/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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_0730a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 09:08:26,389 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 09:08:26,392 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 09:08:26,455 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 09:08:26,455 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 09:08:26,463 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 09:08:26,465 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 09:08:26,469 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 09:08:26,472 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 09:08:26,479 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 09:08:26,480 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 09:08:26,481 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 09:08:26,481 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 09:08:26,482 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 09:08:26,484 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 09:08:26,485 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 09:08:26,486 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 09:08:26,486 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 09:08:26,488 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 09:08:26,490 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 09:08:26,492 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 09:08:26,493 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 09:08:26,495 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 09:08:26,495 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 09:08:26,498 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 09:08:26,499 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 09:08:26,499 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 09:08:26,500 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 09:08:26,500 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 09:08:26,501 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 09:08:26,502 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 09:08:26,503 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 09:08:26,503 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 09:08:26,504 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 09:08:26,505 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 09:08:26,506 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 09:08:26,506 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 09:08:26,507 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 09:08:26,507 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 09:08:26,508 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 09:08:26,509 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 09:08:26,510 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 [2020-10-29 09:08:26,548 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 09:08:26,548 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 09:08:26,550 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 09:08:26,550 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 09:08:26,550 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 09:08:26,551 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 09:08:26,551 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 09:08:26,551 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 09:08:26,551 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 09:08:26,551 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 09:08:26,552 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 09:08:26,552 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 09:08:26,552 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 09:08:26,552 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 09:08:26,552 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 09:08:26,552 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 09:08:26,553 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 09:08:26,553 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 09:08:26,553 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 09:08:26,553 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 09:08:26,554 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 09:08:26,554 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:08:26,554 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 09:08:26,554 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 09:08:26,554 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 09:08:26,555 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 09:08:26,555 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 09:08:26,555 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 09:08:26,555 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 09:08:26,555 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 09:08:26,906 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 09:08:26,946 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 09:08:26,950 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 09:08:26,951 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 09:08:26,952 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 09:08:26,956 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0730a.c [2020-10-29 09:08:27,048 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8a68d560d/789508f17ce44dab805863af533e7f4b/FLAG142b27a51 [2020-10-29 09:08:27,764 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 09:08:27,765 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_0730a.c [2020-10-29 09:08:27,775 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8a68d560d/789508f17ce44dab805863af533e7f4b/FLAG142b27a51 [2020-10-29 09:08:28,105 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8a68d560d/789508f17ce44dab805863af533e7f4b [2020-10-29 09:08:28,111 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 09:08:28,120 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 09:08:28,124 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 09:08:28,124 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 09:08:28,128 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 09:08:28,129 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:08:28" (1/1) ... [2020-10-29 09:08:28,133 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@797a7885 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:28, skipping insertion in model container [2020-10-29 09:08:28,133 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:08:28" (1/1) ... [2020-10-29 09:08:28,142 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 09:08:28,171 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 09:08:28,368 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:08:28,378 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 09:08:28,413 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:08:28,441 INFO L208 MainTranslator]: Completed translation [2020-10-29 09:08:28,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:28 WrapperNode [2020-10-29 09:08:28,442 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 09:08:28,443 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 09:08:28,443 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 09:08:28,444 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 09:08:28,457 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:28" (1/1) ... [2020-10-29 09:08:28,457 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:28" (1/1) ... [2020-10-29 09:08:28,468 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:28" (1/1) ... [2020-10-29 