/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_0720.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 17:54:58,999 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 17:54:59,003 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 17:54:59,063 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 17:54:59,064 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 17:54:59,069 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 17:54:59,073 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 17:54:59,082 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 17:54:59,086 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 17:54:59,093 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 17:54:59,126 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 17:54:59,131 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 17:54:59,131 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 17:54:59,136 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 17:54:59,141 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 17:54:59,150 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 17:54:59,156 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 17:54:59,157 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 17:54:59,160 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 17:54:59,167 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 17:54:59,173 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 17:54:59,175 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 17:54:59,176 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 17:54:59,178 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 17:54:59,181 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 17:54:59,192 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 17:54:59,193 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 17:54:59,194 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 17:54:59,195 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 17:54:59,222 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 17:54:59,223 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 17:54:59,224 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-23 17:54:59,225 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-23 17:54:59,225 INFO L138 SettingsManager]: * Use SBE=true [2020-10-23 17:54:59,225 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 17:54:59,225 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 17:54:59,226 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 17:54:59,226 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 17:54:59,226 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 17:54:59,226 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 17:54:59,226 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 17:54:59,227 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 17:54:59,227 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 17:54:59,227 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 17:54:59,227 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 17:54:59,228 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 17:54:59,228 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 17:54:59,228 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-23 17:54:59,228 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 17:54:59,229 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 17:54:59,229 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 17:54:59,229 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 17:54:59,229 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-23 17:54:59,230 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-23 17:54:59,230 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-23 17:54:59,230 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-23 17:54:59,230 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 17:54:59,230 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-23 17:54:59,231 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 17:54:59,646 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 17:54:59,674 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 17:54:59,677 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 17:54:59,679 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 17:54:59,679 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 17:54:59,680 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0720.c [2020-10-23 17:54:59,785 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/360d15371/c8a4810f336f4c71a8c7a5b509198408/FLAG8fc77bbf5 [2020-10-23 17:55:00,435 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 17:55:00,436 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_0720.c [2020-10-23 17:55:00,445 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/360d15371/c8a4810f336f4c71a8c7a5b509198408/FLAG8fc77bbf5 [2020-10-23 17:55:00,763 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/360d15371/c8a4810f336f4c71a8c7a5b509198408 [2020-10-23 17:55:00,766 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 17:55:00,773 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 17:55:00,774 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 17:55:00,774 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 17:55:00,778 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 17:55:00,779 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 05:55:00" (1/1) ... [2020-10-23 17:55:00,782 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2305d4dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:00, skipping insertion in model container [2020-10-23 17:55:00,782 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 05:55:00" (1/1) ... [2020-10-23 17:55:00,790 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 17:55:00,811 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 17:55:01,020 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 17:55:01,038 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 17:55:01,137 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 17:55:01,201 INFO L208 MainTranslator]: Completed translation [2020-10-23 17:55:01,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:01 WrapperNode [2020-10-23 17:55:01,201 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 17:55:01,206 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 17:55:01,206 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 17:55:01,206 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 17:55:01,251 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:01" (1/1) ... [2020-10-23 17:55:01,254 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:01" (1/1) ... [2020-10-23 17:55:01,286 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:01" (1/1) ... [2020-10-23 