/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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 language data_model -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 14:28:41,434 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 14:28:41,437 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 14:28:41,474 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 14:28:41,475 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 14:28:41,476 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 14:28:41,478 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 14:28:41,481 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 14:28:41,484 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 14:28:41,485 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 14:28:41,486 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 14:28:41,488 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 14:28:41,489 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 14:28:41,490 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 14:28:41,492 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 14:28:41,493 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 14:28:41,494 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 14:28:41,496 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 14:28:41,498 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 14:28:41,501 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 14:28:41,504 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 14:28:41,506 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 14:28:41,508 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 14:28:41,511 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 14:28:41,522 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 14:28:41,522 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 14:28:41,523 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 14:28:41,527 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 14:28:41,528 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 14:28:41,530 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 14:28:41,532 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 14:28:41,534 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 14:28:41,535 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 14:28:41,537 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 14:28:41,539 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 14:28:41,551 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 14:28:41,552 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 14:28:41,552 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 14:28:41,553 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 14:28:41,555 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 14:28:41,556 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 14:28:41,557 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 [2020-10-28 14:28:41,612 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 14:28:41,612 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 14:28:41,614 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 14:28:41,615 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 14:28:41,617 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 14:28:41,617 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 14:28:41,617 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 14:28:41,617 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 14:28:41,618 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 14:28:41,618 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 14:28:41,618 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 14:28:41,619 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 14:28:41,619 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 14:28:41,620 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 14:28:41,620 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 14:28:41,620 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 14:28:41,620 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 14:28:41,621 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 14:28:41,621 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 14:28:41,621 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 14:28:41,621 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 14:28:41,621 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:28:41,622 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 14:28:41,622 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 14:28:41,623 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 14:28:41,623 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 14:28:41,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 14:28:41,623 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 14:28:41,623 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 14:28:41,623 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 14:28:42,129 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 14:28:42,172 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 14:28:42,175 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 14:28:42,177 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 14:28:42,178 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 14:28:42,181 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c [2020-10-28 14:28:42,285 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cfb61f36f/e6f947633ed74089855bb082ccd37877/FLAG2ddee4801 [2020-10-28 14:28:43,008 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 14:28:43,009 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c [2020-10-28 14:28:43,017 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cfb61f36f/e6f947633ed74089855bb082ccd37877/FLAG2ddee4801 [2020-10-28 14:28:43,364 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cfb61f36f/e6f947633ed74089855bb082ccd37877 [2020-10-28 14:28:43,369 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 14:28:43,377 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 14:28:43,381 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 14:28:43,381 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 14:28:43,385 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 14:28:43,386 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:28:43" (1/1) ... [2020-10-28 14:28:43,391 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@461d3cfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:43, skipping insertion in model container [2020-10-28 14:28:43,391 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:28:43" (1/1) ... [2020-10-28 14:28:43,400 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 14:28:43,438 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 14:28:43,645 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:28:43,654 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 14:28:43,693 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:28:43,713 INFO L208 MainTranslator]: Completed translation [2020-10-28 14:28:43,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:43 WrapperNode [2020-10-28 14:28:43,714 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 14:28:43,715 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 14:28:43,715 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 14:28:43,716 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 14:28:43,729 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:43" (1/1) ... [2020-10-28 