/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_1012b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 20:09:46,988 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 20:09:46,990 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 20:09:47,028 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 20:09:47,029 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 20:09:47,031 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 20:09:47,032 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 20:09:47,035 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 20:09:47,037 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 20:09:47,038 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 20:09:47,039 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 20:09:47,041 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 20:09:47,041 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 20:09:47,043 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 20:09:47,044 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 20:09:47,056 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 20:09:47,057 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 20:09:47,058 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 20:09:47,061 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 20:09:47,063 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 20:09:47,065 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 20:09:47,066 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 20:09:47,068 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 20:09:47,069 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 20:09:47,072 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 20:09:47,072 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 20:09:47,072 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 20:09:47,074 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 20:09:47,074 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 20:09:47,075 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 20:09:47,076 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 20:09:47,077 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 20:09:47,077 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 20:09:47,078 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 20:09:47,080 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 20:09:47,080 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 20:09:47,081 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 20:09:47,081 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 20:09:47,082 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 20:09:47,083 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 20:09:47,084 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 20:09:47,085 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 20:09:47,097 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 20:09:47,097 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 20:09:47,099 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 20:09:47,099 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 20:09:47,100 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 20:09:47,100 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 20:09:47,100 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 20:09:47,101 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 20:09:47,101 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 20:09:47,101 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 20:09:47,101 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 20:09:47,102 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 20:09:47,102 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 20:09:47,102 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 20:09:47,103 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 20:09:47,103 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 20:09:47,103 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 20:09:47,103 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 20:09:47,104 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 20:09:47,104 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 20:09:47,104 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 20:09:47,104 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 20:09:47,105 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 20:09:47,548 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 20:09:47,573 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 20:09:47,576 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 20:09:47,578 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 20:09:47,579 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 20:09:47,580 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1012b.c [2021-02-21 20:09:47,661 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff3fa67ce/f18908bdf2a9462ba2bb09f962ee2138/FLAGec894a221 [2021-02-21 20:09:48,269 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 20:09:48,270 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1012b.c [2021-02-21 20:09:48,279 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff3fa67ce/f18908bdf2a9462ba2bb09f962ee2138/FLAGec894a221 [2021-02-21 20:09:48,648 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff3fa67ce/f18908bdf2a9462ba2bb09f962ee2138 [2021-02-21 20:09:48,651 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 20:09:48,665 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 20:09:48,673 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 20:09:48,673 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 20:09:48,678 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 20:09:48,678 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 08:09:48" (1/1) ... [2021-02-21 20:09:48,680 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42dd35dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:09:48, skipping insertion in model container [2021-02-21 20:09:48,680 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 08:09:48" (1/1) ... [2021-02-21 20:09:48,690 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 20:09:48,714 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 20:09:48,894 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_1012b.c[1640,1653] [2021-02-21 20:09:48,897 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 20:09:48,908 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 20:09:48,941 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_1012b.c[1640,1653] [2021-02-21 20:09:48,942 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 20:09:48,971 INFO L208 MainTranslator]: Completed translation [2021-02-21 20:09:48,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:09:48 WrapperNode [2021-02-21 20:09:48,972 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 20:09:48,974 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 20:09:48,975 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 20:09:48,975 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 20:09:48,991 