/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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_1210.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-06 21:57:34,329 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-06 21:57:34,335 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-06 21:57:34,388 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-11-06 21:57:34,417 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-06 21:57:34,420 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-06 21:57:34,422 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-06 21:57:34,424 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-06 21:57:34,425 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-06 21:57:34,438 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-06 21:57:34,440 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-06 21:57:34,442 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-06 21:57:34,444 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-06 21:57:34,445 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-06 21:57:34,447 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-06 21:57:34,448 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-06 21:57:34,451 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-06 21:57:34,460 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-06 21:57:34,461 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-06 21:57:34,462 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-06 21:57:34,463 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 [2020-11-06 21:57:34,492 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-06 21:57:34,492 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-06 21:57:34,494 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-06 21:57:34,494 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-06 21:57:34,495 INFO L138 SettingsManager]: * Use SBE=true [2020-11-06 21:57:34,495 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-06 21:57:34,495 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-06 21:57:34,495 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-06 21:57:34,496 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-06 21:57:34,496 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-06 21:57:34,496 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-06 21:57:34,496 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-06 21:57:34,497 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-06 21:57:34,497 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-06 21:57:34,497 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-06 21:57:34,497 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-06 21:57:34,498 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-06 21:57:34,498 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-06 21:57:34,498 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-06 21:57:34,498 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-06 21:57:34,499 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-06 21:57:34,499 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 21:57:34,499 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-06 21:57:34,500 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-06 21:57:34,500 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-06 21:57:34,500 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-06 21:57:34,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-06 21:57:34,501 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-06 21:57:34,501 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-06 21:57:34,501 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-06 21:57:34,853 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-06 21:57:34,884 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-06 21:57:34,889 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-06 21:57:34,890 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-06 21:57:34,891 INFO L275 PluginConnector]: CDTParser initialized [2020-11-06 21:57:34,892 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1210.c [2020-11-06 21:57:34,990 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/685597ef4/def7da13a34e4ae992918b5853a33584/FLAGa64a3f1ba [2020-11-06 21:57:35,597 INFO L306 CDTParser]: Found 1 translation units. [2020-11-06 21:57:35,598 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1210.c [2020-11-06 21:57:35,607 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/685597ef4/def7da13a34e4ae992918b5853a33584/FLAGa64a3f1ba [2020-11-06 21:57:35,962 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/685597ef4/def7da13a34e4ae992918b5853a33584 [2020-11-06 21:57:35,967 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-06 21:57:35,975 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-06 21:57:35,980 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-06 21:57:35,980 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-06 21:57:35,985 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-06 21:57:35,985 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:57:35" (1/1) ... [2020-11-06 21:57:35,993 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@249c61d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:35, skipping insertion in model container [2020-11-06 21:57:35,993 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:57:35" (1/1) ... [2020-11-06 21:57:36,002 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-06 21:57:36,048 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-06 21:57:36,253 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 21:57:36,263 INFO L203 MainTranslator]: Completed pre-run [2020-11-06 21:57:36,345 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 21:57:36,374 INFO L208 MainTranslator]: Completed translation [2020-11-06 21:57:36,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:36 WrapperNode [2020-11-06 21:57:36,375 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-06 21:57:36,378 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-06 21:57:36,379 