/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_0680b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 23:18:49,430 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 23:18:49,434 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 23:18:49,472 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 23:18:49,473 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 23:18:49,480 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 23:18:49,482 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 23:18:49,485 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 23:18:49,487 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 23:18:49,491 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 23:18:49,492 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 23:18:49,493 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 23:18:49,493 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 23:18:49,496 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 23:18:49,498 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 23:18:49,500 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 23:18:49,501 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 23:18:49,502 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 23:18:49,503 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 23:18:49,511 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 23:18:49,513 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 23:18:49,514 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 23:18:49,515 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 23:18:49,515 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 23:18:49,527 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 23:18:49,528 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 23:18:49,529 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 23:18:49,535 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 23:18:49,536 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 23:18:49,537 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 23:18:49,537 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 23:18:49,538 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 23:18:49,540 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 23:18:49,541 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 23:18:49,542 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 23:18:49,542 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 23:18:49,543 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 23:18:49,546 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 23:18:49,546 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 23:18:49,549 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 23:18:49,549 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 23:18:49,550 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 23:18:49,587 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 23:18:49,587 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 23:18:49,590 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 23:18:49,590 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 23:18:49,590 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 23:18:49,590 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 23:18:49,590 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 23:18:49,591 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 23:18:49,591 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 23:18:49,591 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 23:18:49,592 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 23:18:49,592 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 23:18:49,592 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 23:18:49,593 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 23:18:49,593 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 23:18:49,593 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 23:18:49,593 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 23:18:49,594 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 23:18:49,594 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 23:18:49,594 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 23:18:49,594 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 23:18:49,595 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:18:49,595 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 23:18:49,595 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 23:18:49,595 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 23:18:49,595 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 23:18:49,596 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 23:18:49,596 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 23:18:49,596 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 23:18:49,596 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 23:18:49,927 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 23:18:49,937 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 23:18:49,943 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 23:18:49,945 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 23:18:49,945 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 23:18:49,946 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0680b.c [2020-10-14 23:18:50,008 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f21542070/0ec2b6be44bd46eea7b9b196ff00741c/FLAG6cfa7c4e9 [2020-10-14 23:18:50,480 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 23:18:50,481 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_0680b.c [2020-10-14 23:18:50,493 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f21542070/0ec2b6be44bd46eea7b9b196ff00741c/FLAG6cfa7c4e9 [2020-10-14 23:18:50,794 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f21542070/0ec2b6be44bd46eea7b9b196ff00741c [2020-10-14 23:18:50,804 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 23:18:50,806 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 23:18:50,807 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 23:18:50,808 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 23:18:50,811 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 23:18:50,812 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:18:50" (1/1) ... [2020-10-14 23:18:50,815 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4122bc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:50, skipping insertion in model container [2020-10-14 23:18:50,815 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:18:50" (1/1) ... [2020-10-14 23:18:50,823 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 23:18:50,850 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 23:18:51,243 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:18:51,250 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 23:18:51,307 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:18:51,345 INFO L208 MainTranslator]: Completed translation [2020-10-14 23:18:51,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:51 WrapperNode [2020-10-14 23:18:51,346 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 23:18:51,346 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 23:18:51,347 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 23:18:51,347 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 23:18:51,357 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 23:18:51,357 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 23:18:51,373 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 23:18:51,374 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 23:18:51,397 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 23:18:51,413 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 23:18:51,418 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 23:18:51,425 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 23:18:51,425 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 23:18:51,425 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 23:18:51,425 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 23:18:51,426 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 23:18:51,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 23:18:51,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 23:18:51,489 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2020-10-14 23:18:51,489 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_float [2020-10-14 23:18:51,489 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_atan2f [2020-10-14 23:18:51,490 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 23:18:51,490 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 23:18:51,490 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-14 23:18:51,490 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2020-10-14 23:18:51,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 23:18:51,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-14 23:18:51,490 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 23:18:51,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 23:18:51,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 23:18:51,491 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-14 23:18:51,491 INFO L130 BoogieDeclarations]: Found specification of procedure atan_float [2020-10-14 23:18:51,492 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_atan2f [2020-10-14 23:18:51,492 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 23:18:51,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 23:18:51,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-14 23:18:51,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 23:18:52,103 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 23:18:52,103 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-10-14 23:18:52,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:18:52 BoogieIcfgContainer [2020-10-14 23:18:52,112 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 23:18:52,113 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 23:18:52,113 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 23:18:52,118 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 23:18:52,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:18:50" (1/3) ... [2020-10-14 23:18:52,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@716fabc8 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 23:18:52,120 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 23:18:52,120 