17:55:01,286 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:01" (1/1) ... [2020-10-23 17:55:01,322 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:01" (1/1) ... [2020-10-23 17:55:01,342 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:01" (1/1) ... [2020-10-23 17:55:01,348 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:01" (1/1) ... [2020-10-23 17:55:01,360 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 17:55:01,361 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 17:55:01,362 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 17:55:01,364 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 17:55:01,365 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:01" (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 17:55:01,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 17:55:01,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 17:55:01,479 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 17:55:01,480 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-10-23 17:55:01,480 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrt [2020-10-23 17:55:01,481 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 17:55:01,481 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 17:55:01,482 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 17:55:01,482 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 17:55:01,482 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 17:55:01,483 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-10-23 17:55:01,483 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-10-23 17:55:01,484 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrt [2020-10-23 17:55:01,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-23 17:55:01,485 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 17:55:01,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 17:55:01,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 17:55:01,487 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-23 17:55:01,487 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 17:55:01,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 17:55:01,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 17:55:01,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 17:55:02,269 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 17:55:02,270 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-23 17:55:02,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 05:55:02 BoogieIcfgContainer [2020-10-23 17:55:02,274 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 17:55:02,279 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 17:55:02,279 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 17:55:02,288 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 17:55:02,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 05:55:00" (1/3) ... [2020-10-23 17:55:02,290 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73e8e6b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 05:55:02, skipping insertion in model container [2020-10-23 17:55:02,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:01" (2/3) ... [2020-10-23 17:55:02,291 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73e8e6b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 05:55:02, skipping insertion in model container [2020-10-23 17:55:02,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 05:55:02" (3/3) ... [2020-10-23 17:55:02,293 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0720.c [2020-10-23 17:55:02,306 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-23 17:55:02,311 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 17:55:02,323 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 17:55:02,353 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 17:55:02,353 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 17:55:02,353 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-23 17:55:02,354 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 17:55:02,354 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 17:55:02,354 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 17:55:02,354 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 17:55:02,354 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 17:55:02,371 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states. [2020-10-23 17:55:02,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-23 17:55:02,378 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 17:55:02,379 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] [2020-10-23 17:55:02,380 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 17:55:02,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 17:55:02,387 INFO L82 PathProgramCache]: Analyzing trace with hash 219385172, now seen corresponding path program 1 times [2020-10-23 17:55:02,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 17:55:02,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628236487] [2020-10-23 17:55:02,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 17:55:02,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:55:02,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 17:55:02,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:55:02,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 17:55:02,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:55:02,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-23 17:55:02,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:55:02,712 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 17:55:02,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628236487] [2020-10-23 17:55:02,714 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 17:55:02,715 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 17:55:02,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253046375] [2020-10-23 17:55:02,740 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 17:55:02,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 17:55:02,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 17:55:02,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 17:55:02,762 INFO L87 Difference]: Start difference. First operand 66 states. Second operand 4 states. [2020-10-23 17:55:03,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 17:55:03,118 INFO L93 Difference]: Finished difference Result 121 states and 178 transitions. [2020-10-23 17:55:03,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 17:55:03,121 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-10-23 17:55:03,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 17:55:03,135 INFO L225 Difference]: With dead ends: 121 [2020-10-23 17:55:03,135 INFO L226 Difference]: Without dead ends: 59 [2020-10-23 17:55:03,139 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 