/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_1131b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-19 17:19:56,925 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-19 17:19:56,928 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-19 17:19:56,962 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-19 17:19:56,963 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-19 17:19:56,964 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-19 17:19:56,966 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-19 17:19:56,969 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-19 17:19:56,971 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-19 17:19:56,972 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-19 17:19:56,973 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-19 17:19:56,975 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-19 17:19:56,975 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-19 17:19:56,977 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-19 17:19:56,978 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-19 17:19:56,980 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-19 17:19:56,981 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-19 17:19:56,982 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-19 17:19:56,984 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-19 17:19:56,986 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-19 17:19:56,988 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-19 17:19:56,989 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-19 17:19:56,991 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-19 17:19:56,992 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-19 17:19:56,995 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-19 17:19:56,996 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-19 17:19:56,996 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-19 17:19:56,997 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-19 17:19:56,998 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-19 17:19:56,999 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-19 17:19:56,999 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-19 17:19:57,003 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-19 17:19:57,005 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-19 17:19:57,006 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-19 17:19:57,007 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-19 17:19:57,007 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-19 17:19:57,010 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-19 17:19:57,011 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-19 17:19:57,011 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-19 17:19:57,013 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-19 17:19:57,014 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-19 17:19:57,015 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 [2021-02-19 17:19:57,076 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-19 17:19:57,076 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-19 17:19:57,077 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-19 17:19:57,078 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-19 17:19:57,079 INFO L138 SettingsManager]: * Use SBE=true [2021-02-19 17:19:57,079 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-19 17:19:57,079 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-19 17:19:57,079 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-19 17:19:57,080 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-19 17:19:57,080 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-19 17:19:57,080 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-19 17:19:57,080 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-19 17:19:57,080 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-19 17:19:57,081 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-19 17:19:57,081 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-19 17:19:57,082 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-19 17:19:57,082 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-19 17:19:57,083 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-19 17:19:57,083 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-19 17:19:57,083 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-19 17:19:57,083 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-19 17:19:57,083 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-19 17:19:57,084 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-19 17:19:57,084 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-19 17:19:57,084 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-19 17:19:57,084 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-19 17:19:57,085 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-19 17:19:57,085 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-19 17:19:57,085 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-19 17:19:57,513 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-19 17:19:57,546 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-19 17:19:57,549 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-19 17:19:57,550 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-19 17:19:57,551 INFO L275 PluginConnector]: CDTParser initialized [2021-02-19 17:19:57,552 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c [2021-02-19 17:19:57,650 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37d301731/dbffc467a62b4860a64b7a696eb12dad/FLAG0b16bff37 [2021-02-19 17:19:58,315 INFO L306 CDTParser]: Found 1 translation units. [2021-02-19 17:19:58,316 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c [2021-02-19 17:19:58,331 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37d301731/dbffc467a62b4860a64b7a696eb12dad/FLAG0b16bff37 [2021-02-19 17:19:58,619 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37d301731/dbffc467a62b4860a64b7a696eb12dad [2021-02-19 17:19:58,623 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-19 17:19:58,640 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-19 17:19:58,642 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-19 17:19:58,642 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-19 17:19:58,647 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-19 17:19:58,648 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 05:19:58" (1/1) ... [2021-02-19 17:19:58,650 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@494966c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:19:58, skipping insertion in model container [2021-02-19 17:19:58,650 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 05:19:58" (1/1) ... [2021-02-19 17:19:58,659 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-19 17:19:58,705 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-19 17:19:58,960 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_1131b.c[4119,4132] [2021-02-19 17:19:58,964 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-19 17:19:58,974 INFO L203 MainTranslator]: Completed pre-run [2021-02-19 17:19:59,060 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_1131b.c[4119,4132] [2021-02-19 17:19:59,061 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-19 17:19:59,092 INFO L208 MainTranslator]: Completed translation [2021-02-19 17:19:59,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:19:59 WrapperNode [2021-02-19 17:19:59,093 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-19 17:19:59,095 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-19 17:19:59,097 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-19 17:19:59,098 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-19 17:19:59,115 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:19:59" (1/1) ... [2021-02-19 