/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_0960a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 01:03:44,418 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 01:03:44,420 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 01:03:44,459 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 01:03:44,459 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 01:03:44,461 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 01:03:44,463 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 01:03:44,465 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 01:03:44,467 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 01:03:44,469 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 01:03:44,470 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 01:03:44,471 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 01:03:44,472 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 01:03:44,473 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 01:03:44,474 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 01:03:44,476 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 01:03:44,477 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 01:03:44,478 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 01:03:44,480 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 01:03:44,482 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 01:03:44,484 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 01:03:44,486 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 01:03:44,487 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 01:03:44,488 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 01:03:44,491 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 01:03:44,492 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 01:03:44,492 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 01:03:44,493 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 01:03:44,494 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 01:03:44,495 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 01:03:44,496 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 01:03:44,502 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 01:03:44,503 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 01:03:44,504 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 01:03:44,505 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 01:03:44,505 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 01:03:44,506 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 01:03:44,506 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 01:03:44,507 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 01:03:44,508 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 01:03:44,508 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 01:03:44,510 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 [2020-10-27 01:03:44,538 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 01:03:44,538 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 01:03:44,540 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 01:03:44,540 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 01:03:44,540 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 01:03:44,541 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 01:03:44,541 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 01:03:44,541 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 01:03:44,541 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 01:03:44,542 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 01:03:44,542 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 01:03:44,542 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 01:03:44,542 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 01:03:44,543 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 01:03:44,543 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 01:03:44,543 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 01:03:44,543 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 01:03:44,544 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 01:03:44,544 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 01:03:44,544 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 01:03:44,545 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 01:03:44,545 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:03:44,545 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 01:03:44,545 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 01:03:44,546 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 01:03:44,546 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 01:03:44,546 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 01:03:44,547 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 01:03:44,547 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 01:03:44,547 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 01:03:44,915 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 01:03:44,944 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 01:03:44,947 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 01:03:44,948 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 01:03:44,949 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 01:03:44,950 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0960a.c [2020-10-27 01:03:45,045 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1648d3e62/3d6b9c7ff68e46c8a78a36a457081cf3/FLAG970d49a07 [2020-10-27 01:03:45,793 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 01:03:45,794 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_0960a.c [2020-10-27 01:03:45,807 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1648d3e62/3d6b9c7ff68e46c8a78a36a457081cf3/FLAG970d49a07 [2020-10-27 01:03:46,097 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1648d3e62/3d6b9c7ff68e46c8a78a36a457081cf3 [2020-10-27 01:03:46,101 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 01:03:46,109 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 01:03:46,111 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 01:03:46,111 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 01:03:46,115 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 01:03:46,116 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:03:46" (1/1) ... [2020-10-27 01:03:46,119 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22af7c95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:46, skipping insertion in model container [2020-10-27 01:03:46,120 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:03:46" (1/1) ... [2020-10-27 01:03:46,129 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 01:03:46,152 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 01:03:46,374 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:03:46,386 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 01:03:46,436 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:03:46,456 INFO L208 MainTranslator]: Completed translation [2020-10-27 01:03:46,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:46 WrapperNode [2020-10-27 01:03:46,457 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 01:03:46,458 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 01:03:46,459 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 01:03:46,459 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 01:03:46,474 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:46" (1/1) ... [2020-10-27 01:03:46,475 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:46" (1/1) ... [2020-10-27 01:03:46,487 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:46" (1/1) ... [2020-10-27 01:03:46,488 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:46" (1/1) ... [2020-10-27 