/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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 SingleStatement --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=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1091.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:11:11,646 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:11:11,650 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:11:11,682 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:11:11,683 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:11:11,692 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:11:11,694 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:11:11,699 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:11:11,703 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:11:11,706 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:11:11,708 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:11:11,709 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:11:11,709 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:11:11,713 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:11:11,716 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:11:11,718 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:11:11,720 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:11:11,722 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:11:11,724 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:11:11,732 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:11:11,734 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:11:11,736 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:11:11,737 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:11:11,738 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:11:11,756 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:11:11,756 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:11:11,756 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:11:11,760 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:11:11,760 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:11:11,762 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:11:11,765 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:11:11,766 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:11:11,768 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:11:11,769 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:11:11,771 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:11:11,771 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:11:11,772 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:11:11,772 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:11:11,772 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:11:11,774 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:11:11,775 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:11:11,776 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 [2020-09-24 18:11:11,829 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:11:11,830 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:11:11,832 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:11:11,832 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:11:11,832 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:11:11,833 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:11:11,833 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:11:11,833 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:11:11,833 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:11:11,834 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:11:11,835 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:11:11,835 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:11:11,835 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:11:11,836 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:11:11,836 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:11:11,836 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:11:11,836 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:11:11,837 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:11:11,837 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:11:11,837 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:11:11,837 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:11:11,837 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:11:11,838 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:11:11,838 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:11:11,838 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:11:11,838 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:11:11,838 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:11:11,838 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:11:11,839 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:11:11,839 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> SingleStatement 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=SMALLEST;log-additional-information=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=SMALLEST;log-additional-information=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=SMALLEST;log-additional-information=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=SMALLEST;log-additional-information=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=SMALLEST;log-additional-information=true; [2020-09-24 18:11:12,342 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:11:12,358 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:11:12,362 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:11:12,364 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:11:12,364 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:11:12,368 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1091.c [2020-09-24 18:11:12,465 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/42f8a1590/a148f8107a2e4caaa441096233d31a5d/FLAG572067bea [2020-09-24 18:11:13,037 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:11:13,037 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1091.c [2020-09-24 18:11:13,047 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/42f8a1590/a148f8107a2e4caaa441096233d31a5d/FLAG572067bea [2020-09-24 18:11:13,370 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/42f8a1590/a148f8107a2e4caaa441096233d31a5d [2020-09-24 18:11:13,385 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:11:13,391 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:11:13,392 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:11:13,393 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:11:13,397 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:11:13,398 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:11:13" (1/1) ... [2020-09-24 18:11:13,402 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@377d8449 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:11:13, skipping insertion in model container [2020-09-24 18:11:13,402 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:11:13" (1/1) ... [2020-09-24 18:11:13,411 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:11:13,439 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:11:13,687 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:11:13,693 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:11:13,728 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:11:13,756 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:11:13,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:11:13 WrapperNode [2020-09-24 18:11:13,757 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:11:13,758 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:11:13,758 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:11:13,758 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:11:13,853 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:11:13" (1/1) ... [2020-09-24 18:11:13,853 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:11:13" (1/1) ... [2020-09-24 18:11:13,864 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:11:13" (1/1) ... [2020-09-24 18:11:13,865 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:11:13" (1/1) ... [2020-09-24 18:11:13,876 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:11:13" (1/1) ... [2020-09-24 18:11:13,883 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:11:13" (1/1) ... [2020-09-24 18:11:13,885 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:11:13" (1/1) ... [2020-09-24 18:11:13,888 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:11:13,889 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:11:13,889 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:11:13,889 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:11:13,897 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:11:13" (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 [2020-09-24 18:11:13,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:11:13,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:11:13,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_float [2020-09-24 18:11:13,968 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2020-09-24 18:11:13,969 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:11:13,969 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:11:13,969 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_float [2020-09-24 18:11:13,969 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 18:11:13,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-24 18:11:13,970 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 18:11:13,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 18:11:13,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 18:11:13,970 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-24 18:11:13,970 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2020-09-24 18:11:13,970 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:11:13,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:11:13,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:11:14,367 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:11:14,367 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-24 18:11:14,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:11:14 BoogieIcfgContainer [2020-09-24 18:11:14,374 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:11:14,383 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:11:14,383 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:11:14,387 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:11:14,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:11:13" (1/3) ... [2020-09-24 18:11:14,388 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f244a94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:11:14, skipping insertion in model container [2020-09-24 18:11:14,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:11:13" (2/3) ... [2020-09-24 18:11:14,388 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f244a94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:11:14, skipping insertion in model