/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=SHALLOWEST --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 [2020-10-27 01:04:04,483 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 01:04:04,486 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 01:04:04,521 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 01:04:04,522 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 01:04:04,523 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 01:04:04,525 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 01:04:04,527 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 01:04:04,529 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 01:04:04,531 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 01:04:04,532 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 01:04:04,533 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 01:04:04,534 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 01:04:04,535 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 01:04:04,536 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 01:04:04,538 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 01:04:04,539 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 01:04:04,553 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 01:04:04,557 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 01:04:04,563 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 01:04:04,566 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 01:04:04,571 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 01:04:04,573 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 01:04:04,576 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 01:04:04,585 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 01:04:04,586 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 01:04:04,591 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 01:04:04,592 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 01:04:04,593 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 01:04:04,597 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 01:04:04,597 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 01:04:04,598 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 01:04:04,599 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 01:04:04,601 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 01:04:04,602 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 01:04:04,603 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 01:04:04,604 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 01:04:04,605 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 01:04:04,605 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 01:04:04,606 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 01:04:04,607 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 01:04:04,608 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 [2020-10-27 01:04:04,662 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 01:04:04,662 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 01:04:04,664 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 01:04:04,664 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 01:04:04,665 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 01:04:04,665 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 01:04:04,665 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 01:04:04,665 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 01:04:04,666 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 01:04:04,666 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 01:04:04,666 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 01:04:04,666 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 01:04:04,667 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 01:04:04,667 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 01:04:04,667 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 01:04:04,667 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 01:04:04,667 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 01:04:04,668 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 01:04:04,668 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 01:04:04,668 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 01:04:04,668 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 01:04:04,669 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:04:04,669 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 01:04:04,669 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 01:04:04,669 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 01:04:04,670 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 01:04:04,670 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 01:04:04,670 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 01:04:04,670 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 01:04:04,670 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 01:04:05,081 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 01:04:05,115 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 01:04:05,118 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 01:04:05,120 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 01:04:05,121 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 01:04:05,122 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c [2020-10-27 01:04:05,207 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/530a541c5/e93e9e5e7cc24723a1617dc47dfa20cd/FLAG3bc00cdad [2020-10-27 01:04:05,959 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 01:04:05,960 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c [2020-10-27 01:04:05,968 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/530a541c5/e93e9e5e7cc24723a1617dc47dfa20cd/FLAG3bc00cdad [2020-10-27 01:04:06,322 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/530a541c5/e93e9e5e7cc24723a1617dc47dfa20cd [2020-10-27 01:04:06,325 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 01:04:06,332 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 01:04:06,334 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 01:04:06,335 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 01:04:06,339 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 01:04:06,340 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:04:06" (1/1) ... [2020-10-27 01:04:06,344 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e531219 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:06, skipping insertion in model container [2020-10-27 01:04:06,344 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:04:06" (1/1) ... [2020-10-27 01:04:06,355 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 01:04:06,394 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 01:04:06,646 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:04:06,654 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 01:04:06,692 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:04:06,710 INFO L208 MainTranslator]: Completed translation [2020-10-27 01:04:06,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:06 WrapperNode [2020-10-27 01:04:06,711 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 01:04:06,712 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 01:04:06,712 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 01:04:06,712 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 01:04:06,725 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:06" (1/1) ... [2020-10-27 01:04:06,726 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:06" (1/1) ... [2020-10-27 01:04:06,737 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:06" (1/1) ... [2020-10-27 01:04:06,737 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:06" (1/1) ... [2020-10-27 01:04:06,752 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:06" (1/1) ... [2020-10-27 01:04:06,761 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:06" (1/1) ... [2020-10-27 01:04:06,764 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:06" (1/1) ... [2020-10-27 01:04:06,769 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 01:04:06,770 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 01:04:06,770 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 01:04:06,770 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 01:04:06,771 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:06" (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 [2020-10-27 01:04:06,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 01:04:06,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 01:04:06,851 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 01:04:06,851 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-10-27 01:04:06,851 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-10-27 01:04:06,851 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 01:04:06,852 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 01:04:06,852 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 01:04:06,852 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 01:04:06,852 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 01:04:06,852 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-27 01:04:06,852 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-10-27 01:04:06,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-27 01:04:06,853 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 01:04:06,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 01:04:06,853 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-27 01:04:06,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 01:04:06,853 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-10-27 01:04:06,854 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 01:04:06,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 01:04:06,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 01:04:06,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-27 01:04:06,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 01:04:07,602 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 01:04:07,602 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-10-27 01:04:07,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:04:07 BoogieIcfgContainer [2020-10-27 01:04:07,604 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 01:04:07,606 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 