/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_0662a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 23:18:44,540 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 23:18:44,543 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 23:18:44,567 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 23:18:44,567 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 23:18:44,568 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 23:18:44,569 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 23:18:44,571 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 23:18:44,573 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 23:18:44,574 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 23:18:44,575 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 23:18:44,576 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 23:18:44,576 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 23:18:44,577 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 23:18:44,578 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 23:18:44,579 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 23:18:44,580 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 23:18:44,581 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 23:18:44,582 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 23:18:44,584 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 23:18:44,586 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 23:18:44,587 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 23:18:44,588 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 23:18:44,590 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 23:18:44,592 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 23:18:44,592 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 23:18:44,593 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 23:18:44,594 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 23:18:44,594 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 23:18:44,595 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 23:18:44,595 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 23:18:44,596 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 23:18:44,596 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 23:18:44,597 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 23:18:44,598 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 23:18:44,598 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 23:18:44,599 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 23:18:44,599 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 23:18:44,599 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 23:18:44,600 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 23:18:44,601 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 23:18:44,602 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 23:18:44,625 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 23:18:44,625 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 23:18:44,627 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 23:18:44,627 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 23:18:44,627 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 23:18:44,627 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 23:18:44,628 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 23:18:44,628 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 23:18:44,628 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 23:18:44,628 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 23:18:44,628 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 23:18:44,628 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 23:18:44,629 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 23:18:44,629 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 23:18:44,629 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 23:18:44,629 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 23:18:44,629 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 23:18:44,630 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 23:18:44,630 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 23:18:44,630 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 23:18:44,630 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 23:18:44,630 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:18:44,631 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 23:18:44,631 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 23:18:44,631 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 23:18:44,631 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 23:18:44,631 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 23:18:44,632 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 23:18:44,632 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 23:18:44,632 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 23:18:44,918 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 23:18:44,931 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 23:18:44,934 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 23:18:44,936 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 23:18:44,936 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 23:18:44,937 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0662a.c [2020-10-14 23:18:44,998 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d150278e9/217e2771ad704414b99fb20eda545461/FLAG5058d93b0 [2020-10-14 23:18:45,502 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 23:18:45,502 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_0662a.c [2020-10-14 23:18:45,511 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d150278e9/217e2771ad704414b99fb20eda545461/FLAG5058d93b0 [2020-10-14 23:18:45,829 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d150278e9/217e2771ad704414b99fb20eda545461 [2020-10-14 23:18:45,839 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 23:18:45,841 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 23:18:45,842 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 23:18:45,842 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 23:18:45,846 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 23:18:45,848 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:18:45" (1/1) ... [2020-10-14 23:18:45,851 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@130f42b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:45, skipping insertion in model container [2020-10-14 23:18:45,851 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:18:45" (1/1) ... [2020-10-14 23:18:45,859 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 23:18:45,889 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 23:18:46,123 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:18:46,131 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 23:18:46,310 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:18:46,337 INFO L208 MainTranslator]: Completed translation [2020-10-14 23:18:46,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:46 WrapperNode [2020-10-14 23:18:46,338 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 23:18:46,339 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 23:18:46,339 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 23:18:46,339 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 23:18:46,353 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:46" (1/1) ... [2020-10-14 23:18:46,353 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:46" (1/1) ... [2020-10-14 23:18:46,368 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:46" (1/1) ... [2020-10-14 23:18:46,368 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:46" (1/1) ... [2020-10-14 23:18:46,392 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:46" (1/1) ... [2020-10-14 23:18:46,403 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:46" (1/1) ... [2020-10-14 23:18:46,406 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:46" (1/1) ... [2020-10-14 23:18:46,411 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 23:18:46,412 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 23:18:46,412 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 23:18:46,412 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 23:18:46,413 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:46" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:18:46,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 23:18:46,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 23:18:46,486 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2020-10-14 23:18:46,487 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_float [2020-10-14 23:18:46,487 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_atan2f [2020-10-14 23:18:46,487 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 23:18:46,487 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 23:18:46,487 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-14 23:18:46,487 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2020-10-14 23:18:46,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 23:18:46,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-14 23:18:46,488 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 23:18:46,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 23:18:46,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 23:18:46,488 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-14 23:18:46,489 INFO L130 BoogieDeclarations]: Found specification of procedure atan_float [2020-10-14 23:18:46,489 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_atan2f [2020-10-14 23:18:46,489 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 23:18:46,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 23:18:46,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-14 23:18:46,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 23:18:47,151 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 23:18:47,151 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-10-14 23:18:47,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:18:47 BoogieIcfgContainer [2020-10-14 23:18:47,157 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 23:18:47,158 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 23:18:47,159 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 23:18:47,162 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 23:18:47,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:18:45" (1/3) ... [2020-10-14 23:18:47,163 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50b3425a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:18:47, skipping insertion in model container [2020-10-14 23:18:47,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:46" (2/3) ... [2020-10-14 23:18:47,164 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50b3425a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:18:47, skipping