/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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=SHALLOWEST --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 language data_model -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_0681b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 01:01:35,655 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 01:01:35,658 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 01:01:35,694 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 01:01:35,695 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 01:01:35,696 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 01:01:35,698 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 01:01:35,704 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 01:01:35,706 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 01:01:35,707 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 01:01:35,711 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 01:01:35,712 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 01:01:35,713 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 01:01:35,714 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 01:01:35,715 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 01:01:35,717 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 01:01:35,718 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 01:01:35,719 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 01:01:35,721 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 01:01:35,723 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 01:01:35,725 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 01:01:35,734 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 01:01:35,735 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 01:01:35,736 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 01:01:35,739 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 01:01:35,740 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 01:01:35,740 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 01:01:35,742 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 01:01:35,742 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 01:01:35,743 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 01:01:35,744 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 01:01:35,745 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 01:01:35,746 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 01:01:35,747 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 01:01:35,748 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 01:01:35,748 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 01:01:35,749 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 01:01:35,750 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 01:01:35,750 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 01:01:35,751 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 01:01:35,752 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 01:01:35,753 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 [2020-10-27 01:01:35,805 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 01:01:35,805 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 01:01:35,807 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 01:01:35,809 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 01:01:35,809 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 01:01:35,809 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 01:01:35,810 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 01:01:35,810 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 01:01:35,811 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 01:01:35,811 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 01:01:35,811 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 01:01:35,811 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 01:01:35,811 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 01:01:35,812 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 01:01:35,812 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 01:01:35,813 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 01:01:35,813 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 01:01:35,814 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 01:01:35,814 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 01:01:35,814 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 01:01:35,814 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 01:01:35,814 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:01:35,815 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 01:01:35,815 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 01:01:35,815 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 01:01:35,816 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 01:01:35,816 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 01:01:35,816 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 01:01:35,816 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 01:01:35,816 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 01:01:36,315 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 01:01:36,367 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 01:01:36,371 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 01:01:36,373 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 01:01:36,377 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 01:01:36,378 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0681b.c [2020-10-27 01:01:36,465 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8222afc2a/9a2103bd7228487083bd2b28d93398f8/FLAG9bbc9f96f [2020-10-27 01:01:37,199 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 01:01:37,200 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_0681b.c [2020-10-27 01:01:37,209 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8222afc2a/9a2103bd7228487083bd2b28d93398f8/FLAG9bbc9f96f [2020-10-27 01:01:37,525 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8222afc2a/9a2103bd7228487083bd2b28d93398f8 [2020-10-27 01:01:37,530 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 01:01:37,539 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 01:01:37,543 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 01:01:37,543 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 01:01:37,547 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 01:01:37,548 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:01:37" (1/1) ... [2020-10-27 01:01:37,554 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40a943d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:01:37, skipping insertion in model container [2020-10-27 01:01:37,555 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:01:37" (1/1) ... [2020-10-27 01:01:37,568 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 01:01:37,633 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 01:01:38,026 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:01:38,039 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 01:01:38,101 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:01:38,127 INFO L208 MainTranslator]: Completed translation [2020-10-27 01:01:38,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:01:38 WrapperNode [2020-10-27 01:01:38,127 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 01:01:38,129 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 01:01:38,129 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 01:01:38,129 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 01:01:38,145 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:01:38" (1/1) ... [2020-10-27 01:01:38,146 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:01:38" (1/1) ... [2020-10-27 01:01:38,161 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:01:38" (1/1) ... [2020-10-27 01:01:38,162 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:01:38" (1/1) ... [2020-10-27 