14:28:43,729 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:43" (1/1) ... [2020-10-28 14:28:43,741 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:43" (1/1) ... [2020-10-28 14:28:43,741 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:43" (1/1) ... [2020-10-28 14:28:43,758 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:43" (1/1) ... [2020-10-28 14:28:43,767 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:43" (1/1) ... [2020-10-28 14:28:43,770 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:43" (1/1) ... [2020-10-28 14:28:43,774 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 14:28:43,776 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 14:28:43,776 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 14:28:43,776 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 14:28:43,777 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:43" (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 [2020-10-28 14:28:43,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 14:28:43,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 14:28:43,865 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 14:28:43,865 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-10-28 14:28:43,865 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-10-28 14:28:43,866 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 14:28:43,866 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 14:28:43,866 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 14:28:43,866 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 14:28:43,866 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 14:28:43,866 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-28 14:28:43,867 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-10-28 14:28:43,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-28 14:28:43,867 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 14:28:43,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 14:28:43,867 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-28 14:28:43,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 14:28:43,867 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-10-28 14:28:43,868 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 14:28:43,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 14:28:43,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 14:28:43,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-28 14:28:43,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 14:28:44,619 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 14:28:44,620 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-10-28 14:28:44,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:28:44 BoogieIcfgContainer [2020-10-28 14:28:44,622 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 14:28:44,628 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 14:28:44,628 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 14:28:44,633 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 14:28:44,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 02:28:43" (1/3) ... [2020-10-28 14:28:44,635 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60fa14a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:28:44, skipping insertion in model container [2020-10-28 14:28:44,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:43" (2/3) ... [2020-10-28 14:28:44,636 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60fa14a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:28:44, skipping insertion in model container [2020-10-28 14:28:44,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:28:44" (3/3) ... [2020-10-28 14:28:44,639 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1130a.c [2020-10-28 14:28:44,654 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 14:28:44,661 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 14:28:44,679 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 14:28:44,721 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 14:28:44,721 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 14:28:44,721 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 14:28:44,721 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 14:28:44,721 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 14:28:44,722 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 14:28:44,722 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 14:28:44,722 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 14:28:44,748 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2020-10-28 14:28:44,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-28 14:28:44,756 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:28:44,757 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] [2020-10-28 14:28:44,758 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:28:44,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:28:44,771 INFO L82 PathProgramCache]: Analyzing trace with hash -575871545, now seen corresponding path program 1 times [2020-10-28 14:28:44,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:28:44,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [132740782] [2020-10-28 14:28:44,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:28:44,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:28:45,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:28:45,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:28:45,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:28:45,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 14:28:45,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:28:45,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 336 [2020-10-28 14:28:45,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:28:45,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:28:45,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:28:45,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-28 14:28:45,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:28:45,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 14:28:45,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:28:45,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:28:45,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:28:45,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:28:45,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:28:45,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:28:45,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 14:28:45,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:28:45,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:28:45,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:28:45,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:28:45,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:28:45,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:28:45,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-28 14:28:45,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:28:45,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:28:45,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:28:45,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:28:45,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:28:45,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:28:45,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 14:28:45,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:28:45,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:28:45,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:28:45,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-28 