/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_1012a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 20:09:46,268 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 20:09:46,271 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 20:09:46,304 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 20:09:46,305 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 20:09:46,306 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 20:09:46,308 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 20:09:46,311 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 20:09:46,317 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 20:09:46,318 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 20:09:46,320 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 20:09:46,321 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 20:09:46,322 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 20:09:46,323 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 20:09:46,324 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 20:09:46,326 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 20:09:46,327 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 20:09:46,328 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 20:09:46,331 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 20:09:46,333 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 20:09:46,335 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 20:09:46,336 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 20:09:46,338 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 20:09:46,339 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 20:09:46,343 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 20:09:46,354 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 20:09:46,355 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 20:09:46,356 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 20:09:46,359 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 20:09:46,371 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 20:09:46,371 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 20:09:46,373 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 20:09:46,373 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 20:09:46,374 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 20:09:46,374 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 20:09:46,374 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 20:09:46,374 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 20:09:46,374 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 20:09:46,375 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 20:09:46,375 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 20:09:46,375 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 20:09:46,375 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 20:09:46,375 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 20:09:46,376 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 20:09:46,376 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 20:09:46,376 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 20:09:46,390 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 20:09:46,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 20:09:46,390 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 20:09:46,391 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 20:09:46,391 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 20:09:46,391 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 20:09:46,764 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 20:09:46,792 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 20:09:46,797 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 20:09:46,798 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 20:09:46,799 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 20:09:46,800 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1012a.c [2021-02-21 20:09:46,899 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5adee0f89/c16ef81fd3f34031a4e92e1ddab7b5f6/FLAGea5ae4ae6 [2021-02-21 20:09:47,475 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 20:09:47,475 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1012a.c [2021-02-21 20:09:47,483 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5adee0f89/c16ef81fd3f34031a4e92e1ddab7b5f6/FLAGea5ae4ae6 [2021-02-21 20:09:47,857 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5adee0f89/c16ef81fd3f34031a4e92e1ddab7b5f6 [2021-02-21 20:09:47,860 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 20:09:47,876 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 20:09:47,881 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 20:09:47,881 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 20:09:47,885 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 20:09:47,886 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 08:09:47" (1/1) ... [2021-02-21 20:09:47,887 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@212808b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:09:47, skipping insertion in model container [2021-02-21 20:09:47,887 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 08:09:47" (1/1) ... [2021-02-21 20:09:47,897 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 20:09:47,914 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 20:09:48,078 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_1012a.c[1638,1651] [2021-02-21 20:09:48,081 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 20:09:48,092 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 20:09:48,121 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_1012a.c[1638,1651] [2021-02-21 20:09:48,122 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 20:09:48,141 INFO L208 MainTranslator]: Completed translation [2021-02-21 20:09:48,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:09:48 WrapperNode [2021-02-21 20:09:48,142 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 20:09:48,143 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 20:09:48,143 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 20:09:48,143 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 20:09:48,158 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:09:48" (1/1) ... [2021-02-21 20:09:48,159 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:09:48" (1/1) ... [2021-02-21 20:09:48,184 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:09:48" (1/1) ... [2021-02-21 20:09:48,184 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:09:48" (1/1) ... [2021-02-21 20:09:48,209 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:09:48" (1/1) ... [2021-02-21 20:09:48,219 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:09:48" (1/1) ... [2021-02-21 