/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/float_req_bl_1122b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 01:04:03,977 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 01:04:03,981 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 01:04:04,023 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 01:04:04,024 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 01:04:04,025 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 01:04:04,027 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 01:04:04,029 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 01:04:04,031 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 01:04:04,032 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 01:04:04,034 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 01:04:04,035 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 01:04:04,035 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 01:04:04,037 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 01:04:04,038 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 01:04:04,039 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 01:04:04,040 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 01:04:04,041 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 01:04:04,043 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 01:04:04,045 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 01:04:04,047 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 01:04:04,049 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 01:04:04,050 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 01:04:04,051 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 01:04:04,054 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 01:04:04,054 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 01:04:04,055 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 01:04:04,056 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 01:04:04,056 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 01:04:04,057 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 01:04:04,058 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 01:04:04,058 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 01:04:04,059 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 01:04:04,060 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 01:04:04,061 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 01:04:04,062 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 01:04:04,062 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 01:04:04,063 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 01:04:04,063 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 01:04:04,064 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 01:04:04,065 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 01:04:04,066 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 01:04:04,102 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 01:04:04,104 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 01:04:04,107 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 01:04:04,107 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 01:04:04,107 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 01:04:04,107 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 01:04:04,108 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 01:04:04,108 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 01:04:04,110 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 01:04:04,110 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 01:04:04,111 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 01:04:04,111 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 01:04:04,112 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 01:04:04,112 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 01:04:04,112 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 01:04:04,112 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 01:04:04,112 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 01:04:04,113 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 01:04:04,113 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 01:04:04,113 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 01:04:04,113 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 01:04:04,113 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:04:04,114 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 01:04:04,114 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 01:04:04,114 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 01:04:04,114 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 01:04:04,115 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 01:04:04,115 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 01:04:04,115 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 01:04:04,115 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 01:04:04,522 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 01:04:04,550 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 01:04:04,553 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 01:04:04,555 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 01:04:04,556 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 01:04:04,557 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1122b.c [2020-10-27 01:04:04,632 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/42497379e/0963f243784648bb9a22bbc7da035351/FLAG31c8629ed [2020-10-27 01:04:05,372 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 01:04:05,373 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1122b.c [2020-10-27 01:04:05,384 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/42497379e/0963f243784648bb9a22bbc7da035351/FLAG31c8629ed [2020-10-27 01:04:05,690 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/42497379e/0963f243784648bb9a22bbc7da035351 [2020-10-27 01:04:05,696 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 01:04:05,704 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 01:04:05,706 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 01:04:05,706 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 01:04:05,710 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 01:04:05,711 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:04:05" (1/1) ... [2020-10-27 01:04:05,715 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fcb6a42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:05, skipping insertion in model container [2020-10-27 01:04:05,715 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:04:05" (1/1) ... [2020-10-27 01:04:05,724 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 01:04:05,745 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 01:04:05,955 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:04:05,966 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 01:04:06,008 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:04:06,030 INFO L208 MainTranslator]: Completed translation [2020-10-27 01:04:06,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:06 WrapperNode [2020-10-27 01:04:06,031 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 01:04:06,032 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 01:04:06,032 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 01:04:06,033 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 01:04:06,047 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:06" (1/1) ... [2020-10-27 01:04:06,047 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:06" (1/1) ... [2020-10-27 01:04:06,059 