/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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_0686a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:46:29,546 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:46:29,549 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:46:29,587 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:46:29,588 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:46:29,595 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:46:29,596 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:46:29,599 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:46:29,602 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:46:29,605 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:46:29,606 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:46:29,607 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:46:29,607 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:46:29,610 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:46:29,612 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:46:29,614 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:46:29,615 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:46:29,616 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:46:29,617 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:46:29,627 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:46:29,631 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:46:29,631 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:46:29,632 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:46:29,633 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:46:29,635 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:46:29,635 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:46:29,635 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:46:29,636 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:46:29,636 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:46:29,637 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:46:29,637 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:46:29,638 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:46:29,639 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:46:29,639 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:46:29,640 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:46:29,640 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:46:29,641 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:46:29,641 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:46:29,641 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:46:29,642 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:46:29,643 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:46:29,643 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 04:46:29,664 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:46:29,665 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:46:29,666 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:46:29,666 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:46:29,666 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:46:29,666 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:46:29,667 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:46:29,667 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:46:29,667 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:46:29,667 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:46:29,667 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:46:29,667 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:46:29,668 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:46:29,668 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:46:29,668 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:46:29,668 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:46:29,668 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:46:29,669 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:46:29,669 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:46:29,669 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:46:29,669 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:46:29,669 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:46:29,669 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:46:29,670 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:46:29,670 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:46:29,670 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:46:29,670 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:46:29,670 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:46:29,671 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:46:29,671 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 04:46:29,941 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:46:29,958 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:46:29,963 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:46:29,965 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:46:29,965 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:46:29,966 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0686a.c [2020-10-14 04:46:30,020 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ad4524651/21601137aedd43ceaa37f77905887268/FLAG1f2745b71 [2020-10-14 04:46:30,437 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:46:30,438 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_0686a.c [2020-10-14 04:46:30,447 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ad4524651/21601137aedd43ceaa37f77905887268/FLAG1f2745b71 [2020-10-14 04:46:30,813 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ad4524651/21601137aedd43ceaa37f77905887268 [2020-10-14 04:46:30,822 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:46:30,823 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:46:30,824 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:46:30,824 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:46:30,828 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:46:30,829 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:46:30" (1/1) ... [2020-10-14 04:46:30,831 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c0d3285 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:46:30, skipping insertion in model container [2020-10-14 04:46:30,832 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:46:30" (1/1) ... [2020-10-14 04:46:30,839 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:46:30,870 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:46:31,319 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:46:31,328 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:46:31,381 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:46:31,406 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:46:31,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:46:31 WrapperNode [2020-10-14 04:46:31,406 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:46:31,407 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:46:31,407 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:46:31,407 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:46:31,419 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:46:31" (1/1) ... [2020-10-14 04:46:31,420 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:46:31" (1/1) ... [2020-10-14 04:46:31,434 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:46:31" (1/1) ... [2020-10-14 04:46:31,434 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:46:31" (1/1) ... [2020-10-14 04:46:31,460 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:46:31" (1/1) ... [2020-10-14 04:46:31,470 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:46:31" (1/1) ... [2020-10-14 04:46:31,473 