/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_1091.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 17:55:19,539 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 17:55:19,543 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 17:55:19,601 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 17:55:19,602 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 17:55:19,606 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 17:55:19,610 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 17:55:19,618 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 17:55:19,621 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 17:55:19,627 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 17:55:19,629 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 17:55:19,630 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 17:55:19,631 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 17:55:19,634 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 17:55:19,636 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 17:55:19,637 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 17:55:19,639 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 17:55:19,642 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 17:55:19,665 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 17:55:19,674 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 17:55:19,676 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 17:55:19,677 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 17:55:19,680 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 17:55:19,681 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 17:55:19,690 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 17:55:19,703 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 17:55:19,705 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 17:55:19,705 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 17:55:19,707 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 [2020-10-23 17:55:19,764 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 17:55:19,764 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 17:55:19,769 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-23 17:55:19,769 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-23 17:55:19,770 INFO L138 SettingsManager]: * Use SBE=true [2020-10-23 17:55:19,770 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 17:55:19,770 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 17:55:19,771 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 17:55:19,771 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 17:55:19,771 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 17:55:19,773 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 17:55:19,773 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 17:55:19,773 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 17:55:19,773 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 17:55:19,774 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 17:55:19,774 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 17:55:19,774 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 17:55:19,775 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 17:55:19,775 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-23 17:55:19,775 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 17:55:19,776 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 17:55:19,776 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 17:55:19,776 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 17:55:19,777 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-23 17:55:19,777 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-23 17:55:19,777 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-23 17:55:19,777 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-23 17:55:19,778 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 17:55:19,778 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-23 17:55:19,778 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 17:55:20,187 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 17:55:20,234 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 17:55:20,237 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 17:55:20,239 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 17:55:20,240 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 17:55:20,241 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1091.c [2020-10-23 17:55:20,343 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ab49a174/9350bd7fcc0a4529b5d4df5caee2a1f7/FLAG491e367bc [2020-10-23 17:55:20,951 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 17:55:20,951 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1091.c [2020-10-23 17:55:20,962 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ab49a174/9350bd7fcc0a4529b5d4df5caee2a1f7/FLAG491e367bc [2020-10-23 17:55:21,351 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ab49a174/9350bd7fcc0a4529b5d4df5caee2a1f7 [2020-10-23 17:55:21,357 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 17:55:21,365 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 17:55:21,369 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 17:55:21,370 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 17:55:21,374 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 17:55:21,375 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 05:55:21" (1/1) ... [2020-10-23 17:55:21,380 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e0cd986 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:21, skipping insertion in model container [2020-10-23 17:55:21,380 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 05:55:21" (1/1) ... [2020-10-23 17:55:21,388 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 17:55:21,413 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 17:55:21,608 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 17:55:21,617 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 17:55:21,650 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 17:55:21,667 INFO L208 MainTranslator]: Completed translation [2020-10-23 17:55:21,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:21 WrapperNode [2020-10-23 17:55:21,668 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 17:55:21,669 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 17:55:21,669 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 17:55:21,669 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 17:55:21,682 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:21" (1/1) ... [2020-10-23 17:55:21,682 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:21" (1/1) ... [2020-10-23 17:55:21,691 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:21" (1/1) ... [2020-10-23 17:55:21,692 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:21" (1/1) ... [2020-10-23 17:55:21,704 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:21" (1/1) ... [2020-10-23 17:55:21,709 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:21" (1/1) ... [2020-10-23 