/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_0663a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 23:16:56,967 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 23:16:56,970 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 23:16:56,993 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 23:16:56,994 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 23:16:56,998 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 23:16:56,999 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 23:16:57,001 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 23:16:57,006 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 23:16:57,008 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 23:16:57,009 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 23:16:57,010 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 23:16:57,010 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 23:16:57,011 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 23:16:57,012 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 23:16:57,015 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 23:16:57,016 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 23:16:57,018 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 23:16:57,021 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 23:16:57,025 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 23:16:57,030 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 23:16:57,031 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 23:16:57,033 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 23:16:57,035 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 23:16:57,039 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 23:16:57,040 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 23:16:57,040 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 23:16:57,041 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 23:16:57,042 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 23:16:57,043 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 23:16:57,043 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 23:16:57,044 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 23:16:57,044 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 23:16:57,045 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 23:16:57,046 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 23:16:57,046 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 23:16:57,047 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 23:16:57,047 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 23:16:57,048 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 23:16:57,048 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 23:16:57,059 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 23:16:57,060 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 23:16:57,107 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 23:16:57,107 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 23:16:57,111 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 23:16:57,111 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 23:16:57,111 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 23:16:57,112 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 23:16:57,112 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 23:16:57,112 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 23:16:57,112 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 23:16:57,112 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 23:16:57,112 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 23:16:57,113 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 23:16:57,113 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 23:16:57,114 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 23:16:57,114 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 23:16:57,114 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 23:16:57,114 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 23:16:57,114 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 23:16:57,115 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 23:16:57,115 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 23:16:57,115 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 23:16:57,115 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:16:57,115 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 23:16:57,116 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 23:16:57,116 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 23:16:57,116 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 23:16:57,116 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 23:16:57,117 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 23:16:57,117 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 23:16:57,118 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 23:16:57,440 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 23:16:57,459 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 23:16:57,463 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 23:16:57,467 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 23:16:57,468 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 23:16:57,468 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0663a.c [2020-10-14 23:16:57,548 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/17930d593/a36d60c664e345b5bfa06751342ae802/FLAG0c46d036a [2020-10-14 23:16:58,024 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 23:16:58,025 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_0663a.c [2020-10-14 23:16:58,034 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/17930d593/a36d60c664e345b5bfa06751342ae802/FLAG0c46d036a [2020-10-14 23:16:58,369 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/17930d593/a36d60c664e345b5bfa06751342ae802 [2020-10-14 23:16:58,380 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 23:16:58,382 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 23:16:58,385 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 23:16:58,386 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 23:16:58,389 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 23:16:58,390 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:16:58" (1/1) ... [2020-10-14 23:16:58,394 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25989b4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:16:58, skipping insertion in model container [2020-10-14 23:16:58,395 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:16:58" (1/1) ... [2020-10-14 23:16:58,403 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 23:16:58,452 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 23:16:58,706 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:16:58,714 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 23:16:58,864 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:16:58,890 INFO L208 MainTranslator]: Completed translation [2020-10-14 23:16:58,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:16:58 WrapperNode [2020-10-14 23:16:58,891 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 23:16:58,892 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 23:16:58,892 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 23:16:58,892 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 