/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 --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_0686b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 09:06:42,821 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 09:06:42,825 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 09:06:42,880 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 09:06:42,881 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 09:06:42,888 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 09:06:42,890 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 09:06:42,895 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 09:06:42,899 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 09:06:42,907 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 09:06:42,909 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 09:06:42,911 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 09:06:42,911 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 09:06:42,915 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 09:06:42,917 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 09:06:42,919 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 09:06:42,920 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 09:06:42,924 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 09:06:42,933 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 09:06:42,940 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 09:06:42,943 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 09:06:42,945 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 09:06:42,946 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 09:06:42,949 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 09:06:42,979 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 09:06:42,981 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 09:06:42,981 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 09:06:42,983 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 09:06:42,984 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 09:06:42,985 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 09:06:42,986 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 09:06:42,987 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 09:06:42,989 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 09:06:42,991 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 09:06:42,992 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 09:06:42,992 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 09:06:42,993 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 09:06:42,993 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 09:06:42,994 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 09:06:42,995 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 09:06:42,995 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 09:06:42,998 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 09:06:43,050 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 09:06:43,050 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 09:06:43,055 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 09:06:43,055 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 09:06:43,056 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 09:06:43,056 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 09:06:43,056 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 09:06:43,056 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 09:06:43,057 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 09:06:43,057 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 09:06:43,058 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 09:06:43,058 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 09:06:43,059 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 09:06:43,059 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 09:06:43,059 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 09:06:43,059 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 09:06:43,060 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 09:06:43,060 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 09:06:43,060 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 09:06:43,060 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 09:06:43,061 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 09:06:43,061 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:06:43,062 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 09:06:43,062 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 09:06:43,062 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 09:06:43,062 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 09:06:43,062 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 09:06:43,063 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 09:06:43,063 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 09:06:43,063 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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-2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 09:06:43,528 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 09:06:43,554 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 09:06:43,558 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 09:06:43,559 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 09:06:43,560 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 09:06:43,561 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0686b.c [2020-10-29 09:06:43,645 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dd3f8c456/ca7c5de728a44f08bdc01fdbfa4496d6/FLAGce3db353c [2020-10-29 09:06:44,347 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 09:06:44,348 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_0686b.c [2020-10-29 09:06:44,362 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dd3f8c456/ca7c5de728a44f08bdc01fdbfa4496d6/FLAGce3db353c [2020-10-29 09:06:44,637 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dd3f8c456/ca7c5de728a44f08bdc01fdbfa4496d6 [2020-10-29 09:06:44,640 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 09:06:44,647 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 09:06:44,649 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 09:06:44,649 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 09:06:44,653 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 09:06:44,654 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:06:44" (1/1) ... [2020-10-29 09:06:44,658 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ae64eb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:06:44, skipping insertion in model container [2020-10-29 09:06:44,658 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:06:44" (1/1) ... [2020-10-29 09:06:44,667 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 09:06:44,693 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 09:06:44,925 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:06:44,937 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 09:06:45,025 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:06:45,060 INFO L208 MainTranslator]: Completed translation [2020-10-29 09:06:45,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:06:45 WrapperNode [2020-10-29 09:06:45,063 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 09:06:45,064 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 09:06:45,064 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 09:06:45,064 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 09:06:45,077 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:06:45" (1/1) ... [2020-10-29 09:06:45,079 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:06:45" (1/1) ... [2020-10-29 09:06:45,097 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:06:45" (1/1) ... [2020-10-29 09:06:45,097 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:06:45" (1/1) ... [2020-10-29 09:06:45,126 