/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_1072a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-06 21:57:22,042 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-06 21:57:22,046 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-06 21:57:22,086 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-06 21:57:22,087 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-06 21:57:22,088 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-06 21:57:22,090 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-06 21:57:22,092 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-06 21:57:22,094 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-06 21:57:22,095 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-06 21:57:22,097 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-06 21:57:22,098 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-06 21:57:22,099 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-06 21:57:22,100 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-06 21:57:22,101 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-06 21:57:22,102 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-06 21:57:22,103 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-06 21:57:22,104 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-06 21:57:22,107 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-06 21:57:22,109 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-06 21:57:22,111 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-06 21:57:22,113 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-06 21:57:22,115 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-06 21:57:22,116 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-06 21:57:22,119 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-06 21:57:22,120 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-06 21:57:22,120 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-06 21:57:22,121 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-06 21:57:22,122 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-06 21:57:22,123 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-06 21:57:22,123 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-06 21:57:22,124 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-06 21:57:22,125 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-06 21:57:22,126 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-06 21:57:22,127 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-06 21:57:22,127 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-06 21:57:22,128 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-06 21:57:22,129 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-06 21:57:22,129 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-06 21:57:22,130 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-06 21:57:22,131 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-06 21:57:22,132 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 21:57:22,159 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-06 21:57:22,159 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-06 21:57:22,161 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-06 21:57:22,161 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-06 21:57:22,161 INFO L138 SettingsManager]: * Use SBE=true [2020-11-06 21:57:22,162 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-06 21:57:22,162 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-06 21:57:22,162 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-06 21:57:22,162 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-06 21:57:22,163 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-06 21:57:22,163 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-06 21:57:22,163 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-06 21:57:22,163 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-06 21:57:22,164 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-06 21:57:22,164 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-06 21:57:22,164 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-06 21:57:22,164 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-06 21:57:22,165 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-06 21:57:22,165 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-06 21:57:22,165 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-06 21:57:22,165 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-06 21:57:22,165 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 21:57:22,166 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-06 21:57:22,166 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-06 21:57:22,166 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-06 21:57:22,166 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-06 21:57:22,167 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-06 21:57:22,167 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-06 21:57:22,167 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-06 21:57:22,167 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-06 21:57:22,520 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-06 21:57:22,556 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-06 21:57:22,560 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-06 21:57:22,562 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-06 21:57:22,563 INFO L275 PluginConnector]: CDTParser initialized [2020-11-06 21:57:22,564 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1072a.c [2020-11-06 21:57:22,648 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7e1fce16/7bcfe5e08aa6477c85d8d231a4bf26b5/FLAGfcd211759 [2020-11-06 21:57:23,254 INFO L306 CDTParser]: Found 1 translation units. [2020-11-06 21:57:23,255 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1072a.c [2020-11-06 21:57:23,263 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7e1fce16/7bcfe5e08aa6477c85d8d231a4bf26b5/FLAGfcd211759 [2020-11-06 21:57:23,638 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7e1fce16/7bcfe5e08aa6477c85d8d231a4bf26b5 [2020-11-06 21:57:23,641 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-06 21:57:23,649 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-06 21:57:23,652 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-06 21:57:23,652 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-06 21:57:23,657 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-06 21:57:23,658 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:57:23" (1/1) ... [2020-11-06 21:57:23,663 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8f154f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:23, skipping insertion in model container [2020-11-06 21:57:23,664 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:57:23" (1/1) ... [2020-11-06 21:57:23,674 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-06 21:57:23,697 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-06 21:57:23,873 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 21:57:23,894 INFO L203 MainTranslator]: Completed pre-run [2020-11-06 21:57:23,977 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 21:57:24,005 INFO L208 MainTranslator]: Completed translation [2020-11-06 21:57:24,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:24 