/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/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 20:24:56,742 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 20:24:56,745 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 20:24:56,797 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-23 20:24:56,840 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 20:24:56,841 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 20:24:56,842 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 20:24:56,844 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 20:24:56,845 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 20:24:56,846 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 20:24:56,848 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 20:24:56,851 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 20:24:56,853 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 20:24:56,854 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 20:24:56,856 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 20:24:56,857 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 20:24:56,861 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 20:24:56,876 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 20:24:56,889 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 20:24:56,890 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 20:24:56,891 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 20:24:56,892 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 20:24:56,892 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 20:24:56,892 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 20:24:56,892 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 20:24:56,893 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 20:24:56,893 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 20:24:56,893 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 20:24:56,893 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 20:24:56,894 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 20:24:56,894 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 20:24:56,894 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 20:24:56,895 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 20:24:56,895 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 20:24:56,895 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 20:24:56,895 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 20:24:56,896 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:24:56,896 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 20:24:56,896 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 20:24:56,896 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 20:24:56,897 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 20:24:57,274 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 20:24:57,303 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 20:24:57,307 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 20:24:57,308 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 20:24:57,311 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 20:24:57,313 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-10-23 20:24:57,410 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bab3218a8/81690858e36b4ea786b28151df5dc63a/FLAG6d821eb18 [2020-10-23 20:24:58,132 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 20:24:58,133 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-10-23 20:24:58,142 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bab3218a8/81690858e36b4ea786b28151df5dc63a/FLAG6d821eb18 [2020-10-23 20:24:58,481 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bab3218a8/81690858e36b4ea786b28151df5dc63a [2020-10-23 20:24:58,484 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 20:24:58,491 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 20:24:58,496 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 20:24:58,496 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 20:24:58,500 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 20:24:58,501 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:24:58" (1/1) ... [2020-10-23 20:24:58,505 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3898f96d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:24:58, skipping insertion in model container [2020-10-23 20:24:58,505 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:24:58" (1/1) ... [2020-10-23 20:24:58,514 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 20:24:58,562 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 20:24:58,776 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:24:58,789 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 20:24:58,876 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:24:58,902 INFO L208 MainTranslator]: Completed translation [2020-10-23 20:24:58,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:24:58 WrapperNode [2020-10-23 20:24:58,903 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 20:24:58,904 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 20:24:58,904 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 20:24:58,904 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 20:24:58,916 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:24:58" (1/1) ... [2020-10-23 20:24:58,916 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:24:58" (1/1) ... [2020-10-23 20:24:58,931 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:24:58" (1/1) ... [2020-10-23 20:24:58,931 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:24:58" (1/1) ... [2020-10-23 20:24:58,949 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:24:58" (1/1) ... [2020-10-23 20:24:58,959 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:24:58" (1/1) ... [2020-10-23 20:24:58,963 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:24:58" (1/1) ... [2020-10-23 20:24:58,968 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 20:24:58,969 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 20:24:58,970 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 20:24:58,970 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 20:24:58,971 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:24:58" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:24:59,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 20:24:59,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 20:24:59,049 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 20:24:59,049 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-10-23 20:24:59,049 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-10-23 20:24:59,049 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-10-23 20:24:59,050 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 20:24:59,050 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 20:24:59,050 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 20:24:59,050 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 20:24:59,050 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 20:24:59,051 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-10-23 20:24:59,051 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-10-23 20:24:59,051 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-10-23 20:24:59,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-23 20:24:59,051 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 20:24:59,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 20:24:59,052 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-23 20:24:59,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 20:24:59,052 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-10-23 20:24:59,052 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 20:24:59,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 20:24:59,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 20:24:59,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-23 20:24:59,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 20:25:00,055 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 20:25:00,055 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-23 20:25:00,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:25:00 BoogieIcfgContainer [2020-10-23 20:25:00,058 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 20:25:00,060 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 20:25:00,060 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 20:25:00,064 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 20:25:00,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:24:58" (1/3) ... [2020-10-23 20:25:00,065 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70928b1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:25:00, skipping insertion in model container [2020-10-23 20:25:00,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:24:58" (2/3) ... [2020-10-23 20:25:00,065 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70928b1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:25:00, skipping insertion in model container [2020-10-23 20:25:00,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:25:00" (3/3) ... [2020-10-23 