17:55:21,712 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:21" (1/1) ... [2020-10-23 17:55:21,715 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 17:55:21,716 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 17:55:21,716 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 17:55:21,716 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 17:55:21,717 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:21" (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 [2020-10-23 17:55:21,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 17:55:21,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 17:55:21,781 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 17:55:21,781 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-10-23 17:55:21,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_double [2020-10-23 17:55:21,782 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 17:55:21,782 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 17:55:21,782 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 17:55:21,782 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 17:55:21,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 17:55:21,783 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-10-23 17:55:21,783 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_double [2020-10-23 17:55:21,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-23 17:55:21,783 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 17:55:21,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 17:55:21,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 17:55:21,784 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-23 17:55:21,784 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 17:55:21,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 17:55:21,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 17:55:21,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 17:55:22,249 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 17:55:22,249 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-23 17:55:22,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 05:55:22 BoogieIcfgContainer [2020-10-23 17:55:22,251 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 17:55:22,253 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 17:55:22,253 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 17:55:22,256 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 17:55:22,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 05:55:21" (1/3) ... [2020-10-23 17:55:22,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24f58ff4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 05:55:22, skipping insertion in model container [2020-10-23 17:55:22,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:21" (2/3) ... [2020-10-23 17:55:22,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24f58ff4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 05:55:22, skipping insertion in model container [2020-10-23 17:55:22,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 05:55:22" (3/3) ... [2020-10-23 17:55:22,260 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1091.c [2020-10-23 17:55:22,272 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-23 17:55:22,276 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 17:55:22,290 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 17:55:22,318 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 17:55:22,318 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 17:55:22,318 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-23 17:55:22,319 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 17:55:22,319 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 17:55:22,319 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 17:55:22,319 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 17:55:22,319 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 17:55:22,337 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2020-10-23 17:55:22,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-23 17:55:22,343 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 17:55:22,344 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] [2020-10-23 17:55:22,344 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 17:55:22,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 17:55:22,351 INFO L82 PathProgramCache]: Analyzing trace with hash -678790895, now seen corresponding path program 1 times [2020-10-23 17:55:22,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 17:55:22,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368934102] [2020-10-23 17:55:22,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 17:55:22,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:55:22,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 17:55:22,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:55:22,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 17:55:22,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:55:22,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-23 17:55:22,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:55:22,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 17:55:22,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368934102] [2020-10-23 17:55:22,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 17:55:22,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 17:55:22,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554419787] [2020-10-23 17:55:22,778 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 17:55:22,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 17:55:22,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 17:55:22,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 17:55:22,800 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 4 states. [2020-10-23 17:55:23,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 17:55:23,092 INFO L93 Difference]: Finished difference Result 91 states and 130 transitions. [2020-10-23 17:55:23,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 17:55:23,096 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-10-23 17:55:23,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 17:55:23,111 INFO L225 Difference]: With dead ends: 91 [2020-10-23 17:55:23,111 INFO L226 Difference]: Without dead ends: 44 [2020-10-23 17:55:23,117 INFO L677 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 [2020-10-23 17:55:23,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-23 17:55:23,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-10-23 17:55:23,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-23 17:55:23,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 58 transitions. [2020-10-23 17:55:23,170 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 58 transitions. Word has length 24 [2020-10-23 17:55:23,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 17:55:23,171 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 58 transitions. [2020-10-23 17:55:23,171 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 