01:03:46,507 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:46" (1/1) ... [2020-10-27 01:03:46,516 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:46" (1/1) ... [2020-10-27 01:03:46,519 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:46" (1/1) ... [2020-10-27 01:03:46,524 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 01:03:46,525 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 01:03:46,525 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 01:03:46,525 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 01:03:46,526 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:46" (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 01:03:46,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 01:03:46,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 01:03:46,610 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 01:03:46,610 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_logf [2020-10-27 01:03:46,610 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_log10f [2020-10-27 01:03:46,611 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_float [2020-10-27 01:03:46,611 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 01:03:46,611 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 01:03:46,611 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 01:03:46,611 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 01:03:46,612 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 01:03:46,612 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-27 01:03:46,612 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_logf [2020-10-27 01:03:46,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-27 01:03:46,612 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 01:03:46,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 01:03:46,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 01:03:46,613 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-27 01:03:46,613 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_log10f [2020-10-27 01:03:46,613 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_float [2020-10-27 01:03:46,613 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 01:03:46,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 01:03:46,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 01:03:46,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 01:03:47,250 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 01:03:47,250 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-10-27 01:03:47,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:03:47 BoogieIcfgContainer [2020-10-27 01:03:47,252 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 01:03:47,257 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 01:03:47,257 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 01:03:47,261 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 01:03:47,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 01:03:46" (1/3) ... [2020-10-27 01:03:47,263 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5472454b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:03:47, skipping insertion in model container [2020-10-27 01:03:47,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:46" (2/3) ... [2020-10-27 01:03:47,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5472454b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:03:47, skipping insertion in model container [2020-10-27 01:03:47,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:03:47" (3/3) ... [2020-10-27 01:03:47,266 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0960a.c [2020-10-27 01:03:47,281 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 01:03:47,287 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 01:03:47,303 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 01:03:47,355 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 01:03:47,355 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 01:03:47,355 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 01:03:47,355 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 01:03:47,356 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 01:03:47,356 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 01:03:47,356 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 01:03:47,356 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 01:03:47,396 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states. [2020-10-27 01:03:47,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-27 01:03:47,405 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:03:47,406 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] [2020-10-27 01:03:47,407 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:03:47,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:03:47,417 INFO L82 PathProgramCache]: Analyzing trace with hash 1674034590, now seen corresponding path program 1 times [2020-10-27 01:03:47,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:03:47,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1332827601] [2020-10-27 01:03:47,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:03:47,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:03:47,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:03:47,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:03:47,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:03:47,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-27 01:03:47,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:03:47,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-27 01:03:47,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:03:47,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:03:47,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 01:03:47,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:03:47,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 01:03:48,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:03:48,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:03:48,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:03:48,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:03:48,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:03:48,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:03:48,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 01:03:48,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:03:48,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:03:48,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:03:48,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:03:48,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:03:48,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:03:48,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:03:48,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:03:48,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:03:48,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 01:03:48,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:03:48,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 01:03:48,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:03:48,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:03:48,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 01:03:48,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:03:48,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:03:48,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-27 01:03:48,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:03:48,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:03:48,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:03:48,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:03:48,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:03:48,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:03:48,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 