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:06" (1/1) ... [2020-10-27 01:04:06,060 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:06" (1/1) ... [2020-10-27 01:04:06,074 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:06" (1/1) ... [2020-10-27 01:04:06,087 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:06" (1/1) ... [2020-10-27 01:04:06,090 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:06" (1/1) ... [2020-10-27 01:04:06,095 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 01:04:06,096 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 01:04:06,096 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 01:04:06,097 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 01:04:06,098 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:06" (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 01:04:06,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 01:04:06,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 01:04:06,195 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 01:04:06,196 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-10-27 01:04:06,197 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2020-10-27 01:04:06,197 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 01:04:06,197 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 01:04:06,198 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 01:04:06,198 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 01:04:06,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 01:04:06,199 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-27 01:04:06,199 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-10-27 01:04:06,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-27 01:04:06,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 01:04:06,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 01:04:06,201 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-27 01:04:06,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 01:04:06,201 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2020-10-27 01:04:06,201 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 01:04:06,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 01:04:06,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 01:04:06,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-27 01:04:06,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 01:04:07,046 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 01:04:07,046 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-10-27 01:04:07,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:04:07 BoogieIcfgContainer [2020-10-27 01:04:07,048 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 01:04:07,050 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 01:04:07,051 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 01:04:07,054 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 01:04:07,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 01:04:05" (1/3) ... [2020-10-27 01:04:07,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bf178b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:04:07, skipping insertion in model container [2020-10-27 01:04:07,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:06" (2/3) ... [2020-10-27 01:04:07,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bf178b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:04:07, skipping insertion in model container [2020-10-27 01:04:07,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:04:07" (3/3) ... [2020-10-27 01:04:07,058 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1122b.c [2020-10-27 01:04:07,071 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 01:04:07,077 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 01:04:07,092 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 01:04:07,122 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 01:04:07,122 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 01:04:07,122 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 01:04:07,122 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 01:04:07,123 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 01:04:07,123 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 01:04:07,123 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 01:04:07,123 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 01:04:07,143 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states. [2020-10-27 01:04:07,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-27 01:04:07,150 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:04:07,151 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:04:07,152 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:04:07,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:04:07,158 INFO L82 PathProgramCache]: Analyzing trace with hash 859309759, now seen corresponding path program 1 times [2020-10-27 01:04:07,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:04:07,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1184184528] [2020-10-27 01:04:07,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:04:07,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:04:07,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:07,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:07,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:04:07,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-27 01:04:07,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:04:07,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 280 [2020-10-27 01:04:07,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:04:07,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:04:07,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 01:04:07,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:04:07,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 01:04:07,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:04:07,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:04:07,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:07,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:04:07,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:04:07,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:04:07,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 01:04:07,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:04:07,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:04:07,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:04:07,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:04:07,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:04:07,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:04:07,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:04:07,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:07,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:07,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:04:07,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 01:04:07,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:04:07,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-27 01:04:07,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:04:07,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:04:07,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 01:04:07,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:04:07,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:04:07,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 