/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_1130a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-06 21:57:28,985 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-06 21:57:28,990 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-06 21:57:29,044 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-06 21:57:29,045 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-06 21:57:29,049 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-06 21:57:29,052 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-06 21:57:29,060 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-06 21:57:29,063 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-06 21:57:29,069 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-06 21:57:29,070 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-06 21:57:29,072 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-06 21:57:29,072 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-06 21:57:29,075 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-06 21:57:29,077 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-06 21:57:29,078 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-06 21:57:29,079 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-06 21:57:29,082 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-06 21:57:29,086 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-06 21:57:29,092 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-06 21:57:29,094 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-06 21:57:29,095 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-06 21:57:29,098 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-06 21:57:29,099 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-06 21:57:29,108 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-06 21:57:29,109 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-06 21:57:29,109 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-06 21:57:29,110 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-06 21:57:29,110 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-06 21:57:29,113 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-06 21:57:29,113 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-06 21:57:29,114 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-06 21:57:29,115 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-06 21:57:29,116 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-06 21:57:29,117 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-06 21:57:29,118 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-06 21:57:29,119 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-06 21:57:29,119 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-06 21:57:29,119 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-06 21:57:29,120 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-06 21:57:29,121 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-06 21:57:29,122 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-06 21:57:29,186 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-06 21:57:29,186 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-06 21:57:29,191 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-06 21:57:29,191 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-06 21:57:29,191 INFO L138 SettingsManager]: * Use SBE=true [2020-11-06 21:57:29,192 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-06 21:57:29,192 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-06 21:57:29,192 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-06 21:57:29,192 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-06 21:57:29,192 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-06 21:57:29,193 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-06 21:57:29,193 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-06 21:57:29,194 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-06 21:57:29,194 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-06 21:57:29,194 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-06 21:57:29,194 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-06 21:57:29,195 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-06 21:57:29,195 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-06 21:57:29,195 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-06 21:57:29,195 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-06 21:57:29,196 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-06 21:57:29,196 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 21:57:29,196 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-06 21:57:29,196 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-06 21:57:29,196 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-06 21:57:29,197 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-06 21:57:29,197 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-06 21:57:29,197 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-06 21:57:29,198 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-06 21:57:29,198 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-06 21:57:29,660 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-06 21:57:29,691 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-06 21:57:29,694 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-06 21:57:29,696 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-06 21:57:29,697 INFO L275 PluginConnector]: CDTParser initialized [2020-11-06 21:57:29,698 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-11-06 21:57:29,787 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6cbcdb1bf/e225006dc625421886319bc513052dd4/FLAG5deef83d0 [2020-11-06 21:57:30,419 INFO L306 CDTParser]: Found 1 translation units. [2020-11-06 21:57:30,420 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-11-06 21:57:30,436 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6cbcdb1bf/e225006dc625421886319bc513052dd4/FLAG5deef83d0 [2020-11-06 21:57:30,773 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6cbcdb1bf/e225006dc625421886319bc513052dd4 [2020-11-06 21:57:30,776 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-06 21:57:30,784 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-06 21:57:30,789 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-06 21:57:30,789 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-06 21:57:30,793 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-06 21:57:30,795 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:57:30" (1/1) ... [2020-11-06 21:57:30,799 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@564377d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:30, skipping insertion in model container [2020-11-06 21:57:30,799 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:57:30" (1/1) ... [2020-11-06 21:57:30,809 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-06 21:57:30,852 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-06 21:57:31,119 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 21:57:31,136 INFO L203 MainTranslator]: Completed pre-run [2020-11-06 21:57:31,242 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 21:57:31,265 