/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_0730a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 01:03:29,410 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 01:03:29,413 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 01:03:29,450 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 01:03:29,451 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 01:03:29,452 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 01:03:29,454 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 01:03:29,457 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 01:03:29,459 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 01:03:29,460 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 01:03:29,461 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 01:03:29,463 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 01:03:29,464 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 01:03:29,465 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 01:03:29,467 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 01:03:29,468 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 01:03:29,470 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 01:03:29,471 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 01:03:29,477 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 01:03:29,482 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 01:03:29,486 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 01:03:29,490 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 01:03:29,493 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 01:03:29,495 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 01:03:29,506 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 01:03:29,506 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 01:03:29,506 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 01:03:29,508 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 01:03:29,514 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 01:03:29,515 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 01:03:29,515 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 01:03:29,516 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 01:03:29,517 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 01:03:29,519 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 01:03:29,521 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 01:03:29,522 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 01:03:29,524 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 01:03:29,524 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 01:03:29,524 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 01:03:29,526 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 01:03:29,526 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 01:03:29,527 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 01:03:29,580 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 01:03:29,580 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 01:03:29,582 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 01:03:29,582 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 01:03:29,582 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 01:03:29,583 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 01:03:29,583 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 01:03:29,583 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 01:03:29,583 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 01:03:29,584 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 01:03:29,584 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 01:03:29,584 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 01:03:29,584 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 01:03:29,585 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 01:03:29,585 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 01:03:29,585 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 01:03:29,585 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 01:03:29,585 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 01:03:29,586 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 01:03:29,586 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 01:03:29,586 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 01:03:29,586 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:03:29,587 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 01:03:29,587 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 01:03:29,587 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 01:03:29,587 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 01:03:29,587 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 01:03:29,588 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 01:03:29,588 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 01:03:29,588 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 01:03:29,974 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 01:03:30,007 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 01:03:30,010 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 01:03:30,012 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 01:03:30,013 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 01:03:30,014 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0730a.c [2020-10-27 01:03:30,116 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/79379558c/fad808bfd798494d99ccc8ad7842a7a9/FLAG35e7596b6 [2020-10-27 01:03:30,744 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 01:03:30,745 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_0730a.c [2020-10-27 01:03:30,753 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/79379558c/fad808bfd798494d99ccc8ad7842a7a9/FLAG35e7596b6 [2020-10-27 01:03:31,101 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/79379558c/fad808bfd798494d99ccc8ad7842a7a9 [2020-10-27 01:03:31,104 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 01:03:31,112 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 01:03:31,118 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 01:03:31,118 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 01:03:31,123 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 01:03:31,124 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:03:31" (1/1) ... [2020-10-27 01:03:31,129 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f7a95fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:31, skipping insertion in model container [2020-10-27 01:03:31,129 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:03:31" (1/1) ... [2020-10-27 01:03:31,139 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 01:03:31,166 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 01:03:31,370 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:03:31,381 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 01:03:31,416 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:03:31,434 INFO L208 MainTranslator]: Completed translation [2020-10-27 01:03:31,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:31 WrapperNode [2020-10-27 01:03:31,435 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 01:03:31,436 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 01:03:31,437 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 01:03:31,437 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 01:03:31,450 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:31" (1/1) ... [2020-10-27 01:03:31,450 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:31" (1/1) ... [2020-10-27 01:03:31,461 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:31" (1/1) ... [2020-10-27 01:03:31,461 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:31" (1/1) ... [2020-10-27 01:03:31,474 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:31" (1/1) ... [2020-10-27 01:03:31,482 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:31" (1/1) ... [2020-10-27 01:03:31,485 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:31" (1/1) ... [2020-10-27 01:03:31,489 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 01:03:31,495 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 01:03:31,495 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 01:03:31,495 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 01:03:31,496 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:31" (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 01:03:31,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 01:03:31,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 01:03:31,563 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 01:03:31,564 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf [2020-10-27 01:03:31,564 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_float [2020-10-27 01:03:31,564 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 01:03:31,564 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 01:03:31,564 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 01:03:31,565 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 01:03:31,565 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 01:03:31,565 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-27 01:03:31,565 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf [2020-10-27 01:03:31,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-27 01:03:31,566 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 01:03:31,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 01:03:31,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 01:03:31,566 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-27 01:03:31,566 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_float [2020-10-27 01:03:31,566 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 01:03:31,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 01:03:31,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 01:03:31,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 01:03:32,060 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 01:03:32,061 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-27 01:03:32,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:03:32 BoogieIcfgContainer [2020-10-27 01:03:32,063 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 01:03:32,079 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 01:03:32,079 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 01:03:32,087 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 01:03:32,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 01:03:31" (1/3) ... [2020-10-27 01:03:32,089 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18dac417 