/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 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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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 -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1092d.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 23:18:01,463 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 23:18:01,466 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 23:18:01,505 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 23:18:01,506 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 23:18:01,513 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 23:18:01,515 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 23:18:01,518 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 23:18:01,520 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 23:18:01,524 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 23:18:01,525 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 23:18:01,526 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 23:18:01,526 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 23:18:01,528 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 23:18:01,530 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 23:18:01,532 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 23:18:01,533 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 23:18:01,535 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 23:18:01,536 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 23:18:01,544 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 23:18:01,546 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 23:18:01,547 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 23:18:01,548 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 23:18:01,549 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 23:18:01,561 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 23:18:01,564 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 23:18:01,564 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 23:18:01,565 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 23:18:01,566 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 23:18:01,570 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 23:18:01,570 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 23:18:01,571 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 23:18:01,573 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 23:18:01,574 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 23:18:01,575 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 23:18:01,575 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 23:18:01,576 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 23:18:01,576 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 23:18:01,576 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 23:18:01,577 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 23:18:01,577 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 23:18:01,578 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 [2020-10-14 23:18:01,599 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 23:18:01,599 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 23:18:01,600 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 23:18:01,601 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 23:18:01,601 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 23:18:01,601 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 23:18:01,601 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 23:18:01,602 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 23:18:01,602 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 23:18:01,602 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 23:18:01,602 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 23:18:01,602 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 23:18:01,603 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 23:18:01,603 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 23:18:01,603 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 23:18:01,603 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 23:18:01,603 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 23:18:01,604 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 23:18:01,604 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 23:18:01,604 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 23:18:01,604 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 23:18:01,604 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:18:01,605 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 23:18:01,605 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 23:18:01,605 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 23:18:01,605 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 23:18:01,605 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 23:18:01,606 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 23:18:01,606 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 23:18:01,606 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 -> 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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 23:18:01,888 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 23:18:01,900 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 23:18:01,903 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 23:18:01,905 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 23:18:01,905 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 23:18:01,906 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1092d.c [2020-10-14 23:18:01,961 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8deedbcc6/a467906aa5854ea3822a6b538035f7f0/FLAGcc52c196d [2020-10-14 23:18:02,406 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 23:18:02,407 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1092d.c [2020-10-14 23:18:02,415 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8deedbcc6/a467906aa5854ea3822a6b538035f7f0/FLAGcc52c196d [2020-10-14 23:18:02,697 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8deedbcc6/a467906aa5854ea3822a6b538035f7f0 [2020-10-14 23:18:02,706 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 23:18:02,708 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 23:18:02,709 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 23:18:02,709 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 23:18:02,713 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 23:18:02,714 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:18:02" (1/1) ... [2020-10-14 23:18:02,716 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@232e9dae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:02, skipping insertion in model container [2020-10-14 23:18:02,717 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:18:02" (1/1) ... [2020-10-14 23:18:02,724 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 23:18:02,744 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 23:18:02,972 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:18:02,976 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 23:18:03,014 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:18:03,126 INFO L208 MainTranslator]: Completed translation [2020-10-14 23:18:03,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:03 WrapperNode [2020-10-14 23:18:03,128 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 23:18:03,129 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 23:18:03,129 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 23:18:03,129 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 23:18:03,141 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:03" (1/1) ... [2020-10-14 23:18:03,142 