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:06:45" (1/1) ... [2020-10-29 09:06:45,143 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:06:45" (1/1) ... [2020-10-29 09:06:45,147 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:06:45" (1/1) ... [2020-10-29 09:06:45,152 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 09:06:45,153 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 09:06:45,153 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 09:06:45,153 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 09:06:45,154 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:06:45" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-29 09:06:45,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 09:06:45,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 09:06:45,230 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 09:06:45,230 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2020-10-29 09:06:45,230 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_double [2020-10-29 09:06:45,230 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_atan2 [2020-10-29 09:06:45,230 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 09:06:45,231 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 09:06:45,231 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 09:06:45,231 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 09:06:45,231 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 09:06:45,231 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-10-29 09:06:45,231 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2020-10-29 09:06:45,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-29 09:06:45,232 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 09:06:45,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 09:06:45,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 09:06:45,232 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-29 09:06:45,232 INFO L130 BoogieDeclarations]: Found specification of procedure atan_double [2020-10-29 09:06:45,233 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_atan2 [2020-10-29 09:06:45,233 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 09:06:45,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 09:06:45,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 09:06:45,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-29 09:06:45,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 09:06:46,193 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 09:06:46,193 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-29 09:06:46,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:06:46 BoogieIcfgContainer [2020-10-29 09:06:46,195 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 09:06:46,198 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 09:06:46,198 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 09:06:46,202 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 09:06:46,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 09:06:44" (1/3) ... [2020-10-29 09:06:46,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72b9ef47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:06:46, skipping insertion in model container [2020-10-29 09:06:46,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:06:45" (2/3) ... [2020-10-29 09:06:46,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72b9ef47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:06:46, skipping insertion in model container [2020-10-29 09:06:46,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:06:46" (3/3) ... [2020-10-29 09:06:46,206 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0686b.c [2020-10-29 09:06:46,220 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 09:06:46,227 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 09:06:46,244 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 09:06:46,275 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 09:06:46,275 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 09:06:46,275 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 09:06:46,275 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 09:06:46,275 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 09:06:46,276 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 09:06:46,276 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 09:06:46,276 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 09:06:46,297 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states. [2020-10-29 09:06:46,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-29 09:06:46,304 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:06:46,305 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:06:46,306 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:06:46,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:06:46,313 INFO L82 PathProgramCache]: Analyzing trace with hash -7339331, now seen corresponding path program 1 times [2020-10-29 09:06:46,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:06:46,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [208238823] [2020-10-29 09:06:46,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:06:46,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:06:46,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:06:46,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:06:46,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:06:46,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-29 09:06:46,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:06:46,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 344 [2020-10-29 09:06:46,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:06:46,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:06:46,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:06:46,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-29 09:06:46,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:06:46,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 09:06:47,016 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-29 09:06:47,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:06:47,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:06:47,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:06:47,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:06:47,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:06:47,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:06:47,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-29 09:06:47,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:06:47,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:06:47,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:06:47,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:06:47,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:06:47,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:06:47,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:06:47,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:06:47,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:06:47,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:06:47,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:06:47,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 09:06:47,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:06:47,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 09:06:47,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:06:47,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:06:47,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:06:47,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-29 09:06:47,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:06:47,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:06:47,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:06:47,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [208238823] [2020-10-29 09:06:47,186 