/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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_0681a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 14:26:06,707 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 14:26:06,711 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 14:26:06,768 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 14:26:06,768 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 14:26:06,775 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 14:26:06,777 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 14:26:06,781 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 14:26:06,784 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 14:26:06,790 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 14:26:06,791 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 14:26:06,793 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 14:26:06,793 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 14:26:06,796 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 14:26:06,798 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 14:26:06,800 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 14:26:06,801 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 14:26:06,804 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 14:26:06,811 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 14:26:06,818 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 14:26:06,820 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 14:26:06,821 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 14:26:06,823 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 14:26:06,825 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 14:26:06,844 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 14:26:06,845 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 14:26:06,845 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 14:26:06,846 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 14:26:06,849 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 14:26:06,850 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 14:26:06,851 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 14:26:06,852 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 14:26:06,853 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 14:26:06,854 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 14:26:06,855 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 14:26:06,855 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 14:26:06,856 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 14:26:06,856 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 14:26:06,856 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 14:26:06,857 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 14:26:06,858 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 14:26:06,865 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 [2020-10-28 14:26:06,910 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 14:26:06,910 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 14:26:06,914 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 14:26:06,914 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 14:26:06,914 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 14:26:06,915 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 14:26:06,915 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 14:26:06,915 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 14:26:06,915 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 14:26:06,915 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 14:26:06,916 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 14:26:06,917 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 14:26:06,917 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 14:26:06,917 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 14:26:06,917 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 14:26:06,917 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 14:26:06,917 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 14:26:06,918 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 14:26:06,918 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 14:26:06,918 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 14:26:06,918 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 14:26:06,918 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:26:06,919 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 14:26:06,919 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 14:26:06,919 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 14:26:06,919 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 14:26:06,919 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 14:26:06,919 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 14:26:06,920 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 14:26:06,920 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 14:26:07,310 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 14:26:07,347 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 14:26:07,351 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 14:26:07,352 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 14:26:07,353 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 14:26:07,354 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0681a.c [2020-10-28 14:26:07,438 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e0ec47d97/1daf84fa6cd842a4b0e9d38c74ac5f2a/FLAGb1af182a2 [2020-10-28 14:26:08,143 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 14:26:08,144 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_0681a.c [2020-10-28 14:26:08,153 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e0ec47d97/1daf84fa6cd842a4b0e9d38c74ac5f2a/FLAGb1af182a2 [2020-10-28 14:26:08,478 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e0ec47d97/1daf84fa6cd842a4b0e9d38c74ac5f2a [2020-10-28 14:26:08,483 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 14:26:08,489 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 14:26:08,492 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 14:26:08,492 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 14:26:08,498 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 14:26:08,499 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:26:08" (1/1) ... [2020-10-28 14:26:08,503 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33743a43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:08, skipping insertion in model container [2020-10-28 14:26:08,505 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:26:08" (1/1) ... [2020-10-28 14:26:08,513 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 14:26:08,565 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 14:26:08,777 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:26:08,788 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 14:26:08,850 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:26:08,883 INFO L208 MainTranslator]: Completed translation [2020-10-28 14:26:08,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:08 WrapperNode [2020-10-28 14:26:08,883 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 14:26:08,885 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 14:26:08,885 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 14:26:08,885 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 14:26:08,899 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:08" (1/1) ... [2020-10-28 14:26:08,899 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:08" (1/1) ... [2020-10-28 14:26:08,914 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:08" (1/1) ... [2020-10-28 14:26:08,915 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:08" (1/1) ... [2020-10-28 14:26:08,964 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:08" (1/1) ... [2020-10-28 14:26:08,975 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:08" (1/1) ... [2020-10-28 14:26:08,985 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:08" (1/1) ... [2020-10-28 14:26:08,996 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 14:26:08,997 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 14:26:08,997 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 14:26:08,997 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 14:26:09,000 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:08" (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 [2020-10-28 14:26:09,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 14:26:09,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 14:26:09,090 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 14:26:09,090 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2020-10-28 14:26:09,090 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_double [2020-10-28 14:26:09,091 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_atan2 [2020-10-28 14:26:09,091 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-10-28 14:26:09,091 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 14:26:09,091 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 14:26:09,092 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 14:26:09,093 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 14:26:09,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 14:26:09,093 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-10-28 14:26:09,093 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2020-10-28 14:26:09,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-28 14:26:09,094 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 14:26:09,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 14:26:09,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 14:26:09,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-28 14:26:09,095 INFO L130 BoogieDeclarations]: Found specification of procedure atan_double [2020-10-28 14:26:09,095 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_atan2 [2020-10-28 14:26:09,096 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-10-28 14:26:09,096 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 14:26:09,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 14:26:09,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 14:26:09,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-28 14:26:09,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 14:26:10,018 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 14:26:10,018 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-10-28 14:26:10,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:26:10 BoogieIcfgContainer [2020-10-28 14:26:10,020 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 14:26:10,022 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 14:26:10,022 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 14:26:10,025 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 