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-06 21:57:36,382 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-06 21:57:36,398 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:36" (1/1) ... [2020-11-06 21:57:36,400 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:36" (1/1) ... [2020-11-06 21:57:36,430 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:36" (1/1) ... [2020-11-06 21:57:36,434 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:36" (1/1) ... [2020-11-06 21:57:36,479 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:36" (1/1) ... [2020-11-06 21:57:36,494 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:36" (1/1) ... [2020-11-06 21:57:36,500 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:36" (1/1) ... [2020-11-06 21:57:36,506 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-06 21:57:36,507 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-06 21:57:36,507 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-06 21:57:36,508 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-06 21:57:36,512 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:36" (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 [2020-11-06 21:57:36,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-06 21:57:36,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-06 21:57:36,604 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-06 21:57:36,605 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-11-06 21:57:36,606 INFO L138 BoogieDeclarations]: Found implementation of procedure modf_double [2020-11-06 21:57:36,606 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-06 21:57:36,606 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-06 21:57:36,606 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-06 21:57:36,607 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-06 21:57:36,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-06 21:57:36,608 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-11-06 21:57:36,608 INFO L130 BoogieDeclarations]: Found specification of procedure modf_double [2020-11-06 21:57:36,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-06 21:57:36,610 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-06 21:57:36,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-06 21:57:36,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-06 21:57:36,611 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-06 21:57:36,611 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-06 21:57:36,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-06 21:57:36,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-06 21:57:36,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-06 21:57:37,345 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-06 21:57:37,345 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-11-06 21:57:37,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:57:37 BoogieIcfgContainer [2020-11-06 21:57:37,347 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-06 21:57:37,349 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-06 21:57:37,349 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-06 21:57:37,352 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-06 21:57:37,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:57:35" (1/3) ... [2020-11-06 21:57:37,353 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7107c0ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:57:37, skipping insertion in model container [2020-11-06 21:57:37,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:36" (2/3) ... [2020-11-06 21:57:37,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7107c0ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:57:37, skipping insertion in model container [2020-11-06 21:57:37,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:57:37" (3/3) ... [2020-11-06 21:57:37,356 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1210.c [2020-11-06 21:57:37,371 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-06 21:57:37,375 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-06 21:57:37,387 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-06 21:57:37,415 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-06 21:57:37,415 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-06 21:57:37,415 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-06 21:57:37,415 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-06 21:57:37,416 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-06 21:57:37,416 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-06 21:57:37,416 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-06 21:57:37,416 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-06 21:57:37,434 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states. [2020-11-06 21:57:37,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-06 21:57:37,441 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 21:57:37,441 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, 1, 1] [2020-11-06 21:57:37,442 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 21:57:37,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 21:57:37,448 INFO L82 PathProgramCache]: Analyzing trace with hash -1345541837, now seen corresponding path program 1 times [2020-11-06 21:57:37,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 21:57:37,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451731377] [2020-11-06 21:57:37,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 21:57:37,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:57:37,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 21:57:37,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:57:37,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-06 21:57:37,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:57:37,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-11-06 21:57:37,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:57:37,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 21:57:37,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451731377] [2020-11-06 21:57:37,735 