01:03:48,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:03:48,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:03:48,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 01:03:48,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:03:48,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:03:48,179 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 01:03:48,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1332827601] [2020-10-27 01:03:48,182 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:03:48,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 01:03:48,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544057641] [2020-10-27 01:03:48,188 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 01:03:48,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:03:48,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 01:03:48,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 01:03:48,206 INFO L87 Difference]: Start difference. First operand 67 states. Second operand 4 states. [2020-10-27 01:03:48,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:03:48,564 INFO L93 Difference]: Finished difference Result 123 states and 184 transitions. [2020-10-27 01:03:48,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 01:03:48,567 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-10-27 01:03:48,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:03:48,578 INFO L225 Difference]: With dead ends: 123 [2020-10-27 01:03:48,578 INFO L226 Difference]: Without dead ends: 60 [2020-10-27 01:03:48,582 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 01:03:48,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-27 01:03:48,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-10-27 01:03:48,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-27 01:03:48,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 74 transitions. [2020-10-27 01:03:48,650 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 74 transitions. Word has length 24 [2020-10-27 01:03:48,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:03:48,651 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 74 transitions. [2020-10-27 01:03:48,651 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 01:03:48,651 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 74 transitions. [2020-10-27 01:03:48,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-27 01:03:48,653 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:03:48,653 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] [2020-10-27 01:03:48,653 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 01:03:48,653 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:03:48,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:03:48,654 INFO L82 PathProgramCache]: Analyzing trace with hash -783601326, now seen corresponding path program 1 times [2020-10-27 01:03:48,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:03:48,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [958350754] [2020-10-27 01:03:48,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:03:48,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 01:03:48,725 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 01:03:48,726 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 01:03:48,732 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 01:03:48,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 01:03:48 BoogieIcfgContainer [2020-10-27 01:03:48,752 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 01:03:48,755 INFO L168 Benchmark]: Toolchain (without parser) took 2650.61 ms. Allocated memory is still 162.5 MB. Free memory was 137.4 MB in the beginning and 134.4 MB in the end (delta: 3.0 MB). Peak memory consumption was 4.1 MB. Max. memory is 8.0 GB. [2020-10-27 01:03:48,756 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 125.8 MB. Free memory is still 85.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 01:03:48,757 INFO L168 Benchmark]: CACSL2BoogieTranslator took 346.97 ms. Allocated memory is still 162.5 MB. Free memory was 136.6 MB in the beginning and 123.9 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-10-27 01:03:48,758 INFO L168 Benchmark]: Boogie Preprocessor took 65.74 ms. Allocated memory is still 162.5 MB. Free memory was 123.9 MB in the beginning and 121.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-27 01:03:48,759 INFO L168 Benchmark]: RCFGBuilder took 727.26 ms. Allocated memory is still 162.5 MB. Free memory was 121.4 MB in the beginning and 92.5 MB in the end (delta: 28.8 MB). Peak memory consumption was 29.4 MB. Max. memory is 8.0 GB. [2020-10-27 01:03:48,759 INFO L168 Benchmark]: TraceAbstraction took 1495.72 ms. Allocated memory is still 162.5 MB. Free memory was 92.0 MB in the beginning and 134.4 MB in the end (delta: -42.4 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 01:03:48,763 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 125.8 MB. Free memory is still 85.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 346.97 ms. Allocated memory is still 162.5 MB. Free memory was 136.6 MB in the beginning and 123.9 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 65.74 ms. Allocated memory is still 162.5 MB. Free memory was 123.9 MB in the beginning and 121.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 727.26 ms. Allocated memory is still 162.5 MB. Free memory was 121.4 MB in the beginning and 92.5 MB in the end (delta: 28.8 MB). Peak memory consumption was 29.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1495.72 ms. Allocated memory is still 162.5 MB. Free memory was 92.0 MB in the beginning and 134.4 MB in the end (delta: -42.4 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 someBinaryArithmeticFLOAToperation at line 119, overapproximation of bitwiseAnd at line 154. Possible FailurePath: [L14-L18] static const float ln2_hi_log = 6.9313812256e-01, ln2_lo_log = 9.0580006145e-06, two25_log = 3.355443200e+07, Lg1_log = 6.6666668653e-01, Lg2_log = 4.0000000596e-01, Lg3_log = 2.8571429849e-01, Lg4_log = 2.2222198546e-01, Lg5_log = 1.8183572590e-01, Lg6_log = 1.5313838422e-01, Lg7_log = 1.4798198640e-01; [L20] static const float zero_log = 0.0; [L100-L103] static const float two25_log10 = 3.3554432000e+07, ivln10_log10 = 4.3429449201e-01, log10_2hi_log10 = 3.0102920532e-01, log10_2lo_log10 = 7.9034151668e-07; [L105] static const float zero = 0.0; [L164] float x = 0.0f; [L165] CALL, EXPR __ieee754_log10f(x) [L108] float y, z; [L109] __int32_t i, k, hx; [L112] ieee_float_shape_type gf_u; [L113] gf_u.value = (x) [L114] EXPR gf_u.word [L114] (hx) = gf_u.word [L117] k = 0 [L118] COND TRUE ((hx & 0x7fffffff) == 0) [L119] return -two25_log10 / zero; [L165] RET, EXPR __ieee754_log10f(x) [L165] float res = __ieee754_log10f(x); [L168] CALL, EXPR isinf_float(res) [L148] __int32_t ix; [L150] ieee_float_shape_type gf_u; [L151] gf_u.value = (x) [L152] EXPR gf_u.word [L152] (ix) = gf_u.word [L154] ix &= 0x7fffffff [L155] return ((ix) == 0x7f800000L); [L168] RET, EXPR isinf_float(res) [L168] COND TRUE !isinf_float(res) [L169] CALL reach_error() [L3] __assert_fail("0", "float_req_bl_0960a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 67 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 74 SDtfs, 10 SDslu, 63 SDs, 0 SdLazy, 75 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=67occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 50 NumberOfCodeBlocks, 50 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 2875 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...