23:16:58,906 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:16:58" (1/1) ... [2020-10-14 23:16:58,906 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:16:58" (1/1) ... [2020-10-14 23:16:58,920 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:16:58" (1/1) ... [2020-10-14 23:16:58,921 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:16:58" (1/1) ... [2020-10-14 23:16:58,947 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:16:58" (1/1) ... [2020-10-14 23:16:58,967 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:16:58" (1/1) ... [2020-10-14 23:16:58,973 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:16:58" (1/1) ... [2020-10-14 23:16:58,978 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 23:16:58,979 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 23:16:58,979 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 23:16:58,979 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 23:16:58,980 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:16:58" (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 23:16:59,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 23:16:59,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 23:16:59,038 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2020-10-14 23:16:59,038 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_double [2020-10-14 23:16:59,038 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_atan2 [2020-10-14 23:16:59,038 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 23:16:59,038 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 23:16:59,038 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-10-14 23:16:59,038 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2020-10-14 23:16:59,039 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 23:16:59,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-14 23:16:59,039 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 23:16:59,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 23:16:59,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 23:16:59,039 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-14 23:16:59,040 INFO L130 BoogieDeclarations]: Found specification of procedure atan_double [2020-10-14 23:16:59,040 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_atan2 [2020-10-14 23:16:59,040 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 23:16:59,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 23:16:59,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-14 23:16:59,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 23:16:59,676 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 23:16:59,676 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-14 23:16:59,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:16:59 BoogieIcfgContainer [2020-10-14 23:16:59,685 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 23:16:59,689 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 23:16:59,690 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 23:16:59,693 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 23:16:59,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:16:58" (1/3) ... [2020-10-14 23:16:59,695 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b52aeaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:16:59, skipping insertion in model container [2020-10-14 23:16:59,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:16:58" (2/3) ... [2020-10-14 23:16:59,696 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b52aeaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:16:59, skipping insertion in model container [2020-10-14 23:16:59,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:16:59" (3/3) ... [2020-10-14 23:16:59,698 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_0663a.c [2020-10-14 23:16:59,710 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 23:16:59,721 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 23:16:59,736 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 23:16:59,769 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 23:16:59,769 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 23:16:59,769 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 23:16:59,770 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 23:16:59,770 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 23:16:59,770 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 23:16:59,771 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 23:16:59,771 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 23:16:59,801 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states. [2020-10-14 23:16:59,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-14 23:16:59,808 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:16:59,809 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:16:59,809 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:16:59,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:16:59,814 INFO L82 PathProgramCache]: Analyzing trace with hash -1380022172, now seen corresponding path program 1 times [2020-10-14 23:16:59,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:16:59,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [417777700] [2020-10-14 23:16:59,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:16:59,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:17:00,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:17:00,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:17:00,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:17:00,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 23:17:00,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:17:00,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 272 [2020-10-14 23:17:00,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:17:00,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:17:00,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:17:00,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 23:17:00,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:17:00,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 23:17:00,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:17:00,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:17:00,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:17:00,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:17:00,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:17:00,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:17:00,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-14 23:17:00,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:17:00,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:17:00,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:17:00,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:17:00,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:17:00,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 23:17:00,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 23:17:00,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:17:00,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:17:00,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:17:00,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:17:00,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 