/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_0720.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 20:09:38,874 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 20:09:38,878 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 20:09:38,932 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 20:09:38,933 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 20:09:38,937 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 20:09:38,941 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 20:09:38,949 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 20:09:38,953 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 20:09:38,961 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 20:09:38,962 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 20:09:38,964 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 20:09:38,965 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 20:09:38,968 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 20:09:38,970 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 20:09:38,972 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 20:09:38,975 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 20:09:38,977 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 20:09:38,984 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 20:09:38,992 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 20:09:38,994 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 20:09:38,996 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 20:09:38,997 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 20:09:39,000 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 20:09:39,027 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 20:09:39,037 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 20:09:39,038 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 20:09:39,038 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 20:09:39,039 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 20:09:39,051 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 20:09:39,052 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 20:09:39,054 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 20:09:39,054 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 20:09:39,054 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 20:09:39,054 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 20:09:39,055 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 20:09:39,055 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 20:09:39,055 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 20:09:39,055 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 20:09:39,055 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 20:09:39,056 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 20:09:39,056 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 20:09:39,056 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 20:09:39,056 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 20:09:39,056 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 20:09:39,057 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 20:09:39,057 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 20:09:39,057 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 20:09:39,057 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 20:09:39,058 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 20:09:39,058 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 20:09:39,058 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 20:09:39,420 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 20:09:39,450 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 20:09:39,456 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 20:09:39,458 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 20:09:39,458 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 20:09:39,459 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0720.c [2021-02-21 20:09:39,546 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/347fde0a3/f0a1c93a4ac24f9cb47b7829a3838a7e/FLAGafbc21608 [2021-02-21 20:09:40,167 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 20:09:40,168 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_0720.c [2021-02-21 20:09:40,176 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/347fde0a3/f0a1c93a4ac24f9cb47b7829a3838a7e/FLAGafbc21608 [2021-02-21 20:09:40,490 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/347fde0a3/f0a1c93a4ac24f9cb47b7829a3838a7e [2021-02-21 20:09:40,493 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 20:09:40,510 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 20:09:40,513 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 20:09:40,514 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 20:09:40,518 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 20:09:40,519 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 08:09:40" (1/1) ... [2021-02-21 20:09:40,521 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77c61d06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:09:40, skipping insertion in model container [2021-02-21 20:09:40,521 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 08:09:40" (1/1) ... [2021-02-21 20:09:40,532 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 20:09:40,569 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 20:09:40,828 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_0720.c[3072,3085] [2021-02-21 20:09:40,832 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 20:09:40,845 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 20:09:40,944 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_0720.c[3072,3085] [2021-02-21 20:09:40,945 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 20:09:40,978 INFO L208 MainTranslator]: Completed translation [2021-02-21 20:09:40,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:09:40 WrapperNode [2021-02-21 20:09:40,979 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 20:09:40,981 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 20:09:40,981 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 20:09:40,982 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 20:09:40,999 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:09:40" (1/1) ... [2021-02-21 20:09:41,000 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:09:40" (1/1) ... [2021-02-21 20:09:41,026 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:09:40" (1/1) ... [2021-02-21 20:09:41,027 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:09:40" (1/1) ... [2021-02-21 20:09:41,062 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:09:40" (1/1) ... [2021-02-21 