/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_1131a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 17:37:22,837 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 17:37:22,840 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 17:37:22,879 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-23 17:37:22,895 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 17:37:22,897 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 17:37:22,898 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 17:37:22,900 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 17:37:22,901 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 17:37:22,902 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 17:37:22,904 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 17:37:22,907 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 17:37:22,910 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 17:37:22,915 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 17:37:22,916 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 17:37:22,918 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 17:37:22,945 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 17:37:22,959 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 17:37:22,960 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 17:37:22,962 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 17:37:22,963 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 17:37:22,977 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 17:37:22,977 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 17:37:22,979 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 17:37:22,979 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 17:37:22,980 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 17:37:22,980 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 17:37:22,980 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 17:37:22,981 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 17:37:22,981 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 17:37:22,981 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 17:37:22,981 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 17:37:22,982 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 17:37:22,982 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 17:37:22,982 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 17:37:22,983 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 17:37:22,983 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 17:37:22,983 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 17:37:22,983 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 17:37:22,984 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 17:37:22,984 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 17:37:22,984 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 17:37:22,985 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 17:37:22,985 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 17:37:23,413 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 17:37:23,448 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 17:37:23,452 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 17:37:23,453 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 17:37:23,454 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 17:37:23,455 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c [2021-02-23 17:37:23,544 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a90ab0c0d/676bf1355e7e4f9f9db8230c33cf1225/FLAG6a9e706ea [2021-02-23 17:37:24,342 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 17:37:24,345 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c [2021-02-23 17:37:24,355 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a90ab0c0d/676bf1355e7e4f9f9db8230c33cf1225/FLAG6a9e706ea [2021-02-23 17:37:24,641 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a90ab0c0d/676bf1355e7e4f9f9db8230c33cf1225 [2021-02-23 17:37:24,646 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 17:37:24,661 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 17:37:24,665 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 17:37:24,665 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 17:37:24,670 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 17:37:24,671 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 05:37:24" (1/1) ... [2021-02-23 17:37:24,672 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28a9e3d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:24, skipping insertion in model container [2021-02-23 17:37:24,672 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 05:37:24" (1/1) ... [2021-02-23 17:37:24,681 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 17:37:24,724 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 17:37:24,933 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_1131a.c[4189,4202] [2021-02-23 17:37:24,937 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 17:37:24,947 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 17:37:25,033 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_1131a.c[4189,4202] [2021-02-23 17:37:25,040 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 17:37:25,065 INFO L208 MainTranslator]: Completed translation [2021-02-23 17:37:25,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:25 WrapperNode [2021-02-23 17:37:25,066 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 17:37:25,068 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 17:37:25,068 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 17:37:25,068 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 17:37:25,081 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:25" (1/1) ... [2021-02-23 17:37:25,081 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:25" (1/1) ... [2021-02-23 17:37:25,093 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:25" (1/1) ... [2021-02-23 17:37:25,093 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:25" (1/1) ... [2021-02-23 17:37:25,111 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:25" (1/1) ... [2021-02-23 17:37:25,131 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:25" (1/1) ... [2021-02-23 17:37:25,137 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:25" (1/1) ... [2021-02-23 17:37:25,146 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 17:37:25,147 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 17:37:25,147 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 17:37:25,147 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 17:37:25,148 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:25" (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 [2021-02-23 17:37:25,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 