/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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/float_req_bl_0680a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:47:56,260 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:47:56,263 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:47:56,302 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:47:56,302 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:47:56,303 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:47:56,305 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:47:56,306 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:47:56,308 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:47:56,309 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:47:56,310 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:47:56,311 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:47:56,311 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:47:56,312 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:47:56,313 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:47:56,314 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:47:56,315 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:47:56,316 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:47:56,318 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:47:56,320 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:47:56,321 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:47:56,322 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:47:56,323 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:47:56,324 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:47:56,327 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:47:56,327 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:47:56,328 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:47:56,328 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:47:56,329 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:47:56,330 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:47:56,330 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:47:56,331 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:47:56,332 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:47:56,332 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:47:56,333 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:47:56,334 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:47:56,334 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:47:56,335 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:47:56,335 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:47:56,336 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:47:56,336 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:47:56,337 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 04:47:56,359 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:47:56,359 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:47:56,360 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:47:56,360 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:47:56,361 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:47:56,361 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:47:56,361 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:47:56,361 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:47:56,362 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:47:56,362 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:47:56,362 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:47:56,362 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:47:56,362 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:47:56,362 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:47:56,363 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:47:56,363 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:47:56,363 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:47:56,363 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:47:56,363 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:47:56,364 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:47:56,364 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:47:56,364 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:47:56,364 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:47:56,365 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:47:56,365 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:47:56,365 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:47:56,365 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:47:56,365 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:47:56,366 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:47:56,366 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 04:47:56,708 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:47:56,722 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:47:56,725 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:47:56,727 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:47:56,728 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:47:56,729 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0680a.c [2020-10-14 04:47:56,794 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ef40ddbc3/9f1d595e00ab4c58ba86d6c658e2def0/FLAG9bbc1265e [2020-10-14 04:47:57,289 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:47:57,289 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_0680a.c [2020-10-14 04:47:57,298 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ef40ddbc3/9f1d595e00ab4c58ba86d6c658e2def0/FLAG9bbc1265e [2020-10-14 04:47:57,600 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ef40ddbc3/9f1d595e00ab4c58ba86d6c658e2def0 [2020-10-14 04:47:57,610 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:47:57,612 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:47:57,613 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:47:57,613 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:47:57,617 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:47:57,619 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:47:57" (1/1) ... [2020-10-14 04:47:57,621 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b337bef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:57, skipping insertion in model container [2020-10-14 04:47:57,622 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:47:57" (1/1) ... [2020-10-14 04:47:57,630 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:47:57,656 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:47:57,907 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:47:57,915 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:47:58,123 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:47:58,155 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:47:58,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:58 WrapperNode [2020-10-14 04:47:58,156 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:47:58,157 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:47:58,157 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:47:58,157 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:47:58,168 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:58" (1/1) ... [2020-10-14 04:47:58,168 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:58" (1/1) ... [2020-10-14 04:47:58,184 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:58" (1/1) ... [2020-10-14 04:47:58,184 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:58" (1/1) ... [2020-10-14 04:47:58,208 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:58" (1/1) ... [2020-10-14 