/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/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 03:55:32,748 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 03:55:32,751 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 03:55:32,786 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-24 03:55:32,787 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-24 03:55:32,789 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-24 03:55:32,790 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-24 03:55:32,793 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-24 03:55:32,795 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-24 03:55:32,797 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-24 03:55:32,815 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-24 03:55:32,817 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-24 03:55:32,817 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 03:55:32,819 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 03:55:32,820 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 03:55:32,821 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 03:55:32,823 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 03:55:32,824 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 03:55:32,826 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 03:55:32,828 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 03:55:32,830 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 03:55:32,832 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 03:55:32,834 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 03:55:32,835 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 03:55:32,838 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-24 03:55:32,849 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 03:55:32,850 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 03:55:32,851 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 03:55:32,852 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-24 03:55:32,865 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 03:55:32,865 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 03:55:32,867 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 03:55:32,867 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 03:55:32,867 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 03:55:32,868 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 03:55:32,868 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 03:55:32,868 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 03:55:32,868 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 03:55:32,869 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 03:55:32,869 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 03:55:32,869 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 03:55:32,870 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 03:55:32,870 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 03:55:32,870 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 03:55:32,870 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 03:55:32,871 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 03:55:32,871 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 03:55:32,871 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 03:55:32,872 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 03:55:32,872 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 03:55:32,872 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 03:55:32,872 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-24 03:55:32,873 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-24 03:55:33,249 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 03:55:33,282 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 03:55:33,286 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 03:55:33,288 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 03:55:33,290 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 03:55:33,291 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2021-02-24 03:55:33,396 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d197af00/8d8ff9c840c64a6a9e5df4d2fe681c00/FLAGb2ed90d2f [2021-02-24 03:55:34,071 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 03:55:34,072 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2021-02-24 03:55:34,084 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d197af00/8d8ff9c840c64a6a9e5df4d2fe681c00/FLAGb2ed90d2f [2021-02-24 03:55:34,443 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d197af00/8d8ff9c840c64a6a9e5df4d2fe681c00 [2021-02-24 03:55:34,447 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 03:55:34,464 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 03:55:34,469 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 03:55:34,470 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 03:55:34,474 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 03:55:34,475 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 03:55:34" (1/1) ... [2021-02-24 03:55:34,477 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b48773e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:34, skipping insertion in model container [2021-02-24 03:55:34,477 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 03:55:34" (1/1) ... [2021-02-24 03:55:34,487 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 03:55:34,531 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 03:55:34,896 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_1130a.c[4166,4179] [2021-02-24 03:55:34,900 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 03:55:34,909 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 03:55:34,955 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_1130a.c[4166,4179] [2021-02-24 03:55:34,956 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 03:55:34,975 INFO L208 MainTranslator]: Completed translation [2021-02-24 03:55:34,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:34 WrapperNode [2021-02-24 03:55:34,976 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 03:55:34,977 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 03:55:34,977 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 03:55:34,977 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 03:55:34,992 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:34" (1/1) ... [2021-02-24 03:55:34,992 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:34" (1/1) ... [2021-02-24 03:55:35,005 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:34" (1/1) ... [2021-02-24 03:55:35,006 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:34" (1/1) ... [2021-02-24 03:55:35,023 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:34" (1/1) ... [2021-02-24 03:55:35,041 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:34" (1/1) ... [2021-02-24 