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 21:57:37,735 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-06 21:57:37,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162805052] [2020-11-06 21:57:37,741 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-06 21:57:37,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 21:57:37,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-06 21:57:37,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-06 21:57:37,760 INFO L87 Difference]: Start difference. First operand 62 states. Second operand 4 states. [2020-11-06 21:57:38,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 21:57:38,036 INFO L93 Difference]: Finished difference Result 113 states and 168 transitions. [2020-11-06 21:57:38,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-06 21:57:38,038 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-11-06 21:57:38,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 21:57:38,049 INFO L225 Difference]: With dead ends: 113 [2020-11-06 21:57:38,049 INFO L226 Difference]: Without dead ends: 55 [2020-11-06 21:57:38,058 INFO L677 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 [2020-11-06 21:57:38,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-11-06 21:57:38,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-11-06 21:57:38,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-11-06 21:57:38,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 61 transitions. [2020-11-06 21:57:38,117 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 61 transitions. Word has length 26 [2020-11-06 21:57:38,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 21:57:38,117 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 61 transitions. [2020-11-06 21:57:38,117 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-06 21:57:38,118 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 61 transitions. [2020-11-06 21:57:38,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-06 21:57:38,120 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 21:57:38,120 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, 1, 1, 1, 1] [2020-11-06 21:57:38,121 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-06 21:57:38,121 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 21:57:38,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 21:57:38,122 INFO L82 PathProgramCache]: Analyzing trace with hash -334765572, now seen corresponding path program 1 times [2020-11-06 21:57:38,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 21:57:38,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491696269] [2020-11-06 21:57:38,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 21:57:38,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:57:38,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 21:57:38,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:57:38,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-06 21:57:38,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:57:38,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-11-06 21:57:38,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:57:38,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 21:57:38,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491696269] [2020-11-06 21:57:38,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 21:57:38,334 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-06 21:57:38,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016758815] [2020-11-06 21:57:38,336 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-06 21:57:38,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 21:57:38,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-06 21:57:38,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-06 21:57:38,337 INFO L87 Difference]: Start difference. First operand 55 states and 61 transitions. Second operand 5 states. [2020-11-06 21:57:38,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 21:57:38,556 INFO L93 Difference]: Finished difference Result 59 states and 64 transitions. [2020-11-06 21:57:38,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-06 21:57:38,557 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2020-11-06 21:57:38,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 21:57:38,559 INFO L225 Difference]: With dead ends: 59 [2020-11-06 21:57:38,559 INFO L226 Difference]: Without dead ends: 55 [2020-11-06 21:57:38,560 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-06 21:57:38,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-11-06 21:57:38,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-11-06 21:57:38,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-11-06 21:57:38,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 60 transitions. [2020-11-06 21:57:38,572 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 60 transitions. Word has length 28 [2020-11-06 21:57:38,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 21:57:38,574 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 60 transitions. [2020-11-06 21:57:38,574 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-06 21:57:38,574 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 60 transitions. [2020-11-06 21:57:38,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-11-06 21:57:38,576 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 21:57:38,576 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 21:57:38,576 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-06 21:57:38,576 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 21:57:38,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 21:57:38,577 INFO L82 PathProgramCache]: Analyzing trace with hash 851286894, now seen corresponding path program 1 times [2020-11-06 21:57:38,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 21:57:38,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636843293] [2020-11-06 21:57:38,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 21:57:38,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 21:57:38,649 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 21:57:38,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 21:57:38,693 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 21:57:38,732 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-06 21:57:38,732 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-06 21:57:38,732 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-06 21:57:38,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 09:57:38 BoogieIcfgContainer [2020-11-06 21:57:38,783 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-06 21:57:38,785 INFO L168 Benchmark]: Toolchain (without parser) took 2814.76 ms. Allocated memory is still 151.0 MB. Free memory was 125.6 MB in the beginning and 91.8 MB in the end (delta: 33.7 MB). Peak memory consumption was 34.8 MB. Max. memory is 8.0 GB. [2020-11-06 21:57:38,786 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory is still 123.