17:55:03,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-23 17:55:03,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-10-23 17:55:03,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-23 17:55:03,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 78 transitions. [2020-10-23 17:55:03,195 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 78 transitions. Word has length 21 [2020-10-23 17:55:03,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 17:55:03,195 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 78 transitions. [2020-10-23 17:55:03,196 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 17:55:03,196 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 78 transitions. [2020-10-23 17:55:03,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-23 17:55:03,197 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 17:55:03,198 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] [2020-10-23 17:55:03,198 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 17:55:03,198 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 17:55:03,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 17:55:03,199 INFO L82 PathProgramCache]: Analyzing trace with hash 1674382266, now seen corresponding path program 1 times [2020-10-23 17:55:03,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 17:55:03,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674316378] [2020-10-23 17:55:03,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 17:55:03,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 17:55:03,299 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 17:55:03,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 17:55:03,358 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 17:55:03,392 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-23 17:55:03,393 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 17:55:03,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 17:55:03,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 05:55:03 BoogieIcfgContainer [2020-10-23 17:55:03,432 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 17:55:03,435 INFO L168 Benchmark]: Toolchain (without parser) took 2666.07 ms. Allocated memory is still 151.0 MB. Free memory was 130.0 MB in the beginning and 93.6 MB in the end (delta: 36.4 MB). Peak memory consumption was 35.9 MB. Max. memory is 8.0 GB. [2020-10-23 17:55:03,436 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory was 122.7 MB in the beginning and 122.7 MB in the end (delta: 71.7 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 17:55:03,437 INFO L168 Benchmark]: CACSL2BoogieTranslator took 427.75 ms. Allocated memory is still 151.0 MB. Free memory was 129.2 MB in the beginning and 134.5 MB in the end (delta: -5.3 MB). Peak memory consumption was 15.2 MB. Max. memory is 8.0 GB. [2020-10-23 17:55:03,438 INFO L168 Benchmark]: Boogie Preprocessor took 154.67 ms. Allocated memory is still 151.0 MB. Free memory was 134.5 MB in the beginning and 131.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-10-23 17:55:03,439 INFO L168 Benchmark]: RCFGBuilder took 912.92 ms. Allocated memory is still 151.0 MB. Free memory was 131.9 MB in the beginning and 104.4 MB in the end (delta: 27.5 MB). Peak memory consumption was 27.3 MB. Max. memory is 8.0 GB. [2020-10-23 17:55:03,440 INFO L168 Benchmark]: TraceAbstraction took 1153.31 ms. Allocated memory is still 151.0 MB. Free memory was 104.0 MB in the beginning and 93.6 MB in the end (delta: 10.4 MB). Peak memory consumption was 11.3 MB. Max. memory is 8.0 GB. [2020-10-23 17:55:03,444 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory was 122.7 MB in the beginning and 122.7 MB in the end (delta: 71.7 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 427.75 ms. Allocated memory is still 151.0 MB. Free memory was 129.2 MB in the beginning and 134.5 MB in the end (delta: -5.3 MB). Peak memory consumption was 15.2 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 154.67 ms. Allocated memory is still 151.0 MB. Free memory was 134.5 MB in the beginning and 131.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 912.92 ms. Allocated memory is still 151.0 MB. Free memory was 131.9 MB in the beginning and 104.4 MB in the end (delta: 27.5 MB). Peak memory consumption was 27.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1153.31 ms. Allocated memory is still 151.0 MB. Free memory was 104.0 MB in the beginning and 93.6 MB in the end (delta: 10.4 MB). Peak memory consumption was 11.3 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 20, overapproximation of someBinaryArithmeticDOUBLEoperation at line 38, overapproximation of bitwiseAnd at line 37. Possible FailurePath: [L22] static const double one_sqrt = 1.0, tiny_sqrt = 1.0e-300; VAL [\old(one_sqrt)=52, \old(tiny_sqrt)=61, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L141] double x = 0.0 / 0.0; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L143] CALL, EXPR __ieee754_sqrt(x) VAL [\old(x)=54, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L25] double z; [L26] __int32_t sign = 0x80000000; [L27] __uint32_t r, t1, s1, ix1, q1; [L28] __int32_t ix0, s0, q, m, t, i; VAL [\old(x)=54, one_sqrt=1, sign=-2147483648, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=54] [L31] ieee_double_shape_type ew_u; [L32] ew_u.value = (x) [L33] EXPR ew_u.parts.msw [L33] (ix0) = ew_u.parts.msw [L34] EXPR ew_u.parts.lsw [L34] (ix1) = ew_u.parts.lsw [L37] COND TRUE (ix0 & 0x7ff00000) == 0x7ff00000 [L38] return x * x + x; VAL [\old(x)=54, ix0=0, ix1=63, one_sqrt=1, sign=-2147483648, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=54] [L143] RET, EXPR __ieee754_sqrt(x) VAL [__ieee754_sqrt(x)=50, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=54] [L143] double res = __ieee754_sqrt(x); [L146] CALL, EXPR isnan_double(res) VAL [\old(x)=50, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L20] return x != x; VAL [\old(x)=50, \result=0, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=50] [L146] RET, EXPR isnan_double(res) VAL [isnan_double(res)=0, one_sqrt=1, res=50, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=54] [L146] COND TRUE !isnan_double(res) [L147] CALL reach_error() VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L3] __assert_fail("0", "double_req_bl_0720.c", 3, "reach_error") VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 66 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: 80 SDtfs, 10 SDslu, 70 SDs, 0 SdLazy, 76 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=66occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 43 NumberOfCodeBlocks, 43 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 1360 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...