01:01:38,193 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:01:38" (1/1) ... [2020-10-27 01:01:38,204 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:01:38" (1/1) ... [2020-10-27 01:01:38,209 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:01:38" (1/1) ... [2020-10-27 01:01:38,215 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 01:01:38,216 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 01:01:38,216 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 01:01:38,216 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 01:01:38,217 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:01:38" (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 [2020-10-27 01:01:38,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 01:01:38,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 01:01:38,313 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 01:01:38,314 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2020-10-27 01:01:38,314 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_double [2020-10-27 01:01:38,315 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_atan2 [2020-10-27 01:01:38,315 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-10-27 01:01:38,315 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 01:01:38,316 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 01:01:38,316 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 01:01:38,317 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 01:01:38,317 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 01:01:38,318 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-10-27 01:01:38,318 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2020-10-27 01:01:38,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-27 01:01:38,319 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 01:01:38,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 01:01:38,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 01:01:38,320 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-27 01:01:38,320 INFO L130 BoogieDeclarations]: Found specification of procedure atan_double [2020-10-27 01:01:38,320 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_atan2 [2020-10-27 01:01:38,321 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-10-27 01:01:38,321 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 01:01:38,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 01:01:38,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 01:01:38,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-27 01:01:38,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 01:01:39,183 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 01:01:39,184 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-10-27 01:01:39,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:01:39 BoogieIcfgContainer [2020-10-27 01:01:39,186 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 01:01:39,188 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 01:01:39,188 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 01:01:39,192 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 01:01:39,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 01:01:37" (1/3) ... [2020-10-27 01:01:39,193 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fdea2e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:01:39, skipping insertion in model container [2020-10-27 01:01:39,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:01:38" (2/3) ... [2020-10-27 01:01:39,194 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fdea2e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:01:39, skipping insertion in model container [2020-10-27 01:01:39,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:01:39" (3/3) ... [2020-10-27 01:01:39,195 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0681b.c [2020-10-27 01:01:39,208 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 01:01:39,213 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 01:01:39,227 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 01:01:39,258 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 01:01:39,259 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 01:01:39,259 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 01:01:39,259 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 01:01:39,259 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 01:01:39,259 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 01:01:39,259 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 01:01:39,260 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 01:01:39,280 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states. [2020-10-27 01:01:39,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-27 01:01:39,286 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:01:39,287 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] [2020-10-27 01:01:39,288 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:01:39,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:01:39,294 INFO L82 PathProgramCache]: Analyzing trace with hash 760112060, now seen corresponding path program 1 times [2020-10-27 01:01:39,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:01:39,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [942511087] [2020-10-27 01:01:39,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:01:39,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:01:39,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:01:39,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:01:39,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:01:39,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 01:01:39,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:01:39,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 443 [2020-10-27 01:01:39,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:01:39,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:01:39,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 01:01:39,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:01:39,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 01:01:40,138 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-27 01:01:40,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:01:40,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:01:40,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:01:40,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:01:40,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:01:40,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:01:40,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-27 01:01:40,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:01:40,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:01:40,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:01:40,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:01:40,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:01:40,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:01:40,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:01:40,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:01:40,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:01:40,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:01:40,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 01:01:40,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:01:40,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 01:01:40,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:01:40,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:01:40,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 01:01:40,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:01:40,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:01:40,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:01:40,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [942511087] [2020-10-27 