/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_1012a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 14:28:27,445 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 14:28:27,448 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 14:28:27,485 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 14:28:27,486 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 14:28:27,488 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 14:28:27,489 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 14:28:27,492 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 14:28:27,495 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 14:28:27,496 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 14:28:27,498 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 14:28:27,499 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 14:28:27,500 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 14:28:27,501 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 14:28:27,503 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 14:28:27,505 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 14:28:27,506 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 14:28:27,507 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 14:28:27,532 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 14:28:27,538 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 14:28:27,540 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 14:28:27,542 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 14:28:27,544 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 14:28:27,546 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 14:28:27,549 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 14:28:27,550 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 14:28:27,550 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 14:28:27,551 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 14:28:27,552 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 14:28:27,553 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 14:28:27,554 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 14:28:27,555 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 14:28:27,556 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 14:28:27,557 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 14:28:27,559 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 14:28:27,559 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 14:28:27,560 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 14:28:27,560 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 14:28:27,561 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 14:28:27,562 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 14:28:27,563 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 14:28:27,564 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 14:28:27,591 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 14:28:27,591 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 14:28:27,593 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 14:28:27,593 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 14:28:27,594 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 14:28:27,594 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 14:28:27,594 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 14:28:27,594 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 14:28:27,595 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 14:28:27,595 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 14:28:27,595 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 14:28:27,595 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 14:28:27,596 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 14:28:27,596 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 14:28:27,596 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 14:28:27,596 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 14:28:27,597 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 14:28:27,597 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 14:28:27,597 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 14:28:27,598 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 14:28:27,598 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 14:28:27,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:28:27,599 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 14:28:27,599 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 14:28:27,599 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 14:28:27,599 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 14:28:27,600 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 14:28:27,600 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 14:28:27,600 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 14:28:27,601 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 14:28:27,986 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 14:28:28,035 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 14:28:28,040 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 14:28:28,041 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 14:28:28,042 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 14:28:28,044 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1012a.c [2020-10-28 14:28:28,134 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a54a93a8f/70a79d9e5632493e85036f3192295dde/FLAG9126e176f [2020-10-28 14:28:28,833 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 14:28:28,833 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1012a.c [2020-10-28 14:28:28,842 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a54a93a8f/70a79d9e5632493e85036f3192295dde/FLAG9126e176f [2020-10-28 14:28:29,187 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a54a93a8f/70a79d9e5632493e85036f3192295dde [2020-10-28 14:28:29,192 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 14:28:29,200 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 14:28:29,204 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 14:28:29,204 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 14:28:29,208 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 14:28:29,209 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:28:29" (1/1) ... [2020-10-28 14:28:29,213 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53b79c12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:29, skipping insertion in model container [2020-10-28 14:28:29,213 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:28:29" (1/1) ... [2020-10-28 14:28:29,222 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 14:28:29,241 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 14:28:29,410 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:28:29,419 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 14:28:29,441 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:28:29,459 INFO L208 MainTranslator]: Completed translation [2020-10-28 14:28:29,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:29 WrapperNode [2020-10-28 14:28:29,460 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 14:28:29,462 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 14:28:29,462 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 14:28:29,462 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 14:28:29,475 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:29" (1/1) ... [2020-10-28 14:28:29,475 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:29" (1/1) ... [2020-10-28 14:28:29,483 