20:09:48,226 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:09:48" (1/1) ... [2021-02-21 20:09:48,235 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 20:09:48,236 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 20:09:48,237 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 20:09:48,237 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 20:09:48,238 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:09:48" (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 20:09:48,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 20:09:48,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 20:09:48,369 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 20:09:48,369 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2021-02-21 20:09:48,369 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2021-02-21 20:09:48,369 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_double [2021-02-21 20:09:48,369 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2021-02-21 20:09:48,370 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 20:09:48,370 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 20:09:48,370 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 20:09:48,371 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 20:09:48,371 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 20:09:48,372 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2021-02-21 20:09:48,372 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2021-02-21 20:09:48,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-21 20:09:48,373 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 20:09:48,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 20:09:48,373 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_double [2021-02-21 20:09:48,374 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2021-02-21 20:09:48,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 20:09:48,376 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-21 20:09:48,377 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 20:09:48,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 20:09:48,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 20:09:48,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 20:09:48,942 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 20:09:48,942 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-02-21 20:09:48,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 08:09:48 BoogieIcfgContainer [2021-02-21 20:09:48,945 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 20:09:48,947 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 20:09:48,947 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 20:09:48,951 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 20:09:48,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 08:09:47" (1/3) ... [2021-02-21 20:09:48,953 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12a6606 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 08:09:48, skipping insertion in model container [2021-02-21 20:09:48,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:09:48" (2/3) ... [2021-02-21 20:09:48,953 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12a6606 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 08:09:48, skipping insertion in model container [2021-02-21 20:09:48,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 08:09:48" (3/3) ... [2021-02-21 20:09:48,955 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1012a.c [2021-02-21 20:09:48,963 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 20:09:48,969 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 20:09:48,994 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 20:09:49,023 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 20:09:49,024 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 20:09:49,024 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 20:09:49,024 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 20:09:49,025 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 20:09:49,025 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 20:09:49,025 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 20:09:49,025 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 20:09:49,043 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states. [2021-02-21 20:09:49,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-02-21 20:09:49,054 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:09:49,055 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] [2021-02-21 20:09:49,056 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:09:49,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:09:49,062 INFO L82 PathProgramCache]: Analyzing trace with hash 2068245769, now seen corresponding path program 1 times [2021-02-21 20:09:49,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:09:49,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1745395812] [2021-02-21 20:09:49,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:09:49,162 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:09:49,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:09:49,337 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:09:49,339 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:09:49,341 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:09:49,342 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:09:49,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:09:49,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:09:49,436 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:09:49,437 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:09:49,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-21 20:09:49,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:09:49,474 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:09:49,475 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:09:49,476 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:09:49,477 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:09:49,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-02-21 20:09:49,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:09:49,486 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:09:49,487 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:09:49,489 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:09:49,489 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:09:49,504 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 20:09:49,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1745395812] [2021-02-21 20:09:49,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:09:49,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 20:09:49,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126321114] [2021-02-21 