01:01:40,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:01:40,321 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 01:01:40,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421843775] [2020-10-27 01:01:40,328 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 01:01:40,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:01:40,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 01:01:40,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 01:01:40,349 INFO L87 Difference]: Start difference. First operand 114 states. Second operand 4 states. [2020-10-27 01:01:40,482 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-10-27 01:01:40,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:01:40,891 INFO L93 Difference]: Finished difference Result 217 states and 341 transitions. [2020-10-27 01:01:40,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 01:01:40,893 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-10-27 01:01:40,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:01:40,904 INFO L225 Difference]: With dead ends: 217 [2020-10-27 01:01:40,904 INFO L226 Difference]: Without dead ends: 107 [2020-10-27 01:01:40,909 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 01:01:40,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-27 01:01:40,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2020-10-27 01:01:40,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-27 01:01:40,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 147 transitions. [2020-10-27 01:01:40,965 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 147 transitions. Word has length 20 [2020-10-27 01:01:40,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:01:40,966 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 147 transitions. [2020-10-27 01:01:40,966 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 01:01:40,966 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 147 transitions. [2020-10-27 01:01:40,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-27 01:01:40,967 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:01:40,967 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] [2020-10-27 01:01:40,968 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 01:01:40,968 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:01:40,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:01:40,969 INFO L82 PathProgramCache]: Analyzing trace with hash 1505631205, now seen corresponding path program 1 times [2020-10-27 01:01:40,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:01:40,969 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [717986854] [2020-10-27 01:01:40,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:01:41,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 01:01:41,022 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 01:01:41,022 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 01:01:41,027 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 01:01:41,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 01:01:41 BoogieIcfgContainer [2020-10-27 01:01:41,049 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 01:01:41,051 INFO L168 Benchmark]: Toolchain (without parser) took 3519.01 ms. Allocated memory is still 160.4 MB. Free memory was 136.3 MB in the beginning and 74.5 MB in the end (delta: 61.9 MB). Peak memory consumption was 63.2 MB. Max. memory is 8.0 GB. [2020-10-27 01:01:41,052 INFO L168 Benchmark]: CDTParser took 0.77 ms. Allocated memory is still 125.8 MB. Free memory was 101.4 MB in the beginning and 101.3 MB in the end (delta: 121.4 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 01:01:41,053 INFO L168 Benchmark]: CACSL2BoogieTranslator took 585.44 ms. Allocated memory is still 160.4 MB. Free memory was 135.5 MB in the beginning and 120.4 MB in the end (delta: 15.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-10-27 01:01:41,054 INFO L168 Benchmark]: Boogie Preprocessor took 86.27 ms. Allocated memory is still 160.4 MB. Free memory was 120.4 MB in the beginning and 117.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-10-27 01:01:41,055 INFO L168 Benchmark]: RCFGBuilder took 970.28 ms. Allocated memory is still 160.4 MB. Free memory was 117.3 MB in the beginning and 106.3 MB in the end (delta: 11.0 MB). Peak memory consumption was 12.2 MB. Max. memory is 8.0 GB. [2020-10-27 01:01:41,055 INFO L168 Benchmark]: TraceAbstraction took 1861.26 ms. Allocated memory is still 160.4 MB. Free memory was 106.2 MB in the beginning and 74.5 MB in the end (delta: 31.7 MB). Peak memory consumption was 32.2 MB. Max. memory is 8.0 GB. [2020-10-27 01:01:41,059 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.77 ms. Allocated memory is still 125.8 MB. Free memory was 101.4 MB in the beginning and 101.3 MB in the end (delta: 121.4 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 585.44 ms. Allocated memory is still 160.4 MB. Free memory was 135.5 MB in the beginning and 120.4 MB in the end (delta: 15.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 86.27 ms. Allocated memory is still 160.4 MB. Free memory was 120.4 MB in the beginning and 117.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 970.28 ms. Allocated memory is still 160.4 MB. Free memory was 117.3 MB in the beginning and 106.3 MB in the end (delta: 11.0 MB). Peak memory consumption was 12.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1861.26 ms. Allocated memory is still 160.4 MB. Free memory was 106.2 MB in the beginning and 74.5 MB in the end (delta: 31.7 MB). Peak memory consumption was 32.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 164, overapproximation of someUnaryDOUBLEoperation at line 266, overapproximation of bitwiseAnd at line 162, overapproximation of someBinaryArithmeticDOUBLEoperation at line 165, overapproximation of someBinaryDOUBLEComparisonOperation at line 269. Possible FailurePath: [L39-L44] static const double atanhi_atan[] = { 4.63647609000806093515e-01, 7.85398163397448278999e-01, 9.82793723247329054082e-01, 1.57079632679489655800e+00, }; [L46-L51] static const double atanlo_atan[] = { 2.26987774529616870924e-17, 3.06161699786838301793e-17, 1.39033110312309984516e-17, 6.12323399573676603587e-17, }; [L53-L60] 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, }; [L62-L64] 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; [L141-L142] static const double tiny_atan2 = 1.0e-300, zero_atan2 = 0.0, pi_lo_atan2 = 1.2246467991473531772E-16; [L265] double x = 0.0; [L266] double y = -0.0; [L267] CALL, EXPR __ieee754_atan2(y, x) [L145] double z; [L146] __int32_t k, m, hx, hy, ix, iy; [L147] __uint32_t lx, ly; [L150] ieee_double_shape_type ew_u; [L151] ew_u.value = (x) [L152] EXPR ew_u.parts.msw [L152] (hx) = ew_u.parts.msw [L153] EXPR ew_u.parts.lsw [L153] (lx) = ew_u.parts.lsw [L155] ix = hx & 0x7fffffff [L157] ieee_double_shape_type ew_u; [L158] ew_u.value = (y) [L159] EXPR ew_u.parts.msw [L159] (hy) = ew_u.parts.msw [L160] EXPR ew_u.parts.lsw [L160] (ly) = ew_u.parts.lsw [L162] iy = hy & 0x7fffffff [L163-L164] COND TRUE ((ix | ((lx | -lx) >> 31)) > 0x7ff00000) || ((iy | ((ly | -ly) >> 31)) > 0x7ff00000) [L165] return x + y; [L267] RET, EXPR __ieee754_atan2(y, x) [L267] double res = __ieee754_atan2(y, x); [L269] EXPR res == -0.0 && __signbit_double(res) == 1 [L269] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L270] CALL reach_error() [L3] __assert_fail("0", "double_req_bl_0681b.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 114 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 146 SDtfs, 12 SDslu, 133 SDs, 0 SdLazy, 144 SolverSat, 16 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, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=114occurred 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, 0.8s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 1957 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...