01:04:07,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:04:07,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:07,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:04:07,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:04:07,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:04:07,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 01:04:07,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:04:07,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:04:07,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:04:07,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:04:07,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 01:04:07,931 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 01:04:07,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1184184528] [2020-10-27 01:04:07,938 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:04:07,938 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 01:04:07,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703544745] [2020-10-27 01:04:07,946 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 01:04:07,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:04:07,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 01:04:07,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 01:04:07,969 INFO L87 Difference]: Start difference. First operand 59 states. Second operand 4 states. [2020-10-27 01:04:08,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:04:08,295 INFO L93 Difference]: Finished difference Result 107 states and 164 transitions. [2020-10-27 01:04:08,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 01:04:08,297 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-10-27 01:04:08,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:04:08,307 INFO L225 Difference]: With dead ends: 107 [2020-10-27 01:04:08,307 INFO L226 Difference]: Without dead ends: 52 [2020-10-27 01:04:08,311 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 01:04:08,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-27 01:04:08,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-10-27 01:04:08,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-27 01:04:08,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 67 transitions. [2020-10-27 01:04:08,361 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 67 transitions. Word has length 23 [2020-10-27 01:04:08,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:04:08,362 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 67 transitions. [2020-10-27 01:04:08,362 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 01:04:08,362 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 67 transitions. [2020-10-27 01:04:08,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-27 01:04:08,364 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:04:08,364 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:04:08,364 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 01:04:08,364 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:04:08,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:04:08,365 INFO L82 PathProgramCache]: Analyzing trace with hash 853024034, now seen corresponding path program 1 times [2020-10-27 01:04:08,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:04:08,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2086256593] [2020-10-27 01:04:08,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:04:08,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 01:04:08,423 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 01:04:08,424 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 01:04:08,432 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 01:04:08,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 01:04:08 BoogieIcfgContainer [2020-10-27 01:04:08,456 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 01:04:08,463 INFO L168 Benchmark]: Toolchain (without parser) took 2759.85 ms. Allocated memory was 125.8 MB in the beginning and 153.1 MB in the end (delta: 27.3 MB). Free memory was 101.0 MB in the beginning and 93.4 MB in the end (delta: 7.5 MB). Peak memory consumption was 35.1 MB. Max. memory is 8.0 GB. [2020-10-27 01:04:08,464 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 125.8 MB. Free memory is still 87.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 01:04:08,465 INFO L168 Benchmark]: CACSL2BoogieTranslator took 325.43 ms. Allocated memory is still 125.8 MB. Free memory was 100.3 MB in the beginning and 88.7 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-10-27 01:04:08,467 INFO L168 Benchmark]: Boogie Preprocessor took 62.73 ms. Allocated memory is still 125.8 MB. Free memory was 88.7 MB in the beginning and 86.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-27 01:04:08,468 INFO L168 Benchmark]: RCFGBuilder took 952.38 ms. Allocated memory was 125.8 MB in the beginning and 153.1 MB in the end (delta: 27.3 MB). Free memory was 86.5 MB in the beginning and 122.4 MB in the end (delta: -36.0 MB). Peak memory consumption was 16.7 MB. Max. memory is 8.0 GB. [2020-10-27 01:04:08,470 INFO L168 Benchmark]: TraceAbstraction took 1406.49 ms. Allocated memory is still 153.1 MB. Free memory was 121.9 MB in the beginning and 93.4 MB in the end (delta: 28.5 MB). Peak memory consumption was 27.9 MB. Max. memory is 8.0 GB. [2020-10-27 01:04:08,480 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 125.8 MB. Free memory is still 87.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 325.43 ms. Allocated memory is still 125.8 MB. Free memory was 100.3 MB in the beginning and 88.7 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 62.73 ms. Allocated memory is still 125.8 MB. Free memory was 88.7 MB in the beginning and 86.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 952.38 ms. Allocated memory was 125.8 MB in the beginning and 153.1 MB in the end (delta: 27.3 MB). Free memory was 86.5 MB in the beginning and 122.4 MB in the end (delta: -36.0 MB). Peak memory consumption was 16.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1406.49 ms. Allocated memory is still 153.1 MB. Free memory was 121.9 MB in the beginning and 93.4 MB in the end (delta: 28.5 MB). Peak memory consumption was 27.9 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 someBinaryFLOATComparisonOperation at line 110, overapproximation of someUnaryDOUBLEoperation at line 16, overapproximation of bitwiseAnd at line 32, overapproximation of someBinaryArithmeticFLOAToperation at line 37, overapproximation of bitwiseXor at line 33. Possible FailurePath: [L14-L17] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L119] float x = -1.0f / 0.0f; [L120] float y = __VERIFIER_nondet_float(); [L121] CALL, EXPR fmod_float(x, y) [L20] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L23] ieee_float_shape_type gf_u; [L24] gf_u.value = (x) [L25] EXPR gf_u.word [L25] (hx) = gf_u.word [L28] ieee_float_shape_type gf_u; [L29] gf_u.value = (y) [L30] EXPR gf_u.word [L30] (hy) = gf_u.word [L32] sx = hx & 0x80000000 [L33] hx ^= sx [L34] hy &= 0x7fffffff [L36] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) [L37] return (x * y) / (x * y); [L121] RET, EXPR fmod_float(x, y) [L121] float res = fmod_float(x, y); [L124] CALL, EXPR isnan_float(res) [L110] return x != x; [L124] RET, EXPR isnan_float(res) [L124] COND TRUE !isnan_float(res) [L125] CALL reach_error() [L3] __assert_fail("0", "float_req_bl_1122b.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 59 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 69 SDtfs, 10 SDslu, 54 SDs, 0 SdLazy, 70 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=59occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 1606 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...