20:09:49,523 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 20:09:49,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:09:49,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 20:09:49,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 20:09:49,557 INFO L87 Difference]: Start difference. First operand 71 states. Second operand 4 states. [2021-02-21 20:09:49,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:09:49,940 INFO L93 Difference]: Finished difference Result 125 states and 138 transitions. [2021-02-21 20:09:49,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 20:09:49,942 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2021-02-21 20:09:49,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:09:49,952 INFO L225 Difference]: With dead ends: 125 [2021-02-21 20:09:49,952 INFO L226 Difference]: Without dead ends: 64 [2021-02-21 20:09:49,956 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 [2021-02-21 20:09:49,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-02-21 20:09:50,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-02-21 20:09:50,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2021-02-21 20:09:50,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 63 transitions. [2021-02-21 20:09:50,010 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 63 transitions. Word has length 38 [2021-02-21 20:09:50,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:09:50,010 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 63 transitions. [2021-02-21 20:09:50,011 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 20:09:50,011 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 63 transitions. [2021-02-21 20:09:50,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-02-21 20:09:50,013 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:09:50,014 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] [2021-02-21 20:09:50,014 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 20:09:50,014 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:09:50,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:09:50,015 INFO L82 PathProgramCache]: Analyzing trace with hash -275805674, now seen corresponding path program 1 times [2021-02-21 20:09:50,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:09:50,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [973011852] [2021-02-21 20:09:50,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:09:50,020 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:09:50,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 20:09:50,183 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 20:09:50,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 20:09:50,264 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 20:09:50,305 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-21 20:09:50,306 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 20:09:50,307 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 20:09:50,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 08:09:50 BoogieIcfgContainer [2021-02-21 20:09:50,333 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 20:09:50,338 INFO L168 Benchmark]: Toolchain (without parser) took 2471.08 ms. Allocated memory is still 151.0 MB. Free memory was 127.9 MB in the beginning and 124.6 MB in the end (delta: 3.3 MB). Peak memory consumption was 4.6 MB. Max. memory is 8.0 GB. [2021-02-21 20:09:50,340 INFO L168 Benchmark]: CDTParser took 0.97 ms. Allocated memory is still 151.0 MB. Free memory is still 128.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 20:09:50,342 INFO L168 Benchmark]: CACSL2BoogieTranslator took 261.28 ms. Allocated memory is still 151.0 MB. Free memory was 126.8 MB in the beginning and 116.5 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-21 20:09:50,343 INFO L168 Benchmark]: Boogie Preprocessor took 92.70 ms. Allocated memory is still 151.0 MB. Free memory was 116.5 MB in the beginning and 114.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-21 20:09:50,344 INFO L168 Benchmark]: RCFGBuilder took 708.46 ms. Allocated memory is still 151.0 MB. Free memory was 114.7 MB in the beginning and 125.8 MB in the end (delta: -11.1 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. [2021-02-21 20:09:50,345 INFO L168 Benchmark]: TraceAbstraction took 1387.30 ms. Allocated memory is still 151.0 MB. Free memory was 125.3 MB in the beginning and 124.6 MB in the end (delta: 652.1 kB). Peak memory consumption was 1.7 MB. Max. memory is 8.0 GB. [2021-02-21 20:09:50,356 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.97 ms. Allocated memory is still 151.0 MB. Free memory is still 128.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 261.28 ms. Allocated memory is still 151.0 MB. Free memory was 126.8 MB in the beginning and 116.5 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 92.70 ms. Allocated memory is still 151.0 MB. Free memory was 116.5 MB in the beginning and 114.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 708.46 ms. Allocated memory is still 151.0 MB. Free memory was 114.7 MB in the beginning and 125.8 MB in the end (delta: -11.1 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1387.30 ms. Allocated memory is still 151.0 MB. Free memory was 125.3 MB in the beginning and 124.6 MB in the end (delta: 652.1 kB). Peak memory consumption was 1.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 75]: 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 someBinaryArithmeticDOUBLEoperation at line 70, overapproximation of bitwiseAnd at line 40. Possible FailurePath: [L70] double x = 1.0 / 0.0; [L71] CALL, EXPR fabs_double(x) [L47] __uint32_t high; [L49] ieee_double_shape_type gh_u; [L50] gh_u.value = (x) [L51] EXPR gh_u.parts.msw [L51] (high) = gh_u.parts.msw [L54] ieee_double_shape_type sh_u; [L55] sh_u.value = (x) [L56] sh_u.parts.msw = (high & 0x7fffffff) [L57] EXPR sh_u.value [L57] (x) = sh_u.value [L59] return x; [L71] RET, EXPR fabs_double(x) [L71] double res = fabs_double(x); [L74] CALL, EXPR isinf_double(res) [L33] __int32_t hx, lx; [L35] ieee_double_shape_type ew_u; [L36] ew_u.value = (x) [L37] EXPR ew_u.parts.msw [L37] (hx) = ew_u.parts.msw [L38] EXPR ew_u.parts.lsw [L38] (lx) = ew_u.parts.lsw [L40] hx &= 0x7fffffff [L41] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L42] hx = 0x7ff00000 - hx [L43] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L74] RET, EXPR isinf_double(res) [L74] COND TRUE !isinf_double(res) [L75] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 91 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 66 SDtfs, 13 SDslu, 41 SDs, 0 SdLazy, 79 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=71occurred 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...