/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_1131a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 15:47:19,323 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 15:47:19,326 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 15:47:19,365 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 15:47:19,366 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 15:47:19,367 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 15:47:19,369 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 15:47:19,371 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 15:47:19,384 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 15:47:19,386 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 15:47:19,387 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 15:47:19,388 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 15:47:19,389 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 15:47:19,390 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 15:47:19,391 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 15:47:19,393 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 15:47:19,394 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 15:47:19,395 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 15:47:19,397 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 15:47:19,399 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 15:47:19,401 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 15:47:19,402 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 15:47:19,403 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 15:47:19,404 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 15:47:19,408 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 15:47:19,408 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 15:47:19,408 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 15:47:19,409 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 15:47:19,410 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 15:47:19,411 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 15:47:19,412 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 15:47:19,412 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 15:47:19,413 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 15:47:19,414 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 15:47:19,415 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 15:47:19,416 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 15:47:19,417 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 15:47:19,417 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 15:47:19,417 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 15:47:19,418 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 15:47:19,419 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 15:47:19,420 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 [2021-02-21 15:47:19,447 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 15:47:19,448 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 15:47:19,449 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-21 15:47:19,450 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-21 15:47:19,450 INFO L138 SettingsManager]: * Use SBE=true [2021-02-21 15:47:19,450 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 15:47:19,450 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 15:47:19,451 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 15:47:19,451 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 15:47:19,451 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 15:47:19,451 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 15:47:19,452 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 15:47:19,452 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 15:47:19,452 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 15:47:19,452 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 15:47:19,453 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 15:47:19,453 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 15:47:19,453 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 15:47:19,453 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-21 15:47:19,454 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 15:47:19,454 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 15:47:19,454 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 15:47:19,454 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-21 15:47:19,455 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-21 15:47:19,455 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-21 15:47:19,455 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-21 15:47:19,455 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 15:47:19,456 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-21 15:47:19,456 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 15:47:19,809 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 15:47:19,844 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 15:47:19,847 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 15:47:19,849 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 15:47:19,849 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 15:47:19,850 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c [2021-02-21 15:47:19,943 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24d7dfc90/e841b457e3eb48f9be6adc10293ecb91/FLAG81f932a29 [2021-02-21 15:47:20,565 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 15:47:20,565 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c [2021-02-21 15:47:20,576 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24d7dfc90/e841b457e3eb48f9be6adc10293ecb91/FLAG81f932a29 [2021-02-21 15:47:20,926 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24d7dfc90/e841b457e3eb48f9be6adc10293ecb91 [2021-02-21 15:47:20,929 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 15:47:20,945 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 15:47:20,949 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 15:47:20,949 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 15:47:20,954 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 15:47:20,956 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 03:47:20" (1/1) ... [2021-02-21 15:47:20,958 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a40436e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:20, skipping insertion in model container [2021-02-21 15:47:20,958 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 03:47:20" (1/1) ... [2021-02-21 15:47:20,968 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 15:47:21,011 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 15:47:21,323 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c[4189,4202] [2021-02-21 15:47:21,326 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 15:47:21,334 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 15:47:21,387 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c[4189,4202] [2021-02-21 15:47:21,387 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 15:47:21,414 INFO L208 MainTranslator]: Completed translation [2021-02-21 15:47:21,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:21 WrapperNode [2021-02-21 15:47:21,417 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 15:47:21,419 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 15:47:21,419 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 15:47:21,419 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 15:47:21,445 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:21" (1/1) ... [2021-02-21 15:47:21,445 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:21" (1/1) ... [2021-02-21 15:47:21,474 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:21" (1/1) ... [2021-02-21 15:47:21,475 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:21" (1/1) ... [2021-02-21 