WrapperNode [2020-11-06 21:57:24,009 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-06 21:57:24,010 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-06 21:57:24,010 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-06 21:57:24,010 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-06 21:57:24,026 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:24" (1/1) ... [2020-11-06 21:57:24,029 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:24" (1/1) ... [2020-11-06 21:57:24,058 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:24" (1/1) ... [2020-11-06 21:57:24,059 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:24" (1/1) ... [2020-11-06 21:57:24,096 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:24" (1/1) ... [2020-11-06 21:57:24,109 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:24" (1/1) ... [2020-11-06 21:57:24,118 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:24" (1/1) ... [2020-11-06 21:57:24,125 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-06 21:57:24,129 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-06 21:57:24,130 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-06 21:57:24,130 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-06 21:57:24,131 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:24" (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 21:57:24,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-06 21:57:24,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-06 21:57:24,234 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-06 21:57:24,234 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-11-06 21:57:24,234 INFO L138 BoogieDeclarations]: Found implementation of procedure trunc_double [2020-11-06 21:57:24,235 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_double [2020-11-06 21:57:24,235 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-06 21:57:24,236 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-06 21:57:24,236 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-06 21:57:24,237 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-06 21:57:24,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-06 21:57:24,237 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-11-06 21:57:24,238 INFO L130 BoogieDeclarations]: Found specification of procedure trunc_double [2020-11-06 21:57:24,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-06 21:57:24,239 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-06 21:57:24,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-06 21:57:24,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-06 21:57:24,241 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-06 21:57:24,241 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_double [2020-11-06 21:57:24,241 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-06 21:57:24,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-06 21:57:24,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-06 21:57:24,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-06 21:57:24,903 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-06 21:57:24,904 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-06 21:57:24,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:57:24 BoogieIcfgContainer [2020-11-06 21:57:24,906 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-06 21:57:24,908 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-06 21:57:24,908 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-06 21:57:24,912 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-06 21:57:24,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:57:23" (1/3) ... [2020-11-06 21:57:24,913 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1729775d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:57:24, skipping insertion in model container [2020-11-06 21:57:24,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:24" (2/3) ... [2020-11-06 21:57:24,914 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1729775d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:57:24, skipping insertion in model container [2020-11-06 21:57:24,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:57:24" (3/3) ... [2020-11-06 21:57:24,916 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1072a.c [2020-11-06 21:57:24,933 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-06 21:57:24,937 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-06 21:57:24,950 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-06 21:57:24,978 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-06 21:57:24,979 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-06 21:57:24,979 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-06 21:57:24,979 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-06 21:57:24,979 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-06 21:57:24,979 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-06 21:57:24,979 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-06 21:57:24,980 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-06 21:57:24,998 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-11-06 21:57:25,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-06 21:57:25,005 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 21:57:25,006 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] [2020-11-06 21:57:25,007 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 21:57:25,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 21:57:25,014 INFO L82 PathProgramCache]: Analyzing trace with hash 941001148, now seen corresponding path program 1 times [2020-11-06 21:57:25,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 21:57:25,025 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641293225] [2020-11-06 21:57:25,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 21:57:25,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:57:25,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 21:57:25,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:57:25,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-06 21:57:25,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:57:25,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-06 21:57:25,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:57:25,322 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 21:57:25,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641293225] [2020-11-06 21:57:25,324 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 21:57:25,324 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-06 21:57:25,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378864134] [2020-11-06 21:57:25,330 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-06 21:57:25,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 21:57:25,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-06 21:57:25,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-06 21:57:25,349 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 4 states. [2020-11-06 21:57:25,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 21:57:25,566 INFO L93 Difference]: Finished difference Result 77 states and 107 transitions. [2020-11-06 21:57:25,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-06 