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:46:31" (1/1) ... [2020-10-14 04:46:31,478 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:46:31,479 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:46:31,479 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:46:31,479 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:46:31,482 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:46:31" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:46:31,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:46:31,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:46:31,544 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2020-10-14 04:46:31,544 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_double [2020-10-14 04:46:31,544 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_atan2 [2020-10-14 04:46:31,544 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:46:31,544 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:46:31,544 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-10-14 04:46:31,545 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2020-10-14 04:46:31,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 04:46:31,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-14 04:46:31,545 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 04:46:31,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 04:46:31,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 04:46:31,546 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-14 04:46:31,546 INFO L130 BoogieDeclarations]: Found specification of procedure atan_double [2020-10-14 04:46:31,546 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_atan2 [2020-10-14 04:46:31,546 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:46:31,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:46:31,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-14 04:46:31,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:46:32,168 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:46:32,168 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-14 04:46:32,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:46:32 BoogieIcfgContainer [2020-10-14 04:46:32,174 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:46:32,175 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:46:32,175 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:46:32,179 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:46:32,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:46:30" (1/3) ... [2020-10-14 04:46:32,180 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d58d879 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:46:32, skipping insertion in model container [2020-10-14 04:46:32,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:46:31" (2/3) ... [2020-10-14 04:46:32,181 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d58d879 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:46:32, skipping insertion in model container [2020-10-14 04:46:32,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:46:32" (3/3) ... [2020-10-14 04:46:32,182 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_0686a.c [2020-10-14 04:46:32,193 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:46:32,201 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 04:46:32,215 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 04:46:32,240 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:46:32,240 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:46:32,241 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:46:32,241 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:46:32,241 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:46:32,242 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:46:32,242 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:46:32,242 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:46:32,263 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states. [2020-10-14 04:46:32,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-14 04:46:32,268 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:46:32,269 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:46:32,270 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:46:32,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:46:32,274 INFO L82 PathProgramCache]: Analyzing trace with hash 947216650, now seen corresponding path program 1 times [2020-10-14 04:46:32,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:46:32,282 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [415038504] [2020-10-14 04:46:32,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:46:32,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:46:32,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:46:32,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:46:32,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:46:32,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 04:46:32,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:46:32,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 270 [2020-10-14 04:46:32,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:46:32,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:46:32,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:46:32,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 04:46:32,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:46:32,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 04:46:32,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:46:32,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:46:32,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:46:32,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:46:32,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:46:32,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:46:32,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 04:46:32,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:46:32,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:46:32,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:46:32,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:46:32,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:46:32,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:46:32,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 04:46:32,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:46:32,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:46:32,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:46:32,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:46:32,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 04:46:32,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:46:32,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 04:46:32,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:46:32,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:46:32,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:46:32,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:46:32,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:46:32,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:46:32,907 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 04:46:32,907 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [415038504] [2020-10-14 04:46:32,909 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:46:32,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 04:46:32,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549607750] [2020-10-14 04:46:32,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:46:32,916 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:46:32,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:46:32,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:46:32,932 INFO L87 Difference]: Start difference. First operand 101 states. Second