14:28:45,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:28:45,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:28:45,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:28:45,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [132740782] [2020-10-28 14:28:45,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:28:45,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 14:28:45,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110971267] [2020-10-28 14:28:45,508 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 14:28:45,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:28:45,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 14:28:45,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:28:45,527 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 4 states. [2020-10-28 14:28:45,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:28:45,842 INFO L93 Difference]: Finished difference Result 121 states and 186 transitions. [2020-10-28 14:28:45,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 14:28:45,844 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-10-28 14:28:45,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:28:45,856 INFO L225 Difference]: With dead ends: 121 [2020-10-28 14:28:45,856 INFO L226 Difference]: Without dead ends: 57 [2020-10-28 14:28:45,860 INFO L677 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 [2020-10-28 14:28:45,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-28 14:28:45,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-10-28 14:28:45,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-28 14:28:45,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 73 transitions. [2020-10-28 14:28:45,912 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 73 transitions. Word has length 20 [2020-10-28 14:28:45,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:28:45,913 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 73 transitions. [2020-10-28 14:28:45,913 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 14:28:45,913 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 73 transitions. [2020-10-28 14:28:45,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-28 14:28:45,915 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:28:45,915 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] [2020-10-28 14:28:45,915 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 14:28:45,916 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:28:45,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:28:45,917 INFO L82 PathProgramCache]: Analyzing trace with hash -1727493878, now seen corresponding path program 1 times [2020-10-28 14:28:45,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:28:45,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [425254302] [2020-10-28 14:28:45,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:28:45,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-28 14:28:45,992 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-28 14:28:45,993 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-28 14:28:45,998 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 14:28:46,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 02:28:46 BoogieIcfgContainer [2020-10-28 14:28:46,016 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 14:28:46,019 INFO L168 Benchmark]: Toolchain (without parser) took 2646.35 ms. Allocated memory was 151.0 MB in the beginning and 189.8 MB in the end (delta: 38.8 MB). Free memory was 126.0 MB in the beginning and 167.3 MB in the end (delta: -41.3 MB). Peak memory consumption was 79.9 MB. Max. memory is 8.0 GB. [2020-10-28 14:28:46,020 INFO L168 Benchmark]: CDTParser took 1.59 ms. Allocated memory is still 151.0 MB. Free memory is still 125.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 14:28:46,020 INFO L168 Benchmark]: CACSL2BoogieTranslator took 333.92 ms. Allocated memory is still 151.0 MB. Free memory was 125.5 MB in the beginning and 113.7 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-10-28 14:28:46,021 INFO L168 Benchmark]: Boogie Preprocessor took 59.36 ms. Allocated memory is still 151.0 MB. Free memory was 113.7 MB in the beginning and 111.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-28 14:28:46,022 INFO L168 Benchmark]: RCFGBuilder took 846.74 ms. Allocated memory is still 151.0 MB. Free memory was 111.5 MB in the beginning and 122.9 MB in the end (delta: -11.3 MB). Peak memory consumption was 21.2 MB. Max. memory is 8.0 GB. [2020-10-28 14:28:46,023 INFO L168 Benchmark]: TraceAbstraction took 1387.81 ms. Allocated memory was 151.0 MB in the beginning and 189.8 MB in the end (delta: 38.8 MB). Free memory was 122.9 MB in the beginning and 167.3 MB in the end (delta: -44.4 MB). Peak memory consumption was 76.5 MB. Max. memory is 8.0 GB. [2020-10-28 14:28:46,027 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.59 ms. Allocated memory is still 151.0 MB. Free memory is still 125.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 333.92 ms. Allocated memory is still 151.0 MB. Free memory was 125.5 MB in the beginning and 113.7 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 59.36 ms. Allocated memory is still 151.0 MB. Free memory was 113.7 MB in the beginning and 111.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 846.74 ms. Allocated memory is still 151.0 MB. Free memory was 111.5 MB in the beginning and 122.9 MB in the end (delta: -11.3 MB). Peak memory consumption was 21.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1387.81 ms. Allocated memory was 151.0 MB in the beginning and 189.8 MB in the end (delta: 38.8 MB). Free memory was 122.9 MB in the beginning and 167.3 MB in the end (delta: -44.4 MB). Peak memory consumption was 76.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 136, overapproximation of someUnaryDOUBLEoperation at line 16, overapproximation of bitwiseAnd at line 32, overapproximation of bitwiseXor at line 33, overapproximation of someBinaryArithmeticFLOAToperation at line 37. Possible FailurePath: [L14-L17] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L128] float x = 0.0f; [L129] float y = __VERIFIER_nondet_float(); [L131] COND TRUE (y < 0.0f || y > 0.0f) [L133] CALL, EXPR fmod_float(x, y) [L20] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L23] ieee_float_shape_type gf_u; [L24] gf_u.value = (x) [L25] EXPR gf_u.word [L25] (hx) = gf_u.word [L28] ieee_float_shape_type gf_u; [L29] gf_u.value = (y) [L30] EXPR gf_u.word [L30] (hy) = gf_u.word [L32] sx = hx & 0x80000000 [L33] hx ^= sx [L34] hy &= 0x7fffffff [L36] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) [L37] return (x * y) / (x * y); [L133] RET, EXPR fmod_float(x, y) [L133] float res = fmod_float(x, y); [L136] EXPR res == 0.0f && __signbit_float(res) == 0 [L136] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L137] CALL reach_error() [L3] __assert_fail("0", "float_req_bl_1130a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 65 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 76 SDtfs, 16 SDslu, 60 SDs, 0 SdLazy, 79 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s 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=65occurred 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, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 1330 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...