15:47:21,511 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:21" (1/1) ... [2021-02-21 15:47:21,529 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:21" (1/1) ... [2021-02-21 15:47:21,534 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:21" (1/1) ... [2021-02-21 15:47:21,546 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 15:47:21,548 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 15:47:21,548 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 15:47:21,548 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 15:47:21,552 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:21" (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 [2021-02-21 15:47:21,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 15:47:21,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 15:47:21,676 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 15:47:21,677 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2021-02-21 15:47:21,677 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2021-02-21 15:47:21,677 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2021-02-21 15:47:21,677 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 15:47:21,678 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 15:47:21,678 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 15:47:21,679 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 15:47:21,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 15:47:21,679 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2021-02-21 15:47:21,680 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2021-02-21 15:47:21,680 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2021-02-21 15:47:21,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-21 15:47:21,683 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 15:47:21,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 15:47:21,684 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-21 15:47:21,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 15:47:21,684 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2021-02-21 15:47:21,685 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 15:47:21,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 15:47:21,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 15:47:21,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-02-21 15:47:21,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 15:47:22,355 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 15:47:22,356 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-02-21 15:47:22,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 03:47:22 BoogieIcfgContainer [2021-02-21 15:47:22,358 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 15:47:22,360 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 15:47:22,360 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 15:47:22,363 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 15:47:22,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 03:47:20" (1/3) ... [2021-02-21 15:47:22,364 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f54c4ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 03:47:22, skipping insertion in model container [2021-02-21 15:47:22,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:21" (2/3) ... [2021-02-21 15:47:22,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f54c4ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 03:47:22, skipping insertion in model container [2021-02-21 15:47:22,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 03:47:22" (3/3) ... [2021-02-21 15:47:22,366 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131a.c [2021-02-21 15:47:22,373 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-21 15:47:22,379 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 15:47:22,398 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 15:47:22,425 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 15:47:22,425 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 15:47:22,425 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-21 15:47:22,425 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 15:47:22,426 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 15:47:22,426 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 15:47:22,426 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 15:47:22,426 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 15:47:22,444 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2021-02-21 15:47:22,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-02-21 15:47:22,451 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 15:47:22,452 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] [2021-02-21 15:47:22,452 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 15:47:22,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 15:47:22,459 INFO L82 PathProgramCache]: Analyzing trace with hash -1327737902, now seen corresponding path program 1 times [2021-02-21 15:47:22,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 15:47:22,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258465187] [2021-02-21 15:47:22,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 15:47:22,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:47:22,650 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:22,651 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:22,652 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:22,653 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:22,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 15:47:22,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:47:22,756 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:22,757 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:22,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-21 15:47:22,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:47:22,808 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:22,809 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:22,810 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:22,811 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:22,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-21 15:47:22,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:47:22,826 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:22,827 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:22,828 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:22,829 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:22,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 15:47:22,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258465187] [2021-02-21 15:47:22,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 15:47:22,837 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 15:47:22,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254666159] [2021-02-21 15:47:22,844 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 15:47:22,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 15:47:22,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 15:47:22,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 15:47:22,861 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 4 states. [2021-02-21 15:47:23,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 15:47:23,218 INFO L93 Difference]: Finished difference Result 138 states and 227 transitions. [2021-02-21 15:47:23,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 15:47:23,220 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2021-02-21 15:47:23,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 15:47:23,231 INFO L225 Difference]: With dead ends: 138 [2021-02-21 15:47:23,231 INFO L226 Difference]: Without dead ends: 68 [2021-02-21 15:47:23,235 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-21 15:47:23,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-02-21 