container [2020-09-24 18:11:14,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:11:14" (3/3) ... [2020-09-24 18:11:14,391 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1091.c [2020-09-24 18:11:14,400 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:11:14,410 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:11:14,429 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:11:14,459 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:11:14,459 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:11:14,459 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:11:14,459 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:11:14,459 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:11:14,459 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:11:14,459 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:11:14,460 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:11:14,484 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-09-24 18:11:14,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 18:11:14,492 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:11:14,493 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, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:11:14,494 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:11:14,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:11:14,502 INFO L82 PathProgramCache]: Analyzing trace with hash -1889128291, now seen corresponding path program 1 times [2020-09-24 18:11:14,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:11:14,512 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [799105846] [2020-09-24 18:11:14,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:11:14,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:14,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:14,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:14,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-24 18:11:14,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:14,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-09-24 18:11:14,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:14,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:14,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 18:11:14,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:14,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 18:11:14,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:11:14,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:14,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:14,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:14,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:11:14,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:14,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 18:11:14,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:14,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:14,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:14,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:14,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:11:14,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 18:11:14,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:14,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:15,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:15,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-24 18:11:15,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:15,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-24 18:11:15,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:15,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:15,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 18:11:15,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:15,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:11:15,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 18:11:15,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:15,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:15,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:15,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:11:15,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:15,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:11:15,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:15,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:15,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 18:11:15,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:15,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 18:11:15,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:11:15,061 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [799105846] [2020-09-24 18:11:15,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:11:15,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 18:11:15,066 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227266188] [2020-09-24 18:11:15,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 18:11:15,076 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:11:15,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 18:11:15,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:11:15,094 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 4 states. [2020-09-24 18:11:15,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:11:15,412 INFO L93 Difference]: Finished difference Result 136 states and 162 transitions. [2020-09-24 18:11:15,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 18:11:15,416 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-09-24 18:11:15,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:11:15,436 INFO L225 Difference]: With dead ends: 136 [2020-09-24 18:11:15,436 INFO L226 Difference]: Without dead ends: 69 [2020-09-24 18:11:15,443 INFO L675 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 [2020-09-24 18:11:15,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-09-24 18:11:15,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-09-24 18:11:15,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-09-24 18:11:15,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 77 transitions. [2020-09-24 18:11:15,530 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 77 transitions. Word has length 34 [2020-09-24 18:11:15,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:11:15,530 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 77 transitions. [2020-09-24 18:11:15,531 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 18:11:15,531 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 77 transitions. [2020-09-24 18:11:15,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-24 18:11:15,533 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:11:15,534 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:11:15,534 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:11:15,534 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:11:15,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:11:15,535 INFO L82 PathProgramCache]: Analyzing trace with hash -1353425746, now seen corresponding path program 1 times [2020-09-24 18:11:15,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:11:15,536 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [454767554] [2020-09-24 18:11:15,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:11:15,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 18:11:15,589 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 18:11:15,590 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 18:11:15,603 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:11:15,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 06:11:15 BoogieIcfgContainer [2020-09-24 18:11:15,641 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 18:11:15,646 INFO L168 Benchmark]: Toolchain (without parser) took 2256.32 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 104.6 MB in the beginning and 95.0 MB in the end (delta: 9.6 MB). Peak memory consumption was 73.0 MB. Max. memory is 7.1 GB. [2020-09-24 18:11:15,648 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 18:11:15,658 INFO L168 Benchmark]: CACSL2BoogieTranslator took 364.93 ms. Allocated memory is still 141.0 MB. Free memory was 103.9 MB in the beginning and 92.9 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. [2020-09-24 18:11:15,660 INFO L168 Benchmark]: Boogie Preprocessor took 130.78 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 92.9 MB in the beginning and 181.7 MB in the end (delta: -88.8 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-09-24 18:11:15,661 INFO L168 Benchmark]: RCFGBuilder took 485.24 ms. Allocated memory is still 204.5 MB. Free memory was 181.7 MB in the beginning and 159.7 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2020-09-24 18:11:15,663 INFO L168 Benchmark]: TraceAbstraction took 1257.87 ms. Allocated memory is still 204.5 MB. Free memory was 159.7 MB in the beginning and 95.0 MB in the end (delta: 64.8 MB). Peak memory consumption was 64.8 MB. Max. memory is 7.1 GB. [2020-09-24 18:11:15,684 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 364.93 ms. Allocated memory is still 141.0 MB. Free memory was 103.9 MB in the beginning and 92.9 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 130.78 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 92.9 MB in the beginning and 181.7 MB in the end (delta: -88.8 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 485.24 ms. Allocated memory is still 204.5 MB. Free memory was 181.7 MB in the beginning and 159.7 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1257.87 ms. Allocated memory is still 204.5 MB. Free memory was 159.7 MB in the beginning and 95.0 MB in the end (delta: 64.8 MB). Peak memory consumption was 64.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 72]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 57, overapproximation of someBinaryArithmeticFLOAToperation at line 44, overapproximation of bitwiseAnd at line 21. Possible FailurePath: [L11] static const float huge_ceil = 1.0e30; [L66] float x = 0.0f / 0.0f; [L68] CALL, EXPR ceil_float(x) [L14] __int32_t i0, j0; [L15] __uint32_t i, ix; [L17] ieee_float_shape_type gf_u; [L18] gf_u.value = (x) [L19] EXPR gf_u.word [L19] (i0) = gf_u.word [L21] ix = (i0 & 0x7fffffff) [L22] j0 = (ix >> 23) - 0x7f [L23] COND FALSE !(j0 < 23) [L43] COND TRUE !((ix) < 0x7f800000L) [L44] return x + x; [L68] RET, EXPR ceil_float(x) [L68] float res = ceil_float(x); [L71] CALL, EXPR isnan_float(res) [L57] return x != x; [L71] RET, EXPR isnan_float(res) [L71] COND TRUE !isnan_float(res) [L72] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 76 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: 81 SDtfs, 19 SDslu, 58 SDs, 0 SdLazy, 83 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=76occurred 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, 77 NumberOfCodeBlocks, 77 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 33 ConstructedInterpolants, 0 QuantifiedInterpolants, 1881 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...