21:57:25,568 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-11-06 21:57:25,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 21:57:25,578 INFO L225 Difference]: With dead ends: 77 [2020-11-06 21:57:25,578 INFO L226 Difference]: Without dead ends: 37 [2020-11-06 21:57:25,582 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 [2020-11-06 21:57:25,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-11-06 21:57:25,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-11-06 21:57:25,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-11-06 21:57:25,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2020-11-06 21:57:25,630 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 26 [2020-11-06 21:57:25,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 21:57:25,631 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2020-11-06 21:57:25,631 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-06 21:57:25,631 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2020-11-06 21:57:25,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-06 21:57:25,633 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 21:57:25,633 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] [2020-11-06 21:57:25,633 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-06 21:57:25,633 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 21:57:25,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 21:57:25,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1994243221, now seen corresponding path program 1 times [2020-11-06 21:57:25,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 21:57:25,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53287431] [2020-11-06 21:57:25,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 21:57:25,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 21:57:25,779 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 21:57:25,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 21:57:25,911 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 21:57:25,947 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-06 21:57:25,948 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-06 21:57:25,949 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-06 21:57:26,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 09:57:26 BoogieIcfgContainer [2020-11-06 21:57:26,001 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-06 21:57:26,005 INFO L168 Benchmark]: Toolchain (without parser) took 2359.45 ms. Allocated memory is still 154.1 MB. Free memory was 129.0 MB in the beginning and 128.3 MB in the end (delta: 753.1 kB). Peak memory consumption was 1.7 MB. Max. memory is 8.0 GB. [2020-11-06 21:57:26,007 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 125.8 MB. Free memory was 81.5 MB in the beginning and 81.1 MB in the end (delta: 361.8 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 21:57:26,008 INFO L168 Benchmark]: CACSL2BoogieTranslator took 357.53 ms. Allocated memory is still 154.1 MB. Free memory was 128.4 MB in the beginning and 117.9 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-11-06 21:57:26,011 INFO L168 Benchmark]: Boogie Preprocessor took 115.87 ms. Allocated memory is still 154.1 MB. Free memory was 117.9 MB in the beginning and 115.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-06 21:57:26,012 INFO L168 Benchmark]: RCFGBuilder took 776.92 ms. Allocated memory is still 154.1 MB. Free memory was 115.8 MB in the beginning and 134.1 MB in the end (delta: -18.3 MB). Peak memory consumption was 28.5 MB. Max. memory is 8.0 GB. [2020-11-06 21:57:26,014 INFO L168 Benchmark]: TraceAbstraction took 1093.09 ms. Allocated memory is still 154.1 MB. Free memory was 133.6 MB in the beginning and 128.3 MB in the end (delta: 5.3 MB). Peak memory consumption was 4.7 MB. Max. memory is 8.0 GB. [2020-11-06 21:57:26,018 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 125.8 MB. Free memory was 81.5 MB in the beginning and 81.1 MB in the end (delta: 361.8 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 357.53 ms. Allocated memory is still 154.1 MB. Free memory was 128.4 MB in the beginning and 117.9 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 115.87 ms. Allocated memory is still 154.1 MB. Free memory was 117.9 MB in the beginning and 115.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 776.92 ms. Allocated memory is still 154.1 MB. Free memory was 115.8 MB in the beginning and 134.1 MB in the end (delta: -18.3 MB). Peak memory consumption was 28.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1093.09 ms. Allocated memory is still 154.1 MB. Free memory was 133.6 MB in the beginning and 128.3 MB in the end (delta: 5.3 MB). Peak memory consumption was 4.7 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 74, overapproximation of someBinaryArithmeticDOUBLEoperation at line 51, overapproximation of bitwiseAnd at line 73. Possible FailurePath: [L86] double x = 1.0 / 0.0; [L87] CALL, EXPR trunc_double(x) VAL [\old(x)=8589934590] [L20] int signbit; [L21] int msw; [L22] unsigned int lsw; [L23] int exponent_less_1023; VAL [\old(x)=8589934590, x=8589934590] [L25] ieee_double_shape_type ew_u; [L26] ew_u.value = (x) [L27] EXPR ew_u.parts.msw [L27] (msw) = ew_u.parts.msw [L28] EXPR ew_u.parts.lsw [L28] (lsw) = ew_u.parts.lsw [L30] signbit = msw & 0x80000000 [L31] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 VAL [\old(x)=8589934590, exponent_less_1023=1024, lsw=9, msw=0, signbit=-2, x=8589934590] [L32] COND FALSE !(exponent_less_1023 < 20) VAL [\old(x)=8589934590, exponent_less_1023=1024, lsw=9, msw=0, signbit=-2, x=8589934590] [L49] COND TRUE exponent_less_1023 > 51 VAL [\old(x)=8589934590, exponent_less_1023=1024, lsw=9, msw=0, signbit=-2, x=8589934590] [L50] COND TRUE exponent_less_1023 == 1024 [L51] return x + x; VAL [\old(x)=8589934590, exponent_less_1023=1024, lsw=9, msw=0, signbit=-2, x=8589934590] [L87] RET, EXPR trunc_double(x) VAL [trunc_double(x)=8589934594, x=8589934590] [L87] double res = trunc_double(x); [L90] CALL, EXPR isinf_double(res) VAL [\old(x)=8589934594] [L66] __int32_t hx, lx; VAL [\old(x)=8589934594, x=8589934594] [L68] ieee_double_shape_type ew_u; [L69] ew_u.value = (x) [L70] EXPR ew_u.parts.msw [L70] (hx) = ew_u.parts.msw [L71] EXPR ew_u.parts.lsw [L71] (lx) = ew_u.parts.lsw [L73] hx &= 0x7fffffff [L74] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L75] hx = 0x7ff00000 - hx [L76] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); VAL [\old(x)=8589934594, \result=0, hx=2146435073, lx=-3, x=8589934594] [L90] RET, EXPR isinf_double(res) VAL [isinf_double(res)=0, res=8589934594, x=8589934590] [L90] COND TRUE !isinf_double(res) [L91] CALL reach_error() [L3] __assert_fail("0", "double_req_bl_1072a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 47 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 41 SDtfs, 8 SDslu, 32 SDs, 0 SdLazy, 41 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s 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=44occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 54 NumberOfCodeBlocks, 54 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 25 ConstructedInterpolants, 0 QuantifiedInterpolants, 1975 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...