/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_1052d.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 20:10:01,273 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 20:10:01,275 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 20:10:01,308 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 20:10:01,309 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 20:10:01,310 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 20:10:01,312 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 20:10:01,314 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 20:10:01,317 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 20:10:01,318 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 20:10:01,319 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 20:10:01,320 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 20:10:01,321 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 20:10:01,322 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 20:10:01,324 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 20:10:01,325 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 20:10:01,326 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 20:10:01,328 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 20:10:01,330 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 20:10:01,332 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 20:10:01,334 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 20:10:01,336 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 20:10:01,337 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 20:10:01,339 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 20:10:01,342 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 20:10:01,356 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 20:10:01,357 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 20:10:01,358 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 20:10:01,359 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 20:10:01,372 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 20:10:01,372 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 20:10:01,374 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 20:10:01,374 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 20:10:01,374 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 20:10:01,375 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 20:10:01,375 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 20:10:01,375 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 20:10:01,376 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 20:10:01,376 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 20:10:01,376 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 20:10:01,376 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 20:10:01,377 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 20:10:01,377 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 20:10:01,377 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 20:10:01,377 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 20:10:01,378 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 20:10:01,378 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 20:10:01,378 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 20:10:01,379 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 20:10:01,379 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 20:10:01,379 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 20:10:01,379 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 20:10:01,780 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 20:10:01,809 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 20:10:01,813 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 20:10:01,814 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 20:10:01,815 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 20:10:01,816 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1052d.c [2021-02-21 20:10:01,935 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1dd80a0c/5d078017692e4365a9709dc4316e38ba/FLAGbe320eb59 [2021-02-21 20:10:02,570 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 20:10:02,571 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1052d.c [2021-02-21 20:10:02,581 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1dd80a0c/5d078017692e4365a9709dc4316e38ba/FLAGbe320eb59 [2021-02-21 20:10:02,907 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1dd80a0c/5d078017692e4365a9709dc4316e38ba [2021-02-21 20:10:02,910 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 20:10:02,924 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 20:10:02,926 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 20:10:02,926 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 20:10:02,930 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 20:10:02,931 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 08:10:02" (1/1) ... [2021-02-21 20:10:02,933 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12da5e3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:02, skipping insertion in model container [2021-02-21 20:10:02,933 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 08:10:02" (1/1) ... [2021-02-21 20:10:02,942 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 20:10:02,963 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 20:10:03,143 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_1052d.c[2259,2272] [2021-02-21 20:10:03,147 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 20:10:03,158 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 20:10:03,193 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_1052d.c[2259,2272] [2021-02-21 20:10:03,194 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 20:10:03,212 INFO L208 MainTranslator]: Completed translation [2021-02-21 20:10:03,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:03 WrapperNode [2021-02-21 20:10:03,213 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 20:10:03,214 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 20:10:03,214 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 20:10:03,214 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 20:10:03,230 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:03" (1/1) ... [2021-02-21 20:10:03,231 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:03" (1/1) ... [2021-02-21 20:10:03,242 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:03" (1/1) ... [2021-02-21 20:10:03,242 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:03" (1/1) ... [2021-02-21 20:10:03,255 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:03" (1/1) ... [2021-02-21 20:10:03,262 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:03" (1/1) ... [2021-02-21 20:10:03,264 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:03" (1/1) ... [2021-02-21 20:10:03,270 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 20:10:03,272 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 20:10:03,272 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 20:10:03,272 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 20:10:03,273 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:03" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 20:10:03,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 20:10:03,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 20:10:03,402 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 20:10:03,402 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_double [2021-02-21 20:10:03,402 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2021-02-21 20:10:03,403 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 20:10:03,403 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 20:10:03,403 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 20:10:03,404 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 20:10:03,404 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 20:10:03,405 INFO L130 BoogieDeclarations]: Found specification of procedure floor_double [2021-02-21 20:10:03,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-21 20:10:03,405 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 20:10:03,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 20:10:03,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 20:10:03,406 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-21 20:10:03,407 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2021-02-21 20:10:03,407 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 20:10:03,408 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 20:10:03,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 20:10:03,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 20:10:04,072 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 20:10:04,072 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-02-21 20:10:04,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 08:10:04 BoogieIcfgContainer [2021-02-21 20:10:04,075 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 20:10:04,076 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 20:10:04,077 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 20:10:04,080 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 20:10:04,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 08:10:02" (1/3) ... [2021-02-21 20:10:04,081 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1713579c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 08:10:04, skipping insertion in model container [2021-02-21 20:10:04,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:03" (2/3) ... [2021-02-21 20:10:04,082 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1713579c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 08:10:04, skipping insertion in