/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=LOWLEXORDER --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/double_req_bl_1131b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:30:17,376 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:30:17,380 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:30:17,424 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:30:17,425 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:30:17,432 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:30:17,435 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:30:17,438 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:30:17,441 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:30:17,446 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:30:17,447 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:30:17,448 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:30:17,449 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:30:17,452 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:30:17,455 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:30:17,456 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:30:17,458 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:30:17,460 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:30:17,461 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:30:17,470 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:30:17,472 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:30:17,473 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:30:17,474 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:30:17,475 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:30:17,488 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:30:17,488 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:30:17,488 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:30:17,491 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:30:17,492 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:30:17,494 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:30:17,494 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:30:17,495 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:30:17,496 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:30:17,497 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:30:17,498 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:30:17,498 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:30:17,499 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:30:17,499 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:30:17,500 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:30:17,501 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:30:17,502 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:30:17,503 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 21:30:17,549 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:30:17,549 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:30:17,551 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:30:17,551 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:30:17,551 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:30:17,552 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:30:17,552 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:30:17,552 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:30:17,553 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:30:17,553 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:30:17,554 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:30:17,554 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:30:17,554 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:30:17,555 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:30:17,555 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:30:17,555 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:30:17,555 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:30:17,556 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:30:17,556 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:30:17,556 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:30:17,556 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:30:17,556 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:30:17,557 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:30:17,557 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:30:17,557 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:30:17,557 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:30:17,558 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:30:17,558 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:30:17,558 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:30:17,558 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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:30:18,049 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:30:18,073 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:30:18,078 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:30:18,080 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:30:18,080 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:30:18,081 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c [2020-09-24 21:30:18,161 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/729bafd82/ed46cb84a28645039df14cbd86fc54ae/FLAG19e59d3c7 [2020-09-24 21:30:18,779 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:30:18,780 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c [2020-09-24 21:30:18,790 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/729bafd82/ed46cb84a28645039df14cbd86fc54ae/FLAG19e59d3c7 [2020-09-24 21:30:19,049 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/729bafd82/ed46cb84a28645039df14cbd86fc54ae [2020-09-24 21:30:19,065 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:30:19,071 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:30:19,072 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:30:19,072 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:30:19,076 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:30:19,078 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:30:19" (1/1) ... [2020-09-24 21:30:19,082 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b54cc27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:19, skipping insertion in model container [2020-09-24 21:30:19,082 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:30:19" (1/1) ... [2020-09-24 21:30:19,092 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:30:19,126 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:30:19,395 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:30:19,402 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:30:19,548 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:30:19,579 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:30:19,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:19 WrapperNode [2020-09-24 21:30:19,580 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:30:19,581 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:30:19,581 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:30:19,581 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:30:19,598 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:19" (1/1) ... [2020-09-24 21:30:19,598 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:19" (1/1) ... [2020-09-24 21:30:19,614 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:19" (1/1) ... [2020-09-24 21:30:19,614 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:19" (1/1) ... [2020-09-24 21:30:19,635 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:19" (1/1) ... [2020-09-24 21:30:19,648 