04:47:58,219 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:58" (1/1) ... [2020-10-14 04:47:58,222 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:58" (1/1) ... [2020-10-14 04:47:58,227 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:47:58,228 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:47:58,228 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:47:58,228 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:47:58,229 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:58" (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 04:47:58,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:47:58,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:47:58,300 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2020-10-14 04:47:58,300 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_float [2020-10-14 04:47:58,300 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_atan2f [2020-10-14 04:47:58,301 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:47:58,301 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:47:58,301 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-14 04:47:58,301 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2020-10-14 04:47:58,301 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 04:47:58,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-14 04:47:58,302 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 04:47:58,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 04:47:58,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 04:47:58,302 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-14 04:47:58,302 INFO L130 BoogieDeclarations]: Found specification of procedure atan_float [2020-10-14 04:47:58,303 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_atan2f [2020-10-14 04:47:58,303 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:47:58,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:47:58,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-14 04:47:58,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:47:58,881 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:47:58,882 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-10-14 04:47:58,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:47:58 BoogieIcfgContainer [2020-10-14 04:47:58,888 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:47:58,892 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:47:58,894 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:47:58,898 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:47:58,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:47:57" (1/3) ... [2020-10-14 04:47:58,900 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27d476d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:47:58, skipping insertion in model container [2020-10-14 04:47:58,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:58" (2/3) ... [2020-10-14 04:47:58,901 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27d476d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:47:58, skipping insertion in model container [2020-10-14 04:47:58,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:47:58" (3/3) ... [2020-10-14 04:47:58,903 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_0680a.c [2020-10-14 04:47:58,914 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:47:58,923 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 04:47:58,936 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 04:47:58,958 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:47:58,958 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:47:58,958 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:47:58,959 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:47:58,959 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:47:58,959 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:47:58,959 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:47:58,959 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:47:58,985 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states. [2020-10-14 04:47:58,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-14 04:47:58,991 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:47:58,992 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 04:47:58,992 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:47:58,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:47:58,997 INFO L82 PathProgramCache]: Analyzing trace with hash 1988302874, now seen corresponding path program 1 times [2020-10-14 04:47:59,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:47:59,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [133743917] [2020-10-14 04:47:59,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:47:59,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:47:59,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:47:59,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:47:59,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:47:59,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 04:47:59,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:47:59,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 276 [2020-10-14 04:47:59,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:47:59,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:47:59,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:47:59,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 04:47:59,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:47:59,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 04:47:59,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:47:59,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:47:59,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:47:59,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:47:59,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:47:59,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:47:59,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 04:47:59,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:47:59,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:47:59,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:47:59,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:47:59,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:47:59,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:47:59,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 04:47:59,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:47:59,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:47:59,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:47:59,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:47:59,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 04:47:59,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:47:59,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 04:47:59,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:47:59,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:47:59,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:47:59,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:47:59,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:47:59,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:47:59,666 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 04:47:59,667 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [133743917] [2020-10-14 04:47:59,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:47:59,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 04:47:59,670 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716829468] [2020-10-14 