insertion in model container [2020-10-14 23:18:47,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:18:47" (3/3) ... [2020-10-14 23:18:47,166 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_0662a.c [2020-10-14 23:18:47,176 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 23:18:47,184 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 23:18:47,198 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 23:18:47,225 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 23:18:47,225 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 23:18:47,226 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 23:18:47,226 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 23:18:47,226 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 23:18:47,227 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 23:18:47,227 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 23:18:47,227 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 23:18:47,252 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states. [2020-10-14 23:18:47,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-14 23:18:47,258 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:18:47,259 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:18:47,260 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:18:47,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:18:47,265 INFO L82 PathProgramCache]: Analyzing trace with hash -1526168591, now seen corresponding path program 1 times [2020-10-14 23:18:47,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:18:47,272 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1920596514] [2020-10-14 23:18:47,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:18:47,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:18:47,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:18:47,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:18:47,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:18:47,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 23:18:47,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:18:47,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 310 [2020-10-14 23:18:47,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:18:47,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:18:47,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:18:47,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 23:18:47,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:18:47,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 23:18:47,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:18:47,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:18:47,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:18:47,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:18:47,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:18:47,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:18:47,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 23:18:47,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:18:47,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:18:47,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:18:47,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:18:47,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:18:47,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:18:47,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 23:18:47,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:18:47,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:18:47,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:18:47,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:18:47,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 23:18:47,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:18:47,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 23:18:47,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:18:47,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:18:47,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:18:47,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-14 23:18:47,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:18:47,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:18:47,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:18:47,935 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1920596514] [2020-10-14 23:18:47,937 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:18:47,937 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 23:18:47,938 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778504076] [2020-10-14 23:18:47,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 23:18:47,944 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:18:47,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 23:18:47,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 23:18:47,962 INFO L87 Difference]: Start difference. First operand 101 states. Second operand 4 states. [2020-10-14 23:18:48,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:18:48,381 INFO L93 Difference]: Finished difference Result 196 states and 309 transitions. [2020-10-14 23:18:48,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:18:48,383 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-10-14 23:18:48,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:18:48,395 INFO L225 Difference]: With dead ends: 196 [2020-10-14 23:18:48,395 INFO L226 Difference]: Without dead ends: 96 [2020-10-14 23:18:48,400 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 23:18:48,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-14 23:18:48,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2020-10-14 23:18:48,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-14 23:18:48,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 135 transitions. [2020-10-14 23:18:48,457 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 135 transitions. Word has length 19 [2020-10-14 23:18:48,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:18:48,458 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 135 transitions. [2020-10-14 23:18:48,458 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 23:18:48,458 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 135 transitions. [2020-10-14 23:18:48,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-14 23:18:48,459 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:18:48,459 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:18:48,460 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 23:18:48,460 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:18:48,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:18:48,461 INFO L82 PathProgramCache]: Analyzing trace with hash 1732400538, now seen corresponding path program 1 times [2020-10-14 23:18:48,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:18:48,462 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1852382707] [2020-10-14 23:18:48,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:18:48,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-14 23:18:48,517 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-14 23:18:48,517 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-14 23:18:48,522 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 23:18:48,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 11:18:48 BoogieIcfgContainer [2020-10-14 23:18:48,541 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 23:18:48,544 INFO L168 Benchmark]: Toolchain (without parser) took 2702.17 ms. Allocated memory was 147.3 MB in the beginning and 235.9 MB in the end (delta: 88.6 MB). Free memory was 103.3 MB in the beginning and 134.5 MB in the end (delta: -31.3 MB). Peak memory consumption was 57.3 MB. Max. memory is 7.1 GB. [2020-10-14 23:18:48,545 INFO L168 Benchmark]: CDTParser took 0.22 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: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-10-14 23:18:48,546 INFO L168 Benchmark]: CACSL2BoogieTranslator took 496.23 ms. Allocated memory was 147.3 MB in the beginning and 203.9 MB in the end (delta: 56.6 MB). Free memory was 102.8 MB in the beginning and 178.2 MB in the end (delta: -75.4 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. [2020-10-14 23:18:48,547 INFO L168 Benchmark]: Boogie Preprocessor took 72.57 ms. Allocated memory is still 203.9 MB. Free memory was 178.2 MB in the beginning and 175.3 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2020-10-14 23:18:48,548 INFO L168 Benchmark]: RCFGBuilder took 745.45 ms. Allocated memory is still 203.9 MB. Free memory was 175.3 MB in the beginning and 135.8 MB in the end (delta: 39.5 MB). Peak memory consumption was 39.5 MB. Max. memory is 7.1 GB. [2020-10-14 23:18:48,549 INFO L168 Benchmark]: TraceAbstraction took 1382.43 ms. Allocated memory was 203.9 MB in the beginning and 235.9 MB in the end (delta: 32.0 MB). Free memory was 134.8 MB in the beginning and 134.5 MB in the end (delta: 289.3 kB). Peak memory consumption was 32.3 MB. Max. memory is 7.1 GB. [2020-10-14 23:18:48,553 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 496.23 ms. Allocated memory was 147.3 MB in the beginning and 203.9 MB in the end (delta: 56.6 MB). Free memory was 102.8 MB in the beginning and 178.2 MB in the end (delta: -75.4 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 72.57 ms. Allocated memory is still 203.9 MB. Free memory was 178.2 MB in the beginning and 175.3 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 745.45 ms. Allocated memory is still 203.9 MB. Free memory was 175.3 MB in the beginning and 135.8 MB in the end (delta: 39.5 MB). Peak memory consumption was 39.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1382.43 ms. Allocated memory was 203.9 MB in the beginning and 235.9 MB in the end (delta: 32.0 MB). Free memory was 134.8 MB in the beginning and 134.5 MB in the end (delta: 289.3 kB). Peak memory consumption was 32.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 228]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 227, overapproximation of someUnaryDOUBLEoperation at line 42, overapproximation of bitwiseAnd at line 133, overapproximation of someUnaryFLOAToperation at line 216, 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; [L216] float x = -0.0f; [L217] float y = __VERIFIER_nondet_float(); [L224] COND TRUE y < 0.0f [L225] 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; [L225] RET, EXPR __ieee754_atan2f(y, x) [L225] float res = __ieee754_atan2f(y, x); [L227] COND TRUE res != -pi_o_2 [L228] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 101 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: 137 SDtfs, 16 SDslu, 124 SDs, 0 SdLazy, 136 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=101occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 1512 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...