/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_0480.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 23:16:33,070 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 23:16:33,073 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 23:16:33,116 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 23:16:33,117 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 23:16:33,126 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 23:16:33,127 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 23:16:33,131 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 23:16:33,134 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 23:16:33,138 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 23:16:33,138 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 23:16:33,139 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 23:16:33,140 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 23:16:33,142 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 23:16:33,145 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 23:16:33,147 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 23:16:33,148 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 23:16:33,149 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 23:16:33,151 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 23:16:33,159 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 23:16:33,162 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 23:16:33,163 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 23:16:33,164 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 23:16:33,165 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 23:16:33,181 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 23:16:33,181 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 23:16:33,181 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 23:16:33,185 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 23:16:33,186 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 23:16:33,187 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 23:16:33,190 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 23:16:33,191 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 23:16:33,192 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 23:16:33,192 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 23:16:33,193 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 23:16:33,193 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 23:16:33,194 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 23:16:33,194 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 23:16:33,194 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 23:16:33,199 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 23:16:33,199 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 23:16:33,201 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 23:16:33,237 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 23:16:33,237 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 23:16:33,239 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 23:16:33,239 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 23:16:33,239 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 23:16:33,240 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 23:16:33,240 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 23:16:33,240 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 23:16:33,240 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 23:16:33,241 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 23:16:33,241 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 23:16:33,242 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 23:16:33,242 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 23:16:33,242 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 23:16:33,242 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 23:16:33,243 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 23:16:33,243 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 23:16:33,243 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 23:16:33,243 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 23:16:33,243 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 23:16:33,244 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 23:16:33,244 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:16:33,244 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 23:16:33,244 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 23:16:33,245 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 23:16:33,245 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 23:16:33,245 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 23:16:33,245 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 23:16:33,245 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 23:16:33,246 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 23:16:33,581 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 23:16:33,594 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 23:16:33,598 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 23:16:33,600 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 23:16:33,600 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 23:16:33,601 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0480.c [2020-10-14 23:16:33,667 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/54e1e51c4/e96968b3b61d4da098f191edde4624a3/FLAG56ecc597b [2020-10-14 23:16:34,133 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 23:16:34,134 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_0480.c [2020-10-14 23:16:34,143 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/54e1e51c4/e96968b3b61d4da098f191edde4624a3/FLAG56ecc597b [2020-10-14 23:16:34,540 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/54e1e51c4/e96968b3b61d4da098f191edde4624a3 [2020-10-14 23:16:34,548 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 23:16:34,550 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 23:16:34,551 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 23:16:34,551 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 23:16:34,555 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 23:16:34,556 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:16:34" (1/1) ... [2020-10-14 23:16:34,559 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fe964b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:16:34, skipping insertion in model container [2020-10-14 23:16:34,559 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:16:34" (1/1) ... [2020-10-14 23:16:34,567 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 23:16:34,609 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 23:16:34,859 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:16:34,864 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 23:16:35,021 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:16:35,046 INFO L208 MainTranslator]: Completed translation [2020-10-14 23:16:35,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:16:35 WrapperNode [2020-10-14 23:16:35,046 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 23:16:35,047 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 23:16:35,047 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 23:16:35,047 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 23:16:35,061 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:16:35" (1/1) ... [2020-10-14 23:16:35,061 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:16:35" (1/1) ... [2020-10-14 23:16:35,075 