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 21:57:38,787 INFO L168 Benchmark]: CACSL2BoogieTranslator took 396.09 ms. Allocated memory is still 151.0 MB. Free memory was 124.9 MB in the beginning and 113.3 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-11-06 21:57:38,788 INFO L168 Benchmark]: Boogie Preprocessor took 128.03 ms. Allocated memory is still 151.0 MB. Free memory was 113.3 MB in the beginning and 111.1 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-06 21:57:38,789 INFO L168 Benchmark]: RCFGBuilder took 839.98 ms. Allocated memory is still 151.0 MB. Free memory was 110.9 MB in the beginning and 112.1 MB in the end (delta: -1.2 MB). Peak memory consumption was 12.5 MB. Max. memory is 8.0 GB. [2020-11-06 21:57:38,790 INFO L168 Benchmark]: TraceAbstraction took 1433.92 ms. Allocated memory is still 151.0 MB. Free memory was 111.6 MB in the beginning and 91.8 MB in the end (delta: 19.8 MB). Peak memory consumption was 20.3 MB. Max. memory is 8.0 GB. [2020-11-06 21:57:38,793 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory is still 123.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 396.09 ms. Allocated memory is still 151.0 MB. Free memory was 124.9 MB in the beginning and 113.3 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 128.03 ms. Allocated memory is still 151.0 MB. Free memory was 113.3 MB in the beginning and 111.1 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 839.98 ms. Allocated memory is still 151.0 MB. Free memory was 110.9 MB in the beginning and 112.1 MB in the end (delta: -1.2 MB). Peak memory consumption was 12.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1433.92 ms. Allocated memory is still 151.0 MB. Free memory was 111.6 MB in the beginning and 91.8 MB in the end (delta: 19.8 MB). Peak memory consumption was 20.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 17, overapproximation of someBinaryArithmeticDOUBLEoperation at line 118, overapproximation of bitwiseAnd at line 35. Possible FailurePath: [L19] static const double one_modf = 1.0; VAL [\old(one_modf)=4294967300, one_modf=1] [L118] double x = 0.0 / 0.0; [L119] double iptr; VAL [iptr={9:0}, one_modf=1] [L120] CALL, EXPR modf_double(x, &iptr) VAL [\old(x)=4294967310, iptr={9:0}, one_modf=1] [L22] __int32_t i0, i1, j0; [L23] __uint32_t i; VAL [\old(x)=4294967310, iptr={9:0}, iptr={9:0}, one_modf=1, x=4294967310] [L25] ieee_double_shape_type ew_u; [L26] ew_u.value = (x) [L27] EXPR ew_u.parts.msw [L27] (i0) = ew_u.parts.msw [L28] EXPR ew_u.parts.lsw [L28] (i1) = ew_u.parts.lsw [L30] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff VAL [\old(x)=4294967310, i0=0, i1=-1, iptr={9:0}, iptr={9:0}, one_modf=1, x=4294967310] [L31] COND TRUE j0 < 20 VAL [\old(x)=4294967310, i0=0, i1=-1, iptr={9:0}, iptr={9:0}, j0=-1, one_modf=1, x=4294967310] [L32] COND TRUE j0 < 0 VAL [\old(x)=4294967310, i0=0, i1=-1, iptr={9:0}, iptr={9:0}, j0=-1, one_modf=1, x=4294967310] [L34] ieee_double_shape_type iw_u; [L35] iw_u.parts.msw = (i0 & 0x80000000) [L36] iw_u.parts.lsw = (0) [L37] EXPR iw_u.value [L37] (*iptr) = iw_u.value [L39] return x; VAL [\old(x)=4294967310, \result=4294967310, i0=0, i1=-1, iptr={9:0}, iptr={9:0}, j0=-1, one_modf=1, x=4294967310] [L120] RET, EXPR modf_double(x, &iptr) VAL [iptr={9:0}, modf_double(x, &iptr)=4294967310, one_modf=1, x=4294967310] [L120] double res = modf_double(x, &iptr); [L123] EXPR \read(iptr) VAL [\read(iptr)=4294967301, iptr={9:0}, one_modf=1, res=4294967310, x=4294967310] [L123] CALL, EXPR isnan_double(iptr) VAL [\old(x)=4294967301, one_modf=1] [L17] return x != x; VAL [\old(x)=4294967301, \result=1, one_modf=1, x=4294967301] [L123] RET, EXPR isnan_double(iptr) VAL [\read(iptr)=4294967301, iptr={9:0}, isnan_double(iptr)=1, one_modf=1, res=4294967310, x=4294967310] [L123] isnan_double(iptr) && !isnan_double(res) VAL [\read(iptr)=4294967301, iptr={9:0}, isnan_double(iptr)=1, isnan_double(iptr) && !isnan_double(res)=1, one_modf=1, res=4294967310, x=4294967310] [L123] CALL, EXPR isnan_double(res) VAL [\old(x)=4294967310, one_modf=1] [L17] return x != x; VAL [\old(x)=4294967310, \result=0, one_modf=1, x=4294967310] [L123] RET, EXPR isnan_double(res) VAL [\read(iptr)=4294967301, iptr={9:0}, isnan_double(iptr)=1, isnan_double(iptr) && !isnan_double(res)=1, isnan_double(res)=0, one_modf=1, res=4294967310, x=4294967310] [L123] isnan_double(iptr) && !isnan_double(res) VAL [\read(iptr)=4294967301, iptr={9:0}, isnan_double(iptr)=1, isnan_double(iptr) && !isnan_double(res)=1, isnan_double(res)=0, one_modf=1, res=4294967310, x=4294967310] [L123] COND TRUE isnan_double(iptr) && !isnan_double(res) [L124] CALL reach_error() VAL [one_modf=1] [L3] __assert_fail("0", "double_req_bl_1210.c", 3, "reach_error") VAL [one_modf=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 62 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.3s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 120 SDtfs, 16 SDslu, 124 SDs, 0 SdLazy, 154 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 87 NumberOfCodeBlocks, 87 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 52 ConstructedInterpolants, 0 QuantifiedInterpolants, 3721 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...