/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=NARROWEST --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_0684a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 10:18:14,114 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 10:18:14,116 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 10:18:14,140 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 10:18:14,141 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 10:18:14,142 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 10:18:14,143 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 10:18:14,145 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 10:18:14,147 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 10:18:14,148 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 10:18:14,149 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 10:18:14,150 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 10:18:14,150 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 10:18:14,151 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 10:18:14,152 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 10:18:14,154 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 10:18:14,154 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 10:18:14,155 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 10:18:14,157 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 10:18:14,160 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 10:18:14,161 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 10:18:14,163 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 10:18:14,164 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 10:18:14,167 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 10:18:14,170 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 10:18:14,171 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 10:18:14,171 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 10:18:14,172 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 10:18:14,172 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 10:18:14,175 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 10:18:14,175 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 10:18:14,176 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 10:18:14,176 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 10:18:14,178 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 10:18:14,179 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 10:18:14,180 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 10:18:14,181 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 10:18:14,181 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 10:18:14,182 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 10:18:14,182 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 10:18:14,184 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 10:18:14,184 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 [2020-10-13 10:18:14,228 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 10:18:14,229 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 10:18:14,230 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 10:18:14,231 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 10:18:14,231 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 10:18:14,231 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 10:18:14,232 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 10:18:14,232 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 10:18:14,232 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 10:18:14,232 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 10:18:14,233 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 10:18:14,233 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 10:18:14,234 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 10:18:14,234 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 10:18:14,235 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 10:18:14,235 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 10:18:14,235 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 10:18:14,235 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 10:18:14,235 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 10:18:14,236 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 10:18:14,236 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 10:18:14,236 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 10:18:14,236 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 10:18:14,237 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 10:18:14,237 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 10:18:14,237 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 10:18:14,237 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 10:18:14,237 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 10:18:14,238 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 10:18:14,238 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 10:18:14,573 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 10:18:14,586 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 10:18:14,590 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 10:18:14,592 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 10:18:14,592 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 10:18:14,593 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0684a.c [2020-10-13 10:18:14,657 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7ab9656bb/2676c1e16e3a46f28f6121e4b2587f87/FLAG7e8da047d [2020-10-13 10:18:15,084 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 10:18:15,084 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_0684a.c [2020-10-13 10:18:15,093 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7ab9656bb/2676c1e16e3a46f28f6121e4b2587f87/FLAG7e8da047d [2020-10-13 10:18:15,431 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7ab9656bb/2676c1e16e3a46f28f6121e4b2587f87 [2020-10-13 10:18:15,440 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 10:18:15,442 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 10:18:15,443 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 10:18:15,443 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 10:18:15,447 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 10:18:15,448 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:18:15" (1/1) ... [2020-10-13 10:18:15,451 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fc92056 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:15, skipping insertion in model container [2020-10-13 10:18:15,452 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:18:15" (1/1) ... [2020-10-13 10:18:15,460 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 10:18:15,490 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 10:18:15,740 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:18:15,748 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 10:18:15,936 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:18:15,962 INFO L208 MainTranslator]: Completed translation [2020-10-13 10:18:15,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:15 WrapperNode [2020-10-13 10:18:15,962 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 10:18:15,963 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 10:18:15,963 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 10:18:15,963 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 10:18:15,978 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:15" (1/1) ... [2020-10-13 10:18:15,979 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:15" (1/1) ... [2020-10-13 10:18:15,996 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:15" (1/1) ... [2020-10-13 10:18:15,997 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:15" (1/1) ... [2020-10-13 10:18:16,027 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:15" (1/1) ... [2020-10-13 10:18:16,040 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:15" (1/1) ... [2020-10-13 10:18:16,044 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:15" (1/1) ... [2020-10-13 10:18:16,054 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 10:18:16,060 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 10:18:16,060 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 10:18:16,060 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 10:18:16,062 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:15" (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 [2020-10-13 10:18:16,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 10:18:16,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 10:18:16,158 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2020-10-13 10:18:16,158 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_double [2020-10-13 10:18:16,159 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_atan2 [2020-10-13 10:18:16,159 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_double [2020-10-13 10:18:16,159 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2020-10-13 10:18:16,160 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 10:18:16,160 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 10:18:16,161 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-10-13 10:18:16,161 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2020-10-13 10:18:16,161 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 10:18:16,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-13 10:18:16,161 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 10:18:16,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 10:18:16,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 10:18:16,162 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-13 10:18:16,162 INFO L130 BoogieDeclarations]: Found specification of procedure atan_double [2020-10-13 10:18:16,163 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_atan2 [2020-10-13 10:18:16,163 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_double [2020-10-13 10:18:16,163 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2020-10-13 10:18:16,163 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 10:18:16,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 10:18:16,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-13 10:18:16,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 10:18:17,060 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 10:18:17,061 INFO L295 CfgBuilder]: Removed 20 assume(true) statements. [2020-10-13 10:18:17,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:18:17 BoogieIcfgContainer [2020-10-13 10:18:17,069 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 10:18:17,071 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 10:18:17,071 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 10:18:17,076 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 10:18:17,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:18:15" (1/3) ... [2020-10-13 10:18:17,077 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@662c4f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:18:17, skipping insertion in model container [2020-10-13 10:18:17,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:15" (2/3) ... [2020-10-13 10:18:17,078 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@662c4f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:18:17, skipping insertion in model container [2020-10-13 10:18:17,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:18:17" (3/3) ... [2020-10-13 10:18:17,081 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_0684a.c [2020-10-13 10:18:17,096 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 10:18:17,111 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 10:18:17,132 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 10:18:17,162 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 10:18:17,163 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 10:18:17,163 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 10:18:17,163 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 10:18:17,164 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 10:18:17,164 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 10:18:17,164 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 10:18:17,164 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 10:18:17,188 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states. [2020-10-13 10:18:17,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-13 10:18:17,197 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:18:17,198 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:18:17,199 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:18:17,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:18:17,206 INFO L82 PathProgramCache]: Analyzing trace with hash -1181622730, now seen corresponding path program 1 times [2020-10-13 10:18:17,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:18:17,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1552916258] [2020-10-13 10:18:17,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:18:17,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:18:17,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:18:17,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:18:17,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:18:17,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:18:18,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:18:18,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-13 10:18:18,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 10:18:18,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 630 [2020-10-13 10:18:18,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:18:18,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:18:18,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 10:18:18,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:18:18,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 10:18:18,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:18:18,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:18:18,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:18:18,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:18:18,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:18:18,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:18:18,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 10:18:18,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:18:18,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:18:18,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:18:18,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:18:18,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:18:18,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:18:18,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:18:18,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:18:18,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:18:18,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:18:18,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:18:18,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:18:18,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 10:18:18,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:18:18,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:18:18,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:18:18,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:18:18,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:18:18,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 10:18:18,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:18:18,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:18:18,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:18:18,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:18:18,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 10:18:18,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:18:18,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 10:18:18,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:18:18,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:18:18,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 10:18:18,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:18:18,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:18:18,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:18:18,235 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1552916258] [2020-10-13 10:18:18,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:18:18,240 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 10:18:18,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209379661] [2020-10-13 10:18:18,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 10:18:18,247 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:18:18,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 10:18:18,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:18:18,265 INFO L87 Difference]: Start difference. First operand 120 states. Second operand 4 states. [2020-10-13 10:18:18,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:18:18,738 INFO L93 Difference]: Finished difference Result 232 states and 362 transitions. [2020-10-13 10:18:18,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 10:18:18,740 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-10-13 10:18:18,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:18:18,752 INFO L225 Difference]: With dead ends: 232 [2020-10-13 10:18:18,753 INFO L226 Difference]: Without dead ends: 115 [2020-10-13 10:18:18,758 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 10:18:18,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-13 10:18:18,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2020-10-13 10:18:18,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-13 10:18:18,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 155 transitions. [2020-10-13 10:18:18,819 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 155 transitions. Word has length 27 [2020-10-13 10:18:18,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:18:18,820 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 155 transitions. [2020-10-13 10:18:18,820 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 10:18:18,820 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 155 transitions. [2020-10-13 10:18:18,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-13 10:18:18,822 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:18:18,822 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:18:18,823 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 10:18:18,823 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:18:18,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:18:18,823 INFO L82 PathProgramCache]: Analyzing trace with hash 258080510, now seen corresponding path program 1 times [2020-10-13 10:18:18,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:18:18,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [392115298] [2020-10-13 10:18:18,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:18:18,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:18:18,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:18:19,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:18:19,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 10:18:19,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:18:19,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 238 [2020-10-13 10:18:19,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:18:19,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:18:19,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-13 10:18:19,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 