14:26:10,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 02:26:08" (1/3) ... [2020-10-28 14:26:10,027 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b3caf8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:26:10, skipping insertion in model container [2020-10-28 14:26:10,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:08" (2/3) ... [2020-10-28 14:26:10,027 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b3caf8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:26:10, skipping insertion in model container [2020-10-28 14:26:10,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:26:10" (3/3) ... [2020-10-28 14:26:10,029 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0681a.c [2020-10-28 14:26:10,040 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 14:26:10,045 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 14:26:10,059 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 14:26:10,089 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 14:26:10,089 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 14:26:10,089 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 14:26:10,089 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 14:26:10,090 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 14:26:10,090 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 14:26:10,090 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 14:26:10,090 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 14:26:10,109 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states. [2020-10-28 14:26:10,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-28 14:26:10,116 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:26:10,117 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] [2020-10-28 14:26:10,117 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:26:10,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:26:10,123 INFO L82 PathProgramCache]: Analyzing trace with hash 760112060, now seen corresponding path program 1 times [2020-10-28 14:26:10,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:26:10,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [765262457] [2020-10-28 14:26:10,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:26:10,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:26:10,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:26:10,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:26:10,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:26:10,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 14:26:10,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:26:10,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 321 [2020-10-28 14:26:10,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:26:10,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:26:10,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:26:10,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-28 14:26:10,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:26:10,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 14:26:10,818 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-28 14:26:10,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:26:10,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:26:10,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:26:10,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:26:10,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:26:10,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:26:10,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 14:26:10,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:26:10,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:26:10,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:26:10,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:26:10,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:26:10,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:26:10,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:26:10,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:26:10,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:26:10,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:26:10,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:26:10,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 14:26:10,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:26:10,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 14:26:10,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:26:10,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:26:10,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:26:10,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:26:10,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:26:10,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:26:10,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:26:10,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [765262457] [2020-10-28 14:26:11,001 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:26:11,001 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 14:26:11,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131053250] [2020-10-28 14:26:11,011 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 14:26:11,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:26:11,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 14:26:11,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:26:11,032 INFO L87 Difference]: Start difference. First operand 114 states. Second operand 4 states. [2020-10-28 14:26:11,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:26:11,568 INFO L93 Difference]: Finished difference Result 217 states and 341 transitions. [2020-10-28 14:26:11,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 14:26:11,570 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-10-28 14:26:11,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:26:11,582 INFO L225 Difference]: With dead ends: 217 [2020-10-28 14:26:11,582 INFO L226 Difference]: Without dead ends: 107 [2020-10-28 14:26:11,587 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 [2020-10-28 14:26:11,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-28 14:26:11,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2020-10-28 14:26:11,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-28 14:26:11,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 147 transitions. [2020-10-28 14:26:11,643 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 147 transitions. Word has length 20 [2020-10-28 14:26:11,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:26:11,644 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 147 transitions. [2020-10-28 14:26:11,644 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 14:26:11,644 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 147 transitions. [2020-10-28 14:26:11,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-28 14:26:11,645 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:26:11,646 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] [2020-10-28 14:26:11,646 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 14:26:11,646 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:26:11,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:26:11,647 INFO L82 PathProgramCache]: Analyzing trace with hash 1505631205, now seen corresponding path program 1 times [2020-10-28 14:26:11,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:26:11,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [209951411] [2020-10-28 14:26:11,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:26:11,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-28 14:26:11,699 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-28 14:26:11,700 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-28 14:26:11,705 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 14:26:11,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 02:26:11 BoogieIcfgContainer [2020-10-28 14:26:11,733 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 14:26:11,737 INFO L168 Benchmark]: Toolchain (without parser) took 3249.99 ms. Allocated memory was 153.1 MB in the beginning and 200.3 MB in the end (delta: 47.2 MB). Free memory was 128.0 MB in the beginning and 98.8 MB in the end (delta: 29.2 MB). Peak memory consumption was 77.8 MB. Max. memory is 8.0 GB. [2020-10-28 14:26:11,739 INFO L168 Benchmark]: CDTParser took 0.67 ms. Allocated memory is still 153.1 MB. Free memory is still 126.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 14:26:11,740 INFO L168 Benchmark]: CACSL2BoogieTranslator took 392.29 ms. Allocated memory is still 153.1 MB. Free memory was 127.2 MB in the beginning and 112.4 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-10-28 14:26:11,741 INFO L168 Benchmark]: Boogie Preprocessor took 111.28 ms. Allocated memory is still 153.1 MB. Free memory was 112.4 MB in the beginning and 109.4 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-10-28 14:26:11,743 INFO L168 Benchmark]: RCFGBuilder took 1023.87 ms. Allocated memory is still 153.1 MB. Free memory was 109.3 MB in the beginning and 100.8 MB in the end (delta: 8.4 MB). Peak memory consumption was 14.5 MB. Max. memory is 8.0 GB. [2020-10-28 14:26:11,744 INFO L168 Benchmark]: TraceAbstraction took 1711.02 ms. Allocated memory was 153.1 MB in the beginning and 200.3 MB in the end (delta: 47.2 MB). Free memory was 100.8 MB in the beginning and 98.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 49.8 MB. Max. memory is 8.0 GB. [2020-10-28 14:26:11,762 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.67 ms. Allocated memory is still 153.1 MB. Free memory is still 126.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 392.29 ms. Allocated memory is still 153.1 MB. Free memory was 127.2 MB in the beginning and 112.4 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 111.28 ms. Allocated memory is still 153.1 MB. Free memory was 112.4 MB in the beginning and 109.4 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1023.87 ms. Allocated memory is still 153.1 MB. Free memory was 109.3 MB in the beginning and 100.8 MB in the end (delta: 8.4 MB). Peak memory consumption was 14.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1711.02 ms. Allocated memory was 153.1 MB in the beginning and 200.3 MB in the end (delta: 47.2 MB). Free memory was 100.8 MB in the beginning and 98.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 49.8 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 54, 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) == 0 [L269] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L270] CALL reach_error() [L3] __assert_fail("0", "double_req_bl_0681a.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: 1.6s, 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, 0.7s 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...