/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1122b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 10:20:18,437 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 10:20:18,440 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 10:20:18,482 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 10:20:18,482 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 10:20:18,490 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 10:20:18,492 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 10:20:18,496 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 10:20:18,498 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 10:20:18,501 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 10:20:18,502 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 10:20:18,503 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 10:20:18,503 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 10:20:18,506 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 10:20:18,508 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 10:20:18,510 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 10:20:18,511 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 10:20:18,512 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 10:20:18,513 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 10:20:18,521 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 10:20:18,523 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 10:20:18,524 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 10:20:18,525 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 10:20:18,526 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 10:20:18,528 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 10:20:18,528 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 10:20:18,529 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 10:20:18,529 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 10:20:18,530 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 10:20:18,534 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 10:20:18,534 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 10:20:18,535 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 10:20:18,539 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 10:20:18,539 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 10:20:18,540 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 10:20:18,543 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 10:20:18,544 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 10:20:18,544 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 10:20:18,544 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 10:20:18,545 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 10:20:18,546 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 10:20:18,547 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 10:20:18,568 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 10:20:18,568 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 10:20:18,569 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 10:20:18,569 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 10:20:18,570 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 10:20:18,570 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 10:20:18,570 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 10:20:18,570 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 10:20:18,570 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 10:20:18,571 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 10:20:18,571 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 10:20:18,571 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 10:20:18,571 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 10:20:18,571 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 10:20:18,571 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 10:20:18,574 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 10:20:18,574 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 10:20:18,575 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 10:20:18,575 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 10:20:18,575 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 10:20:18,575 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 10:20:18,575 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 10:20:18,575 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 10:20:18,576 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 10:20:18,576 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 10:20:18,576 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 10:20:18,576 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 10:20:18,576 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 10:20:18,577 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 10:20:18,577 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 10:20:18,861 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 10:20:18,874 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 10:20:18,878 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 10:20:18,879 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 10:20:18,880 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 10:20:18,880 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1122b.c [2020-10-13 10:20:18,937 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/59a096dca/9277f26c722440e3aca9c817ba264ed3/FLAG7778a3358 [2020-10-13 10:20:19,462 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 10:20:19,463 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1122b.c [2020-10-13 10:20:19,473 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/59a096dca/9277f26c722440e3aca9c817ba264ed3/FLAG7778a3358 [2020-10-13 10:20:19,812 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/59a096dca/9277f26c722440e3aca9c817ba264ed3 [2020-10-13 10:20:19,820 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 10:20:19,821 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 10:20:19,822 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 10:20:19,823 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 10:20:19,826 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 10:20:19,827 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:20:19" (1/1) ... [2020-10-13 10:20:19,830 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@703d1064 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:20:19, skipping insertion in model container [2020-10-13 10:20:19,831 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:20:19" (1/1) ... [2020-10-13 10:20:19,838 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 10:20:19,875 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 10:20:20,107 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:20:20,113 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 10:20:20,240 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:20:20,262 INFO L208 MainTranslator]: Completed translation [2020-10-13 10:20:20,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:20:20 WrapperNode [2020-10-13 10:20:20,262 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 10:20:20,263 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 10:20:20,263 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 10:20:20,263 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 10:20:20,274 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:20:20" (1/1) ... [2020-10-13 10:20:20,274 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:20:20" (1/1) ... [2020-10-13 