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:16:35" (1/1) ... [2020-10-14 23:16:35,075 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:16:35" (1/1) ... [2020-10-14 23:16:35,096 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:16:35" (1/1) ... [2020-10-14 23:16:35,107 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:16:35" (1/1) ... [2020-10-14 23:16:35,110 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:16:35" (1/1) ... [2020-10-14 23:16:35,115 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 23:16:35,116 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 23:16:35,116 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 23:16:35,116 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 23:16:35,117 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:16:35" (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 23:16:35,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 23:16:35,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 23:16:35,174 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-10-14 23:16:35,174 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrt [2020-10-14 23:16:35,174 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_acos [2020-10-14 23:16:35,174 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 23:16:35,174 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 23:16:35,174 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-10-14 23:16:35,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 23:16:35,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-14 23:16:35,175 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 23:16:35,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 23:16:35,175 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrt [2020-10-14 23:16:35,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 23:16:35,176 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-14 23:16:35,176 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_acos [2020-10-14 23:16:35,176 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 23:16:35,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 23:16:35,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 23:16:35,824 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 23:16:35,824 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-14 23:16:35,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:16:35 BoogieIcfgContainer [2020-10-14 23:16:35,832 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 23:16:35,834 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 23:16:35,834 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 23:16:35,841 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 23:16:35,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:16:34" (1/3) ... [2020-10-14 23:16:35,842 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f58ac5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:16:35, skipping insertion in model container [2020-10-14 23:16:35,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:16:35" (2/3) ... [2020-10-14 23:16:35,845 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f58ac5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:16:35, skipping insertion in model container [2020-10-14 23:16:35,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:16:35" (3/3) ... [2020-10-14 23:16:35,847 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_0480.c [2020-10-14 23:16:35,859 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 23:16:35,868 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 23:16:35,880 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 23:16:35,904 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 23:16:35,904 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 23:16:35,904 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 23:16:35,904 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 23:16:35,905 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 23:16:35,905 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 23:16:35,905 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 23:16:35,905 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 23:16:35,925 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states. [2020-10-14 23:16:35,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-14 23:16:35,932 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:16:35,933 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:16:35,933 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:16:35,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:16:35,938 INFO L82 PathProgramCache]: Analyzing trace with hash -665129297, now seen corresponding path program 1 times [2020-10-14 23:16:35,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:16:35,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1400273972] [2020-10-14 23:16:35,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:16:36,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:16:36,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:36,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:36,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:16:36,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 23:16:36,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:16:36,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 260 [2020-10-14 23:16:36,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:16:36,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:16:36,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:16:36,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 23:16:36,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:16:36,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 23:16:36,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:16:36,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:16:36,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:36,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:16:36,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:16:36,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:16:36,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 23:16:36,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:16:36,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:16:36,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:16:36,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:16:36,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:16:36,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:16:36,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:16:36,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:16:36,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:36,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:36,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:16:36,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 23:16:36,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:16:36,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 23:16:36,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:16:36,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:16:36,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:16:36,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-14 23:16:36,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:16:36,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:16:36,580 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 23:16:36,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1400273972] [2020-10-14 23:16:36,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:16:36,583 