20:09:41,076 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:09:40" (1/1) ... [2021-02-21 20:09:41,081 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:09:40" (1/1) ... [2021-02-21 20:09:41,090 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 20:09:41,094 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 20:09:41,096 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 20:09:41,096 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 20:09:41,097 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:09:40" (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 20:09:41,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 20:09:41,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 20:09:41,189 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 20:09:41,189 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2021-02-21 20:09:41,190 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrt [2021-02-21 20:09:41,190 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 20:09:41,190 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 20:09:41,190 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 20:09:41,190 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 20:09:41,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 20:09:41,191 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2021-02-21 20:09:41,191 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2021-02-21 20:09:41,191 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrt [2021-02-21 20:09:41,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-21 20:09:41,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 20:09:41,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 20:09:41,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 20:09:41,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-21 20:09:41,192 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 20:09:41,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 20:09:41,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 20:09:41,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 20:09:41,902 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 20:09:41,902 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-02-21 20:09:41,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 08:09:41 BoogieIcfgContainer [2021-02-21 20:09:41,904 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 20:09:41,906 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 20:09:41,907 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 20:09:41,910 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 20:09:41,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 08:09:40" (1/3) ... [2021-02-21 20:09:41,912 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d0ffe93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 08:09:41, skipping insertion in model container [2021-02-21 20:09:41,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:09:40" (2/3) ... [2021-02-21 20:09:41,912 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d0ffe93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 08:09:41, skipping insertion in model container [2021-02-21 20:09:41,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 08:09:41" (3/3) ... [2021-02-21 20:09:41,914 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0720.c [2021-02-21 20:09:41,921 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 20:09:41,926 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 20:09:41,946 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 20:09:41,971 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 20:09:41,971 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 20:09:41,972 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 20:09:41,972 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 20:09:41,972 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 20:09:41,972 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 20:09:41,972 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 20:09:41,973 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 20:09:41,992 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states. [2021-02-21 20:09:42,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-02-21 20:09:42,004 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:09:42,005 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] [2021-02-21 20:09:42,005 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:09:42,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:09:42,012 INFO L82 PathProgramCache]: Analyzing trace with hash -577016850, now seen corresponding path program 1 times [2021-02-21 20:09:42,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:09:42,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [764548918] [2021-02-21 20:09:42,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:09:42,106 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:09:42,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:09:42,302 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:09:42,304 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:09:42,306 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:09:42,309 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:09:42,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:09:42,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:09:42,408 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:09:42,409 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:09:42,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-21 20:09:42,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:09:42,446 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:09:42,447 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:09:42,449 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:09:42,449 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:09:42,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-02-21 20:09:42,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:09:42,463 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:09:42,463 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:09:42,472 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 20:09:42,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [764548918] [2021-02-21 20:09:42,476 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:09:42,476 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 20:09:42,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236371911] [2021-02-21 20:09:42,482 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 20:09:42,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:09:42,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 