17:37:25,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 17:37:25,249 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 17:37:25,249 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2021-02-23 17:37:25,249 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2021-02-23 17:37:25,249 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2021-02-23 17:37:25,250 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 17:37:25,250 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 17:37:25,250 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 17:37:25,250 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 17:37:25,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 17:37:25,251 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2021-02-23 17:37:25,251 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2021-02-23 17:37:25,251 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2021-02-23 17:37:25,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-23 17:37:25,251 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 17:37:25,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 17:37:25,252 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-23 17:37:25,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 17:37:25,252 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2021-02-23 17:37:25,252 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 17:37:25,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 17:37:25,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 17:37:25,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-02-23 17:37:25,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 17:37:26,154 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 17:37:26,154 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-02-23 17:37:26,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 05:37:26 BoogieIcfgContainer [2021-02-23 17:37:26,158 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 17:37:26,164 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 17:37:26,164 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 17:37:26,168 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 17:37:26,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 05:37:24" (1/3) ... [2021-02-23 17:37:26,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dd202e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 05:37:26, skipping insertion in model container [2021-02-23 17:37:26,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:25" (2/3) ... [2021-02-23 17:37:26,170 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dd202e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 05:37:26, skipping insertion in model container [2021-02-23 17:37:26,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 05:37:26" (3/3) ... [2021-02-23 17:37:26,173 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131a.c [2021-02-23 17:37:26,180 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 17:37:26,186 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 17:37:26,211 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 17:37:26,255 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 17:37:26,255 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 17:37:26,255 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 17:37:26,256 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 17:37:26,256 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 17:37:26,256 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 17:37:26,256 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 17:37:26,256 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 17:37:26,285 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states. [2021-02-23 17:37:26,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-02-23 17:37:26,305 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:37:26,306 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] [2021-02-23 17:37:26,307 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:37:26,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:37:26,316 INFO L82 PathProgramCache]: Analyzing trace with hash 391415441, now seen corresponding path program 1 times [2021-02-23 17:37:26,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:37:26,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [980940628] [2021-02-23 17:37:26,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:37:26,422 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:37:26,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:37:26,558 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:26,559 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:37:26,560 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:26,561 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:37:26,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:37:26,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:37:26,632 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:26,633 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:37:26,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-02-23 17:37:26,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:37:26,653 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:26,654 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:37:26,658 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:26,659 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:37:26,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-23 17:37:26,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:37:26,670 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:26,671 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:37:26,671 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:26,672 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:37:26,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 17:37:26,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [980940628] [2021-02-23 17:37:26,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:37:26,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 17:37:26,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131939713] [2021-02-23 17:37:26,698 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 17:37:26,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:37:26,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 17:37:26,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 17:37:26,739 INFO L87 Difference]: Start difference. First operand 205 states. Second operand 4 states. [2021-02-23 17:37:27,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:37:27,342 INFO L93 Difference]: Finished difference Result 387 states and 476 transitions. [2021-02-23 17:37:27,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 17:37:27,344 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2021-02-23 