15:47:23,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2021-02-21 15:47:23,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2021-02-21 15:47:23,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 94 transitions. [2021-02-21 15:47:23,286 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 94 transitions. Word has length 25 [2021-02-21 15:47:23,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 15:47:23,287 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 94 transitions. [2021-02-21 15:47:23,287 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 15:47:23,287 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 94 transitions. [2021-02-21 15:47:23,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-02-21 15:47:23,289 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 15:47:23,289 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 15:47:23,289 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 15:47:23,290 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 15:47:23,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 15:47:23,290 INFO L82 PathProgramCache]: Analyzing trace with hash 1607479198, now seen corresponding path program 1 times [2021-02-21 15:47:23,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 15:47:23,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126108683] [2021-02-21 15:47:23,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 15:47:23,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 15:47:23,471 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 15:47:23,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 15:47:23,599 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 15:47:23,646 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-21 15:47:23,647 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 15:47:23,648 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 15:47:23,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 03:47:23 BoogieIcfgContainer [2021-02-21 15:47:23,688 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 15:47:23,690 INFO L168 Benchmark]: Toolchain (without parser) took 2757.48 ms. Allocated memory was 158.3 MB in the beginning and 190.8 MB in the end (delta: 32.5 MB). Free memory was 132.1 MB in the beginning and 159.1 MB in the end (delta: -27.0 MB). Peak memory consumption was 6.9 MB. Max. memory is 8.0 GB. [2021-02-21 15:47:23,691 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 158.3 MB. Free memory is still 129.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 15:47:23,691 INFO L168 Benchmark]: CACSL2BoogieTranslator took 468.87 ms. Allocated memory is still 158.3 MB. Free memory was 131.0 MB in the beginning and 118.1 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-02-21 15:47:23,692 INFO L168 Benchmark]: Boogie Preprocessor took 128.23 ms. Allocated memory is still 158.3 MB. Free memory was 118.1 MB in the beginning and 115.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-21 15:47:23,693 INFO L168 Benchmark]: RCFGBuilder took 810.28 ms. Allocated memory is still 158.3 MB. Free memory was 115.5 MB in the beginning and 116.6 MB in the end (delta: -1.1 MB). Peak memory consumption was 14.3 MB. Max. memory is 8.0 GB. [2021-02-21 15:47:23,694 INFO L168 Benchmark]: TraceAbstraction took 1328.42 ms. Allocated memory was 158.3 MB in the beginning and 190.8 MB in the end (delta: 32.5 MB). Free memory was 116.1 MB in the beginning and 159.1 MB in the end (delta: -43.0 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 15:47:23,698 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 158.3 MB. Free memory is still 129.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 468.87 ms. Allocated memory is still 158.3 MB. Free memory was 131.0 MB in the beginning and 118.1 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 128.23 ms. Allocated memory is still 158.3 MB. Free memory was 118.1 MB in the beginning and 115.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 810.28 ms. Allocated memory is still 158.3 MB. Free memory was 115.5 MB in the beginning and 116.6 MB in the end (delta: -1.1 MB). Peak memory consumption was 14.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1328.42 ms. Allocated memory was 158.3 MB in the beginning and 190.8 MB in the end (delta: 32.5 MB). Free memory was 116.1 MB in the beginning and 159.1 MB in the end (delta: -43.0 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 191]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 46, overapproximation of someUnaryDOUBLEoperation at line 22, overapproximation of someBinaryArithmeticDOUBLEoperation at line 47, overapproximation of bitwiseAnd at line 41, overapproximation of someBinaryDOUBLEComparisonOperation at line 190, overapproximation of bitwiseXor at line 42. Possible FailurePath: [L20-L23] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [\old(one_fmod)=9223372032558759952, \old(Zero_fmod)=9223372032558759950, \old(Zero_fmod)=9223372032558759944, one_fmod=1, Zero_fmod={5:0}] [L182] double y = 1.0 / 0.0; [L183] double x = __VERIFIER_nondet_double(); [L185] CALL isfinite_double(x) VAL [\old(x)=9223372032558759940, one_fmod=1, Zero_fmod={5:0}] [L166] __int32_t hx; VAL [\old(x)=9223372032558759940, one_fmod=1, x=9223372032558759940, Zero_fmod={5:0}] [L168] ieee_double_shape_type gh_u; [L169] gh_u.value = (x) [L170] EXPR gh_u.parts.msw [L170] (hx) = gh_u.parts.msw [L172] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); VAL [\old(x)=9223372032558759940, \result=-3, hx=-2, one_fmod=1, x=9223372032558759940, Zero_fmod={5:0}] [L185] RET isfinite_double(x) VAL [isfinite_double(x)=-3, one_fmod=1, x=9223372032558759940, Zero_fmod={5:0}] [L185] COND TRUE isfinite_double(x) [L187] CALL, EXPR fmod_double(x, y) VAL [\old(x)=9223372032558759940, \old(y)=9223372032558759953, one_fmod=1, Zero_fmod={5:0}] [L26] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L27] __uint32_t lx, ly, lz; VAL [\old(x)=9223372032558759940, \old(y)=9223372032558759953, one_fmod=1, x=9223372032558759940, y=9223372032558759953, Zero_fmod={5:0}] [L30] ieee_double_shape_type ew_u; [L31] ew_u.value = (x) [L32] EXPR ew_u.parts.msw [L32] (hx) = ew_u.parts.msw [L33] EXPR ew_u.parts.lsw [L33] (lx) = ew_u.parts.lsw [L36] ieee_double_shape_type ew_u; [L37] ew_u.value = (y) [L38] EXPR ew_u.parts.msw [L38] (hy) = ew_u.parts.msw [L39] EXPR ew_u.parts.lsw [L39] (ly) = ew_u.parts.lsw [L41] sx = hx & 0x80000000 [L42] hx ^= sx [L43] hy &= 0x7fffffff VAL [\old(x)=9223372032558759940, \old(y)=9223372032558759953, lx=9223372032558759951, ly=9223372032558759938, one_fmod=1, sx=14, x=9223372032558759940, y=9223372032558759953, Zero_fmod={5:0}] [L45-L46] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L47] return (x * y) / (x * y); VAL [\old(x)=9223372032558759940, \old(y)=9223372032558759953, hx=2146435072, lx=9223372032558759951, ly=9223372032558759938, one_fmod=1, sx=14, x=9223372032558759940, y=9223372032558759953, Zero_fmod={5:0}] [L187] RET, EXPR fmod_double(x, y) VAL [fmod_double(x, y)=9223372032558759942, one_fmod=1, x=9223372032558759940, y=9223372032558759953, Zero_fmod={5:0}] [L187] double res = fmod_double(x, y); [L190] COND TRUE res != x VAL [one_fmod=1, res=9223372032558759942, x=9223372032558759940, y=9223372032558759953, Zero_fmod={5:0}] [L191] reach_error() VAL [one_fmod=1, res=9223372032558759942, x=9223372032558759940, y=9223372032558759953, Zero_fmod={5:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 79 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 97 SDtfs, 6 SDslu, 87 SDs, 0 SdLazy, 102 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred 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, 0.2s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 2088 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...