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:29" (1/1) ... [2020-10-28 14:28:29,484 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:29" (1/1) ... [2020-10-28 14:28:29,493 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:29" (1/1) ... [2020-10-28 14:28:29,498 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:29" (1/1) ... [2020-10-28 14:28:29,500 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:29" (1/1) ... [2020-10-28 14:28:29,503 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 14:28:29,504 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 14:28:29,504 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 14:28:29,504 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 14:28:29,505 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:29" (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 14:28:29,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 14:28:29,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 14:28:29,570 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 14:28:29,570 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2020-10-28 14:28:29,571 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_float [2020-10-28 14:28:29,571 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 14:28:29,571 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 14:28:29,571 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 14:28:29,571 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 14:28:29,572 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 14:28:29,572 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2020-10-28 14:28:29,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-28 14:28:29,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 14:28:29,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 14:28:29,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 14:28:29,573 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-28 14:28:29,573 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_float [2020-10-28 14:28:29,573 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 14:28:29,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 14:28:29,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 14:28:29,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 14:28:30,239 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 14:28:30,239 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-28 14:28:30,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:28:30 BoogieIcfgContainer [2020-10-28 14:28:30,241 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 14:28:30,246 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 14:28:30,246 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 14:28:30,251 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 14:28:30,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 02:28:29" (1/3) ... [2020-10-28 14:28:30,252 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cd8d026 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:28:30, skipping insertion in model container [2020-10-28 14:28:30,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:29" (2/3) ... [2020-10-28 14:28:30,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cd8d026 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:28:30, skipping insertion in model container [2020-10-28 14:28:30,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:28:30" (3/3) ... [2020-10-28 14:28:30,256 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1012a.c [2020-10-28 14:28:30,275 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 14:28:30,280 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 14:28:30,296 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 14:28:30,340 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 14:28:30,340 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 14:28:30,340 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 14:28:30,340 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 14:28:30,341 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 14:28:30,341 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 14:28:30,341 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 14:28:30,341 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 14:28:30,373 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-10-28 14:28:30,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-28 14:28:30,383 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:28:30,384 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] [2020-10-28 14:28:30,385 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:28:30,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:28:30,396 INFO L82 PathProgramCache]: Analyzing trace with hash 183956236, now seen corresponding path program 1 times [2020-10-28 14:28:30,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:28:30,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [820829410] [2020-10-28 14:28:30,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:28:30,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:28:30,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:28:30,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:28:30,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:28:30,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:28:30,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 14:28:30,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:28:30,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 342 [2020-10-28 14:28:30,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:28:30,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:28:30,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:28:30,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 14:28:30,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:28:30,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 14:28:31,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:28:31,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:28:31,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:28:31,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:28:31,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:28:31,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:28:31,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 14:28:31,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:28:31,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:28:31,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:28:31,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:28:31,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:28:31,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:28:31,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:28:31,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:28:31,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:28:31,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:28:31,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:28:31,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 14:28:31,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:28:31,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 14:28:31,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:28:31,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:28:31,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:28:31,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-28 14:28:31,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:28:31,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:28:31,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-28 