/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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=0.2 --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 -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_0685a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 23:17:16,177 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 23:17:16,180 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 23:17:16,221 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 23:17:16,222 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 23:17:16,230 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 23:17:16,232 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 23:17:16,235 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 23:17:16,238 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 23:17:16,241 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 23:17:16,242 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 23:17:16,242 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 23:17:16,243 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 23:17:16,245 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 23:17:16,247 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 23:17:16,249 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 23:17:16,250 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 23:17:16,252 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 23:17:16,253 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 23:17:16,261 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 23:17:16,263 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 23:17:16,264 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 23:17:16,265 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 23:17:16,266 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 23:17:16,278 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 23:17:16,278 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 23:17:16,285 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 23:17:16,286 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 23:17:16,287 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 23:17:16,288 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 23:17:16,288 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 23:17:16,291 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 23:17:16,292 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 23:17:16,292 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 23:17:16,294 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 23:17:16,294 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 23:17:16,294 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 23:17:16,295 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 23:17:16,295 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 23:17:16,296 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 23:17:16,297 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 23:17:16,298 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 [2020-10-14 23:17:16,335 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 23:17:16,336 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 23:17:16,338 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 23:17:16,338 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 23:17:16,338 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 23:17:16,338 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 23:17:16,339 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 23:17:16,339 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 23:17:16,339 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 23:17:16,339 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 23:17:16,340 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 23:17:16,341 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 23:17:16,341 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 23:17:16,341 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 23:17:16,341 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 23:17:16,341 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 23:17:16,342 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 23:17:16,342 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 23:17:16,342 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 23:17:16,342 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 23:17:16,342 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 23:17:16,343 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:17:16,343 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 23:17:16,343 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 23:17:16,343 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 23:17:16,343 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 23:17:16,344 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 23:17:16,344 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 23:17:16,344 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 23:17:16,344 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 23:17:16,676 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 23:17:16,689 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 23:17:16,692 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 23:17:16,694 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 23:17:16,694 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 23:17:16,695 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0685a.c [2020-10-14 23:17:16,759 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d0a7d2563/12cb62d538b04ccc9a60dffe2dfeee38/FLAGda893cbbe [2020-10-14 23:17:17,176 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 23:17:17,176 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_0685a.c [2020-10-14 23:17:17,185 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d0a7d2563/12cb62d538b04ccc9a60dffe2dfeee38/FLAGda893cbbe [2020-10-14 23:17:17,583 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d0a7d2563/12cb62d538b04ccc9a60dffe2dfeee38 [2020-10-14 23:17:17,591 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 23:17:17,593 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 23:17:17,594 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 23:17:17,594 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 23:17:17,598 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 23:17:17,599 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:17:17" (1/1) ... [2020-10-14 23:17:17,602 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17fd04c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:17, skipping insertion in model container [2020-10-14 23:17:17,602 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:17:17" (1/1) ... [2020-10-14 23:17:17,610 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 23:17:17,637 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 23:17:17,886 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:17:18,024 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 23:17:18,125 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:17:18,149 INFO L208 MainTranslator]: Completed translation [2020-10-14 23:17:18,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:18 WrapperNode [2020-10-14 23:17:18,150 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 23:17:18,150 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 23:17:18,151 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 23:17:18,151 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 23:17:18,162 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:18" (1/1) ... [2020-10-14 23:17:18,162 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:18" (1/1) ... [2020-10-14 23:17:18,177 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:18" (1/1) ... [2020-10-14 