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:03" (1/1) ... [2020-10-14 23:18:03,159 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:03" (1/1) ... [2020-10-14 23:18:03,160 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:03" (1/1) ... [2020-10-14 23:18:03,173 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:03" (1/1) ... [2020-10-14 23:18:03,179 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:03" (1/1) ... [2020-10-14 23:18:03,181 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:03" (1/1) ... [2020-10-14 23:18:03,184 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 23:18:03,185 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 23:18:03,185 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 23:18:03,185 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 23:18:03,186 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:03" (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 [2020-10-14 23:18:03,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 23:18:03,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 23:18:03,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_double [2020-10-14 23:18:03,237 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_double [2020-10-14 23:18:03,237 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 23:18:03,238 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 23:18:03,238 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_double [2020-10-14 23:18:03,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 23:18:03,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-14 23:18:03,238 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 23:18:03,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 23:18:03,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 23:18:03,239 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-14 23:18:03,239 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_double [2020-10-14 23:18:03,239 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 23:18:03,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 23:18:03,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 23:18:03,594 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 23:18:03,595 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-14 23:18:03,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:18:03 BoogieIcfgContainer [2020-10-14 23:18:03,600 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 23:18:03,602 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 23:18:03,602 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 23:18:03,606 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 23:18:03,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:18:02" (1/3) ... [2020-10-14 23:18:03,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71891a0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:18:03, skipping insertion in model container [2020-10-14 23:18:03,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:03" (2/3) ... [2020-10-14 23:18:03,608 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71891a0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:18:03, skipping insertion in model container [2020-10-14 23:18:03,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:18:03" (3/3) ... [2020-10-14 23:18:03,609 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1092d.c [2020-10-14 23:18:03,622 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 23:18:03,630 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 23:18:03,646 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 23:18:03,683 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 23:18:03,685 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 23:18:03,685 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 23:18:03,685 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 23:18:03,686 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 23:18:03,686 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 23:18:03,686 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 23:18:03,686 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 23:18:03,720 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2020-10-14 23:18:03,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-14 23:18:03,727 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:18:03,728 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] [2020-10-14 23:18:03,728 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:18:03,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:18:03,733 INFO L82 PathProgramCache]: Analyzing trace with hash -661893902, now seen corresponding path program 1 times [2020-10-14 23:18:03,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:18:03,741 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [644693298] [2020-10-14 23:18:03,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:18:03,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:18:03,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:18:03,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:18:04,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:18:04,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 23:18:04,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:18:04,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-10-14 23:18:04,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:18:04,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:18:04,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:18:04,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-14 23:18:04,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:18:04,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 23:18:04,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:18:04,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:18:04,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:18:04,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:18:04,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:18:04,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:18:04,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 23:18:04,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:18:04,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:18:04,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:18:04,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:18:04,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:18:04,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 11 [2020-10-14 23:18:04,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:18:04,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:18:04,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:18:04,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:18:04,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:18:04,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 23:18:04,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:18:04,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 23:18:04,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:18:04,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:18:04,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:18:04,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:18:04,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:18:04,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:18:04,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-14 23:18:04,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:18:04,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:18:04,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:18:04,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:18:04,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:18:04,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 