17:55:23,171 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 58 transitions. [2020-10-23 17:55:23,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-23 17:55:23,173 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 17:55:23,173 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] [2020-10-23 17:55:23,173 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 17:55:23,174 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 17:55:23,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 17:55:23,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1160529513, now seen corresponding path program 1 times [2020-10-23 17:55:23,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 17:55:23,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574088365] [2020-10-23 17:55:23,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 17:55:23,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 17:55:23,239 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 17:55:23,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 17:55:23,302 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 17:55:23,334 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-23 17:55:23,334 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 17:55:23,336 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 17:55:23,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 05:55:23 BoogieIcfgContainer [2020-10-23 17:55:23,383 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 17:55:23,386 INFO L168 Benchmark]: Toolchain (without parser) took 2025.69 ms. Allocated memory is still 151.0 MB. Free memory was 125.6 MB in the beginning and 70.6 MB in the end (delta: 55.1 MB). Peak memory consumption was 54.3 MB. Max. memory is 8.0 GB. [2020-10-23 17:55:23,387 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 151.0 MB. Free memory was 123.7 MB in the beginning and 123.7 MB in the end (delta: 74.9 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 17:55:23,389 INFO L168 Benchmark]: CACSL2BoogieTranslator took 298.94 ms. Allocated memory is still 151.0 MB. Free memory was 125.1 MB in the beginning and 114.5 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-23 17:55:23,391 INFO L168 Benchmark]: Boogie Preprocessor took 45.59 ms. Allocated memory is still 151.0 MB. Free memory was 114.5 MB in the beginning and 112.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-23 17:55:23,393 INFO L168 Benchmark]: RCFGBuilder took 535.53 ms. Allocated memory is still 151.0 MB. Free memory was 112.5 MB in the beginning and 125.6 MB in the end (delta: -13.1 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2020-10-23 17:55:23,396 INFO L168 Benchmark]: TraceAbstraction took 1130.60 ms. Allocated memory is still 151.0 MB. Free memory was 125.1 MB in the beginning and 70.6 MB in the end (delta: 54.5 MB). Peak memory consumption was 54.5 MB. Max. memory is 8.0 GB. [2020-10-23 17:55:23,404 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 151.0 MB. Free memory was 123.7 MB in the beginning and 123.7 MB in the end (delta: 74.9 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 298.94 ms. Allocated memory is still 151.0 MB. Free memory was 125.1 MB in the beginning and 114.5 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 45.59 ms. Allocated memory is still 151.0 MB. Free memory was 114.5 MB in the beginning and 112.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 535.53 ms. Allocated memory is still 151.0 MB. Free memory was 112.5 MB in the beginning and 125.6 MB in the end (delta: -13.1 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1130.60 ms. Allocated memory is still 151.0 MB. Free memory was 125.1 MB in the beginning and 70.6 MB in the end (delta: 54.5 MB). Peak memory consumption was 54.5 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 shiftRight at line 43, overapproximation of bitwiseOr at line 44, overapproximation of someBinaryArithmeticDOUBLEoperation at line 92, overapproximation of bitwiseAnd at line 30, overapproximation of someBinaryDOUBLEComparisonOperation at line 17. Possible FailurePath: [L19] static const double huge_ceil = 1.0e300; VAL [\old(huge_ceil)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000003, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L92] double x = 0.0 / 0.0; VAL [huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L93] CALL, EXPR ceil_double(x) VAL [\old(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000013, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L22] __int32_t i0, i1, j0; [L23] __uint32_t i, j; VAL [\old(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000013, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000013] [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)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000013, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=-2, i1=-1, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000013] [L31] COND TRUE j0 < 20 VAL [\old(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000013, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=-2, i1=-1, j0=0, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000013] [L32] COND FALSE !(j0 < 0) [L43] i = (0x000fffff) >> j0 VAL [\old(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000013, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=-2, i1=-1, j0=0, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000013] [L44] COND TRUE ((i0 & i) | i1) == 0 [L45] return x; VAL [\old(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000013, \result=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000013, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=-2, i1=-1, j0=0, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000013] [L93] RET, EXPR ceil_double(x) VAL [ceil_double(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000013, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000013] [L93] double res = ceil_double(x); [L96] CALL, EXPR isnan_double(res) VAL [\old(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000013, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L17] return x != x; VAL [\old(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000013, \result=0, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000013] [L96] RET, EXPR isnan_double(res) VAL [huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, isnan_double(res)=0, res=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000013, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000013] [L96] COND TRUE !isnan_double(res) [L97] CALL reach_error() VAL [huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L3] __assert_fail("0", "double_req_bl_1091.c", 3, "reach_error") VAL [huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 60 SDtfs, 10 SDslu, 50 SDs, 0 SdLazy, 56 SolverSat, 8 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=51occurred 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, 0.2s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 1564 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...