/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_1031.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 17:55:06,175 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 17:55:06,184 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 17:55:06,243 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 17:55:06,243 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 17:55:06,247 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 17:55:06,252 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 17:55:06,260 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 17:55:06,264 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 17:55:06,272 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 17:55:06,273 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 17:55:06,275 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 17:55:06,276 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 17:55:06,280 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 17:55:06,282 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 17:55:06,284 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 17:55:06,285 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 17:55:06,289 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 17:55:06,298 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 17:55:06,306 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 17:55:06,309 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 17:55:06,311 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 17:55:06,312 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 17:55:06,315 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 17:55:06,325 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 17:55:06,339 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 17:55:06,340 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 17:55:06,341 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 17:55:06,342 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 17:55:06,420 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 17:55:06,421 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 17:55:06,425 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-23 17:55:06,425 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-23 17:55:06,425 INFO L138 SettingsManager]: * Use SBE=true [2020-10-23 17:55:06,425 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 17:55:06,426 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 17:55:06,426 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 17:55:06,426 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 17:55:06,427 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 17:55:06,428 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 17:55:06,428 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 17:55:06,428 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 17:55:06,428 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 17:55:06,428 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 17:55:06,429 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 17:55:06,429 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 17:55:06,429 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 17:55:06,429 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-23 17:55:06,429 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 17:55:06,430 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 17:55:06,430 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 17:55:06,430 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 17:55:06,431 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-23 17:55:06,431 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-23 17:55:06,431 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-23 17:55:06,431 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-23 17:55:06,431 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 17:55:06,432 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-23 17:55:06,432 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 17:55:06,865 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 17:55:06,902 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 17:55:06,905 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 17:55:06,907 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 17:55:06,907 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 17:55:06,908 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1031.c [2020-10-23 17:55:06,997 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e92402c1f/e40bdd2bee784ebea7c9f4a71e5d4385/FLAG829619106 [2020-10-23 17:55:07,671 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 17:55:07,672 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1031.c [2020-10-23 17:55:07,681 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e92402c1f/e40bdd2bee784ebea7c9f4a71e5d4385/FLAG829619106 [2020-10-23 17:55:08,003 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e92402c1f/e40bdd2bee784ebea7c9f4a71e5d4385 [2020-10-23 17:55:08,006 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 17:55:08,016 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 17:55:08,018 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 17:55:08,019 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 17:55:08,028 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 17:55:08,029 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 05:55:08" (1/1) ... [2020-10-23 17:55:08,034 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ae22405 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:08, skipping insertion in model container [2020-10-23 17:55:08,034 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 05:55:08" (1/1) ... [2020-10-23 17:55:08,043 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 17:55:08,066 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 17:55:08,248 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 17:55:08,259 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 17:55:08,295 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 17:55:08,317 INFO L208 MainTranslator]: Completed translation [2020-10-23 17:55:08,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:08 WrapperNode [2020-10-23 17:55:08,319 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 17:55:08,321 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 17:55:08,321 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 17:55:08,321 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 17:55:08,337 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:08" (1/1) ... [2020-10-23 17:55:08,339 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:08" (1/1) ... [2020-10-23 17:55:08,363 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:08" (1/1) ... [2020-10-23 17:55:08,364 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:08" (1/1) ... [2020-10-23 17:55:08,391 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:08" (1/1) ... [2020-10-23 17:55:08,401 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:08" (1/1) ... [2020-10-23 17:55:08,409 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:08" (1/1) ... [2020-10-23 17:55:08,415 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 17:55:08,418 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 17:55:08,419 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 17:55:08,419 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 17:55:08,420 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:08" (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 17:55:08,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 17:55:08,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 17:55:08,509 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 17:55:08,509 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-10-23 17:55:08,509 INFO L138 BoogieDeclarations]: Found implementation of procedure round_double [2020-10-23 17:55:08,510 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 17:55:08,510 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 17:55:08,510 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 17:55:08,510 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 17:55:08,510 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 17:55:08,511 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-10-23 17:55:08,511 INFO L130 BoogieDeclarations]: Found specification of procedure round_double [2020-10-23 17:55:08,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-23 17:55:08,511 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 17:55:08,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 17:55:08,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 17:55:08,512 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-23 17:55:08,512 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 17:55:08,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 17:55:08,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 17:55:08,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 17:55:09,220 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 17:55:09,221 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-23 17:55:09,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 05:55:09 BoogieIcfgContainer [2020-10-23 17:55:09,223 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 17:55:09,225 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 17:55:09,225 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 17:55:09,231 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 17:55:09,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 05:55:08" (1/3) ... [2020-10-23 17:55:09,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3db6595 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 05:55:09, skipping insertion in model container [2020-10-23 17:55:09,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:08" (2/3) ... [2020-10-23 17:55:09,233 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3db6595 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 05:55:09, skipping insertion in model container [2020-10-23 17:55:09,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 05:55:09" (3/3) ... [2020-10-23 17:55:09,234 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1031.c [2020-10-23 17:55:09,247 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-23 17:55:09,252 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 17:55:09,269 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 17:55:09,300 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 17:55:09,300 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 17:55:09,300 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-23 17:55:09,300 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 17:55:09,301 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 17:55:09,301 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 17:55:09,301 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 17:55:09,301 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 17:55:09,320 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-10-23 17:55:09,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-23 17:55:09,327 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 17:55:09,328 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 17:55:09,329 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 17:55:09,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 17:55:09,336 INFO L82 PathProgramCache]: Analyzing trace with hash 1518435197, now seen corresponding path program 1 times [2020-10-23 17:55:09,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 17:55:09,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070093925] [2020-10-23 17:55:09,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 17:55:09,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:55:09,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 17:55:09,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:55:09,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 17:55:09,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:55:09,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-23 17:55:09,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:55:09,691 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 17:55:09,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070093925] [2020-10-23 17:55:09,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 17:55:09,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 17:55:09,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427450546] [2020-10-23 17:55:09,700 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 17:55:09,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 17:55:09,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 17:55:09,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 17:55:09,736 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 4 states. [2020-10-23 17:55:10,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 17:55:10,218 INFO L93 Difference]: Finished difference Result 75 states and 100 transitions. [2020-10-23 17:55:10,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 17:55:10,221 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-10-23 17:55:10,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 17:55:10,234 INFO L225 Difference]: With dead ends: 75 [2020-10-23 17:55:10,235 INFO L226 Difference]: Without dead ends: 36 [2020-10-23 17:55:10,242 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-23 17:55:10,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-23 17:55:10,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-10-23 17:55:10,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-23 17:55:10,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2020-10-23 17:55:10,313 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 24 [2020-10-23 17:55:10,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 17:55:10,314 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2020-10-23 17:55:10,314 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 17:55:10,314 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2020-10-23 17:55:10,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-23 17:55:10,316 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 17:55:10,317 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 17:55:10,317 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 17:55:10,318 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 17:55:10,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 17:55:10,320 INFO L82 PathProgramCache]: Analyzing trace with hash -313897119, now seen corresponding path program 1 times [2020-10-23 17:55:10,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 17:55:10,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397942307] [2020-10-23 17:55:10,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 17:55:10,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 17:55:10,454 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 17:55:10,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 17:55:10,523 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 17:55:10,558 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-23 17:55:10,558 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 17:55:10,560 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 17:55:10,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 05:55:10 BoogieIcfgContainer [2020-10-23 17:55:10,601 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 17:55:10,604 INFO L168 Benchmark]: Toolchain (without parser) took 2594.54 ms. Allocated memory is still 151.0 MB. Free memory was 126.7 MB in the beginning and 80.3 MB in the end (delta: 46.4 MB). Peak memory consumption was 45.8 MB. Max. memory is 8.0 GB. [2020-10-23 17:55:10,605 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 126.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 17:55:10,606 INFO L168 Benchmark]: CACSL2BoogieTranslator took 301.59 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 115.4 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-23 17:55:10,607 INFO L168 Benchmark]: Boogie Preprocessor took 94.63 ms. Allocated memory is still 151.0 MB. Free memory was 115.4 MB in the beginning and 113.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-23 17:55:10,608 INFO L168 Benchmark]: RCFGBuilder took 804.39 ms. Allocated memory is still 151.0 MB. Free memory was 113.6 MB in the beginning and 130.7 MB in the end (delta: -17.1 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. [2020-10-23 17:55:10,609 INFO L168 Benchmark]: TraceAbstraction took 1376.82 ms. Allocated memory is still 151.0 MB. Free memory was 130.1 MB in the beginning and 80.3 MB in the end (delta: 49.8 MB). Peak memory consumption was 49.3 MB. Max. memory is 8.0 GB. [2020-10-23 17:55:10,613 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 126.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 301.59 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 115.4 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 94.63 ms. Allocated memory is still 151.0 MB. Free memory was 115.4 MB in the beginning and 113.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 804.39 ms. Allocated memory is still 151.0 MB. Free memory was 113.6 MB in the beginning and 130.7 MB in the end (delta: -17.1 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1376.82 ms. Allocated memory is still 151.0 MB. Free memory was 130.1 MB in the beginning and 80.3 MB in the end (delta: 49.8 MB). Peak memory consumption was 49.3 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 shiftRight at line 36, overapproximation of someBinaryArithmeticDOUBLEoperation at line 76, overapproximation of bitwiseAnd at line 37, overapproximation of someBinaryDOUBLEComparisonOperation at line 17. Possible FailurePath: [L76] double x = 0.0 / 0.0; [L77] CALL, EXPR round_double(x) VAL [\old(x)=4294967297] [L20] __int32_t msw, exponent_less_1023; [L21] __uint32_t lsw; VAL [\old(x)=4294967297, x=4294967297] [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (msw) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (lsw) = ew_u.parts.lsw [L28] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 VAL [\old(x)=4294967297, exponent_less_1023=0, lsw=0, msw=-1, x=4294967297] [L29] COND TRUE exponent_less_1023 < 20 VAL [\old(x)=4294967297, exponent_less_1023=0, lsw=0, msw=-1, x=4294967297] [L30] COND FALSE !(exponent_less_1023 < 0) [L36] __uint32_t exponent_mask = 0x000fffff >> exponent_less_1023; VAL [\old(x)=4294967297, exponent_less_1023=0, lsw=0, msw=-1, x=4294967297] [L37] COND TRUE (msw & exponent_mask) == 0 && lsw == 0 [L38] return x; VAL [\old(x)=4294967297, \result=4294967297, exponent_less_1023=0, lsw=0, msw=-1, x=4294967297] [L77] RET, EXPR round_double(x) VAL [round_double(x)=4294967297, x=4294967297] [L77] double res = round_double(x); [L80] CALL, EXPR isnan_double(res) VAL [\old(x)=4294967297] [L17] return x != x; VAL [\old(x)=4294967297, \result=0, x=4294967297] [L80] RET, EXPR isnan_double(res) VAL [isnan_double(res)=0, res=4294967297, x=4294967297] [L80] COND TRUE !isnan_double(res) [L81] CALL reach_error() [L3] __assert_fail("0", "double_req_bl_1031.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 43 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 45 SDtfs, 10 SDslu, 35 SDs, 0 SdLazy, 41 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred 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, 0.2s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 1495 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...