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:06:47,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 09:06:47,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625958986] [2020-10-29 09:06:47,193 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 09:06:47,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:06:47,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 09:06:47,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 09:06:47,211 INFO L87 Difference]: Start difference. First operand 105 states. Second operand 4 states. [2020-10-29 09:06:47,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:06:47,685 INFO L93 Difference]: Finished difference Result 199 states and 316 transitions. [2020-10-29 09:06:47,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-29 09:06:47,687 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-10-29 09:06:47,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:06:47,698 INFO L225 Difference]: With dead ends: 199 [2020-10-29 09:06:47,699 INFO L226 Difference]: Without dead ends: 98 [2020-10-29 09:06:47,704 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 [2020-10-29 09:06:47,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-29 09:06:47,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2020-10-29 09:06:47,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-29 09:06:47,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 137 transitions. [2020-10-29 09:06:47,764 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 137 transitions. Word has length 19 [2020-10-29 09:06:47,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:06:47,765 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 137 transitions. [2020-10-29 09:06:47,765 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 09:06:47,765 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 137 transitions. [2020-10-29 09:06:47,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-29 09:06:47,766 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:06:47,766 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] [2020-10-29 09:06:47,766 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 09:06:47,767 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:06:47,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:06:47,768 INFO L82 PathProgramCache]: Analyzing trace with hash 1887591124, now seen corresponding path program 1 times [2020-10-29 09:06:47,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:06:47,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1165398445] [2020-10-29 09:06:47,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:06:47,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-29 09:06:47,828 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-29 09:06:47,828 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-29 09:06:47,834 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 09:06:47,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 09:06:47 BoogieIcfgContainer [2020-10-29 09:06:47,854 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 09:06:47,856 INFO L168 Benchmark]: Toolchain (without parser) took 3213.94 ms. Allocated memory is still 155.2 MB. Free memory was 130.7 MB in the beginning and 59.0 MB in the end (delta: 71.7 MB). Peak memory consumption was 72.9 MB. Max. memory is 8.0 GB. [2020-10-29 09:06:47,857 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 155.2 MB. Free memory is still 128.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 09:06:47,858 INFO L168 Benchmark]: CACSL2BoogieTranslator took 414.24 ms. Allocated memory is still 155.2 MB. Free memory was 129.9 MB in the beginning and 115.5 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-10-29 09:06:47,859 INFO L168 Benchmark]: Boogie Preprocessor took 88.54 ms. Allocated memory is still 155.2 MB. Free memory was 115.5 MB in the beginning and 112.5 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-29 09:06:47,860 INFO L168 Benchmark]: RCFGBuilder took 1042.44 ms. Allocated memory is still 155.2 MB. Free memory was 112.4 MB in the beginning and 102.8 MB in the end (delta: 9.6 MB). Peak memory consumption was 10.7 MB. Max. memory is 8.0 GB. [2020-10-29 09:06:47,861 INFO L168 Benchmark]: TraceAbstraction took 1656.79 ms. Allocated memory is still 155.2 MB. Free memory was 102.3 MB in the beginning and 59.0 MB in the end (delta: 43.3 MB). Peak memory consumption was 43.3 MB. Max. memory is 8.0 GB. [2020-10-29 09:06:47,864 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 155.2 MB. Free memory is still 128.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 414.24 ms. Allocated memory is still 155.2 MB. Free memory was 129.9 MB in the beginning and 115.5 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 88.54 ms. Allocated memory is still 155.2 MB. Free memory was 115.5 MB in the beginning and 112.5 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1042.44 ms. Allocated memory is still 155.2 MB. Free memory was 112.4 MB in the beginning and 102.8 MB in the end (delta: 9.6 MB). Peak memory consumption was 10.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1656.79 ms. Allocated memory is still 155.2 MB. Free memory was 102.3 MB in the beginning and 59.0 MB in the end (delta: 43.3 MB). Peak memory consumption was 43.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 164, overapproximation of someUnaryDOUBLEoperation at line 54, overapproximation of someBinaryArithmeticDOUBLEoperation at line 165, overapproximation of bitwiseAnd at line 162, overapproximation of someBinaryDOUBLEComparisonOperation at line 257. Possible FailurePath: [L39-L44] static const double atanhi_atan[] = { 4.63647609000806093515e-01, 7.85398163397448278999e-01, 9.82793723247329054082e-01, 1.57079632679489655800e+00, }; [L46-L51] static const double atanlo_atan[] = { 2.26987774529616870924e-17, 3.06161699786838301793e-17, 1.39033110312309984516e-17, 6.12323399573676603587e-17, }; [L53-L60] static const double aT_atan[] = { 3.33333333333329318027e-01, -1.99999999998764832476e-01, 1.42857142725034663711e-01, -1.11111104054623557880e-01, 9.09088713343650656196e-02, -7.69187620504482999495e-02, 6.66107313738753120669e-02, -5.83357013379057348645e-02, 4.97687799461593236017e-02, -3.65315727442169155270e-02, 1.62858201153657823623e-02, }; [L62-L64] static const double one_atan = 1.0, pi_o_4 = 7.8539816339744827900E-01, pi_o_2 = 1.5707963267948965580E+00, pi = 3.1415926535897931160E+00, huge_atan = 1.0e300; [L141-L142] static const double tiny_atan2 = 1.0e-300, zero_atan2 = 0.0, pi_lo_atan2 = 1.2246467991473531772E-16; [L252] double x = 1.0 / 0.0; [L253] double y = -1.0 / 0.0; [L255] CALL, EXPR __ieee754_atan2(y, x) [L145] double z; [L146] __int32_t k, m, hx, hy, ix, iy; [L147] __uint32_t lx, ly; [L150] ieee_double_shape_type ew_u; [L151] ew_u.value = (x) [L152] EXPR ew_u.parts.msw [L152] (hx) = ew_u.parts.msw [L153] EXPR ew_u.parts.lsw [L153] (lx) = ew_u.parts.lsw [L155] ix = hx & 0x7fffffff [L157] ieee_double_shape_type ew_u; [L158] ew_u.value = (y) [L159] EXPR ew_u.parts.msw [L159] (hy) = ew_u.parts.msw [L160] EXPR ew_u.parts.lsw [L160] (ly) = ew_u.parts.lsw [L162] iy = hy & 0x7fffffff [L163-L164] COND TRUE ((ix | ((lx | -lx) >> 31)) > 0x7ff00000) || ((iy | ((ly | -ly) >> 31)) > 0x7ff00000) [L165] return x + y; [L255] RET, EXPR __ieee754_atan2(y, x) [L255] double res = __ieee754_atan2(y, x); [L257] COND TRUE res != -pi_o_4 [L258] CALL reach_error() [L3] __assert_fail("0", "double_req_bl_0686b.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 105 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 137 SDtfs, 10 SDslu, 125 SDs, 0 SdLazy, 135 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s 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=105occurred 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 1836 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, 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...