17:37:27,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:37:27,357 INFO L225 Difference]: With dead ends: 387 [2021-02-23 17:37:27,357 INFO L226 Difference]: Without dead ends: 198 [2021-02-23 17:37:27,363 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 17:37:27,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-02-23 17:37:27,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2021-02-23 17:37:27,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2021-02-23 17:37:27,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 224 transitions. [2021-02-23 17:37:27,462 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 224 transitions. Word has length 56 [2021-02-23 17:37:27,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:37:27,463 INFO L480 AbstractCegarLoop]: Abstraction has 198 states and 224 transitions. [2021-02-23 17:37:27,463 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 17:37:27,463 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 224 transitions. [2021-02-23 17:37:27,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-02-23 17:37:27,469 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:37:27,470 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:37:27,470 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 17:37:27,470 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:37:27,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:37:27,471 INFO L82 PathProgramCache]: Analyzing trace with hash 2074926727, now seen corresponding path program 1 times [2021-02-23 17:37:27,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:37:27,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [315263451] [2021-02-23 17:37:27,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:37:27,475 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:37:27,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 17:37:27,621 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 17:37:27,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 17:37:27,752 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 17:37:27,798 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 17:37:27,798 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 17:37:27,799 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 17:37:27,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 05:37:27 BoogieIcfgContainer [2021-02-23 17:37:27,820 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 17:37:27,823 INFO L168 Benchmark]: Toolchain (without parser) took 3173.52 ms. Allocated memory was 164.6 MB in the beginning and 212.9 MB in the end (delta: 48.2 MB). Free memory was 140.6 MB in the beginning and 188.0 MB in the end (delta: -47.4 MB). Peak memory consumption was 80.0 MB. Max. memory is 8.0 GB. [2021-02-23 17:37:27,824 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 164.6 MB. Free memory was 139.8 MB in the beginning and 139.7 MB in the end (delta: 82.7 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 17:37:27,825 INFO L168 Benchmark]: CACSL2BoogieTranslator took 401.64 ms. Allocated memory is still 164.6 MB. Free memory was 139.6 MB in the beginning and 126.5 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-02-23 17:37:27,825 INFO L168 Benchmark]: Boogie Preprocessor took 78.26 ms. Allocated memory is still 164.6 MB. Free memory was 126.3 MB in the beginning and 124.1 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-23 17:37:27,826 INFO L168 Benchmark]: RCFGBuilder took 1011.28 ms. Allocated memory is still 164.6 MB. Free memory was 124.1 MB in the beginning and 112.1 MB in the end (delta: 11.9 MB). Peak memory consumption was 12.7 MB. Max. memory is 8.0 GB. [2021-02-23 17:37:27,827 INFO L168 Benchmark]: TraceAbstraction took 1656.58 ms. Allocated memory was 164.6 MB in the beginning and 212.9 MB in the end (delta: 48.2 MB). Free memory was 112.1 MB in the beginning and 188.0 MB in the end (delta: -75.9 MB). Peak memory consumption was 51.5 MB. Max. memory is 8.0 GB. [2021-02-23 17:37:27,831 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 164.6 MB. Free memory was 139.8 MB in the beginning and 139.7 MB in the end (delta: 82.7 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 401.64 ms. Allocated memory is still 164.6 MB. Free memory was 139.6 MB in the beginning and 126.5 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 78.26 ms. Allocated memory is still 164.6 MB. Free memory was 126.3 MB in the beginning and 124.1 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1011.28 ms. Allocated memory is still 164.6 MB. Free memory was 124.1 MB in the beginning and 112.1 MB in the end (delta: 11.9 MB). Peak memory consumption was 12.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1656.58 ms. Allocated memory was 164.6 MB in the beginning and 212.9 MB in the end (delta: 48.2 MB). Free memory was 112.1 MB in the beginning and 188.0 MB in the end (delta: -75.9 MB). Peak memory consumption was 51.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 191]: 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 46, overapproximation of someUnaryDOUBLEoperation at line 22, overapproximation of someBinaryArithmeticDOUBLEoperation at line 47, overapproximation of bitwiseAnd at line 43, overapproximation of someBinaryDOUBLEComparisonOperation at line 190, overapproximation of bitwiseXor at line 42. Possible FailurePath: [L20-L23] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L182] double y = 1.0 / 0.0; [L183] double x = __VERIFIER_nondet_double(); [L185] CALL isfinite_double(x) [L166] __int32_t hx; [L168] ieee_double_shape_type gh_u; [L169] gh_u.value = (x) [L170] EXPR gh_u.parts.msw [L170] (hx) = gh_u.parts.msw [L172] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); [L185] RET isfinite_double(x) [L185] COND TRUE isfinite_double(x) [L187] CALL, EXPR fmod_double(x, y) [L26] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L27] __uint32_t lx, ly, lz; [L30] ieee_double_shape_type ew_u; [L31] ew_u.value = (x) [L32] EXPR ew_u.parts.msw [L32] (hx) = ew_u.parts.msw [L33] EXPR ew_u.parts.lsw [L33] (lx) = ew_u.parts.lsw [L36] ieee_double_shape_type ew_u; [L37] ew_u.value = (y) [L38] EXPR ew_u.parts.msw [L38] (hy) = ew_u.parts.msw [L39] EXPR ew_u.parts.lsw [L39] (ly) = ew_u.parts.lsw [L41] sx = hx & 0x80000000 [L42] hx ^= sx [L43] hy &= 0x7fffffff [L45-L46] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L47] return (x * y) / (x * y); [L187] RET, EXPR fmod_double(x, y) [L187] double res = fmod_double(x, y); [L190] COND TRUE res != x [L191] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 212 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 228 SDtfs, 37 SDslu, 175 SDs, 0 SdLazy, 245 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=205occurred 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...