/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_0681a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 23:18:49,924 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 23:18:49,928 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 23:18:49,971 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 23:18:49,972 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 23:18:49,980 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 23:18:49,982 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 23:18:49,985 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 23:18:49,988 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 23:18:49,991 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 23:18:49,992 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 23:18:49,993 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 23:18:49,993 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 23:18:49,997 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 23:18:50,000 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 23:18:50,002 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 23:18:50,003 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 23:18:50,004 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 23:18:50,006 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 23:18:50,014 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 23:18:50,016 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 23:18:50,017 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 23:18:50,018 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 23:18:50,019 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 23:18:50,031 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 23:18:50,032 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 23:18:50,037 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 23:18:50,038 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 23:18:50,039 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 23:18:50,043 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 23:18:50,043 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 23:18:50,044 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 23:18:50,044 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 23:18:50,045 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 23:18:50,048 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 23:18:50,049 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 23:18:50,050 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 23:18:50,050 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 23:18:50,050 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 23:18:50,051 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 23:18:50,052 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 23:18:50,053 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 23:18:50,092 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 23:18:50,093 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 23:18:50,094 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 23:18:50,095 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 23:18:50,095 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 23:18:50,095 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 23:18:50,096 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 23:18:50,096 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 23:18:50,096 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 23:18:50,096 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 23:18:50,097 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 23:18:50,098 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 23:18:50,098 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 23:18:50,098 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 23:18:50,098 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 23:18:50,099 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 23:18:50,099 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 23:18:50,099 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 23:18:50,099 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 23:18:50,100 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 23:18:50,100 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 23:18:50,100 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:18:50,100 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 23:18:50,101 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 23:18:50,101 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 23:18:50,101 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 23:18:50,101 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 23:18:50,101 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 23:18:50,101 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 23:18:50,102 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 23:18:50,393 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 23:18:50,406 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 23:18:50,410 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 23:18:50,412 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 23:18:50,412 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 23:18:50,413 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0681a.c [2020-10-14 23:18:50,479 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8c68c0e7b/e115ae69656843879b44a217a724b684/FLAGa43ad9ce5 [2020-10-14 23:18:50,962 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 23:18:50,962 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_0681a.c [2020-10-14 23:18:50,971 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8c68c0e7b/e115ae69656843879b44a217a724b684/FLAGa43ad9ce5 [2020-10-14 23:18:51,316 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8c68c0e7b/e115ae69656843879b44a217a724b684 [2020-10-14 23:18:51,327 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 23:18:51,329 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 23:18:51,330 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 23:18:51,330 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 23:18:51,334 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 23:18:51,335 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:18:51" (1/1) ... [2020-10-14 23:18:51,338 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e4836d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:51, skipping insertion in model container [2020-10-14 23:18:51,338 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:18:51" (1/1) ... [2020-10-14 23:18:51,346 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 23:18:51,374 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 23:18:51,620 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:18:51,629 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 23:18:51,802 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:18:51,830 INFO L208 MainTranslator]: Completed translation [2020-10-14 23:18:51,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:51 WrapperNode [2020-10-14 23:18:51,831 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 23:18:51,832 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 23:18:51,832 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 23:18:51,832 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 23:18:51,847 