09:08:28,468 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:28" (1/1) ... [2020-10-29 09:08:28,480 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:28" (1/1) ... [2020-10-29 09:08:28,487 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:28" (1/1) ... [2020-10-29 09:08:28,490 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:28" (1/1) ... [2020-10-29 09:08:28,493 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 09:08:28,494 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 09:08:28,494 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 09:08:28,494 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 09:08:28,495 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:28" (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 [2020-10-29 09:08:28,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 09:08:28,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 09:08:28,579 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 09:08:28,579 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf [2020-10-29 09:08:28,579 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_float [2020-10-29 09:08:28,580 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 09:08:28,580 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 09:08:28,580 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 09:08:28,580 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 09:08:28,581 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 09:08:28,581 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-29 09:08:28,581 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf [2020-10-29 09:08:28,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-29 09:08:28,581 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 09:08:28,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 09:08:28,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 09:08:28,582 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-29 09:08:28,582 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_float [2020-10-29 09:08:28,583 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 09:08:28,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 09:08:28,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 09:08:28,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 09:08:29,247 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 09:08:29,248 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-29 09:08:29,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:08:29 BoogieIcfgContainer [2020-10-29 09:08:29,251 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 09:08:29,253 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 09:08:29,253 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 09:08:29,257 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 09:08:29,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 09:08:28" (1/3) ... [2020-10-29 09:08:29,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cf2309f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:08:29, skipping insertion in model container [2020-10-29 09:08:29,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:28" (2/3) ... [2020-10-29 09:08:29,259 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cf2309f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:08:29, skipping insertion in model container [2020-10-29 09:08:29,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:08:29" (3/3) ... [2020-10-29 09:08:29,261 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0730a.c [2020-10-29 09:08:29,274 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 09:08:29,280 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 09:08:29,294 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 09:08:29,337 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 09:08:29,338 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 09:08:29,338 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 09:08:29,338 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 09:08:29,338 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 09:08:29,338 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 09:08:29,338 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 09:08:29,339 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 09:08:29,363 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states. [2020-10-29 09:08:29,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-29 09:08:29,371 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:08:29,372 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:08:29,373 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:08:29,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:08:29,382 INFO L82 PathProgramCache]: Analyzing trace with hash -1258470498, now seen corresponding path program 1 times [2020-10-29 09:08:29,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:08:29,392 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [813127770] [2020-10-29 09:08:29,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:08:29,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:08:29,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:08:29,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:08:29,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:08:29,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-29 09:08:29,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:08:29,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-10-29 09:08:29,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:08:29,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:08:29,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:08:29,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 09:08:29,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:08:29,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 09:08:29,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:08:29,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:08:29,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:08:29,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:08:29,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:08:29,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:08:29,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 09:08:29,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:08:29,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:08:29,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:08:29,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:08:29,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:08:29,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:08:29,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:08:29,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:08:29,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:08:29,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:08:29,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 09:08:29,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:08:29,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 09:08:29,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:08:29,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:08:29,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:08:29,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-29 09:08:29,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:08:29,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 09:08:29,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-29 