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:19" (1/1) ... [2020-09-24 21:30:19,651 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:19" (1/1) ... [2020-09-24 21:30:19,658 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:30:19,659 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:30:19,659 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:30:19,659 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:30:19,661 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:19" (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 21:30:19,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:30:19,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:30:19,735 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-09-24 21:30:19,735 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2020-09-24 21:30:19,736 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:30:19,736 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:30:19,736 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-09-24 21:30:19,736 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-09-24 21:30:19,737 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 21:30:19,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-24 21:30:19,737 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 21:30:19,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 21:30:19,738 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-24 21:30:19,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 21:30:19,738 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2020-09-24 21:30:19,739 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:30:19,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:30:19,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-09-24 21:30:19,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:30:20,500 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:30:20,501 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-09-24 21:30:20,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:30:20 BoogieIcfgContainer [2020-09-24 21:30:20,509 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:30:20,510 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:30:20,511 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:30:20,514 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:30:20,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:30:19" (1/3) ... [2020-09-24 21:30:20,516 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24d3afeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:30:20, skipping insertion in model container [2020-09-24 21:30:20,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:19" (2/3) ... [2020-09-24 21:30:20,516 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24d3afeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:30:20, skipping insertion in model container [2020-09-24 21:30:20,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:30:20" (3/3) ... [2020-09-24 21:30:20,519 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131b.c [2020-09-24 21:30:20,531 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:30:20,543 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:30:20,567 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:30:20,602 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:30:20,603 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:30:20,603 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:30:20,603 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:30:20,603 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:30:20,604 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:30:20,604 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:30:20,604 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:30:20,634 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2020-09-24 21:30:20,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-24 21:30:20,646 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:30:20,648 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:30:20,648 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:30:20,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:30:20,657 INFO L82 PathProgramCache]: Analyzing trace with hash -1577177176, now seen corresponding path program 1 times [2020-09-24 21:30:20,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:30:20,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [932745725] [2020-09-24 21:30:20,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:30:20,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:20,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:20,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:21,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:21,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:21,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-24 21:30:21,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:30:21,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 424 [2020-09-24 21:30:21,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:21,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:30:21,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-24 21:30:21,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:30:21,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 21:30:21,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:30:21,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:21,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:21,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:21,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 21:30:21,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:30:21,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 21:30:21,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:21,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:30:21,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:30:21,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:30:21,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:30:21,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-24 21:30:21,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:21,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:21,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:21,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:30:21,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:30:21,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-24 21:30:21,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:21,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:30:21,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-24 21:30:21,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:30:21,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:30:21,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 21:30:21,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:21,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:21,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:21,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:21,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:21,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-24 21:30:21,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:30:21,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 21:30:21,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:21,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:30:21,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 21:30:21,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:30:21,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:30:21,467 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 21:30:21,468 