20:09:42,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 20:09:42,500 INFO L87 Difference]: Start difference. First operand 149 states. Second operand 4 states. [2021-02-21 20:09:43,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:09:43,252 INFO L93 Difference]: Finished difference Result 267 states and 323 transitions. [2021-02-21 20:09:43,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 20:09:43,254 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2021-02-21 20:09:43,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:09:43,268 INFO L225 Difference]: With dead ends: 267 [2021-02-21 20:09:43,268 INFO L226 Difference]: Without dead ends: 142 [2021-02-21 20:09:43,273 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 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 20:09:43,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-02-21 20:09:43,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2021-02-21 20:09:43,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2021-02-21 20:09:43,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 161 transitions. [2021-02-21 20:09:43,369 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 161 transitions. Word has length 46 [2021-02-21 20:09:43,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:09:43,370 INFO L480 AbstractCegarLoop]: Abstraction has 142 states and 161 transitions. [2021-02-21 20:09:43,370 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 20:09:43,370 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 161 transitions. [2021-02-21 20:09:43,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-02-21 20:09:43,373 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:09:43,373 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] [2021-02-21 20:09:43,373 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 20:09:43,374 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:09:43,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:09:43,374 INFO L82 PathProgramCache]: Analyzing trace with hash -798807434, now seen corresponding path program 1 times [2021-02-21 20:09:43,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:09:43,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1404677972] [2021-02-21 20:09:43,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:09:43,379 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:09:43,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 20:09:43,424 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 20:09:43,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 20:09:43,463 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 20:09:43,504 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-21 20:09:43,505 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 20:09:43,506 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 20:09:43,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 08:09:43 BoogieIcfgContainer [2021-02-21 20:09:43,524 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 20:09:43,526 INFO L168 Benchmark]: Toolchain (without parser) took 3028.61 ms. Allocated memory was 157.3 MB in the beginning and 201.3 MB in the end (delta: 44.0 MB). Free memory was 132.9 MB in the beginning and 170.0 MB in the end (delta: -37.1 MB). Peak memory consumption was 8.0 MB. Max. memory is 8.0 GB. [2021-02-21 20:09:43,527 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 157.3 MB. Free memory is still 132.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 20:09:43,528 INFO L168 Benchmark]: CACSL2BoogieTranslator took 466.44 ms. Allocated memory is still 157.3 MB. Free memory was 131.8 MB in the beginning and 119.8 MB in the end (delta: 12.0 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-02-21 20:09:43,529 INFO L168 Benchmark]: Boogie Preprocessor took 108.98 ms. Allocated memory is still 157.3 MB. Free memory was 119.7 MB in the beginning and 117.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-21 20:09:43,530 INFO L168 Benchmark]: RCFGBuilder took 810.66 ms. Allocated memory is still 157.3 MB. Free memory was 117.6 MB in the beginning and 127.6 MB in the end (delta: -10.0 MB). Peak memory consumption was 24.2 MB. Max. memory is 8.0 GB. [2021-02-21 20:09:43,531 INFO L168 Benchmark]: TraceAbstraction took 1617.91 ms. Allocated memory was 157.3 MB in the beginning and 201.3 MB in the end (delta: 44.0 MB). Free memory was 127.6 MB in the beginning and 170.0 MB in the end (delta: -42.4 MB). Peak memory consumption was 2.7 MB. Max. memory is 8.0 GB. [2021-02-21 20:09:43,535 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 157.3 MB. Free memory is still 132.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 466.44 ms. Allocated memory is still 157.3 MB. Free memory was 131.8 MB in the beginning and 119.8 MB in the end (delta: 12.0 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 108.98 ms. Allocated memory is still 157.3 MB. Free memory was 119.7 MB in the beginning and 117.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 810.66 ms. Allocated memory is still 157.3 MB. Free memory was 117.6 MB in the beginning and 127.6 MB in the end (delta: -10.0 MB). Peak memory consumption was 24.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1617.91 ms. Allocated memory was 157.3 MB in the beginning and 201.3 MB in the end (delta: 44.0 MB). Free memory was 127.6 MB in the beginning and 170.0 MB in the end (delta: -42.4 MB). Peak memory consumption was 2.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 147]: 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 20, overapproximation of someBinaryArithmeticDOUBLEoperation at line 38, overapproximation of bitwiseAnd at line 37. Possible FailurePath: [L22] static const double one_sqrt = 1.0, tiny_sqrt = 1.0e-300; [L141] double x = 0.0 / 0.0; [L143] CALL, EXPR __ieee754_sqrt(x) [L25] double z; [L26] __int32_t sign = 0x80000000; [L27] __uint32_t r, t1, s1, ix1, q1; [L28] __int32_t ix0, s0, q, m, t, i; [L31] ieee_double_shape_type ew_u; [L32] ew_u.value = (x) [L33] EXPR ew_u.parts.msw [L33] (ix0) = ew_u.parts.msw [L34] EXPR ew_u.parts.lsw [L34] (ix1) = ew_u.parts.lsw [L37] COND TRUE (ix0 & 0x7ff00000) == 0x7ff00000 [L38] return x * x + x; [L143] RET, EXPR __ieee754_sqrt(x) [L143] double res = __ieee754_sqrt(x); [L146] CALL, EXPR isnan_double(res) [L20] return x != x; [L146] RET, EXPR isnan_double(res) [L146] COND TRUE !isnan_double(res) [L147] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 152 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: 165 SDtfs, 37 SDslu, 127 SDs, 0 SdLazy, 164 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=149occurred 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...