INFO L208 MainTranslator]: Completed translation [2020-11-06 21:57:31,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:31 WrapperNode [2020-11-06 21:57:31,266 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-06 21:57:31,267 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-06 21:57:31,268 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-06 21:57:31,268 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-06 21:57:31,284 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:31" (1/1) ... [2020-11-06 21:57:31,284 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:31" (1/1) ... [2020-11-06 21:57:31,298 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:31" (1/1) ... [2020-11-06 21:57:31,298 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:31" (1/1) ... [2020-11-06 21:57:31,336 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:31" (1/1) ... [2020-11-06 21:57:31,357 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:31" (1/1) ... [2020-11-06 21:57:31,362 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:31" (1/1) ... [2020-11-06 21:57:31,371 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-06 21:57:31,374 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-06 21:57:31,375 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-06 21:57:31,375 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-06 21:57:31,376 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:31" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 21:57:31,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-06 21:57:31,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-06 21:57:31,473 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-06 21:57:31,473 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-11-06 21:57:31,473 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-11-06 21:57:31,474 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-11-06 21:57:31,474 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-06 21:57:31,474 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-06 21:57:31,475 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-06 21:57:31,475 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-06 21:57:31,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-06 21:57:31,476 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-11-06 21:57:31,476 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-11-06 21:57:31,477 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-11-06 21:57:31,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-06 21:57:31,479 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-06 21:57:31,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-06 21:57:31,479 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-06 21:57:31,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-06 21:57:31,479 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-11-06 21:57:31,480 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-06 21:57:31,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-06 21:57:31,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-06 21:57:31,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-11-06 21:57:31,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-06 21:57:32,328 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-06 21:57:32,329 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-11-06 21:57:32,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:57:32 BoogieIcfgContainer [2020-11-06 21:57:32,331 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-06 21:57:32,333 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-06 21:57:32,333 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-06 21:57:32,336 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-06 21:57:32,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:57:30" (1/3) ... [2020-11-06 21:57:32,337 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60017056 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:57:32, skipping insertion in model container [2020-11-06 21:57:32,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:31" (2/3) ... [2020-11-06 21:57:32,338 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60017056 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:57:32, skipping insertion in model container [2020-11-06 21:57:32,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:57:32" (3/3) ... [2020-11-06 21:57:32,340 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1130a.c [2020-11-06 21:57:32,357 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-06 21:57:32,361 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-06 21:57:32,375 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-06 21:57:32,417 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-06 21:57:32,418 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-06 21:57:32,418 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-06 21:57:32,418 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-06 21:57:32,418 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-06 21:57:32,418 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-06 21:57:32,419 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-06 21:57:32,419 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-06 21:57:32,439 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states. [2020-11-06 21:57:32,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-06 21:57:32,446 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 21:57:32,447 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] [2020-11-06 21:57:32,447 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 21:57:32,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 21:57:32,454 INFO L82 PathProgramCache]: Analyzing trace with hash 1874786986, now seen corresponding path program 1 times [2020-11-06 21:57:32,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 21:57:32,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679662911] [2020-11-06 21:57:32,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 21:57:32,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:57:32,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 21:57:32,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:57:32,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-06 21:57:32,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:57:32,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 21:57:32,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679662911] [2020-11-06 21:57:32,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 21:57:32,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-06 21:57:32,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168399158] [2020-11-06 21:57:32,970 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-06 21:57:32,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 21:57:32,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-06 21:57:32,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-06 21:57:32,990 INFO L87 Difference]: Start difference. First operand 78 states. Second operand 4 states. [2020-11-06 21:57:33,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 