23:17:18,177 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:18" (1/1) ... [2020-10-14 23:17:18,204 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:18" (1/1) ... [2020-10-14 23:17:18,214 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:18" (1/1) ... [2020-10-14 23:17:18,218 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:18" (1/1) ... [2020-10-14 23:17:18,222 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 23:17:18,223 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 23:17:18,223 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 23:17:18,223 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 23:17:18,224 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:18" (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 [2020-10-14 23:17:18,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 23:17:18,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 23:17:18,292 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2020-10-14 23:17:18,292 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_double [2020-10-14 23:17:18,293 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_atan2 [2020-10-14 23:17:18,293 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 23:17:18,293 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 23:17:18,293 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-10-14 23:17:18,293 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2020-10-14 23:17:18,293 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 23:17:18,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-14 23:17:18,294 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 23:17:18,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 23:17:18,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 23:17:18,294 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-14 23:17:18,294 INFO L130 BoogieDeclarations]: Found specification of procedure atan_double [2020-10-14 23:17:18,294 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_atan2 [2020-10-14 23:17:18,295 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 23:17:18,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 23:17:18,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-14 23:17:18,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 23:17:18,954 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 23:17:18,954 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-14 23:17:18,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:17:18 BoogieIcfgContainer [2020-10-14 23:17:18,959 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 23:17:18,961 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 23:17:18,961 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 23:17:18,964 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 23:17:18,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:17:17" (1/3) ... [2020-10-14 23:17:18,966 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1220e6c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:17:18, skipping insertion in model container [2020-10-14 23:17:18,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:18" (2/3) ... [2020-10-14 23:17:18,966 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1220e6c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:17:18, skipping insertion in model container [2020-10-14 23:17:18,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:17:18" (3/3) ... [2020-10-14 23:17:18,968 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_0685a.c [2020-10-14 23:17:18,980 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 23:17:18,988 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 23:17:19,003 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 23:17:19,029 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 23:17:19,030 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 23:17:19,030 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 23:17:19,030 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 23:17:19,030 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 23:17:19,031 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 23:17:19,031 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 23:17:19,031 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 23:17:19,053 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states. [2020-10-14 23:17:19,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-14 23:17:19,060 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:17:19,061 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:17:19,061 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:17:19,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:17:19,067 INFO L82 PathProgramCache]: Analyzing trace with hash 947216650, now seen corresponding path program 1 times [2020-10-14 23:17:19,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:17:19,074 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1321591865] [2020-10-14 23:17:19,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:17:19,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:17:19,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:17:19,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:17:19,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:17:19,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 23:17:19,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:17:19,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 261 [2020-10-14 23:17:19,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:17:19,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:17:19,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:17:19,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 23:17:19,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:17:19,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 23:17:19,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:17:19,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:17:19,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:17:19,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:17:19,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:17:19,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:17:19,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 23:17:19,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:17:19,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:17:19,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:17:19,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:17:19,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:17:19,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:17:19,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:17:19,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:17:19,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:17:19,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:17:19,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:17:19,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 23:17:19,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:17:19,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 23:17:19,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:17:19,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:17:19,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:17:19,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:17:19,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:17:19,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:17:19,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:17:19,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1321591865] [2020-10-14 23:17:19,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:17:19,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 