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:09:48" (1/1) ... [2021-02-21 20:09:48,992 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:09:48" (1/1) ... [2021-02-21 20:09:49,014 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:09:48" (1/1) ... [2021-02-21 20:09:49,014 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:09:48" (1/1) ... [2021-02-21 20:09:49,041 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:09:48" (1/1) ... [2021-02-21 20:09:49,052 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:09:48" (1/1) ... [2021-02-21 20:09:49,060 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:09:48" (1/1) ... [2021-02-21 20:09:49,064 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 20:09:49,065 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 20:09:49,066 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 20:09:49,066 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 20:09:49,067 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:09:48" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 20:09:49,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 20:09:49,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 20:09:49,196 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 20:09:49,196 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2021-02-21 20:09:49,196 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2021-02-21 20:09:49,197 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_double [2021-02-21 20:09:49,197 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2021-02-21 20:09:49,197 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 20:09:49,197 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 20:09:49,198 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 20:09:49,199 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 20:09:49,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 20:09:49,199 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2021-02-21 20:09:49,199 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2021-02-21 20:09:49,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-21 20:09:49,200 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 20:09:49,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 20:09:49,201 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_double [2021-02-21 20:09:49,202 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2021-02-21 20:09:49,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 20:09:49,206 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-21 20:09:49,206 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 20:09:49,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 20:09:49,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 20:09:49,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 20:09:49,672 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 20:09:49,673 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-02-21 20:09:49,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 08:09:49 BoogieIcfgContainer [2021-02-21 20:09:49,675 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 20:09:49,677 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 20:09:49,677 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 20:09:49,681 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 20:09:49,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 08:09:48" (1/3) ... [2021-02-21 20:09:49,682 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b337f10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 08:09:49, skipping insertion in model container [2021-02-21 20:09:49,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:09:48" (2/3) ... [2021-02-21 20:09:49,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b337f10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 08:09:49, skipping insertion in model container [2021-02-21 20:09:49,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 08:09:49" (3/3) ... [2021-02-21 20:09:49,685 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1012b.c [2021-02-21 20:09:49,693 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 20:09:49,699 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 20:09:49,720 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 20:09:49,745 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 20:09:49,745 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 20:09:49,746 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 20:09:49,746 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 20:09:49,746 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 20:09:49,746 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 20:09:49,746 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 20:09:49,747 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 20:09:49,766 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states. [2021-02-21 20:09:49,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-02-21 20:09:49,778 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:09:49,779 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 20:09:49,779 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:09:49,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:09:49,789 INFO L82 PathProgramCache]: Analyzing trace with hash 2068245769, now seen corresponding path program 1 times [2021-02-21 20:09:49,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:09:49,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1852716830] [2021-02-21 20:09:49,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:09:49,929 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:09:50,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:09:50,106 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:09:50,107 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:09:50,110 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:09:50,111 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:09:50,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:09:50,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:09:50,232 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:09:50,233 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:09:50,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-21 20:09:50,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:09:50,259 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:09:50,260 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:09:50,261 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:09:50,261 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:09:50,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-02-21 20:09:50,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:09:50,271 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:09:50,272 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:09:50,273 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:09:50,274 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:09:50,287 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 20:09:50,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1852716830] [2021-02-21 