21:57:33,488 INFO L93 Difference]: Finished difference Result 147 states and 238 transitions. [2020-11-06 21:57:33,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-06 21:57:33,491 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-11-06 21:57:33,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 21:57:33,503 INFO L225 Difference]: With dead ends: 147 [2020-11-06 21:57:33,504 INFO L226 Difference]: Without dead ends: 70 [2020-11-06 21:57:33,510 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-06 21:57:33,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-11-06 21:57:33,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-11-06 21:57:33,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-11-06 21:57:33,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 97 transitions. [2020-11-06 21:57:33,592 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 97 transitions. Word has length 20 [2020-11-06 21:57:33,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 21:57:33,593 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 97 transitions. [2020-11-06 21:57:33,593 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-06 21:57:33,593 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 97 transitions. [2020-11-06 21:57:33,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-06 21:57:33,596 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 21:57:33,596 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] [2020-11-06 21:57:33,597 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-06 21:57:33,597 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 21:57:33,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 21:57:33,599 INFO L82 PathProgramCache]: Analyzing trace with hash -83505235, now seen corresponding path program 1 times [2020-11-06 21:57:33,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 21:57:33,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417338544] [2020-11-06 21:57:33,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 21:57:33,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 21:57:33,707 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 21:57:33,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 21:57:33,766 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 21:57:33,805 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-06 21:57:33,806 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-06 21:57:33,807 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-06 21:57:33,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 09:57:33 BoogieIcfgContainer [2020-11-06 21:57:33,846 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-06 21:57:33,849 INFO L168 Benchmark]: Toolchain (without parser) took 3069.40 ms. Allocated memory is still 157.3 MB. Free memory was 133.7 MB in the beginning and 86.5 MB in the end (delta: 47.2 MB). Peak memory consumption was 48.5 MB. Max. memory is 8.0 GB. [2020-11-06 21:57:33,850 INFO L168 Benchmark]: CDTParser took 1.45 ms. Allocated memory is still 125.8 MB. Free memory was 101.3 MB in the beginning and 101.2 MB in the end (delta: 74.8 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 21:57:33,851 INFO L168 Benchmark]: CACSL2BoogieTranslator took 477.97 ms. Allocated memory is still 157.3 MB. Free memory was 133.0 MB in the beginning and 119.4 MB in the end (delta: 13.7 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-11-06 21:57:33,852 INFO L168 Benchmark]: Boogie Preprocessor took 104.03 ms. Allocated memory is still 157.3 MB. Free memory was 119.4 MB in the beginning and 116.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-06 21:57:33,853 INFO L168 Benchmark]: RCFGBuilder took 956.54 ms. Allocated memory is still 157.3 MB. Free memory was 116.9 MB in the beginning and 114.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 13.1 MB. Max. memory is 8.0 GB. [2020-11-06 21:57:33,854 INFO L168 Benchmark]: TraceAbstraction took 1513.80 ms. Allocated memory is still 157.3 MB. Free memory was 114.1 MB in the beginning and 86.5 MB in the end (delta: 27.6 MB). Peak memory consumption was 28.1 MB. Max. memory is 8.0 GB. [2020-11-06 21:57:33,858 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.45 ms. Allocated memory is still 125.8 MB. Free memory was 101.3 MB in the beginning and 101.2 MB in the end (delta: 74.8 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 477.97 ms. Allocated memory is still 157.3 MB. Free memory was 133.0 MB in the beginning and 119.4 MB in the end (delta: 13.7 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 104.03 ms. Allocated memory is still 157.3 MB. Free memory was 119.4 MB in the beginning and 116.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 956.54 ms. Allocated memory is still 157.3 MB. Free memory was 116.9 MB in the beginning and 114.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 13.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1513.80 ms. Allocated memory is still 157.3 MB. Free memory was 114.1 MB in the beginning and 86.5 MB in the end (delta: 27.6 MB). Peak memory consumption was 28.1 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 bitwiseOr at line 46, overapproximation of someUnaryDOUBLEoperation at line 22, overapproximation of bitwiseAnd at line 41, overapproximation of someBinaryArithmeticDOUBLEoperation at line 47, overapproximation of someBinaryDOUBLEComparisonOperation at line 192, 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)=8589934610, \old(Zero_fmod)=8589934604, \old(Zero_fmod)=8589934595, one_fmod=1, Zero_fmod={5:0}] [L184] double x = 0.0; [L185] double y = __VERIFIER_nondet_double(); [L187] COND TRUE y < 0.0 || y > 0.0 VAL [one_fmod=1, x=0, y=8589934605, Zero_fmod={5:0}] [L189] CALL, EXPR fmod_double(x, y) VAL [\old(x)=0, \old(y)=8589934605, 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)=0, \old(y)=8589934605, one_fmod=1, x=0, y=8589934605, 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)=0, \old(y)=8589934605, lx=8589934602, ly=8589934593, one_fmod=1, sx=-1, x=0, y=8589934605, 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)=0, \old(y)=8589934605, hx=2146435072, lx=8589934602, ly=8589934593, one_fmod=1, sx=-1, x=0, y=8589934605, Zero_fmod={5:0}] [L189] RET, EXPR fmod_double(x, y) VAL [fmod_double(x, y)=8589934607, one_fmod=1, x=0, y=8589934605, Zero_fmod={5:0}] [L189] double res = fmod_double(x, y); [L192] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [one_fmod=1, res=8589934607, res == 0.0 && __signbit_double(res) == 0=0, x=0, y=8589934605, Zero_fmod={5:0}] [L192] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L193] CALL reach_error() VAL [one_fmod=1, Zero_fmod={5:0}] [L3] __assert_fail("0", "double_req_bl_1130a.c", 3, "reach_error") VAL [one_fmod=1, Zero_fmod={5:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 81 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 100 SDtfs, 16 SDslu, 84 SDs, 0 SdLazy, 103 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=78occurred 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, 0.3s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 1330 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...