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [932745725] [2020-09-24 21:30:21,470 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:30:21,471 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 21:30:21,472 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184712224] [2020-09-24 21:30:21,479 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 21:30:21,480 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:30:21,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 21:30:21,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 21:30:21,503 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 4 states. [2020-09-24 21:30:22,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:30:22,060 INFO L93 Difference]: Finished difference Result 414 states and 503 transitions. [2020-09-24 21:30:22,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 21:30:22,062 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-09-24 21:30:22,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:30:22,079 INFO L225 Difference]: With dead ends: 414 [2020-09-24 21:30:22,079 INFO L226 Difference]: Without dead ends: 209 [2020-09-24 21:30:22,086 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:30:22,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-09-24 21:30:22,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2020-09-24 21:30:22,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-09-24 21:30:22,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 235 transitions. [2020-09-24 21:30:22,154 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 235 transitions. Word has length 51 [2020-09-24 21:30:22,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:30:22,154 INFO L479 AbstractCegarLoop]: Abstraction has 209 states and 235 transitions. [2020-09-24 21:30:22,154 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 21:30:22,154 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 235 transitions. [2020-09-24 21:30:22,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-09-24 21:30:22,158 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:30:22,158 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, 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, 1, 1] [2020-09-24 21:30:22,159 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:30:22,159 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:30:22,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:30:22,159 INFO L82 PathProgramCache]: Analyzing trace with hash -16125544, now seen corresponding path program 1 times [2020-09-24 21:30:22,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:30:22,160 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1206708489] [2020-09-24 21:30:22,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:30:22,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 21:30:22,246 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 21:30:22,252 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 21:30:22,262 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:30:22,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 09:30:22 BoogieIcfgContainer [2020-09-24 21:30:22,302 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 21:30:22,307 INFO L168 Benchmark]: Toolchain (without parser) took 3237.58 ms. Allocated memory was 139.5 MB in the beginning and 235.9 MB in the end (delta: 96.5 MB). Free memory was 100.5 MB in the beginning and 121.5 MB in the end (delta: -21.0 MB). Peak memory consumption was 75.4 MB. Max. memory is 7.1 GB. [2020-09-24 21:30:22,309 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 139.5 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 21:30:22,310 INFO L168 Benchmark]: CACSL2BoogieTranslator took 508.69 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 99.8 MB in the beginning and 177.7 MB in the end (delta: -77.9 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. [2020-09-24 21:30:22,311 INFO L168 Benchmark]: Boogie Preprocessor took 77.40 ms. Allocated memory is still 202.4 MB. Free memory was 177.7 MB in the beginning and 175.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-09-24 21:30:22,313 INFO L168 Benchmark]: RCFGBuilder took 850.29 ms. Allocated memory is still 202.4 MB. Free memory was 174.4 MB in the beginning and 127.8 MB in the end (delta: 46.6 MB). Peak memory consumption was 46.6 MB. Max. memory is 7.1 GB. [2020-09-24 21:30:22,314 INFO L168 Benchmark]: TraceAbstraction took 1791.96 ms. Allocated memory was 202.4 MB in the beginning and 235.9 MB in the end (delta: 33.6 MB). Free memory was 127.8 MB in the beginning and 121.5 MB in the end (delta: 6.3 MB). Peak memory consumption was 39.9 MB. Max. memory is 7.1 GB. [2020-09-24 21:30:22,325 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 139.5 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 508.69 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 99.8 MB in the beginning and 177.7 MB in the end (delta: -77.9 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 77.40 ms. Allocated memory is still 202.4 MB. Free memory was 177.7 MB in the beginning and 175.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 850.29 ms. Allocated memory is still 202.4 MB. Free memory was 174.4 MB in the beginning and 127.8 MB in the end (delta: 46.6 MB). Peak memory consumption was 46.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1791.96 ms. Allocated memory was 202.4 MB in the beginning and 235.9 MB in the end (delta: 33.6 MB). Free memory was 127.8 MB in the beginning and 121.5 MB in the end (delta: 6.3 MB). Peak memory consumption was 39.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 186]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 41, overapproximation of someUnaryDOUBLEoperation at line 17, overapproximation of someBinaryArithmeticDOUBLEoperation at line 42, overapproximation of bitwiseAnd at line 38, overapproximation of someBinaryDOUBLEComparisonOperation at line 185, overapproximation of bitwiseXor at line 37. Possible FailurePath: [L15-L18] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L177] double y = -1.0 / 0.0; [L178] double x = __VERIFIER_nondet_double(); [L180] CALL isfinite_double(x) [L161] __int32_t hx; [L163] ieee_double_shape_type gh_u; [L164] gh_u.value = (x) [L165] EXPR gh_u.parts.msw [L165] (hx) = gh_u.parts.msw [L167] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); [L180] RET isfinite_double(x) [L180] COND TRUE isfinite_double(x) [L182] CALL, EXPR fmod_double(x, y) [L21] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L22] __uint32_t lx, ly, lz; [L25] ieee_double_shape_type ew_u; [L26] ew_u.value = (x) [L27] EXPR ew_u.parts.msw [L27] (hx) = ew_u.parts.msw [L28] EXPR ew_u.parts.lsw [L28] (lx) = ew_u.parts.lsw [L31] ieee_double_shape_type ew_u; [L32] ew_u.value = (y) [L33] EXPR ew_u.parts.msw [L33] (hy) = ew_u.parts.msw [L34] EXPR ew_u.parts.lsw [L34] (ly) = ew_u.parts.lsw [L36] sx = hx & 0x80000000 [L37] hx ^= sx [L38] hy &= 0x7fffffff [L40-L41] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L42] return (x * y) / (x * y); [L182] RET, EXPR fmod_double(x, y) [L182] double res = fmod_double(x, y); [L185] COND TRUE res != x [L186] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 216 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 239 SDtfs, 37 SDslu, 182 SDs, 0 SdLazy, 260 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=216occurred 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, 0.6s InterpolantComputationTime, 139 NumberOfCodeBlocks, 139 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 50 ConstructedInterpolants, 0 QuantifiedInterpolants, 4750 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...