01:04:07,606 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 01:04:07,610 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 01:04:07,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 01:04:06" (1/3) ... [2020-10-27 01:04:07,612 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70045b70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:04:07, skipping insertion in model container [2020-10-27 01:04:07,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:06" (2/3) ... [2020-10-27 01:04:07,612 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70045b70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:04:07, skipping insertion in model container [2020-10-27 01:04:07,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:04:07" (3/3) ... [2020-10-27 01:04:07,614 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1130a.c [2020-10-27 01:04:07,628 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 01:04:07,634 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 01:04:07,650 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 01:04:07,679 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 01:04:07,679 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 01:04:07,679 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 01:04:07,679 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 01:04:07,680 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 01:04:07,680 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 01:04:07,680 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 01:04:07,680 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 01:04:07,700 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2020-10-27 01:04:07,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-27 01:04:07,707 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:04:07,708 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] [2020-10-27 01:04:07,709 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:04:07,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:04:07,717 INFO L82 PathProgramCache]: Analyzing trace with hash -575871545, now seen corresponding path program 1 times [2020-10-27 01:04:07,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:04:07,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [497859590] [2020-10-27 01:04:07,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:04:07,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:04:07,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:07,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:08,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:04:08,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 01:04:08,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:04:08,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 260 [2020-10-27 01:04:08,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:04:08,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:04:08,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 01:04:08,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:04:08,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 01:04:08,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:04:08,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:04:08,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:08,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:04:08,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:04:08,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:04:08,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 01:04:08,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:04:08,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:04:08,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:04:08,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:04:08,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:04:08,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 01:04:08,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:04:08,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:08,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:08,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:04:08,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 01:04:08,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:04:08,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 01:04:08,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:04:08,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:04:08,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 01:04:08,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:04:08,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 01:04:08,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:04:08,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [497859590] [2020-10-27 01:04:08,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:04:08,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 01:04:08,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089159711] [2020-10-27 01:04:08,336 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 01:04:08,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:04:08,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 01:04:08,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 01:04:08,356 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 4 states. [2020-10-27 01:04:08,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:04:08,737 INFO L93 Difference]: Finished difference Result 121 states and 186 transitions. [2020-10-27 01:04:08,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 01:04:08,739 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-10-27 01:04:08,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:04:08,750 INFO L225 Difference]: With dead ends: 121 [2020-10-27 01:04:08,750 INFO L226 Difference]: Without dead ends: 57 [2020-10-27 01:04:08,754 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 [2020-10-27 01:04:08,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-27 01:04:08,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-10-27 01:04:08,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-27 01:04:08,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 73 transitions. [2020-10-27 01:04:08,821 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 73 transitions. Word has length 20 [2020-10-27 01:04:08,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:04:08,821 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 73 transitions. [2020-10-27 01:04:08,822 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 01:04:08,822 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 73 transitions. [2020-10-27 01:04:08,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-27 01:04:08,823 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:04:08,823 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] [2020-10-27 01:04:08,823 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 01:04:08,824 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:04:08,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:04:08,825 INFO L82 PathProgramCache]: Analyzing trace with hash -1727493878, now seen corresponding path program 1 times [2020-10-27 01:04:08,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:04:08,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [852058624] [2020-10-27 01:04:08,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:04:08,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 01:04:08,875 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 01:04:08,875 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 01:04:08,881 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 01:04:08,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 01:04:08 BoogieIcfgContainer [2020-10-27 01:04:08,899 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 01:04:08,902 INFO L168 Benchmark]: Toolchain (without parser) took 2573.59 ms. Allocated memory is still 156.2 MB. Free memory was 131.8 MB in the beginning and 128.9 MB in the end (delta: 3.0 MB). Peak memory consumption was 4.1 MB. Max. memory is 8.0 GB. [2020-10-27 01:04:08,903 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 156.2 MB. Free memory was 128.5 MB in the beginning and 128.4 MB in the end (delta: 138.4 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 01:04:08,906 INFO L168 Benchmark]: CACSL2BoogieTranslator took 376.69 ms. Allocated memory is still 156.2 MB. Free memory was 131.2 MB in the beginning and 119.4 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-10-27 01:04:08,907 INFO L168 Benchmark]: Boogie Preprocessor took 57.08 ms. Allocated memory is still 156.2 MB. Free memory was 119.4 MB in the beginning and 117.2 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-27 01:04:08,908 INFO L168 Benchmark]: RCFGBuilder took 834.71 ms. Allocated memory is still 156.2 MB. Free memory was 117.2 MB in the beginning and 120.6 MB in the end (delta: -3.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 8.0 GB. [2020-10-27 01:04:08,909 INFO L168 Benchmark]: TraceAbstraction took 1293.13 ms. Allocated memory is still 156.2 MB. Free memory was 120.1 MB in the beginning and 128.9 MB in the end (delta: -8.8 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 01:04:08,915 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 156.2 MB. Free memory was 128.5 MB in the beginning and 128.4 MB in the end (delta: 138.4 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 376.69 ms. Allocated memory is still 156.2 MB. Free memory was 131.2 MB in the beginning and 119.4 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 57.08 ms. Allocated memory is still 156.2 MB. Free memory was 119.4 MB in the beginning and 117.2 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 834.71 ms. Allocated memory is still 156.2 MB. Free memory was 117.2 MB in the beginning and 120.6 MB in the end (delta: -3.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1293.13 ms. Allocated memory is still 156.2 MB. Free memory was 120.1 MB in the beginning and 128.9 MB in the end (delta: -8.8 MB). There was no memory consumed. 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: 0.4s, 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, 0.0s SatisfiabilityAnalysisTime, 0.4s 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...