20:25:00,067 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1130a.c [2020-10-23 20:25:00,080 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 20:25:00,085 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 20:25:00,099 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 20:25:00,125 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 20:25:00,125 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 20:25:00,125 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 20:25:00,126 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 20:25:00,126 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 20:25:00,126 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 20:25:00,126 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 20:25:00,126 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 20:25:00,148 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states. [2020-10-23 20:25:00,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-23 20:25:00,162 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:25:00,163 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:25:00,164 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:25:00,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:25:00,171 INFO L82 PathProgramCache]: Analyzing trace with hash 874117461, now seen corresponding path program 1 times [2020-10-23 20:25:00,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:25:00,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1975027522] [2020-10-23 20:25:00,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:25:00,259 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:25:00,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:00,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:25:00,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:00,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-23 20:25:00,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:00,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:25:00,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1975027522] [2020-10-23 20:25:00,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:25:00,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 20:25:00,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280730496] [2020-10-23 20:25:00,583 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 20:25:00,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:25:00,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 20:25:00,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 20:25:00,601 INFO L87 Difference]: Start difference. First operand 229 states. Second operand 4 states. [2020-10-23 20:25:01,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:25:01,306 INFO L93 Difference]: Finished difference Result 424 states and 515 transitions. [2020-10-23 20:25:01,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-23 20:25:01,308 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2020-10-23 20:25:01,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:25:01,322 INFO L225 Difference]: With dead ends: 424 [2020-10-23 20:25:01,323 INFO L226 Difference]: Without dead ends: 219 [2020-10-23 20:25:01,328 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-23 20:25:01,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2020-10-23 20:25:01,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2020-10-23 20:25:01,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2020-10-23 20:25:01,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 246 transitions. [2020-10-23 20:25:01,400 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 246 transitions. Word has length 52 [2020-10-23 20:25:01,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:25:01,401 INFO L481 AbstractCegarLoop]: Abstraction has 219 states and 246 transitions. [2020-10-23 20:25:01,401 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 20:25:01,401 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 246 transitions. [2020-10-23 20:25:01,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-23 20:25:01,406 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:25:01,406 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:25:01,406 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 20:25:01,407 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:25:01,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:25:01,408 INFO L82 PathProgramCache]: Analyzing trace with hash 595290325, now seen corresponding path program 1 times [2020-10-23 20:25:01,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:25:01,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [306154576] [2020-10-23 20:25:01,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:25:01,413 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:25:01,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:25:01,501 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:25:01,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:25:01,605 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:25:01,664 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 20:25:01,664 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 20:25:01,666 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 20:25:01,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:25:01 BoogieIcfgContainer [2020-10-23 20:25:01,689 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 20:25:01,692 INFO L168 Benchmark]: Toolchain (without parser) took 3204.78 ms. Allocated memory was 151.0 MB in the beginning and 183.5 MB in the end (delta: 32.5 MB). Free memory was 127.8 MB in the beginning and 144.4 MB in the end (delta: -16.6 MB). Peak memory consumption was 17.0 MB. Max. memory is 8.0 GB. [2020-10-23 20:25:01,693 INFO L168 Benchmark]: CDTParser took 1.03 ms. Allocated memory is still 151.0 MB. Free memory was 124.5 MB in the beginning and 124.4 MB in the end (delta: 91.3 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 20:25:01,694 INFO L168 Benchmark]: CACSL2BoogieTranslator took 407.52 ms. Allocated memory is still 151.0 MB. Free memory was 127.2 MB in the beginning and 113.9 MB in the end (delta: 13.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-10-23 20:25:01,695 INFO L168 Benchmark]: Boogie Preprocessor took 64.68 ms. Allocated memory is still 151.0 MB. Free memory was 113.9 MB in the beginning and 111.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-10-23 20:25:01,696 INFO L168 Benchmark]: RCFGBuilder took 1088.67 ms. Allocated memory is still 151.0 MB. Free memory was 111.3 MB in the beginning and 94.6 MB in the end (delta: 16.7 MB). Peak memory consumption was 17.6 MB. Max. memory is 8.0 GB. [2020-10-23 20:25:01,697 INFO L168 Benchmark]: TraceAbstraction took 1629.82 ms. Allocated memory was 151.0 MB in the beginning and 183.5 MB in the end (delta: 32.5 MB). Free memory was 94.0 MB in the beginning and 144.4 MB in the end (delta: -50.4 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 20:25:01,701 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.03 ms. Allocated memory is still 151.0 MB. Free memory was 124.5 MB in the beginning and 124.4 MB in the end (delta: 91.3 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 407.52 ms. Allocated memory is still 151.0 MB. Free memory was 127.2 MB in the beginning and 113.9 MB in the end (delta: 13.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 64.68 ms. Allocated memory is still 151.0 MB. Free memory was 113.9 MB in the beginning and 111.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1088.67 ms. Allocated memory is still 151.0 MB. Free memory was 111.3 MB in the beginning and 94.6 MB in the end (delta: 16.7 MB). Peak memory consumption was 17.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1629.82 ms. Allocated memory was 151.0 MB in the beginning and 183.5 MB in the end (delta: 32.5 MB). Free memory was 94.0 MB in the beginning and 144.4 MB in the end (delta: -50.4 MB). There was no memory consumed. 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 43, 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, }; [L184] double x = 0.0; [L185] double y = __VERIFIER_nondet_double(); [L187] COND TRUE y < 0.0 || y > 0.0 [L189] CALL, EXPR fmod_double(x, y) [L26] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L27] __uint32_t lx, ly, lz; [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 [L45-L46] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L47] return (x * y) / (x * y); [L189] RET, EXPR fmod_double(x, y) [L189] double res = fmod_double(x, y); [L192] EXPR res == 0.0 && __signbit_double(res) == 0 [L192] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L193] CALL reach_error() [L3] __assert_fail("0", "double_req_bl_1130a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 233 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 251 SDtfs, 47 SDslu, 183 SDs, 0 SdLazy, 275 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=229occurred 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: No data available, 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...