17:19:59,116 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:19:59" (1/1) ... [2021-02-19 17:19:59,146 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:19:59" (1/1) ... [2021-02-19 17:19:59,146 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:19:59" (1/1) ... [2021-02-19 17:19:59,190 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:19:59" (1/1) ... [2021-02-19 17:19:59,208 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:19:59" (1/1) ... [2021-02-19 17:19:59,217 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:19:59" (1/1) ... [2021-02-19 17:19:59,226 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-19 17:19:59,231 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-19 17:19:59,231 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-19 17:19:59,231 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-19 17:19:59,232 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:19:59" (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 [2021-02-19 17:19:59,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-19 17:19:59,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-19 17:19:59,363 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-19 17:19:59,363 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2021-02-19 17:19:59,364 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2021-02-19 17:19:59,364 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-19 17:19:59,364 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-19 17:19:59,364 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-19 17:19:59,365 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-19 17:19:59,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-19 17:19:59,365 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2021-02-19 17:19:59,365 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2021-02-19 17:19:59,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-19 17:19:59,367 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-19 17:19:59,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-19 17:19:59,368 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-19 17:19:59,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-19 17:19:59,368 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2021-02-19 17:19:59,369 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-19 17:19:59,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-19 17:19:59,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-19 17:19:59,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-02-19 17:19:59,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-19 17:20:00,217 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-19 17:20:00,218 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-02-19 17:20:00,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 05:20:00 BoogieIcfgContainer [2021-02-19 17:20:00,220 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-19 17:20:00,222 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-19 17:20:00,222 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-19 17:20:00,225 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-19 17:20:00,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.02 05:19:58" (1/3) ... [2021-02-19 17:20:00,226 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@433bdd12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 05:20:00, skipping insertion in model container [2021-02-19 17:20:00,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:19:59" (2/3) ... [2021-02-19 17:20:00,227 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@433bdd12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 05:20:00, skipping insertion in model container [2021-02-19 17:20:00,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 05:20:00" (3/3) ... [2021-02-19 17:20:00,229 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131b.c [2021-02-19 17:20:00,237 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-19 17:20:00,243 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-19 17:20:00,262 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-19 17:20:00,290 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-19 17:20:00,290 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-19 17:20:00,290 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-19 17:20:00,291 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-19 17:20:00,291 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-19 17:20:00,291 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-19 17:20:00,291 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-19 17:20:00,291 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-19 17:20:00,310 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2021-02-19 17:20:00,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-02-19 17:20:00,317 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 17:20:00,318 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] [2021-02-19 17:20:00,318 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 17:20:00,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 17:20:00,325 INFO L82 PathProgramCache]: Analyzing trace with hash -1043474736, now seen corresponding path program 1 times [2021-02-19 17:20:00,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 17:20:00,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842478032] [2021-02-19 17:20:00,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 17:20:00,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:20:00,517 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:20:00,518 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:20:00,520 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:20:00,521 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:20:00,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 17:20:00,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:20:00,639 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:20:00,640 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:20:00,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-19 17:20:00,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:20:00,663 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:20:00,664 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:20:00,665 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:20:00,665 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:20:00,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-19 17:20:00,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:20:00,673 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:20:00,674 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:20:00,675 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:20:00,676 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:20:00,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 17:20:00,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842478032] [2021-02-19 17:20:00,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 17:20:00,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-19 17:20:00,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451063964] [2021-02-19 17:20:00,691 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-19 17:20:00,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 17:20:00,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-19 17:20:00,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-19 17:20:00,709 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 4 states. [2021-02-19 17:20:01,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 17:20:01,030 INFO L93 Difference]: Finished difference Result 138 states and 227 transitions. [2021-02-19 17:20:01,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-19 17:20:01,032 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2021-02-19 17:20:01,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 