrt)=14, \old(tiny_sqrt)=11, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L139] double x = 0.0 / 0.0; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L141] CALL, EXPR __ieee754_sqrt(x) VAL [\old(x)=15, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L23] double z; [L24] __int32_t sign = 0x80000000; [L25] __uint32_t r, t1, s1, ix1, q1; [L26] __int32_t ix0, s0, q, m, t, i; VAL [\old(x)=15, one_sqrt=1, sign=-2147483648, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=15] [L29] ieee_double_shape_type ew_u; [L30] ew_u.value = (x) [L31] EXPR ew_u.parts.msw [L31] (ix0) = ew_u.parts.msw [L32] EXPR ew_u.parts.lsw [L32] (ix1) = ew_u.parts.lsw [L35] COND TRUE (ix0 & 0x7ff00000) == 0x7ff00000 [L36] return x * x + x; VAL [\old(x)=15, ix0=0, ix1=16, one_sqrt=1, sign=-2147483648, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=15] [L141] RET, EXPR __ieee754_sqrt(x) VAL [__ieee754_sqrt(x)=13, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=15] [L141] double res = __ieee754_sqrt(x); [L144] CALL, EXPR isnan_double(res) VAL [\old(x)=13, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L18] return x != x; VAL [\old(x)=13, \result=0, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=13] [L144] RET, EXPR isnan_double(res) VAL [isnan_double(res)=0, one_sqrt=1, res=13, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=15] [L144] COND TRUE !isnan_double(res) [L145] __VERIFIER_error() VAL [one_sqrt=1, res=13, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=15] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 62 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 76 SDtfs, 72 SDslu, 5 SDs, 0 SdLazy, 78 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, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=62occurred 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, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 874 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...