03:55:35,044 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:34" (1/1) ... [2021-02-24 03:55:35,049 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 03:55:35,050 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 03:55:35,050 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 03:55:35,050 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 03:55:35,051 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:34" (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 [2021-02-24 03:55:35,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 03:55:35,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 03:55:35,172 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 03:55:35,172 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2021-02-24 03:55:35,172 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2021-02-24 03:55:35,173 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2021-02-24 03:55:35,173 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 03:55:35,173 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 03:55:35,174 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 03:55:35,174 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 03:55:35,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 03:55:35,175 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2021-02-24 03:55:35,175 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2021-02-24 03:55:35,176 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2021-02-24 03:55:35,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-24 03:55:35,177 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 03:55:35,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 03:55:35,178 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-24 03:55:35,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 03:55:35,181 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2021-02-24 03:55:35,181 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 03:55:35,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 03:55:35,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 03:55:35,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-02-24 03:55:35,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 03:55:36,317 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 03:55:36,318 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-02-24 03:55:36,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 03:55:36 BoogieIcfgContainer [2021-02-24 03:55:36,320 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 03:55:36,322 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 03:55:36,322 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 03:55:36,326 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 03:55:36,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 03:55:34" (1/3) ... [2021-02-24 03:55:36,327 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60820fb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 03:55:36, skipping insertion in model container [2021-02-24 03:55:36,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:34" (2/3) ... [2021-02-24 03:55:36,328 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60820fb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 03:55:36, skipping insertion in model container [2021-02-24 03:55:36,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 03:55:36" (3/3) ... [2021-02-24 03:55:36,329 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1130a.c [2021-02-24 03:55:36,337 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 03:55:36,343 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 03:55:36,362 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 03:55:36,386 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 03:55:36,386 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 03:55:36,386 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-24 03:55:36,386 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 03:55:36,386 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 03:55:36,387 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 03:55:36,387 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 03:55:36,387 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 03:55:36,409 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states. [2021-02-24 03:55:36,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-02-24 03:55:36,422 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:55:36,423 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] [2021-02-24 03:55:36,424 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:55:36,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:55:36,434 INFO L82 PathProgramCache]: Analyzing trace with hash 783378974, now seen corresponding path program 1 times [2021-02-24 03:55:36,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:55:36,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1176400511] [2021-02-24 03:55:36,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:55:36,531 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:55:36,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:55:36,713 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:36,715 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:55:36,717 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:36,719 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:55:36,854 WARN L202 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2021-02-24 03:55:36,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:55:36,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:55:36,915 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:36,916 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:55:36,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-02-24 03:55:36,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:55:36,989 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:36,993 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:55:36,997 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:36,998 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:55:37,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:55:37,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1176400511] [2021-02-24 03:55:37,026 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:55:37,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-24 03:55:37,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138892956] [2021-02-24 03:55:37,034 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-24 03:55:37,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:55:37,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-24 03:55:37,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 03:55:37,057 INFO L87 Difference]: Start difference. First operand 210 