/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 SingleStatement --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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:05:33,341 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:05:33,345 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:05:33,372 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:05:33,373 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:05:33,374 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:05:33,376 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:05:33,378 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:05:33,380 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:05:33,381 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:05:33,382 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:05:33,384 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:05:33,384 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:05:33,389 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:05:33,390 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:05:33,394 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:05:33,395 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:05:33,398 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:05:33,400 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:05:33,405 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:05:33,411 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:05:33,412 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:05:33,416 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:05:33,417 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:05:33,420 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:05:33,420 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:05:33,420 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:05:33,424 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:05:33,425 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:05:33,427 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:05:33,428 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:05:33,429 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:05:33,431 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:05:33,432 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:05:33,441 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:05:33,442 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:05:33,442 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:05:33,443 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:05:33,443 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:05:33,446 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:05:33,448 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:05:33,449 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 [2020-09-25 11:05:33,496 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:05:33,497 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:05:33,499 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:05:33,499 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:05:33,499 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:05:33,500 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:05:33,500 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:05:33,500 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:05:33,500 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:05:33,501 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:05:33,502 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:05:33,502 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:05:33,502 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:05:33,503 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:05:33,503 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:05:33,503 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:05:33,503 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:05:33,504 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:05:33,504 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:05:33,504 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:05:33,504 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:05:33,504 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:05:33,505 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:05:33,505 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:05:33,505 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:05:33,505 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:05:33,505 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:05:33,506 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:05:33,506 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:05:33,506 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 -> SingleStatement 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; 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; 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; 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; 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; 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; [2020-09-25 11:05:34,023 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:05:34,041 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:05:34,046 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:05:34,049 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:05:34,050 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:05:34,051 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c [2020-09-25 11:05:34,127 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/71b91f9fe/16bc61d9b71349a0828e519d20bc72ea/FLAGcf9381e46 [2020-09-25 11:05:34,752 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:05:34,755 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c [2020-09-25 11:05:34,768 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/71b91f9fe/16bc61d9b71349a0828e519d20bc72ea/FLAGcf9381e46 [2020-09-25 11:05:35,091 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/71b91f9fe/16bc61d9b71349a0828e519d20bc72ea [2020-09-25 11:05:35,107 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:05:35,114 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:05:35,118 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:05:35,118 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:05:35,123 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:05:35,124 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:05:35" (1/1) ... [2020-09-25 11:05:35,130 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25ad3e3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:05:35, skipping insertion in model container [2020-09-25 11:05:35,130 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:05:35" (1/1) ... [2020-09-25 11:05:35,140 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:05:35,181 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:05:35,500 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:05:35,507 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:05:35,636 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:05:35,661 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:05:35,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:05:35 WrapperNode [2020-09-25 11:05:35,661 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:05:35,662 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:05:35,662 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:05:35,663 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:05:35,677 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:05:35" (1/1) ... [2020-09-25 11:05:35,678 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:05:35" (1/1) ... [2020-09-25 11:05:35,691 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:05:35" (1/1) ... [2020-09-25 11:05:35,692 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:05:35" (1/1) ... [2020-09-25 11:05:35,709 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:05:35" (1/1) ... [2020-09-25 11:05:35,720 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:05:35" (1/1) ... [2020-09-25 11:05:35,723 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:05:35" (1/1) ... [2020-09-25 11:05:35,727 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:05:35,728 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:05:35,728 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:05:35,728 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:05:35,729 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:05:35" (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 [2020-09-25 11:05:35,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:05:35,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:05:35,802 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-09-25 11:05:35,803 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-09-25 11:05:35,803 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:05:35,803 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:05:35,803 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-09-25 11:05:35,803 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-09-25 11:05:35,803 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 11:05:35,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-25 11:05:35,804 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 11:05:35,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 11:05:35,804 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-25 11:05:35,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 11:05:35,804 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-09-25 11:05:35,805 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:05:35,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:05:35,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-09-25 11:05:35,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:05:36,387 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:05:36,387 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-09-25 11:05:36,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:05:36 BoogieIcfgContainer [2020-09-25 11:05:36,394 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:05:36,396 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:05:36,396 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:05:36,399 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:05:36,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:05:35" (1/3) ... [2020-09-25 11:05:36,401 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b414b8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:05:36, skipping insertion in model container [2020-09-25 11:05:36,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:05:35" (2/3) ... [2020-09-25 11:05:36,401 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b414b8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:05:36, skipping insertion in model container [2020-09-25 11:05:36,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:05:36" (3/3) ... [2020-09-25 11:05:36,404 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1130a.c [2020-09-25 