10:20:20,284 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:20:20" (1/1) ... [2020-10-13 10:20:20,285 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:20:20" (1/1) ... [2020-10-13 10:20:20,299 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:20:20" (1/1) ... [2020-10-13 10:20:20,308 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:20:20" (1/1) ... [2020-10-13 10:20:20,311 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:20:20" (1/1) ... [2020-10-13 10:20:20,314 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 10:20:20,315 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 10:20:20,315 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 10:20:20,315 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 10:20:20,316 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:20:20" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 10:20:20,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 10:20:20,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 10:20:20,375 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-10-13 10:20:20,375 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2020-10-13 10:20:20,375 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 10:20:20,375 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 10:20:20,375 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-13 10:20:20,375 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-10-13 10:20:20,376 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 10:20:20,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-13 10:20:20,376 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 10:20:20,376 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 10:20:20,376 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-13 10:20:20,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 10:20:20,377 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2020-10-13 10:20:20,377 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 10:20:20,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 10:20:20,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-13 10:20:20,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 10:20:20,811 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 10:20:20,811 INFO L295 CfgBuilder]: Removed 12 assume(true) statements. [2020-10-13 10:20:20,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:20:20 BoogieIcfgContainer [2020-10-13 10:20:20,816 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 10:20:20,817 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 10:20:20,817 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 10:20:20,820 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 10:20:20,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:20:19" (1/3) ... [2020-10-13 10:20:20,822 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@198fada4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:20:20, skipping insertion in model container [2020-10-13 10:20:20,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:20:20" (2/3) ... [2020-10-13 10:20:20,822 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@198fada4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:20:20, skipping insertion in model container [2020-10-13 10:20:20,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:20:20" (3/3) ... [2020-10-13 10:20:20,824 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1122b.c [2020-10-13 10:20:20,838 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 10:20:20,849 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 10:20:20,861 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 10:20:20,882 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 10:20:20,882 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 10:20:20,882 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 10:20:20,882 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 10:20:20,882 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 10:20:20,883 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 10:20:20,883 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 10:20:20,883 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 10:20:20,901 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states. [2020-10-13 10:20:20,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-13 10:20:20,908 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:20:20,909 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:20:20,909 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:20:20,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:20:20,914 INFO L82 PathProgramCache]: Analyzing trace with hash 527256461, now seen corresponding path program 1 times [2020-10-13 10:20:20,921 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:20:20,922 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1015057471] [2020-10-13 10:20:20,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:20:21,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:20:21,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:21,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:21,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:20:21,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 10:20:21,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:20:21,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 234 [2020-10-13 10:20:21,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:20:21,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:20:21,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 10:20:21,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:20:21,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 10:20:21,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:20:21,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:20:21,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:21,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:20:21,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:20:21,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:20:21,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 10:20:21,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:20:21,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:20:21,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:20:21,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:20:21,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:20:21,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:20:21,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:20:21,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:21,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:21,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:20:21,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 10:20:21,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:20:21,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-13 10:20:21,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:20:21,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:20:21,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-13 10:20:21,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:20:21,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:20:21,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 10:20:21,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:20:21,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:21,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:20:21,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:20:21,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:20:21,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 