23:17:00,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:17:00,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 23:17:00,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:17:00,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:17:00,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:17:00,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-14 23:17:00,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:17:00,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:17:00,544 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 23:17:00,545 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [417777700] [2020-10-14 23:17:00,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:17:00,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 23:17:00,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985457853] [2020-10-14 23:17:00,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 23:17:00,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:17:00,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 23:17:00,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 23:17:00,572 INFO L87 Difference]: Start difference. First operand 103 states. Second operand 4 states. [2020-10-14 23:17:01,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:17:01,056 INFO L93 Difference]: Finished difference Result 200 states and 317 transitions. [2020-10-14 23:17:01,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:17:01,058 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-10-14 23:17:01,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:17:01,072 INFO L225 Difference]: With dead ends: 200 [2020-10-14 23:17:01,073 INFO L226 Difference]: Without dead ends: 98 [2020-10-14 23:17:01,078 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 23:17:01,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-14 23:17:01,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2020-10-14 23:17:01,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-14 23:17:01,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 137 transitions. [2020-10-14 23:17:01,138 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 137 transitions. Word has length 19 [2020-10-14 23:17:01,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:17:01,139 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 137 transitions. [2020-10-14 23:17:01,139 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 23:17:01,139 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 137 transitions. [2020-10-14 23:17:01,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-14 23:17:01,141 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:17:01,141 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] [2020-10-14 23:17:01,141 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 23:17:01,141 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:17:01,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:17:01,142 INFO L82 PathProgramCache]: Analyzing trace with hash 959017453, now seen corresponding path program 1 times [2020-10-14 23:17:01,142 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:17:01,143 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [712806175] [2020-10-14 23:17:01,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:17:01,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-14 23:17:01,191 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-14 23:17:01,192 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-14 23:17:01,197 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 23:17:01,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 11:17:01 BoogieIcfgContainer [2020-10-14 23:17:01,218 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 23:17:01,222 INFO L168 Benchmark]: Toolchain (without parser) took 2838.16 ms. Allocated memory was 148.4 MB in the beginning and 232.8 MB in the end (delta: 84.4 MB). Free memory was 102.9 MB in the beginning and 121.7 MB in the end (delta: -18.8 MB). Peak memory consumption was 65.7 MB. Max. memory is 7.1 GB. [2020-10-14 23:17:01,223 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 148.4 MB. Free memory was 121.7 MB in the beginning and 121.3 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. [2020-10-14 23:17:01,224 INFO L168 Benchmark]: CACSL2BoogieTranslator took 506.05 ms. Allocated memory was 148.4 MB in the beginning and 203.9 MB in the end (delta: 55.6 MB). Free memory was 102.9 MB in the beginning and 178.6 MB in the end (delta: -75.7 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. [2020-10-14 23:17:01,225 INFO L168 Benchmark]: Boogie Preprocessor took 86.55 ms. Allocated memory is still 203.9 MB. Free memory was 178.6 MB in the beginning and 174.9 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 7.1 GB. [2020-10-14 23:17:01,226 INFO L168 Benchmark]: RCFGBuilder took 706.77 ms. Allocated memory is still 203.9 MB. Free memory was 174.9 MB in the beginning and 132.0 MB in the end (delta: 42.9 MB). Peak memory consumption was 42.9 MB. Max. memory is 7.1 GB. [2020-10-14 23:17:01,227 INFO L168 Benchmark]: TraceAbstraction took 1528.52 ms. Allocated memory was 203.9 MB in the beginning and 232.8 MB in the end (delta: 28.8 MB). Free memory was 131.1 MB in the beginning and 121.7 MB in the end (delta: 9.4 MB). Peak memory consumption was 38.3 MB. Max. memory is 7.1 GB. [2020-10-14 23:17:01,231 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 148.4 MB. Free memory was 121.7 MB in the beginning and 121.3 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 506.05 ms. Allocated memory was 148.4 MB in the beginning and 203.9 MB in the end (delta: 55.6 MB). Free memory was 102.9 MB in the beginning and 178.6 MB in the end (delta: -75.7 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 86.55 ms. Allocated memory is still 203.9 MB. Free memory was 178.6 MB in the beginning and 174.9 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 706.77 ms. Allocated memory is still 203.9 MB. Free memory was 174.9 MB in the beginning and 132.0 MB in the end (delta: 42.9 MB). Peak memory consumption was 42.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1528.52 ms. Allocated memory was 203.9 MB in the beginning and 232.8 MB in the end (delta: 28.8 MB). Free memory was 131.1 MB in the beginning and 121.7 MB in the end (delta: 9.4 MB). Peak memory consumption was 38.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 260]: 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 251, overapproximation of bitwiseAnd at line 160, overapproximation of someBinaryArithmeticDOUBLEoperation at line 163, overapproximation of someBinaryDOUBLEComparisonOperation at line 259. 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; [L251] double x = -0.0; [L252] double y = __VERIFIER_nondet_double(); [L254] COND TRUE y > 0.0 [L256] 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; [L256] RET, EXPR __ieee754_atan2(y, x) [L256] double res = __ieee754_atan2(y, x); [L259] COND TRUE res != pi_o_2 [L260] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 103 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 139 SDtfs, 16 SDslu, 125 SDs, 0 SdLazy, 139 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=103occurred 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, 0.5s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 1512 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...