11:05:36,415 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:05:36,426 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:05:36,447 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:05:36,477 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:05:36,477 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:05:36,477 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:05:36,477 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:05:36,477 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:05:36,478 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:05:36,478 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:05:36,478 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:05:36,504 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states. [2020-09-25 11:05:36,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-25 11:05:36,513 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:05:36,514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:05:36,515 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:05:36,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:05:36,522 INFO L82 PathProgramCache]: Analyzing trace with hash 1988505082, now seen corresponding path program 1 times [2020-09-25 11:05:36,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:05:36,534 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [957552816] [2020-09-25 11:05:36,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:05:36,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:05:36,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:05:36,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:05:36,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:05:36,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-25 11:05:36,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:05:36,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 260 [2020-09-25 11:05:36,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:05:36,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:05:36,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:05:36,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-09-25 11:05:36,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:05:36,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 11:05:37,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:05:37,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:05:37,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:05:37,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:05:37,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 11:05:37,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:05:37,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 11:05:37,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:05:37,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:05:37,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:05:37,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:05:37,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:05:37,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:05:37,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 11:05:37,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:05:37,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:05:37,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:05:37,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:05:37,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:05:37,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:05:37,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 11:05:37,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:05:37,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:05:37,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:05:37,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 11:05:37,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:05:37,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:05:37,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:05:37,176 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [957552816] [2020-09-25 11:05:37,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:05:37,179 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 11:05:37,180 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210735403] [2020-09-25 11:05:37,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 11:05:37,187 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:05:37,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 11:05:37,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 11:05:37,209 INFO L87 Difference]: Start difference. First operand 166 states. Second operand 4 states. [2020-09-25 11:05:37,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:05:37,742 INFO L93 Difference]: Finished difference Result 308 states and 372 transitions. [2020-09-25 11:05:37,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 11:05:37,744 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2020-09-25 11:05:37,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:05:37,759 INFO L225 Difference]: With dead ends: 308 [2020-09-25 11:05:37,760 INFO L226 Difference]: Without dead ends: 158 [2020-09-25 11:05:37,764 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 [2020-09-25 11:05:37,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-09-25 11:05:37,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2020-09-25 11:05:37,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-09-25 11:05:37,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 174 transitions. [2020-09-25 11:05:37,823 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 174 transitions. Word has length 43 [2020-09-25 11:05:37,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:05:37,823 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 174 transitions. [2020-09-25 11:05:37,824 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 11:05:37,824 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 174 transitions. [2020-09-25 11:05:37,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-25 11:05:37,826 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:05:37,827 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:05:37,827 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:05:37,827 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:05:37,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:05:37,828 INFO L82 PathProgramCache]: Analyzing trace with hash -1298136515, now seen corresponding path program 1 times [2020-09-25 11:05:37,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:05:37,829 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [244547390] [2020-09-25 11:05:37,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:05:37,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 11:05:37,887 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 11:05:37,887 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 11:05:37,894 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:05:37,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 11:05:37 BoogieIcfgContainer [2020-09-25 11:05:37,918 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 11:05:37,922 INFO L168 Benchmark]: Toolchain (without parser) took 2810.83 ms. Allocated memory was 141.6 MB in the beginning and 235.4 MB in the end (delta: 93.8 MB). Free memory was 102.8 MB in the beginning and 156.6 MB in the end (delta: -53.8 MB). Peak memory consumption was 40.1 MB. Max. memory is 7.1 GB. [2020-09-25 11:05:37,923 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 141.6 MB. Free memory was 121.8 MB in the beginning and 121.4 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-09-25 11:05:37,924 INFO L168 Benchmark]: CACSL2BoogieTranslator took 543.89 ms. Allocated memory was 141.6 MB in the beginning and 203.4 MB in the end (delta: 61.9 MB). Free memory was 102.4 MB in the beginning and 179.9 MB in the end (delta: -77.5 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. [2020-09-25 11:05:37,925 INFO L168 Benchmark]: Boogie Preprocessor took 64.94 ms. Allocated memory is still 203.4 MB. Free memory was 179.9 MB in the beginning and 177.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-09-25 11:05:37,926 INFO L168 Benchmark]: RCFGBuilder took 666.78 ms. Allocated memory is still 203.4 MB. Free memory was 177.2 MB in the beginning and 140.4 MB in the end (delta: 36.8 MB). Peak memory consumption was 36.8 MB. Max. memory is 7.1 GB. [2020-09-25 11:05:37,927 INFO L168 Benchmark]: TraceAbstraction took 1522.15 ms. Allocated memory was 203.4 MB in the beginning and 235.4 MB in the end (delta: 32.0 MB). Free memory was 140.4 MB in the beginning and 156.6 MB in the end (delta: -16.2 MB). Peak memory consumption was 15.8 MB. Max. memory is 7.1 GB. [2020-09-25 11:05:37,931 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 141.6 MB. Free memory was 121.8 MB in the beginning and 121.4 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 543.89 ms. Allocated memory was 141.6 MB in the beginning and 203.4 MB in the end (delta: 61.9 MB). Free memory was 102.4 MB in the beginning and 179.9 MB in the end (delta: -77.5 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 64.94 ms. Allocated memory is still 203.4 MB. Free memory was 179.9 MB in the beginning and 177.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 666.78 ms. Allocated memory is still 203.4 MB. Free memory was 177.2 MB in the beginning and 140.4 MB in the end (delta: 36.8 MB). Peak memory consumption was 36.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1522.15 ms. Allocated memory was 203.4 MB in the beginning and 235.4 MB in the end (delta: 32.0 MB). Free memory was 140.4 MB in the beginning and 156.6 MB in the end (delta: -16.2 MB). Peak memory consumption was 15.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 135]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 134, overapproximation of someUnaryDOUBLEoperation at line 14, overapproximation of bitwiseAnd at line 32, overapproximation of bitwiseXor at line 31, overapproximation of someBinaryArithmeticFLOAToperation at line 35. Possible FailurePath: [L12-L15] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L126] float x = 0.0f; [L127] float y = __VERIFIER_nondet_float(); [L129] COND TRUE (y < 0.0f || y > 0.0f) [L131] 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); [L131] RET, EXPR fmod_float(x, y) [L131] float res = fmod_float(x, y); [L134] EXPR res == 0.0f && __signbit_float(res) == 0 [L134] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L135] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 166 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 179 SDtfs, 39 SDslu, 129 SDs, 0 SdLazy, 195 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s 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=166occurred 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, 104 NumberOfCodeBlocks, 104 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 42 ConstructedInterpolants, 0 QuantifiedInterpolants, 3150 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...