operand 4 states. [2020-10-14 04:46:33,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:46:33,309 INFO L93 Difference]: Finished difference Result 194 states and 310 transitions. [2020-10-14 04:46:33,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 04:46:33,311 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-10-14 04:46:33,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:46:33,325 INFO L225 Difference]: With dead ends: 194 [2020-10-14 04:46:33,325 INFO L226 Difference]: Without dead ends: 97 [2020-10-14 04:46:33,330 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:46:33,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-14 04:46:33,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-10-14 04:46:33,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-14 04:46:33,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 136 transitions. [2020-10-14 04:46:33,398 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 136 transitions. Word has length 18 [2020-10-14 04:46:33,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:46:33,399 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 136 transitions. [2020-10-14 04:46:33,399 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:46:33,400 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 136 transitions. [2020-10-14 04:46:33,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-14 04:46:33,401 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:46:33,401 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] [2020-10-14 04:46:33,402 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:46:33,402 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:46:33,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:46:33,403 INFO L82 PathProgramCache]: Analyzing trace with hash -246249165, now seen corresponding path program 1 times [2020-10-14 04:46:33,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:46:33,404 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [984404574] [2020-10-14 04:46:33,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:46:33,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-14 04:46:33,457 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-14 04:46:33,457 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-14 04:46:33,463 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:46:33,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 04:46:33 BoogieIcfgContainer [2020-10-14 04:46:33,484 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 04:46:33,487 INFO L168 Benchmark]: Toolchain (without parser) took 2662.61 ms. Allocated memory was 147.3 MB in the beginning and 232.8 MB in the end (delta: 85.5 MB). Free memory was 103.2 MB in the beginning and 122.6 MB in the end (delta: -19.4 MB). Peak memory consumption was 66.0 MB. Max. memory is 7.1 GB. [2020-10-14 04:46:33,488 INFO L168 Benchmark]: CDTParser took 0.45 ms. Allocated memory is still 147.3 MB. Free memory was 121.9 MB in the beginning and 121.5 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-10-14 04:46:33,489 INFO L168 Benchmark]: CACSL2BoogieTranslator took 582.51 ms. Allocated memory was 147.3 MB in the beginning and 205.0 MB in the end (delta: 57.7 MB). Free memory was 102.8 MB in the beginning and 177.9 MB in the end (delta: -75.0 MB). Peak memory consumption was 19.3 MB. Max. memory is 7.1 GB. [2020-10-14 04:46:33,490 INFO L168 Benchmark]: Boogie Preprocessor took 71.46 ms. Allocated memory is still 205.0 MB. Free memory was 177.9 MB in the beginning and 174.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. [2020-10-14 04:46:33,491 INFO L168 Benchmark]: RCFGBuilder took 695.26 ms. Allocated memory is still 205.0 MB. Free memory was 174.7 MB in the beginning and 131.6 MB in the end (delta: 43.1 MB). Peak memory consumption was 43.1 MB. Max. memory is 7.1 GB. [2020-10-14 04:46:33,492 INFO L168 Benchmark]: TraceAbstraction took 1308.79 ms. Allocated memory was 205.0 MB in the beginning and 232.8 MB in the end (delta: 27.8 MB). Free memory was 130.7 MB in the beginning and 122.6 MB in the end (delta: 8.1 MB). Peak memory consumption was 35.8 MB. Max. memory is 7.1 GB. [2020-10-14 04:46:33,496 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45 ms. Allocated memory is still 147.3 MB. Free memory was 121.9 MB in the beginning and 121.5 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 582.51 ms. Allocated memory was 147.3 MB in the beginning and 205.0 MB in the end (delta: 57.7 MB). Free memory was 102.8 MB in the beginning and 177.9 MB in the end (delta: -75.0 MB). Peak memory consumption was 19.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 71.46 ms. Allocated memory is still 205.0 MB. Free memory was 177.9 MB in the beginning and 174.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 695.26 ms. Allocated memory is still 205.0 MB. Free memory was 174.7 MB in the beginning and 131.6 MB in the end (delta: 43.1 MB). Peak memory consumption was 43.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1308.79 ms. Allocated memory was 205.0 MB in the beginning and 232.8 MB in the end (delta: 27.8 MB). Free memory was 130.7 MB in the beginning and 122.6 MB in the end (delta: 8.1 MB). Peak memory consumption was 35.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 256]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 162, overapproximation of someUnaryDOUBLEoperation at line 52, overapproximation of someBinaryArithmeticDOUBLEoperation at line 163, overapproximation of bitwiseAnd at line 160, overapproximation of someBinaryDOUBLEComparisonOperation at line 255. Possible FailurePath: [L37-L42] static const double atanhi_atan[] = { 4.63647609000806093515e-01, 7.85398163397448278999e-01, 9.82793723247329054082e-01, 1.57079632679489655800e+00, }; [L44-L49] static const double atanlo_atan[] = { 2.26987774529616870924e-17, 3.06161699786838301793e-17, 1.39033110312309984516e-17, 6.12323399573676603587e-17, }; [L51-L58] static const double aT_atan[] = { 3.33333333333329318027e-01, -1.99999999998764832476e-01, 1.42857142725034663711e-01, -1.11111104054623557880e-01, 9.09088713343650656196e-02, -7.69187620504482999495e-02, 6.66107313738753120669e-02, -5.83357013379057348645e-02, 4.97687799461593236017e-02, -3.65315727442169155270e-02, 1.62858201153657823623e-02, }; [L60-L62] static const double one_atan = 1.0, pi_o_4 = 7.8539816339744827900E-01, pi_o_2 = 1.5707963267948965580E+00, pi = 3.1415926535897931160E+00, huge_atan = 1.0e300; [L139-L140] static const double tiny_atan2 = 1.0e-300, zero_atan2 = 0.0, pi_lo_atan2 = 1.2246467991473531772E-16; [L250] double x = 1.0 / 0.0; [L251] double y = 1.0 / 0.0; [L253] CALL, EXPR __ieee754_atan2(y, x) [L143] double z; [L144] __int32_t k, m, hx, hy, ix, iy; [L145] __uint32_t lx, ly; [L148] ieee_double_shape_type ew_u; [L149] ew_u.value = (x) [L150] EXPR ew_u.parts.msw [L150] (hx) = ew_u.parts.msw [L151] EXPR ew_u.parts.lsw [L151] (lx) = ew_u.parts.lsw [L153] ix = hx & 0x7fffffff [L155] ieee_double_shape_type ew_u; [L156] ew_u.value = (y) [L157] EXPR ew_u.parts.msw [L157] (hy) = ew_u.parts.msw [L158] EXPR ew_u.parts.lsw [L158] (ly) = ew_u.parts.lsw [L160] iy = hy & 0x7fffffff [L161-L162] COND TRUE ((ix | ((lx | -lx) >> 31)) > 0x7ff00000) || ((iy | ((ly | -ly) >> 31)) > 0x7ff00000) [L163] return x + y; [L253] RET, EXPR __ieee754_atan2(y, x) [L253] double res = __ieee754_atan2(y, x); [L255] COND TRUE res != pi_o_4 [L256] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 101 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 136 SDtfs, 8 SDslu, 126 SDs, 0 SdLazy, 136 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=101occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 1411 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...