14:28:31,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:28:31,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:28:31,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:28:31,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:28:31,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:28:31,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:28:31,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 14:28:31,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:28:31,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:28:31,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:28:31,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 14:28:31,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:28:31,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:28:31,113 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 14:28:31,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [820829410] [2020-10-28 14:28:31,119 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:28:31,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 14:28:31,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658280926] [2020-10-28 14:28:31,126 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 14:28:31,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:28:31,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 14:28:31,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:28:31,143 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 4 states. [2020-10-28 14:28:31,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:28:31,357 INFO L93 Difference]: Finished difference Result 59 states and 73 transitions. [2020-10-28 14:28:31,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 14:28:31,360 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-10-28 14:28:31,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:28:31,369 INFO L225 Difference]: With dead ends: 59 [2020-10-28 14:28:31,369 INFO L226 Difference]: Without dead ends: 28 [2020-10-28 14:28:31,373 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 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 14:28:31,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-28 14:28:31,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-28 14:28:31,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-28 14:28:31,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 27 transitions. [2020-10-28 14:28:31,433 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 27 transitions. Word has length 24 [2020-10-28 14:28:31,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:28:31,434 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 27 transitions. [2020-10-28 14:28:31,434 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 14:28:31,435 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 27 transitions. [2020-10-28 14:28:31,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-28 14:28:31,436 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:28:31,436 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:28:31,437 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 14:28:31,437 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:28:31,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:28:31,438 INFO L82 PathProgramCache]: Analyzing trace with hash 705582843, now seen corresponding path program 1 times [2020-10-28 14:28:31,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:28:31,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [135424913] [2020-10-28 14:28:31,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:28:31,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-28 14:28:31,485 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-28 14:28:31,485 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-28 14:28:31,490 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 14:28:31,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 02:28:31 BoogieIcfgContainer [2020-10-28 14:28:31,510 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 14:28:31,512 INFO L168 Benchmark]: Toolchain (without parser) took 2316.46 ms. Allocated memory is still 151.0 MB. Free memory was 126.6 MB in the beginning and 69.5 MB in the end (delta: 57.2 MB). Peak memory consumption was 57.2 MB. Max. memory is 8.0 GB. [2020-10-28 14:28:31,513 INFO L168 Benchmark]: CDTParser took 0.57 ms. Allocated memory is still 151.0 MB. Free memory was 123.5 MB in the beginning and 123.3 MB in the end (delta: 141.6 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 14:28:31,515 INFO L168 Benchmark]: CACSL2BoogieTranslator took 256.93 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 116.2 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-28 14:28:31,515 INFO L168 Benchmark]: Boogie Preprocessor took 41.26 ms. Allocated memory is still 151.0 MB. Free memory was 116.0 MB in the beginning and 114.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-28 14:28:31,516 INFO L168 Benchmark]: RCFGBuilder took 737.98 ms. Allocated memory is still 151.0 MB. Free memory was 114.4 MB in the beginning and 131.3 MB in the end (delta: -17.0 MB). Peak memory consumption was 15.2 MB. Max. memory is 8.0 GB. [2020-10-28 14:28:31,517 INFO L168 Benchmark]: TraceAbstraction took 1263.61 ms. Allocated memory is still 151.0 MB. Free memory was 131.3 MB in the beginning and 69.5 MB in the end (delta: 61.9 MB). Peak memory consumption was 61.9 MB. Max. memory is 8.0 GB. [2020-10-28 14:28:31,521 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.57 ms. Allocated memory is still 151.0 MB. Free memory was 123.5 MB in the beginning and 123.3 MB in the end (delta: 141.6 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 256.93 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 116.2 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 41.26 ms. Allocated memory is still 151.0 MB. Free memory was 116.0 MB in the beginning and 114.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 737.98 ms. Allocated memory is still 151.0 MB. Free memory was 114.4 MB in the beginning and 131.3 MB in the end (delta: -17.0 MB). Peak memory consumption was 15.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1263.61 ms. Allocated memory is still 151.0 MB. Free memory was 131.3 MB in the beginning and 69.5 MB in the end (delta: 61.9 MB). Peak memory consumption was 61.9 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 48, overapproximation of bitwiseAnd at line 36. Possible FailurePath: [L48] float x = 1.0f / 0.0f; [L49] CALL, EXPR fabs_float(x) [L14] __uint32_t ix; [L16] ieee_float_shape_type gf_u; [L17] gf_u.value = (x) [L18] EXPR gf_u.word [L18] (ix) = gf_u.word [L21] ieee_float_shape_type sf_u; [L22] sf_u.word = (ix & 0x7fffffff) [L23] EXPR sf_u.value [L23] (x) = sf_u.value [L25] return x; [L49] RET, EXPR fabs_float(x) [L49] float res = fabs_float(x); [L52] CALL, EXPR isinf_float(res) [L30] __int32_t ix; [L32] ieee_float_shape_type gf_u; [L33] gf_u.value = (x) [L34] EXPR gf_u.word [L34] (ix) = gf_u.word [L36] ix &= 0x7fffffff [L37] return ((ix) == 0x7f800000L); [L52] RET, EXPR isinf_float(res) [L52] COND TRUE !isinf_float(res) [L53] CALL reach_error() [L3] __assert_fail("0", "float_req_bl_1012a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 28 SDtfs, 8 SDslu, 21 SDs, 0 SdLazy, 26 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred 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, 51 NumberOfCodeBlocks, 51 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 1771 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...