states. Second operand 4 states. [2021-02-24 03:55:38,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:55:38,122 INFO L93 Difference]: Finished difference Result 388 states and 478 transitions. [2021-02-24 03:55:38,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-24 03:55:38,124 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2021-02-24 03:55:38,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:55:38,138 INFO L225 Difference]: With dead ends: 388 [2021-02-24 03:55:38,138 INFO L226 Difference]: Without dead ends: 202 [2021-02-24 03:55:38,143 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-24 03:55:38,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-02-24 03:55:38,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2021-02-24 03:55:38,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2021-02-24 03:55:38,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 229 transitions. [2021-02-24 03:55:38,215 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 229 transitions. Word has length 51 [2021-02-24 03:55:38,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:55:38,216 INFO L480 AbstractCegarLoop]: Abstraction has 202 states and 229 transitions. [2021-02-24 03:55:38,216 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-24 03:55:38,216 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 229 transitions. [2021-02-24 03:55:38,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-02-24 03:55:38,220 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:55:38,220 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] [2021-02-24 03:55:38,220 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 03:55:38,220 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:55:38,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:55:38,221 INFO L82 PathProgramCache]: Analyzing trace with hash 1917323870, now seen corresponding path program 1 times [2021-02-24 03:55:38,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:55:38,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [330809574] [2021-02-24 03:55:38,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:55:38,225 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:55:38,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 03:55:38,336 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 03:55:38,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 03:55:38,415 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 03:55:38,458 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-24 03:55:38,458 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-24 03:55:38,459 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 03:55:38,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 03:55:38 BoogieIcfgContainer [2021-02-24 03:55:38,478 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 03:55:38,480 INFO L168 Benchmark]: Toolchain (without parser) took 4028.80 ms. Allocated memory was 154.1 MB in the beginning and 221.2 MB in the end (delta: 67.1 MB). Free memory was 129.1 MB in the beginning and 181.9 MB in the end (delta: -52.8 MB). Peak memory consumption was 15.4 MB. Max. memory is 8.0 GB. [2021-02-24 03:55:38,481 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 154.1 MB. Free memory was 127.1 MB in the beginning and 127.0 MB in the end (delta: 101.6 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 03:55:38,482 INFO L168 Benchmark]: CACSL2BoogieTranslator took 507.14 ms. Allocated memory is still 154.1 MB. Free memory was 128.1 MB in the beginning and 114.9 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-02-24 03:55:38,483 INFO L168 Benchmark]: Boogie Preprocessor took 71.89 ms. Allocated memory is still 154.1 MB. Free memory was 114.9 MB in the beginning and 112.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-24 03:55:38,484 INFO L168 Benchmark]: RCFGBuilder took 1270.17 ms. Allocated memory is still 154.1 MB. Free memory was 112.4 MB in the beginning and 102.4 MB in the end (delta: 10.0 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-02-24 03:55:38,485 INFO L168 Benchmark]: TraceAbstraction took 2156.68 ms. Allocated memory was 154.1 MB in the beginning and 221.2 MB in the end (delta: 67.1 MB). Free memory was 101.9 MB in the beginning and 181.9 MB in the end (delta: -80.1 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 03:55:38,489 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 154.1 MB. Free memory was 127.1 MB in the beginning and 127.0 MB in the end (delta: 101.6 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 507.14 ms. Allocated memory is still 154.1 MB. Free memory was 128.1 MB in the beginning and 114.9 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 71.89 ms. Allocated memory is still 154.1 MB. Free memory was 114.9 MB in the beginning and 112.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1270.17 ms. Allocated memory is still 154.1 MB. Free memory was 112.4 MB in the beginning and 102.4 MB in the end (delta: 10.0 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2156.68 ms. Allocated memory was 154.1 MB in the beginning and 221.2 MB in the end (delta: 67.1 MB). Free memory was 101.9 MB in the beginning and 181.9 MB in the end (delta: -80.1 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 193]: 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 bitwiseAnd at line 43, overapproximation of someBinaryArithmeticDOUBLEoperation at line 47, overapproximation of someBinaryDOUBLEComparisonOperation at line 192, overapproximation of bitwiseXor at line 42. Possible FailurePath: [L20-L23] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L184] double x = 0.0; [L185] double y = __VERIFIER_nondet_double(); [L187] COND TRUE y < 0.0 || y > 0.0 [L189] CALL, EXPR fmod_double(x, y) [L26] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L27] __uint32_t lx, ly, lz; [L30] ieee_double_shape_type ew_u; [L31] ew_u.value = (x) [L32] EXPR ew_u.parts.msw [L32] (hx) = ew_u.parts.msw [L33] EXPR ew_u.parts.lsw [L33] (lx) = ew_u.parts.lsw [L36] ieee_double_shape_type ew_u; [L37] ew_u.value = (y) [L38] EXPR ew_u.parts.msw [L38] (hy) = ew_u.parts.msw [L39] EXPR ew_u.parts.lsw [L39] (ly) = ew_u.parts.lsw [L41] sx = hx & 0x80000000 [L42] hx ^= sx [L43] hy &= 0x7fffffff [L45-L46] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L47] return (x * y) / (x * y); [L189] RET, EXPR fmod_double(x, y) [L189] double res = fmod_double(x, y); [L192] EXPR res == 0.0 && __signbit_double(res) == 0 [L192] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L193] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 217 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 234 SDtfs, 45 SDslu, 177 SDs, 0 SdLazy, 251 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=210occurred 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...