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:51" (1/1) ... [2020-10-14 23:18:51,848 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:51" (1/1) ... [2020-10-14 23:18:51,862 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:51" (1/1) ... [2020-10-14 23:18:51,863 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:51" (1/1) ... [2020-10-14 23:18:51,889 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:51" (1/1) ... [2020-10-14 23:18:51,900 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:51" (1/1) ... [2020-10-14 23:18:51,903 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:51" (1/1) ... [2020-10-14 23:18:51,908 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 23:18:51,909 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 23:18:51,909 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 23:18:51,909 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 23:18:51,910 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:51" (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 23:18:51,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 23:18:51,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 23:18:51,979 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2020-10-14 23:18:51,979 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_float [2020-10-14 23:18:51,979 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_atan2f [2020-10-14 23:18:51,979 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-10-14 23:18:51,979 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 23:18:51,980 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 23:18:51,980 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-14 23:18:51,980 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2020-10-14 23:18:51,980 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 23:18:51,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-14 23:18:51,981 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 23:18:51,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 23:18:51,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 23:18:51,981 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-14 23:18:51,981 INFO L130 BoogieDeclarations]: Found specification of procedure atan_float [2020-10-14 23:18:51,981 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_atan2f [2020-10-14 23:18:51,981 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-10-14 23:18:51,982 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 23:18:51,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 23:18:51,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-14 23:18:51,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 23:18:52,586 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 23:18:52,587 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-14 23:18:52,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:18:52 BoogieIcfgContainer [2020-10-14 23:18:52,592 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 23:18:52,594 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 23:18:52,594 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 23:18:52,597 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 23:18:52,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:18:51" (1/3) ... [2020-10-14 23:18:52,598 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b0dc978 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:18:52, skipping insertion in model container [2020-10-14 23:18:52,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:51" (2/3) ... [2020-10-14 23:18:52,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b0dc978 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:18:52, skipping insertion in model container [2020-10-14 23:18:52,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:18:52" (3/3) ... [2020-10-14 23:18:52,601 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_0681a.c [2020-10-14 23:18:52,612 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 23:18:52,620 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 23:18:52,631 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 23:18:52,653 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 23:18:52,653 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 23:18:52,653 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 23:18:52,654 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 23:18:52,654 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 23:18:52,654 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 23:18:52,654 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 23:18:52,654 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 23:18:52,679 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states. [2020-10-14 23:18:52,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-14 23:18:52,687 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:18:52,688 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 23:18:52,688 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:18:52,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:18:52,693 INFO L82 PathProgramCache]: Analyzing trace with hash 1444365816, now seen corresponding path program 1 times [2020-10-14 23:18:52,700 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:18:52,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [38834366] [2020-10-14 23:18:52,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:18:52,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:18:52,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:18:53,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:18:53,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:18:53,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 23:18:53,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:18:53,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 246 [2020-10-14 23:18:53,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:18:53,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:18:53,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:18:53,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 23:18:53,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:18:53,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 23:18:53,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:18:53,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:18:53,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:18:53,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:18:53,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:18:53,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:18:53,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 23:18:53,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:18:53,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:18:53,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:18:53,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:18:53,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:18:53,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:18:53,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:18:53,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:18:53,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:18:53,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:18:53,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:18:53,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 