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 23:16:36,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953685149] [2020-10-14 23:16:36,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 23:16:36,590 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:16:36,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 23:16:36,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 23:16:36,609 INFO L87 Difference]: Start difference. First operand 87 states. Second operand 4 states. [2020-10-14 23:16:37,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:16:37,086 INFO L93 Difference]: Finished difference Result 166 states and 257 transitions. [2020-10-14 23:16:37,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 23:16:37,089 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-10-14 23:16:37,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:16:37,101 INFO L225 Difference]: With dead ends: 166 [2020-10-14 23:16:37,101 INFO L226 Difference]: Without dead ends: 83 [2020-10-14 23:16:37,106 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 23:16:37,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-14 23:16:37,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-10-14 23:16:37,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-14 23:16:37,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 110 transitions. [2020-10-14 23:16:37,162 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 110 transitions. Word has length 19 [2020-10-14 23:16:37,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:16:37,163 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 110 transitions. [2020-10-14 23:16:37,163 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 23:16:37,163 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 110 transitions. [2020-10-14 23:16:37,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-14 23:16:37,166 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:16:37,166 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 23:16:37,166 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 23:16:37,166 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:16:37,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:16:37,167 INFO L82 PathProgramCache]: Analyzing trace with hash 1020440435, now seen corresponding path program 1 times [2020-10-14 23:16:37,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:16:37,168 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [493612110] [2020-10-14 23:16:37,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:16:37,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-14 23:16:37,201 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-14 23:16:37,202 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-14 23:16:37,207 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 23:16:37,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 11:16:37 BoogieIcfgContainer [2020-10-14 23:16:37,224 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 23:16:37,227 INFO L168 Benchmark]: Toolchain (without parser) took 2676.18 ms. Allocated memory was 146.8 MB in the beginning and 235.4 MB in the end (delta: 88.6 MB). Free memory was 102.6 MB in the beginning and 133.0 MB in the end (delta: -30.4 MB). Peak memory consumption was 58.2 MB. Max. memory is 7.1 GB. [2020-10-14 23:16:37,228 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 146.8 MB. Free memory was 121.4 MB in the beginning and 120.9 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-10-14 23:16:37,229 INFO L168 Benchmark]: CACSL2BoogieTranslator took 495.78 ms. Allocated memory was 146.8 MB in the beginning and 203.4 MB in the end (delta: 56.6 MB). Free memory was 102.2 MB in the beginning and 177.4 MB in the end (delta: -75.2 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. [2020-10-14 23:16:37,230 INFO L168 Benchmark]: Boogie Preprocessor took 68.04 ms. Allocated memory is still 203.4 MB. Free memory was 177.4 MB in the beginning and 174.5 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2020-10-14 23:16:37,231 INFO L168 Benchmark]: RCFGBuilder took 716.79 ms. Allocated memory is still 203.4 MB. Free memory was 174.5 MB in the beginning and 135.8 MB in the end (delta: 38.7 MB). Peak memory consumption was 38.7 MB. Max. memory is 7.1 GB. [2020-10-14 23:16:37,232 INFO L168 Benchmark]: TraceAbstraction took 1390.74 ms. Allocated memory was 203.4 MB in the beginning and 235.4 MB in the end (delta: 32.0 MB). Free memory was 135.8 MB in the beginning and 133.0 MB in the end (delta: 2.8 MB). Peak memory consumption was 34.7 MB. Max. memory is 7.1 GB. [2020-10-14 23:16:37,236 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 146.8 MB. Free memory was 121.4 MB in the beginning and 120.9 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 495.78 ms. Allocated memory was 146.8 MB in the beginning and 203.4 MB in the end (delta: 56.6 MB). Free memory was 102.2 MB in the beginning and 177.4 MB in the end (delta: -75.2 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 68.04 ms. Allocated memory is still 203.4 MB. Free memory was 177.4 MB in the beginning and 174.5 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 716.79 ms. Allocated memory is still 203.4 MB. Free memory was 174.5 MB in the beginning and 135.8 MB in the end (delta: 38.7 MB). Peak memory consumption was 38.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1390.74 ms. Allocated memory was 203.4 MB in the beginning and 235.4 MB in the end (delta: 32.0 MB). Free memory was 135.8 MB in the beginning and 133.0 MB in the end (delta: 2.8 MB). Peak memory consumption was 34.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 237]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someUnaryDOUBLEoperation at line 145, overapproximation of bitwiseAnd at line 163, overapproximation of someBinaryArithmeticDOUBLEoperation at line 181, overapproximation of someBinaryDOUBLEComparisonOperation at line 236. Possible FailurePath: [L28] static const double one_sqrt = 1.0, tiny_sqrt = 1.0e-300; [L140-L153] static const double one_acos = 1.00000000000000000000e+00, pi = 3.14159265358979311600e+00, pio2_hi_acos = 1.57079632679489655800e+00, pio2_lo_acos = 6.12323399573676603587e-17, pS0_acos = 1.66666666666666657415e-01, pS1_acos = -3.25565818622400915405e-01, pS2_acos = 2.01212532134862925881e-01, pS3_acos = -4.00555345006794114027e-02, pS4_acos = 7.91534994289814532176e-04, pS5_acos = 3.47933107596021167570e-05, qS1_acos = -2.40339491173441421878e+00, qS2_acos = 2.02094576023350569471e+00, qS3_acos = -6.88283971605453293030e-01, qS4_acos = 7.70381505559019352791e-02; [L232] double x = 1.0; [L233] CALL, EXPR __ieee754_acos(x) [L156] double z, p, q, r, w, s, c, df; [L157] __int32_t hx, ix; [L159] ieee_double_shape_type gh_u; [L160] gh_u.value = (x) [L161] EXPR gh_u.parts.msw [L161] (hx) = gh_u.parts.msw [L163] ix = hx & 0x7fffffff [L164] COND FALSE !(ix >= 0x3ff00000) [L179] COND TRUE ix < 0x3fe00000 [L180] COND TRUE ix <= 0x3c600000 [L181] return pio2_hi_acos + pio2_lo_acos; [L233] RET, EXPR __ieee754_acos(x) [L233] double res = __ieee754_acos(x); [L236] EXPR res == 0.0 && __signbit_double(res) == 0 [L236] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L237] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 87 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 103 SDtfs, 97 SDslu, 5 SDs, 0 SdLazy, 115 SolverSat, 20 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=87occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 1566 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...