23:18:04,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:18:04,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:18:04,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:18:04,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-14 23:18:04,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:18:04,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:18:04,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:18:04,338 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [644693298] [2020-10-14 23:18:04,340 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:18:04,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 23:18:04,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449362499] [2020-10-14 23:18:04,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 23:18:04,347 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:18:04,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 23:18:04,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 23:18:04,363 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 4 states. [2020-10-14 23:18:04,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:18:04,593 INFO L93 Difference]: Finished difference Result 92 states and 135 transitions. [2020-10-14 23:18:04,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 23:18:04,595 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-10-14 23:18:04,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:18:04,605 INFO L225 Difference]: With dead ends: 92 [2020-10-14 23:18:04,605 INFO L226 Difference]: Without dead ends: 46 [2020-10-14 23:18:04,609 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 23:18:04,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-14 23:18:04,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-10-14 23:18:04,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-14 23:18:04,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 60 transitions. [2020-10-14 23:18:04,652 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 60 transitions. Word has length 25 [2020-10-14 23:18:04,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:18:04,653 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 60 transitions. [2020-10-14 23:18:04,653 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 23:18:04,653 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 60 transitions. [2020-10-14 23:18:04,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-14 23:18:04,655 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:18:04,655 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:18:04,655 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 23:18:04,655 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:18:04,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:18:04,656 INFO L82 PathProgramCache]: Analyzing trace with hash -1235447049, now seen corresponding path program 1 times [2020-10-14 23:18:04,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:18:04,657 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1756146221] [2020-10-14 23:18:04,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:18:04,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-14 23:18:04,712 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-14 23:18:04,712 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-14 23:18:04,717 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 23:18:04,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 11:18:04 BoogieIcfgContainer [2020-10-14 23:18:04,736 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 23:18:04,739 INFO L168 Benchmark]: Toolchain (without parser) took 2030.48 ms. Allocated memory was 148.9 MB in the beginning and 231.7 MB in the end (delta: 82.8 MB). Free memory was 105.1 MB in the beginning and 188.8 MB in the end (delta: -83.7 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-14 23:18:04,740 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 148.9 MB. Free memory was 123.5 MB in the beginning and 123.0 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-10-14 23:18:04,741 INFO L168 Benchmark]: CACSL2BoogieTranslator took 419.23 ms. Allocated memory was 148.9 MB in the beginning and 206.0 MB in the end (delta: 57.1 MB). Free memory was 105.1 MB in the beginning and 184.4 MB in the end (delta: -79.2 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. [2020-10-14 23:18:04,742 INFO L168 Benchmark]: Boogie Preprocessor took 55.98 ms. Allocated memory is still 206.0 MB. Free memory was 184.4 MB in the beginning and 181.5 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-10-14 23:18:04,743 INFO L168 Benchmark]: RCFGBuilder took 414.95 ms. Allocated memory is still 206.0 MB. Free memory was 181.5 MB in the beginning and 157.5 MB in the end (delta: 24.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. [2020-10-14 23:18:04,744 INFO L168 Benchmark]: TraceAbstraction took 1134.95 ms. Allocated memory was 206.0 MB in the beginning and 231.7 MB in the end (delta: 25.7 MB). Free memory was 156.6 MB in the beginning and 188.8 MB in the end (delta: -32.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-14 23:18:04,748 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 148.9 MB. Free memory was 123.5 MB in the beginning and 123.0 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 419.23 ms. Allocated memory was 148.9 MB in the beginning and 206.0 MB in the end (delta: 57.1 MB). Free memory was 105.1 MB in the beginning and 184.4 MB in the end (delta: -79.2 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 55.98 ms. Allocated memory is still 206.0 MB. Free memory was 184.4 MB in the beginning and 181.5 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 414.95 ms. Allocated memory is still 206.0 MB. Free memory was 181.5 MB in the beginning and 157.5 MB in the end (delta: 24.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1134.95 ms. Allocated memory was 206.0 MB in the beginning and 231.7 MB in the end (delta: 25.7 MB). Free memory was 156.6 MB in the beginning and 188.8 MB in the end (delta: -32.3 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 108]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftRight at line 38, overapproximation of bitwiseOr at line 90, overapproximation of someBinaryArithmeticDOUBLEoperation at line 103, overapproximation of bitwiseAnd at line 89. Possible FailurePath: [L14] static const double huge_ceil = 1.0e300; [L103] double x = -1.0 / 0.0; [L104] CALL, EXPR ceil_double(x) [L17] __int32_t i0, i1, j0; [L18] __uint32_t i, j; [L20] ieee_double_shape_type ew_u; [L21] ew_u.value = (x) [L22] EXPR ew_u.parts.msw [L22] (i0) = ew_u.parts.msw [L23] EXPR ew_u.parts.lsw [L23] (i1) = ew_u.parts.lsw [L25] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff [L26] COND TRUE j0 < 20 [L27] COND FALSE !(j0 < 0) [L38] i = (0x000fffff) >> j0 [L39] COND TRUE ((i0 & i) | i1) == 0 [L40] return x; [L104] RET, EXPR ceil_double(x) [L104] double res = ceil_double(x); [L107] CALL, EXPR isinf_double(res) [L82] __int32_t hx, lx; [L84] ieee_double_shape_type ew_u; [L85] ew_u.value = (x) [L86] EXPR ew_u.parts.msw [L86] (hx) = ew_u.parts.msw [L87] EXPR ew_u.parts.lsw [L87] (lx) = ew_u.parts.lsw [L89] hx &= 0x7fffffff [L90] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L91] hx = 0x7ff00000 - hx [L92] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L107] RET, EXPR isinf_double(res) [L107] COND TRUE !isinf_double(res) [L108] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 50 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 58 SDtfs, 53 SDslu, 5 SDs, 0 SdLazy, 63 SolverSat, 10 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, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50occurred 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, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 1440 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...