model container [2021-02-21 20:10:04,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 08:10:04" (3/3) ... [2021-02-21 20:10:04,084 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1052d.c [2021-02-21 20:10:04,090 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 20:10:04,096 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 20:10:04,113 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 20:10:04,139 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 20:10:04,139 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 20:10:04,139 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 20:10:04,140 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 20:10:04,140 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 20:10:04,140 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 20:10:04,140 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 20:10:04,140 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 20:10:04,157 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states. [2021-02-21 20:10:04,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-02-21 20:10:04,168 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:10:04,169 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] [2021-02-21 20:10:04,170 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:10:04,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:10:04,177 INFO L82 PathProgramCache]: Analyzing trace with hash -130980842, now seen corresponding path program 1 times [2021-02-21 20:10:04,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:10:04,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1475095581] [2021-02-21 20:10:04,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:10:04,259 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:10:04,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:10:04,392 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:04,393 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:04,394 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:04,395 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:04,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:10:04,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:10:04,481 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:04,482 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:04,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-21 20:10:04,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:10:04,530 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:04,531 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:04,532 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:04,533 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:04,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:10:04,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1475095581] [2021-02-21 20:10:04,549 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:10:04,549 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 20:10:04,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794027528] [2021-02-21 20:10:04,555 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 20:10:04,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:10:04,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 20:10:04,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 20:10:04,574 INFO L87 Difference]: Start difference. First operand 111 states. Second operand 4 states. [2021-02-21 20:10:04,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:10:04,919 INFO L93 Difference]: Finished difference Result 200 states and 245 transitions. [2021-02-21 20:10:04,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 20:10:04,921 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2021-02-21 20:10:04,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:10:04,932 INFO L225 Difference]: With dead ends: 200 [2021-02-21 20:10:04,933 INFO L226 Difference]: Without dead ends: 103 [2021-02-21 20:10:04,937 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 [2021-02-21 20:10:04,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-02-21 20:10:04,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2021-02-21 20:10:04,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2021-02-21 20:10:04,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 118 transitions. [2021-02-21 20:10:05,000 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 118 transitions. Word has length 37 [2021-02-21 20:10:05,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:10:05,001 INFO L480 AbstractCegarLoop]: Abstraction has 103 states and 118 transitions. [2021-02-21 20:10:05,001 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 20:10:05,001 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 118 transitions. [2021-02-21 20:10:05,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-02-21 20:10:05,004 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:10:05,004 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] [2021-02-21 20:10:05,004 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 20:10:05,005 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:10:05,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:10:05,006 INFO L82 PathProgramCache]: Analyzing trace with hash -1139684738, now seen corresponding path program 1 times [2021-02-21 20:10:05,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:10:05,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1750767802] [2021-02-21 20:10:05,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:10:05,011 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:10:05,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 20:10:05,075 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 20:10:05,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 20:10:05,132 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 20:10:05,168 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-21 20:10:05,168 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 20:10:05,169 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 20:10:05,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 08:10:05 BoogieIcfgContainer [2021-02-21 20:10:05,190 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 20:10:05,192 INFO L168 Benchmark]: Toolchain (without parser) took 2279.58 ms. Allocated memory is still 151.0 MB. Free memory was 126.8 MB in the beginning and 77.3 MB in the end (delta: 49.4 MB). Peak memory consumption was 50.2 MB. Max. memory is 8.0 GB. [2021-02-21 20:10:05,193 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 125.8 MB. Free memory is still 82.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 20:10:05,194 INFO L168 Benchmark]: CACSL2BoogieTranslator took 287.13 ms. Allocated memory is still 151.0 MB. Free memory was 125.6 MB in the beginning and 114.8 MB in the end (delta: 10.8 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-02-21 20:10:05,195 INFO L168 Benchmark]: Boogie Preprocessor took 56.68 ms. Allocated memory is still 151.0 MB. Free memory was 114.7 MB in the beginning and 112.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-21 20:10:05,195 INFO L168 Benchmark]: RCFGBuilder took 803.21 ms. Allocated memory is still 151.0 MB. Free memory was 112.8 MB in the beginning and 112.2 MB in the end (delta: 654.1 kB). Peak memory consumption was 9.0 MB. Max. memory is 8.0 GB. [2021-02-21 20:10:05,196 INFO L168 Benchmark]: TraceAbstraction took 1113.74 ms. Allocated memory is still 151.0 MB. Free memory was 111.8 MB in the beginning and 77.3 MB in the end (delta: 34.5 MB). Peak memory consumption was 34.9 MB. Max. memory is 8.0 GB. [2021-02-21 20:10:05,200 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 125.8 MB. Free memory is still 82.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 287.13 ms. Allocated memory is still 151.0 MB. Free memory was 125.6 MB in the beginning and 114.8 MB in the end (delta: 10.8 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 56.68 ms. Allocated memory is still 151.0 MB. Free memory was 114.7 MB in the beginning and 112.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 803.21 ms. Allocated memory is still 151.0 MB. Free memory was 112.8 MB in the beginning and 112.2 MB in the end (delta: 654.1 kB). Peak memory consumption was 9.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1113.74 ms. Allocated memory is still 151.0 MB. Free memory was 111.8 MB in the beginning and 77.3 MB in the end (delta: 34.5 MB). Peak memory consumption was 34.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 105]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 104, overapproximation of bitwiseAnd at line 27, overapproximation of someBinaryArithmeticDOUBLEoperation at line 51. Possible FailurePath: [L16] static const double huge_floor = 1.0e300; [L100] double x = 0.0; [L101] CALL, EXPR floor_double(x) [L19] __int32_t i0, i1, j0; [L20] __uint32_t i, j; [L22] ieee_double_shape_type ew_u; [L23] ew_u.value = (x) [L24] EXPR ew_u.parts.msw [L24] (i0) = ew_u.parts.msw [L25] EXPR ew_u.parts.lsw [L25] (i1) = ew_u.parts.lsw [L27] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff [L28] COND FALSE !(j0 < 20) [L49] COND TRUE j0 > 51 [L50] COND TRUE j0 == 0x400 [L51] return x + x; [L101] RET, EXPR floor_double(x) [L101] double res = floor_double(x); [L104] EXPR res == 0.0 && __signbit_double(res) == 0 [L104] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L105] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 114 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 122 SDtfs, 19 SDslu, 93 SDs, 0 SdLazy, 133 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s 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=111occurred 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...