23:18:53,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:18:53,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 23:18:53,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:18:53,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:18:53,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:18:53,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-14 23:18:53,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:18:53,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:18:53,400 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 23:18:53,401 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [38834366] [2020-10-14 23:18:53,402 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:18:53,403 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 23:18:53,404 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308654619] [2020-10-14 23:18:53,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 23:18:53,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:18:53,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 23:18:53,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 23:18:53,427 INFO L87 Difference]: Start difference. First operand 108 states. Second operand 4 states. [2020-10-14 23:18:53,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:18:53,873 INFO L93 Difference]: Finished difference Result 208 states and 327 transitions. [2020-10-14 23:18:53,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:18:53,875 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-10-14 23:18:53,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:18:53,887 INFO L225 Difference]: With dead ends: 208 [2020-10-14 23:18:53,888 INFO L226 Difference]: Without dead ends: 104 [2020-10-14 23:18:53,893 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 23:18:53,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-14 23:18:53,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2020-10-14 23:18:53,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-14 23:18:53,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 144 transitions. [2020-10-14 23:18:53,951 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 144 transitions. Word has length 19 [2020-10-14 23:18:53,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:18:53,951 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 144 transitions. [2020-10-14 23:18:53,951 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 23:18:53,951 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 144 transitions. [2020-10-14 23:18:53,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-14 23:18:53,953 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:18:53,953 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 23:18:53,953 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 23:18:53,954 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:18:53,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:18:53,954 INFO L82 PathProgramCache]: Analyzing trace with hash 1274798767, now seen corresponding path program 1 times [2020-10-14 23:18:53,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:18:53,955 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1784354229] [2020-10-14 23:18:53,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:18:54,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-14 23:18:54,007 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-14 23:18:54,008 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-14 23:18:54,013 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 23:18:54,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 11:18:54 BoogieIcfgContainer [2020-10-14 23:18:54,031 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 23:18:54,034 INFO L168 Benchmark]: Toolchain (without parser) took 2704.67 ms. Allocated memory was 148.4 MB in the beginning and 233.3 MB in the end (delta: 84.9 MB). Free memory was 103.5 MB in the beginning and 127.3 MB in the end (delta: -23.8 MB). Peak memory consumption was 61.1 MB. Max. memory is 7.1 GB. [2020-10-14 23:18:54,035 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 148.4 MB. Free memory was 121.7 MB in the beginning and 121.3 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. [2020-10-14 23:18:54,036 INFO L168 Benchmark]: CACSL2BoogieTranslator took 501.33 ms. Allocated memory was 148.4 MB in the beginning and 206.6 MB in the end (delta: 58.2 MB). Free memory was 103.5 MB in the beginning and 181.2 MB in the end (delta: -77.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. [2020-10-14 23:18:54,037 INFO L168 Benchmark]: Boogie Preprocessor took 76.83 ms. Allocated memory is still 206.6 MB. Free memory was 181.2 MB in the beginning and 178.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-10-14 23:18:54,038 INFO L168 Benchmark]: RCFGBuilder took 683.57 ms. Allocated memory is still 206.6 MB. Free memory was 177.5 MB in the beginning and 136.4 MB in the end (delta: 41.1 MB). Peak memory consumption was 41.1 MB. Max. memory is 7.1 GB. [2020-10-14 23:18:54,039 INFO L168 Benchmark]: TraceAbstraction took 1437.39 ms. Allocated memory was 206.6 MB in the beginning and 233.3 MB in the end (delta: 26.7 MB). Free memory was 135.5 MB in the beginning and 127.3 MB in the end (delta: 8.2 MB). Peak memory consumption was 34.9 MB. Max. memory is 7.1 GB. [2020-10-14 23:18:54,043 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 148.4 MB. Free memory was 121.7 MB in the beginning and 121.3 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 501.33 ms. Allocated memory was 148.4 MB in the beginning and 206.6 MB in the end (delta: 58.2 MB). Free memory was 103.5 MB in the beginning and 181.2 MB in the end (delta: -77.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 76.83 ms. Allocated memory is still 206.6 MB. Free memory was 181.2 MB in the beginning and 178.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 683.57 ms. Allocated memory is still 206.6 MB. Free memory was 177.5 MB in the beginning and 136.4 MB in the end (delta: 41.1 MB). Peak memory consumption was 41.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1437.39 ms. Allocated memory was 206.6 MB in the beginning and 233.3 MB in the end (delta: 26.7 MB). Free memory was 135.5 MB in the beginning and 127.3 MB in the end (delta: 8.2 MB). Peak memory consumption was 34.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 239]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 238, overapproximation of someUnaryDOUBLEoperation at line 42, overapproximation of bitwiseAnd at line 133, overapproximation of someUnaryFLOAToperation at line 234, 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; [L233] float x = 0.0f; [L234] float y = -0.0f; [L235] 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; [L235] RET, EXPR __ieee754_atan2f(y, x) [L235] float res = __ieee754_atan2f(y, x); [L238] EXPR res == -0.0f && __signbit_float(res) == 1 [L238] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L239] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 108 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: 143 SDtfs, 10 SDslu, 133 SDs, 0 SdLazy, 142 SolverSat, 14 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=108occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 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...