23:17:19,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052958161] [2020-10-14 23:17:19,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 23:17:19,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:17:19,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 23:17:19,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 23:17:19,743 INFO L87 Difference]: Start difference. First operand 101 states. Second operand 4 states. [2020-10-14 23:17:20,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:17:20,145 INFO L93 Difference]: Finished difference Result 194 states and 310 transitions. [2020-10-14 23:17:20,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:17:20,147 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-10-14 23:17:20,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:17:20,158 INFO L225 Difference]: With dead ends: 194 [2020-10-14 23:17:20,158 INFO L226 Difference]: Without dead ends: 97 [2020-10-14 23:17:20,163 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 23:17:20,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-14 23:17:20,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-10-14 23:17:20,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-14 23:17:20,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 136 transitions. [2020-10-14 23:17:20,214 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 136 transitions. Word has length 18 [2020-10-14 23:17:20,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:17:20,215 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 136 transitions. [2020-10-14 23:17:20,215 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 23:17:20,215 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 136 transitions. [2020-10-14 23:17:20,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-14 23:17:20,216 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:17:20,216 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] [2020-10-14 23:17:20,217 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 23:17:20,217 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:17:20,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:17:20,217 INFO L82 PathProgramCache]: Analyzing trace with hash -246249165, now seen corresponding path program 1 times [2020-10-14 23:17:20,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:17:20,218 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [313620024] [2020-10-14 23:17:20,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:17:20,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-14 23:17:20,275 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-14 23:17:20,275 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-14 23:17:20,280 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 23:17:20,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 11:17:20 BoogieIcfgContainer [2020-10-14 23:17:20,299 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 23:17:20,302 INFO L168 Benchmark]: Toolchain (without parser) took 2708.35 ms. Allocated memory was 147.8 MB in the beginning and 231.7 MB in the end (delta: 83.9 MB). Free memory was 103.4 MB in the beginning and 123.8 MB in the end (delta: -20.3 MB). Peak memory consumption was 63.6 MB. Max. memory is 7.1 GB. [2020-10-14 23:17:20,303 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 147.8 MB. Free memory was 122.5 MB in the beginning and 122.0 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. [2020-10-14 23:17:20,304 INFO L168 Benchmark]: CACSL2BoogieTranslator took 556.01 ms. Allocated memory was 147.8 MB in the beginning and 207.1 MB in the end (delta: 59.2 MB). Free memory was 103.0 MB in the beginning and 180.6 MB in the end (delta: -77.6 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. [2020-10-14 23:17:20,305 INFO L168 Benchmark]: Boogie Preprocessor took 72.26 ms. Allocated memory is still 207.1 MB. Free memory was 180.6 MB in the beginning and 177.8 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-10-14 23:17:20,306 INFO L168 Benchmark]: RCFGBuilder took 736.67 ms. Allocated memory is still 207.1 MB. Free memory was 177.8 MB in the beginning and 134.5 MB in the end (delta: 43.4 MB). Peak memory consumption was 43.4 MB. Max. memory is 7.1 GB. [2020-10-14 23:17:20,307 INFO L168 Benchmark]: TraceAbstraction took 1338.29 ms. Allocated memory was 207.1 MB in the beginning and 231.7 MB in the end (delta: 24.6 MB). Free memory was 134.5 MB in the beginning and 123.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 35.3 MB. Max. memory is 7.1 GB. [2020-10-14 23:17:20,311 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 147.8 MB. Free memory was 122.5 MB in the beginning and 122.0 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 556.01 ms. Allocated memory was 147.8 MB in the beginning and 207.1 MB in the end (delta: 59.2 MB). Free memory was 103.0 MB in the beginning and 180.6 MB in the end (delta: -77.6 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 72.26 ms. Allocated memory is still 207.1 MB. Free memory was 180.6 MB in the beginning and 177.8 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 736.67 ms. Allocated memory is still 207.1 MB. Free memory was 177.8 MB in the beginning and 134.5 MB in the end (delta: 43.4 MB). Peak memory consumption was 43.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1338.29 ms. Allocated memory was 207.1 MB in the beginning and 231.7 MB in the end (delta: 24.6 MB). Free memory was 134.5 MB in the beginning and 123.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 35.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 258]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 162, overapproximation of someUnaryDOUBLEoperation at line 52, overapproximation of someBinaryArithmeticDOUBLEoperation at line 163, overapproximation of bitwiseAnd at line 160, overapproximation of someBinaryDOUBLEComparisonOperation at line 257. Possible FailurePath: [L37-L42] static const double atanhi_atan[] = { 4.63647609000806093515e-01, 7.85398163397448278999e-01, 9.82793723247329054082e-01, 1.57079632679489655800e+00, }; [L44-L49] static const double atanlo_atan[] = { 2.26987774529616870924e-17, 3.06161699786838301793e-17, 1.39033110312309984516e-17, 6.12323399573676603587e-17, }; [L51-L58] 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, }; [L60-L62] 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; [L139-L140] static const double tiny_atan2 = 1.0e-300, zero_atan2 = 0.0, pi_lo_atan2 = 1.2246467991473531772E-16; [L251] double x = -1.0 / 0.0; [L252] double y = 1.0 / 0.0; [L254] CALL, EXPR __ieee754_atan2(y, x) [L143] double z; [L144] __int32_t k, m, hx, hy, ix, iy; [L145] __uint32_t lx, ly; [L148] ieee_double_shape_type ew_u; [L149] ew_u.value = (x) [L150] EXPR ew_u.parts.msw [L150] (hx) = ew_u.parts.msw [L151] EXPR ew_u.parts.lsw [L151] (lx) = ew_u.parts.lsw [L153] ix = hx & 0x7fffffff [L155] ieee_double_shape_type ew_u; [L156] ew_u.value = (y) [L157] EXPR ew_u.parts.msw [L157] (hy) = ew_u.parts.msw [L158] EXPR ew_u.parts.lsw [L158] (ly) = ew_u.parts.lsw [L160] iy = hy & 0x7fffffff [L161-L162] COND TRUE ((ix | ((lx | -lx) >> 31)) > 0x7ff00000) || ((iy | ((ly | -ly) >> 31)) > 0x7ff00000) [L163] return x + y; [L254] RET, EXPR __ieee754_atan2(y, x) [L254] double res = __ieee754_atan2(y, x); [L257] COND TRUE res != 3 * pi_o_4 [L258] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 101 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 136 SDtfs, 8 SDslu, 126 SDs, 0 SdLazy, 136 SolverSat, 12 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, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=101occurred 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, 0.4s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 1411 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...