10:20:21,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:20:21,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:20:21,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 10:20:21,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:20:21,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:20:21,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:20:21,488 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1015057471] [2020-10-13 10:20:21,490 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:20:21,491 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 10:20:21,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861227593] [2020-10-13 10:20:21,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 10:20:21,501 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:20:21,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 10:20:21,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:20:21,519 INFO L87 Difference]: Start difference. First operand 55 states. Second operand 4 states. [2020-10-13 10:20:21,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:20:21,817 INFO L93 Difference]: Finished difference Result 102 states and 158 transitions. [2020-10-13 10:20:21,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 10:20:21,820 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-10-13 10:20:21,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:20:21,844 INFO L225 Difference]: With dead ends: 102 [2020-10-13 10:20:21,845 INFO L226 Difference]: Without dead ends: 51 [2020-10-13 10:20:21,848 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 10:20:21,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-13 10:20:21,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-10-13 10:20:21,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-13 10:20:21,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 66 transitions. [2020-10-13 10:20:21,896 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 66 transitions. Word has length 22 [2020-10-13 10:20:21,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:20:21,896 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 66 transitions. [2020-10-13 10:20:21,896 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 10:20:21,897 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 66 transitions. [2020-10-13 10:20:21,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-13 10:20:21,898 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:20:21,898 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:20:21,898 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 10:20:21,899 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:20:21,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:20:21,899 INFO L82 PathProgramCache]: Analyzing trace with hash 847326186, now seen corresponding path program 1 times [2020-10-13 10:20:21,899 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:20:21,900 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [192108359] [2020-10-13 10:20:21,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:20:21,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-13 10:20:21,940 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-13 10:20:21,940 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-13 10:20:21,946 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 10:20:21,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 10:20:21 BoogieIcfgContainer [2020-10-13 10:20:21,964 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-13 10:20:21,967 INFO L168 Benchmark]: Toolchain (without parser) took 2144.35 ms. Allocated memory was 145.2 MB in the beginning and 234.4 MB in the end (delta: 89.1 MB). Free memory was 102.4 MB in the beginning and 195.6 MB in the end (delta: -93.2 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-13 10:20:21,968 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 145.2 MB. Free memory was 120.6 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-13 10:20:21,969 INFO L168 Benchmark]: CACSL2BoogieTranslator took 440.17 ms. Allocated memory was 145.2 MB in the beginning and 203.9 MB in the end (delta: 58.7 MB). Free memory was 102.0 MB in the beginning and 180.7 MB in the end (delta: -78.7 MB). Peak memory consumption was 19.6 MB. Max. memory is 7.1 GB. [2020-10-13 10:20:21,970 INFO L168 Benchmark]: Boogie Preprocessor took 51.62 ms. Allocated memory is still 203.9 MB. Free memory was 180.7 MB in the beginning and 178.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. [2020-10-13 10:20:21,970 INFO L168 Benchmark]: RCFGBuilder took 501.04 ms. Allocated memory is still 203.9 MB. Free memory was 178.1 MB in the beginning and 151.7 MB in the end (delta: 26.4 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. [2020-10-13 10:20:21,971 INFO L168 Benchmark]: TraceAbstraction took 1146.94 ms. Allocated memory was 203.9 MB in the beginning and 234.4 MB in the end (delta: 30.4 MB). Free memory was 151.1 MB in the beginning and 195.6 MB in the end (delta: -44.5 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-13 10:20:21,975 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 145.2 MB. Free memory was 120.6 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 440.17 ms. Allocated memory was 145.2 MB in the beginning and 203.9 MB in the end (delta: 58.7 MB). Free memory was 102.0 MB in the beginning and 180.7 MB in the end (delta: -78.7 MB). Peak memory consumption was 19.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 51.62 ms. Allocated memory is still 203.9 MB. Free memory was 180.7 MB in the beginning and 178.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 501.04 ms. Allocated memory is still 203.9 MB. Free memory was 178.1 MB in the beginning and 151.7 MB in the end (delta: 26.4 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1146.94 ms. Allocated memory was 203.9 MB in the beginning and 234.4 MB in the end (delta: 30.4 MB). Free memory was 151.1 MB in the beginning and 195.6 MB in the end (delta: -44.5 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 123]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 108, overapproximation of someUnaryDOUBLEoperation at line 14, overapproximation of bitwiseAnd at line 30, overapproximation of someBinaryArithmeticFLOAToperation at line 35, overapproximation of bitwiseXor at line 31. Possible FailurePath: [L12-L15] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L117] float x = -1.0f / 0.0f; [L118] float y = __VERIFIER_nondet_float(); [L119] CALL, EXPR fmod_float(x, y) [L18] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L21] ieee_float_shape_type gf_u; [L22] gf_u.value = (x) [L23] EXPR gf_u.word [L23] (hx) = gf_u.word [L26] ieee_float_shape_type gf_u; [L27] gf_u.value = (y) [L28] EXPR gf_u.word [L28] (hy) = gf_u.word [L30] sx = hx & 0x80000000 [L31] hx ^= sx [L32] hy &= 0x7fffffff [L34] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) [L35] return (x * y) / (x * y); [L119] RET, EXPR fmod_float(x, y) [L119] float res = fmod_float(x, y); [L122] CALL, EXPR isnan_float(res) [L108] return x != x; [L122] RET, EXPR isnan_float(res) [L122] COND TRUE !isnan_float(res) [L123] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 55 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 68 SDtfs, 8 SDslu, 55 SDs, 0 SdLazy, 71 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 1134 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...