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@716fabc8 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 23:18:52,121 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 23:18:52,123 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_0680b.c [2020-10-14 23:18:52,133 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 23:18:52,142 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 23:18:52,156 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 23:18:52,177 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 23:18:52,177 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 23:18:52,177 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 23:18:52,177 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 23:18:52,177 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 23:18:52,178 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 23:18:52,178 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 23:18:52,178 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 23:18:52,198 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states. [2020-10-14 23:18:52,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-14 23:18:52,205 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:18:52,206 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 23:18:52,206 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:18:52,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:18:52,211 INFO L82 PathProgramCache]: Analyzing trace with hash 1988302874, now seen corresponding path program 1 times [2020-10-14 23:18:52,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:18:52,219 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1622322872] [2020-10-14 23:18:52,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:18:52,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:18:52,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:18:52,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:18:52,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:18:52,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 23:18:52,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:18:52,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 288 [2020-10-14 23:18:52,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:18:52,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:18:52,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:18:52,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 23:18:52,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:18:52,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 23:18:52,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:18:52,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:18:52,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:18:52,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:18:52,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:18:52,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:18:52,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 23:18:52,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:18:52,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:18:52,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:18:52,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:18:52,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:18:52,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:18:52,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:18:52,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:18:52,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:18:52,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:18:52,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:18:52,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 23:18:52,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:18:52,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 23:18:52,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:18:52,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:18:52,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:18:52,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:18:52,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:18:52,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 23:18:52,932 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 23:18:52,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1622322872] [2020-10-14 23:18:52,935 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:18:52,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 23:18:52,937 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99297400] [2020-10-14 23:18:52,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 23:18:52,943 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:18:52,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 23:18:52,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 23:18:52,962 INFO L87 Difference]: Start difference. First operand 99 states. Second operand 4 states. [2020-10-14 23:18:53,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:18:53,384 INFO L93 Difference]: Finished difference Result 190 states and 302 transitions. [2020-10-14 23:18:53,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:18:53,386 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-10-14 23:18:53,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:18:53,399 INFO L225 Difference]: With dead ends: 190 [2020-10-14 23:18:53,399 INFO L226 Difference]: Without dead ends: 95 [2020-10-14 23:18:53,404 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 23:18:53,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-14 23:18:53,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2020-10-14 23:18:53,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-14 23:18:53,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 134 transitions. [2020-10-14 23:18:53,463 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 134 transitions. Word has length 18 [2020-10-14 23:18:53,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:18:53,464 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 134 transitions. [2020-10-14 23:18:53,464 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 23:18:53,464 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 134 transitions. [2020-10-14 23:18:53,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-14 23:18:53,465 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:18:53,465 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:18:53,466 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 23:18:53,466 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:18:53,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:18:53,467 INFO L82 PathProgramCache]: Analyzing trace with hash -796728189, now seen corresponding path program 1 times [2020-10-14 23:18:53,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:18:53,468 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1369077674] [2020-10-14 23:18:53,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:18:53,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-14 23:18:53,528 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-14 23:18:53,528 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-14 23:18:53,534 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 23:18:53,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 11:18:53 BoogieIcfgContainer [2020-10-14 23:18:53,562 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 23:18:53,566 INFO L168 Benchmark]: Toolchain (without parser) took 2758.02 ms. Allocated memory was 148.9 MB in the beginning and 231.7 MB in the end (delta: 82.8 MB). Free memory was 103.7 MB in the beginning and 128.5 MB in the end (delta: -24.7 MB). Peak memory consumption was 58.1 MB. Max. memory is 7.1 GB. [2020-10-14 23:18:53,568 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 148.9 MB. Free memory was 122.2 MB in the beginning and 121.8 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-10-14 23:18:53,569 INFO L168 Benchmark]: CACSL2BoogieTranslator took 538.61 ms. Allocated memory was 148.9 MB in the beginning and 204.5 MB in the end (delta: 55.6 MB). Free memory was 103.3 MB in the beginning and 177.0 MB in the end (delta: -73.7 MB). Peak memory consumption was 18.6 MB. Max. memory is 7.1 GB. [2020-10-14 23:18:53,570 INFO L168 Benchmark]: Boogie Preprocessor took 78.52 ms. Allocated memory is still 204.5 MB. Free memory was 177.0 MB in the beginning and 174.1 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2020-10-14 23:18:53,571 INFO L168 Benchmark]: RCFGBuilder took 686.98 ms. Allocated memory is still 204.5 MB. Free memory was 174.1 MB in the beginning and 135.0 MB in the end (delta: 39.2 MB). Peak memory consumption was 39.2 MB. Max. memory is 7.1 GB. [2020-10-14 23:18:53,581 INFO L168 Benchmark]: TraceAbstraction took 1448.82 ms. Allocated memory was 204.5 MB in the beginning and 231.7 MB in the end (delta: 27.3 MB). Free memory was 134.1 MB in the beginning and 128.5 MB in the end (delta: 5.6 MB). Peak memory consumption was 32.9 MB. Max. memory is 7.1 GB. [2020-10-14 23:18:53,591 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 148.9 MB. Free memory was 122.2 MB in the beginning and 121.8 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 538.61 ms. Allocated memory was 148.9 MB in the beginning and 204.5 MB in the end (delta: 55.6 MB). Free memory was 103.3 MB in the beginning and 177.0 MB in the end (delta: -73.7 MB). Peak memory consumption was 18.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 78.52 ms. Allocated memory is still 204.5 MB. Free memory was 177.0 MB in the beginning and 174.1 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 686.98 ms. Allocated memory is still 204.5 MB. Free memory was 174.1 MB in the beginning and 135.0 MB in the end (delta: 39.2 MB). Peak memory consumption was 39.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1448.82 ms. Allocated memory was 204.5 MB in the beginning and 231.7 MB in the end (delta: 27.3 MB). Free memory was 134.1 MB in the beginning and 128.5 MB in the end (delta: 5.6 MB). Peak memory consumption was 32.9 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 221, 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; [L221] float x = -0.0f; [L222] float y = -0.0f; [L224] 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; [L224] RET, EXPR __ieee754_atan2f(y, x) [L224] float res = __ieee754_atan2f(y, x); [L227] COND TRUE res != -pi [L228] __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...