04:47:59,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:47:59,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:47:59,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:47:59,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:47:59,694 INFO L87 Difference]: Start difference. First operand 99 states. Second operand 4 states. [2020-10-14 04:48:00,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:48:00,105 INFO L93 Difference]: Finished difference Result 190 states and 302 transitions. [2020-10-14 04:48:00,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 04:48:00,107 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-10-14 04:48:00,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:48:00,119 INFO L225 Difference]: With dead ends: 190 [2020-10-14 04:48:00,120 INFO L226 Difference]: Without dead ends: 95 [2020-10-14 04:48:00,125 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 04:48:00,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-14 04:48:00,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2020-10-14 04:48:00,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-14 04:48:00,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 134 transitions. [2020-10-14 04:48:00,184 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 134 transitions. Word has length 18 [2020-10-14 04:48:00,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:48:00,184 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 134 transitions. [2020-10-14 04:48:00,184 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:48:00,184 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 134 transitions. [2020-10-14 04:48:00,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-14 04:48:00,186 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:48:00,186 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 04:48:00,186 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:48:00,187 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:48:00,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:48:00,190 INFO L82 PathProgramCache]: Analyzing trace with hash -796728189, now seen corresponding path program 1 times [2020-10-14 04:48:00,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:48:00,191 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [51168265] [2020-10-14 04:48:00,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:48:00,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-14 04:48:00,285 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-14 04:48:00,285 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-14 04:48:00,291 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:48:00,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 04:48:00 BoogieIcfgContainer [2020-10-14 04:48:00,314 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 04:48:00,318 INFO L168 Benchmark]: Toolchain (without parser) took 2704.63 ms. Allocated memory was 147.3 MB in the beginning and 234.4 MB in the end (delta: 87.0 MB). Free memory was 103.5 MB in the beginning and 134.6 MB in the end (delta: -31.1 MB). Peak memory consumption was 55.9 MB. Max. memory is 7.1 GB. [2020-10-14 04:48:00,320 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 147.3 MB. Free memory was 121.9 MB in the beginning and 121.5 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-10-14 04:48:00,322 INFO L168 Benchmark]: CACSL2BoogieTranslator took 543.11 ms. Allocated memory was 147.3 MB in the beginning and 204.5 MB in the end (delta: 57.1 MB). Free memory was 103.1 MB in the beginning and 178.8 MB in the end (delta: -75.8 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. [2020-10-14 04:48:00,323 INFO L168 Benchmark]: Boogie Preprocessor took 70.86 ms. Allocated memory is still 204.5 MB. Free memory was 178.8 MB in the beginning and 175.6 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. [2020-10-14 04:48:00,324 INFO L168 Benchmark]: RCFGBuilder took 661.22 ms. Allocated memory is still 204.5 MB. Free memory was 175.6 MB in the beginning and 136.5 MB in the end (delta: 39.1 MB). Peak memory consumption was 39.1 MB. Max. memory is 7.1 GB. [2020-10-14 04:48:00,334 INFO L168 Benchmark]: TraceAbstraction took 1422.49 ms. Allocated memory was 204.5 MB in the beginning and 234.4 MB in the end (delta: 29.9 MB). Free memory was 135.5 MB in the beginning and 134.6 MB in the end (delta: 934.1 kB). Peak memory consumption was 30.8 MB. Max. memory is 7.1 GB. [2020-10-14 04:48:00,341 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 147.3 MB. Free memory was 121.9 MB in the beginning and 121.5 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 543.11 ms. Allocated memory was 147.3 MB in the beginning and 204.5 MB in the end (delta: 57.1 MB). Free memory was 103.1 MB in the beginning and 178.8 MB in the end (delta: -75.8 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 70.86 ms. Allocated memory is still 204.5 MB. Free memory was 178.8 MB in the beginning and 175.6 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 661.22 ms. Allocated memory is still 204.5 MB. Free memory was 175.6 MB in the beginning and 136.5 MB in the end (delta: 39.1 MB). Peak memory consumption was 39.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1422.49 ms. Allocated memory was 204.5 MB in the beginning and 234.4 MB in the end (delta: 29.9 MB). Free memory was 135.5 MB in the beginning and 134.6 MB in the end (delta: 934.1 kB). Peak memory consumption was 30.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 226]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 225, overapproximation of someUnaryDOUBLEoperation at line 42, overapproximation of bitwiseAnd at line 133, overapproximation of someUnaryFLOAToperation at line 220, overapproximation of someBinaryArithmeticFLOAToperation at line 135. Possible FailurePath: [L27-L32] static const float atanhi_atan[] = { 4.6364760399e-01, 7.8539812565e-01, 9.8279368877e-01, 1.5707962513e+00, }; [L34-L39] static const float atanlo_atan[] = { 5.0121582440e-09, 3.7748947079e-08, 3.4473217170e-08, 7.5497894159e-08, }; [L41-L45] static const float aT_atan[] = { 3.3333334327e-01, -2.0000000298e-01, 1.4285714924e-01, -1.1111110449e-01, 9.0908870101e-02, -7.6918758452e-02, 6.6610731184e-02, -5.8335702866e-02, 4.9768779427e-02, -3.6531571299e-02, 1.6285819933e-02, }; [L47-L49] static const float one_atan = 1.0, huge_atan = 1.0e30, pi_o_4 = 7.8539818525e-01, pi_o_2 = 1.5707963705e+00, pi = 3.1415927410e+00; [L115-L116] static const float tiny_atan2 = 1.0e-30, zero_atan2 = 0.0, pi_lo_atan2 = -8.7422776573e-08; [L220] float x = -0.0f; [L221] float y = 0.0f; [L222] CALL, EXPR __ieee754_atan2f(y, x) [L119] float z; [L120] __int32_t k, m, hx, hy, ix, iy; [L123] ieee_float_shape_type gf_u; [L124] gf_u.value = (x) [L125] EXPR gf_u.word [L125] (hx) = gf_u.word [L127] ix = hx & 0x7fffffff [L129] ieee_float_shape_type gf_u; [L130] gf_u.value = (y) [L131] EXPR gf_u.word [L131] (hy) = gf_u.word [L133] iy = hy & 0x7fffffff [L134] COND TRUE ((ix) > 0x7f800000L) || ((iy) > 0x7f800000L) [L135] return x + y; [L222] RET, EXPR __ieee754_atan2f(y, x) [L222] float res = __ieee754_atan2f(y, x); [L225] COND TRUE res != pi [L226] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 99 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 134 SDtfs, 8 SDslu, 125 SDs, 0 SdLazy, 133 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=99occurred 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, 0.5s 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...