20:09:50,291 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:09:50,292 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 20:09:50,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260937517] [2021-02-21 20:09:50,298 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 20:09:50,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:09:50,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 20:09:50,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 20:09:50,316 INFO L87 Difference]: Start difference. First operand 71 states. Second operand 4 states. [2021-02-21 20:09:50,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:09:50,661 INFO L93 Difference]: Finished difference Result 125 states and 138 transitions. [2021-02-21 20:09:50,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 20:09:50,663 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2021-02-21 20:09:50,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:09:50,676 INFO L225 Difference]: With dead ends: 125 [2021-02-21 20:09:50,676 INFO L226 Difference]: Without dead ends: 64 [2021-02-21 20:09:50,681 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-21 20:09:50,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-02-21 20:09:50,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-02-21 20:09:50,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2021-02-21 20:09:50,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 63 transitions. [2021-02-21 20:09:50,753 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 63 transitions. Word has length 38 [2021-02-21 20:09:50,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:09:50,754 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 63 transitions. [2021-02-21 20:09:50,755 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 20:09:50,755 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 63 transitions. [2021-02-21 20:09:50,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-02-21 20:09:50,759 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:09:50,760 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 20:09:50,760 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 20:09:50,760 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:09:50,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:09:50,763 INFO L82 PathProgramCache]: Analyzing trace with hash -275805674, now seen corresponding path program 1 times [2021-02-21 20:09:50,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:09:50,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [257731454] [2021-02-21 20:09:50,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:09:50,774 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:09:50,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 20:09:50,990 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 20:09:51,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 20:09:51,075 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 20:09:51,115 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-21 20:09:51,115 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 20:09:51,116 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 20:09:51,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 08:09:51 BoogieIcfgContainer [2021-02-21 20:09:51,137 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 20:09:51,139 INFO L168 Benchmark]: Toolchain (without parser) took 2484.54 ms. Allocated memory is still 151.0 MB. Free memory was 127.7 MB in the beginning and 106.0 MB in the end (delta: 21.7 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2021-02-21 20:09:51,140 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 151.0 MB. Free memory was 124.8 MB in the beginning and 124.6 MB in the end (delta: 214.5 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 20:09:51,141 INFO L168 Benchmark]: CACSL2BoogieTranslator took 300.00 ms. Allocated memory is still 151.0 MB. Free memory was 126.6 MB in the beginning and 116.3 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-21 20:09:51,142 INFO L168 Benchmark]: Boogie Preprocessor took 90.21 ms. Allocated memory is still 151.0 MB. Free memory was 116.2 MB in the beginning and 114.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-21 20:09:51,143 INFO L168 Benchmark]: RCFGBuilder took 610.02 ms. Allocated memory is still 151.0 MB. Free memory was 114.5 MB in the beginning and 122.4 MB in the end (delta: -7.9 MB). Peak memory consumption was 15.6 MB. Max. memory is 8.0 GB. [2021-02-21 20:09:51,144 INFO L168 Benchmark]: TraceAbstraction took 1459.75 ms. Allocated memory is still 151.0 MB. Free memory was 122.0 MB in the beginning and 106.0 MB in the end (delta: 16.0 MB). Peak memory consumption was 15.8 MB. Max. memory is 8.0 GB. [2021-02-21 20:09:51,147 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 151.0 MB. Free memory was 124.8 MB in the beginning and 124.6 MB in the end (delta: 214.5 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 300.00 ms. Allocated memory is still 151.0 MB. Free memory was 126.6 MB in the beginning and 116.3 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 90.21 ms. Allocated memory is still 151.0 MB. Free memory was 116.2 MB in the beginning and 114.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 610.02 ms. Allocated memory is still 151.0 MB. Free memory was 114.5 MB in the beginning and 122.4 MB in the end (delta: -7.9 MB). Peak memory consumption was 15.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1459.75 ms. Allocated memory is still 151.0 MB. Free memory was 122.0 MB in the beginning and 106.0 MB in the end (delta: 16.0 MB). Peak memory consumption was 15.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 75]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 43, overapproximation of someBinaryArithmeticDOUBLEoperation at line 70, overapproximation of bitwiseAnd at line 40. Possible FailurePath: [L70] double x = -1.0 / 0.0; [L71] CALL, EXPR fabs_double(x) [L47] __uint32_t high; [L49] ieee_double_shape_type gh_u; [L50] gh_u.value = (x) [L51] EXPR gh_u.parts.msw [L51] (high) = gh_u.parts.msw [L54] ieee_double_shape_type sh_u; [L55] sh_u.value = (x) [L56] sh_u.parts.msw = (high & 0x7fffffff) [L57] EXPR sh_u.value [L57] (x) = sh_u.value [L59] return x; [L71] RET, EXPR fabs_double(x) [L71] double res = fabs_double(x); [L74] CALL, EXPR isinf_double(res) [L33] __int32_t hx, lx; [L35] ieee_double_shape_type ew_u; [L36] ew_u.value = (x) [L37] EXPR ew_u.parts.msw [L37] (hx) = ew_u.parts.msw [L38] EXPR ew_u.parts.lsw [L38] (lx) = ew_u.parts.lsw [L40] hx &= 0x7fffffff [L41] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L42] hx = 0x7ff00000 - hx [L43] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L74] RET, EXPR isinf_double(res) [L74] COND TRUE !isinf_double(res) [L75] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 91 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 66 SDtfs, 13 SDslu, 41 SDs, 0 SdLazy, 79 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=71occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...