10:18:19,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:18:19,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:18:19,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:18:19,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:18:19,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:18:19,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:18:19,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:18:19,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 10:18:19,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:18:19,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:18:19,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:18:19,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:18:19,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:18:19,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:18:19,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:18:19,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:18:19,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:18:19,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 10:18:19,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:18:19,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 10:18:19,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:18:19,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:18:19,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:18:19,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:18:19,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:18:19,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-13 10:18:19,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:18:19,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:18:19,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:18:19,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 10:18:19,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:18:19,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 10:18:19,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:18:19,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:18:19,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 10:18:19,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:18:19,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:18:19,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:18:19,305 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [392115298] [2020-10-13 10:18:19,305 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:18:19,305 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 10:18:19,306 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989962257] [2020-10-13 10:18:19,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 10:18:19,312 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:18:19,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 10:18:19,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 10:18:19,313 INFO L87 Difference]: Start difference. First operand 115 states and 155 transitions. Second operand 5 states. [2020-10-13 10:18:19,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:18:19,746 INFO L93 Difference]: Finished difference Result 207 states and 286 transitions. [2020-10-13 10:18:19,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 10:18:19,747 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-10-13 10:18:19,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:18:19,749 INFO L225 Difference]: With dead ends: 207 [2020-10-13 10:18:19,750 INFO L226 Difference]: Without dead ends: 115 [2020-10-13 10:18:19,751 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 10:18:19,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-13 10:18:19,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2020-10-13 10:18:19,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-13 10:18:19,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 154 transitions. [2020-10-13 10:18:19,766 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 154 transitions. Word has length 30 [2020-10-13 10:18:19,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:18:19,767 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 154 transitions. [2020-10-13 10:18:19,767 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 10:18:19,767 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 154 transitions. [2020-10-13 10:18:19,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-13 10:18:19,768 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:18:19,769 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:18:19,769 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 10:18:19,769 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:18:19,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:18:19,770 INFO L82 PathProgramCache]: Analyzing trace with hash -5924694, now seen corresponding path program 1 times [2020-10-13 10:18:19,770 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:18:19,770 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1339975233] [2020-10-13 10:18:19,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:18:19,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-13 10:18:19,839 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-13 10:18:19,840 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-13 10:18:19,844 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 10:18:19,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 10:18:19 BoogieIcfgContainer [2020-10-13 10:18:19,866 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-13 10:18:19,869 INFO L168 Benchmark]: Toolchain (without parser) took 4426.53 ms. Allocated memory was 148.9 MB in the beginning and 243.8 MB in the end (delta: 94.9 MB). Free memory was 104.0 MB in the beginning and 159.6 MB in the end (delta: -55.6 MB). Peak memory consumption was 39.3 MB. Max. memory is 7.1 GB. [2020-10-13 10:18:19,870 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 148.9 MB. Free memory was 123.4 MB in the beginning and 123.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-13 10:18:19,871 INFO L168 Benchmark]: CACSL2BoogieTranslator took 519.62 ms. Allocated memory was 148.9 MB in the beginning and 206.0 MB in the end (delta: 57.1 MB). Free memory was 103.8 MB in the beginning and 179.9 MB in the end (delta: -76.0 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. [2020-10-13 10:18:19,872 INFO L168 Benchmark]: Boogie Preprocessor took 91.44 ms. Allocated memory is still 206.0 MB. Free memory was 179.9 MB in the beginning and 176.6 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. [2020-10-13 10:18:19,873 INFO L168 Benchmark]: RCFGBuilder took 1014.40 ms. Allocated memory is still 206.0 MB. Free memory was 176.6 MB in the beginning and 126.4 MB in the end (delta: 50.2 MB). Peak memory consumption was 50.2 MB. Max. memory is 7.1 GB. [2020-10-13 10:18:19,874 INFO L168 Benchmark]: TraceAbstraction took 2795.73 ms. Allocated memory was 206.0 MB in the beginning and 243.8 MB in the end (delta: 37.7 MB). Free memory was 125.7 MB in the beginning and 159.6 MB in the end (delta: -33.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. [2020-10-13 10:18:19,878 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 148.9 MB. Free memory was 123.4 MB in the beginning and 123.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 519.62 ms. Allocated memory was 148.9 MB in the beginning and 206.0 MB in the end (delta: 57.1 MB). Free memory was 103.8 MB in the beginning and 179.9 MB in the end (delta: -76.0 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 91.44 ms. Allocated memory is still 206.0 MB. Free memory was 179.9 MB in the beginning and 176.6 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1014.40 ms. Allocated memory is still 206.0 MB. Free memory was 176.6 MB in the beginning and 126.4 MB in the end (delta: 50.2 MB). Peak memory consumption was 50.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2795.73 ms. Allocated memory was 206.0 MB in the beginning and 243.8 MB in the end (delta: 37.7 MB). Free memory was 125.7 MB in the beginning and 159.6 MB in the end (delta: -33.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 286]: 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 285. 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; [L276] double x = __VERIFIER_nondet_double(); [L277] double y = 1.0 / 0.0; [L280] CALL, EXPR isfinite_double(x) [L260] __int32_t hx; [L262] ieee_double_shape_type gh_u; [L263] gh_u.value = (x) [L264] EXPR gh_u.parts.msw [L264] (hx) = gh_u.parts.msw [L266] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); [L280] RET, EXPR isfinite_double(x) [L280] isfinite_double(x) && isinf_double(y) [L280] CALL, EXPR isinf_double(y) [L246] __int32_t hx, lx; [L248] ieee_double_shape_type ew_u; [L249] ew_u.value = (x) [L250] EXPR ew_u.parts.msw [L250] (hx) = ew_u.parts.msw [L251] EXPR ew_u.parts.lsw [L251] (lx) = ew_u.parts.lsw [L253] hx &= 0x7fffffff [L254] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L255] hx = 0x7ff00000 - hx [L256] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L280] RET, EXPR isinf_double(y) [L280] isfinite_double(x) && isinf_double(y) [L280] COND TRUE isfinite_double(x) && isinf_double(y) [L282] 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; [L282] RET, EXPR __ieee754_atan2(y, x) [L282] double res = __ieee754_atan2(y, x); [L285] COND TRUE res != pi_o_2 [L286] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 120 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.6s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 304 SDtfs, 24 SDslu, 416 SDs, 0 SdLazy, 322 SolverSat, 31 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=120occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 95 NumberOfCodeBlocks, 95 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 55 ConstructedInterpolants, 0 QuantifiedInterpolants, 5836 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...