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:03:32, skipping insertion in model container [2020-10-27 01:03:32,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:31" (2/3) ... [2020-10-27 01:03:32,089 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18dac417 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:03:32, skipping insertion in model container [2020-10-27 01:03:32,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:03:32" (3/3) ... [2020-10-27 01:03:32,091 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0730a.c [2020-10-27 01:03:32,100 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 01:03:32,105 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 01:03:32,117 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 01:03:32,145 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 01:03:32,145 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 01:03:32,145 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 01:03:32,145 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 01:03:32,145 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 01:03:32,146 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 01:03:32,146 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 01:03:32,146 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 01:03:32,170 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states. [2020-10-27 01:03:32,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-27 01:03:32,180 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:03:32,180 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 01:03:32,181 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:03:32,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:03:32,187 INFO L82 PathProgramCache]: Analyzing trace with hash -1258470498, now seen corresponding path program 1 times [2020-10-27 01:03:32,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:03:32,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2082899049] [2020-10-27 01:03:32,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:03:32,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:03:32,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:03:32,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:03:32,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:03:32,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-27 01:03:32,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:03:32,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-10-27 01:03:32,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:03:32,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:03:32,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 01:03:32,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:03:32,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-27 01:03:32,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:03:32,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:03:32,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:03:32,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:03:32,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:03:32,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:03:32,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 01:03:32,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:03:32,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:03:32,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:03:32,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:03:32,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:03:32,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:03:32,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:03:32,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:03:32,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:03:32,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 01:03:32,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:03:32,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 01:03:32,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:03:32,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:03:32,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 01:03:32,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:03:32,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:03:32,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-27 01:03:32,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:03:32,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:03:32,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:03:32,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:03:32,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:03:32,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:03:32,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 01:03:32,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:03:32,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:03:32,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 01:03:32,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:03:32,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:03:32,814 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 01:03:32,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2082899049] [2020-10-27 01:03:32,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:03:32,818 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 01:03:32,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263950591] [2020-10-27 01:03:32,825 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 01:03:32,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:03:32,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 01:03:32,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 01:03:32,848 INFO L87 Difference]: Start difference. First operand 53 states. Second operand 4 states. [2020-10-27 01:03:33,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:03:33,142 INFO L93 Difference]: Finished difference Result 95 states and 135 transitions. [2020-10-27 01:03:33,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 01:03:33,144 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-10-27 01:03:33,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:03:33,154 INFO L225 Difference]: With dead ends: 95 [2020-10-27 01:03:33,154 INFO L226 Difference]: Without dead ends: 46 [2020-10-27 01:03:33,158 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 01:03:33,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-27 01:03:33,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-10-27 01:03:33,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-27 01:03:33,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 56 transitions. [2020-10-27 01:03:33,207 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 56 transitions. Word has length 24 [2020-10-27 01:03:33,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:03:33,207 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 56 transitions. [2020-10-27 01:03:33,207 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 01:03:33,208 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 56 transitions. [2020-10-27 01:03:33,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-27 01:03:33,209 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:03:33,209 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 01:03:33,210 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 01:03:33,210 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:03:33,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:03:33,211 INFO L82 PathProgramCache]: Analyzing trace with hash -773151450, now seen corresponding path program 1 times [2020-10-27 01:03:33,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:03:33,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1064264298] [2020-10-27 01:03:33,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:03:33,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 01:03:33,260 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 01:03:33,260 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 01:03:33,266 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 01:03:33,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 01:03:33 BoogieIcfgContainer [2020-10-27 01:03:33,284 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 01:03:33,287 INFO L168 Benchmark]: Toolchain (without parser) took 2179.13 ms. Allocated memory is still 157.3 MB. Free memory was 132.5 MB in the beginning and 120.3 MB in the end (delta: 12.2 MB). Peak memory consumption was 13.7 MB. Max. memory is 8.0 GB. [2020-10-27 01:03:33,287 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 125.8 MB. Free memory is still 80.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 01:03:33,288 INFO L168 Benchmark]: CACSL2BoogieTranslator took 318.00 ms. Allocated memory is still 157.3 MB. Free memory was 132.1 MB in the beginning and 121.1 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-27 01:03:33,289 INFO L168 Benchmark]: Boogie Preprocessor took 53.15 ms. Allocated memory is still 157.3 MB. Free memory was 121.1 MB in the beginning and 119.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-27 01:03:33,290 INFO L168 Benchmark]: RCFGBuilder took 568.51 ms. Allocated memory is still 157.3 MB. Free memory was 119.1 MB in the beginning and 139.5 MB in the end (delta: -20.4 MB). Peak memory consumption was 28.5 MB. Max. memory is 8.0 GB. [2020-10-27 01:03:33,291 INFO L168 Benchmark]: TraceAbstraction took 1205.12 ms. Allocated memory is still 157.3 MB. Free memory was 139.0 MB in the beginning and 120.3 MB in the end (delta: 18.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 8.0 GB. [2020-10-27 01:03:33,295 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 125.8 MB. Free memory is still 80.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 318.00 ms. Allocated memory is still 157.3 MB. Free memory was 132.1 MB in the beginning and 121.1 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 53.15 ms. Allocated memory is still 157.3 MB. Free memory was 121.1 MB in the beginning and 119.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 568.51 ms. Allocated memory is still 157.3 MB. Free memory was 119.1 MB in the beginning and 139.5 MB in the end (delta: -20.4 MB). Peak memory consumption was 28.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1205.12 ms. Allocated memory is still 157.3 MB. Free memory was 139.0 MB in the beginning and 120.3 MB in the end (delta: 18.7 MB). Peak memory consumption was 18.7 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, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s 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...