17:20:01,041 INFO L225 Difference]: With dead ends: 138 [2021-02-19 17:20:01,042 INFO L226 Difference]: Without dead ends: 68 [2021-02-19 17:20:01,046 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 [2021-02-19 17:20:01,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-02-19 17:20:01,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2021-02-19 17:20:01,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2021-02-19 17:20:01,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 94 transitions. [2021-02-19 17:20:01,093 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 94 transitions. Word has length 25 [2021-02-19 17:20:01,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 17:20:01,093 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 94 transitions. [2021-02-19 17:20:01,094 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-19 17:20:01,094 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 94 transitions. [2021-02-19 17:20:01,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-02-19 17:20:01,095 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 17:20:01,095 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] [2021-02-19 17:20:01,096 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-19 17:20:01,096 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 17:20:01,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 17:20:01,097 INFO L82 PathProgramCache]: Analyzing trace with hash 415947806, now seen corresponding path program 1 times [2021-02-19 17:20:01,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 17:20:01,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327248096] [2021-02-19 17:20:01,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 17:20:01,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-19 17:20:01,224 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-19 17:20:01,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-19 17:20:01,367 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-19 17:20:01,428 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-19 17:20:01,429 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-19 17:20:01,431 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-19 17:20:01,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.02 05:20:01 BoogieIcfgContainer [2021-02-19 17:20:01,483 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-19 17:20:01,485 INFO L168 Benchmark]: Toolchain (without parser) took 2856.97 ms. Allocated memory is still 165.7 MB. Free memory was 141.2 MB in the beginning and 116.7 MB in the end (delta: 24.5 MB). Peak memory consumption was 24.8 MB. Max. memory is 8.0 GB. [2021-02-19 17:20:01,485 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 165.7 MB. Free memory is still 143.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-19 17:20:01,486 INFO L168 Benchmark]: CACSL2BoogieTranslator took 451.17 ms. Allocated memory is still 165.7 MB. Free memory was 140.0 MB in the beginning and 127.0 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-02-19 17:20:01,487 INFO L168 Benchmark]: Boogie Preprocessor took 131.88 ms. Allocated memory is still 165.7 MB. Free memory was 126.9 MB in the beginning and 124.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-02-19 17:20:01,488 INFO L168 Benchmark]: RCFGBuilder took 989.18 ms. Allocated memory is still 165.7 MB. Free memory was 124.5 MB in the beginning and 126.2 MB in the end (delta: -1.7 MB). Peak memory consumption was 14.8 MB. Max. memory is 8.0 GB. [2021-02-19 17:20:01,488 INFO L168 Benchmark]: TraceAbstraction took 1261.01 ms. Allocated memory is still 165.7 MB. Free memory was 126.2 MB in the beginning and 116.7 MB in the end (delta: 9.5 MB). Peak memory consumption was 10.0 MB. Max. memory is 8.0 GB. [2021-02-19 17:20:01,492 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 165.7 MB. Free memory is still 143.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 451.17 ms. Allocated memory is still 165.7 MB. Free memory was 140.0 MB in the beginning and 127.0 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 131.88 ms. Allocated memory is still 165.7 MB. Free memory was 126.9 MB in the beginning and 124.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 989.18 ms. Allocated memory is still 165.7 MB. Free memory was 124.5 MB in the beginning and 126.2 MB in the end (delta: -1.7 MB). Peak memory consumption was 14.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1261.01 ms. Allocated memory is still 165.7 MB. Free memory was 126.2 MB in the beginning and 116.7 MB in the end (delta: 9.5 MB). Peak memory consumption was 10.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 188]: 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 43, overapproximation of someUnaryDOUBLEoperation at line 19, overapproximation of someBinaryArithmeticDOUBLEoperation at line 44, overapproximation of bitwiseAnd at line 38, overapproximation of someBinaryDOUBLEComparisonOperation at line 187, overapproximation of bitwiseXor at line 39. Possible FailurePath: [L17-L20] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [\old(one_fmod)=9223372032558759952, \old(Zero_fmod)=9223372032558759951, \old(Zero_fmod)=9223372032558759944, one_fmod=1, Zero_fmod={5:0}] [L179] double y = -1.0 / 0.0; [L180] double x = __VERIFIER_nondet_double(); [L182] CALL isfinite_double(x) VAL [\old(x)=9223372032558759940, one_fmod=1, Zero_fmod={5:0}] [L163] __int32_t hx; VAL [\old(x)=9223372032558759940, one_fmod=1, x=9223372032558759940, Zero_fmod={5:0}] [L165] ieee_double_shape_type gh_u; [L166] gh_u.value = (x) [L167] EXPR gh_u.parts.msw [L167] (hx) = gh_u.parts.msw [L169] 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}] [L182] RET isfinite_double(x) VAL [isfinite_double(x)=-3, one_fmod=1, x=9223372032558759940, Zero_fmod={5:0}] [L182] COND TRUE isfinite_double(x) [L184] CALL, EXPR fmod_double(x, y) VAL [\old(x)=9223372032558759940, \old(y)=9223372032558759953, one_fmod=1, Zero_fmod={5:0}] [L23] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L24] __uint32_t lx, ly, lz; VAL [\old(x)=9223372032558759940, \old(y)=9223372032558759953, one_fmod=1, x=9223372032558759940, y=9223372032558759953, Zero_fmod={5:0}] [L27] ieee_double_shape_type ew_u; [L28] ew_u.value = (x) [L29] EXPR ew_u.parts.msw [L29] (hx) = ew_u.parts.msw [L30] EXPR ew_u.parts.lsw [L30] (lx) = ew_u.parts.lsw [L33] ieee_double_shape_type ew_u; [L34] ew_u.value = (y) [L35] EXPR ew_u.parts.msw [L35] (hy) = ew_u.parts.msw [L36] EXPR ew_u.parts.lsw [L36] (ly) = ew_u.parts.lsw [L38] sx = hx & 0x80000000 [L39] hx ^= sx [L40] hy &= 0x7fffffff VAL [\old(x)=9223372032558759940, \old(y)=9223372032558759953, lx=9223372032558759950, ly=9223372032558759938, one_fmod=1, sx=14, x=9223372032558759940, y=9223372032558759953, Zero_fmod={5:0}] [L42-L43] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L44] return (x * y) / (x * y); VAL [\old(x)=9223372032558759940, \old(y)=9223372032558759953, hx=2146435072, lx=9223372032558759950, ly=9223372032558759938, one_fmod=1, sx=14, x=9223372032558759940, y=9223372032558759953, Zero_fmod={5:0}] [L184] RET, EXPR fmod_double(x, y) VAL [fmod_double(x, y)=9223372032558759942, one_fmod=1, x=9223372032558759940, y=9223372032558759953, Zero_fmod={5:0}] [L184] double res = fmod_double(x, y); [L187] COND TRUE res != x VAL [one_fmod=1, res=9223372032558759942, x=9223372032558759940, y=9223372032558759953, Zero_fmod={5:0}] [L188] reach_error() VAL [one_fmod=1, res=9223372032558759942, x=9223372032558759940, y=9223372032558759953, Zero_fmod={5:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.1s, 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, 0.1s 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=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, 0.1s 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...