09:08:29,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:08:29,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:08:29,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:08:30,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:08:30,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:08:30,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:08:30,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 09:08:30,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:08:30,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:08:30,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:08:30,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 09:08:30,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:08:30,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:08:30,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:08:30,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [813127770] [2020-10-29 09:08:30,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:08:30,036 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 09:08:30,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903418682] [2020-10-29 09:08:30,042 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 09:08:30,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:08:30,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 09:08:30,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 09:08:30,062 INFO L87 Difference]: Start difference. First operand 53 states. Second operand 4 states. [2020-10-29 09:08:30,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:08:30,399 INFO L93 Difference]: Finished difference Result 95 states and 135 transitions. [2020-10-29 09:08:30,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-29 09:08:30,401 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-10-29 09:08:30,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:08:30,410 INFO L225 Difference]: With dead ends: 95 [2020-10-29 09:08:30,411 INFO L226 Difference]: Without dead ends: 46 [2020-10-29 09:08:30,414 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 09:08:30,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-29 09:08:30,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-10-29 09:08:30,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-29 09:08:30,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 56 transitions. [2020-10-29 09:08:30,462 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 56 transitions. Word has length 24 [2020-10-29 09:08:30,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:08:30,463 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 56 transitions. [2020-10-29 09:08:30,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 09:08:30,463 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 56 transitions. [2020-10-29 09:08:30,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-29 09:08:30,465 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:08:30,465 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:08:30,465 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 09:08:30,465 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:08:30,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:08:30,466 INFO L82 PathProgramCache]: Analyzing trace with hash -773151450, now seen corresponding path program 1 times [2020-10-29 09:08:30,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:08:30,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [277240089] [2020-10-29 09:08:30,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:08:30,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-29 09:08:30,508 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-29 09:08:30,508 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-29 09:08:30,513 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 09:08:30,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 09:08:30 BoogieIcfgContainer [2020-10-29 09:08:30,530 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 09:08:30,532 INFO L168 Benchmark]: Toolchain (without parser) took 2417.15 ms. Allocated memory is still 154.1 MB. Free memory was 129.4 MB in the beginning and 107.2 MB in the end (delta: 22.1 MB). Peak memory consumption was 23.7 MB. Max. memory is 8.0 GB. [2020-10-29 09:08:30,533 INFO L168 Benchmark]: CDTParser took 0.69 ms. Allocated memory is still 125.8 MB. Free memory was 101.0 MB in the beginning and 101.0 MB in the end (delta: 73.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 09:08:30,534 INFO L168 Benchmark]: CACSL2BoogieTranslator took 318.45 ms. Allocated memory is still 154.1 MB. Free memory was 128.7 MB in the beginning and 117.4 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-10-29 09:08:30,535 INFO L168 Benchmark]: Boogie Preprocessor took 49.85 ms. Allocated memory is still 154.1 MB. Free memory was 117.4 MB in the beginning and 115.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-29 09:08:30,536 INFO L168 Benchmark]: RCFGBuilder took 756.90 ms. Allocated memory is still 154.1 MB. Free memory was 115.4 MB in the beginning and 129.7 MB in the end (delta: -14.3 MB). Peak memory consumption was 17.0 MB. Max. memory is 8.0 GB. [2020-10-29 09:08:30,537 INFO L168 Benchmark]: TraceAbstraction took 1276.73 ms. Allocated memory is still 154.1 MB. Free memory was 129.3 MB in the beginning and 107.2 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.5 MB. Max. memory is 8.0 GB. [2020-10-29 09:08:30,540 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.69 ms. Allocated memory is still 125.8 MB. Free memory was 101.0 MB in the beginning and 101.0 MB in the end (delta: 73.2 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 318.45 ms. Allocated memory is still 154.1 MB. Free memory was 128.7 MB in the beginning and 117.4 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 49.85 ms. Allocated memory is still 154.1 MB. Free memory was 117.4 MB in the beginning and 115.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 756.90 ms. Allocated memory is still 154.1 MB. Free memory was 115.4 MB in the beginning and 129.7 MB in the end (delta: -14.3 MB). Peak memory consumption was 17.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1276.73 ms. Allocated memory is still 154.1 MB. Free memory was 129.3 MB in the beginning and 107.2 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.5 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 someBinaryArithmeticFLOAToperation at line 29, overapproximation of bitwiseAnd at line 91. Possible FailurePath: [L14] static const float one_sqrt = 1.0, tiny_sqrt = 1.0e-30; [L103] float x = 1.0f / 0.0f; [L105] CALL, EXPR __ieee754_sqrtf(x) [L17] float z; [L18] __uint32_t r, hx; [L19] __int32_t ix, s, q, m, t, i; [L22] ieee_float_shape_type gf_u; [L23] gf_u.value = (x) [L24] EXPR gf_u.word [L24] (ix) = gf_u.word [L26] hx = ix & 0x7fffffff [L28] COND TRUE !((hx) < 0x7f800000L) [L29] return x * x + x; [L105] RET, EXPR __ieee754_sqrtf(x) [L105] float res = __ieee754_sqrtf(x); [L108] CALL, EXPR isinf_float(res) [L85] __int32_t ix; [L87] ieee_float_shape_type gf_u; [L88] gf_u.value = (x) [L89] EXPR gf_u.word [L89] (ix) = gf_u.word [L91] ix &= 0x7fffffff [L92] return ((ix) == 0x7f800000L); [L108] RET, EXPR isinf_float(res) [L108] COND TRUE !isinf_float(res) [L109] CALL reach_error() [L3] __assert_fail("0", "float_req_bl_0730a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 53 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 57 SDtfs, 8 SDslu, 50 SDs, 0 SdLazy, 55 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=53occurred 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, 50 NumberOfCodeBlocks, 50 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 1909 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...