/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/float_req_bl_1122b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 14:28:41,000 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 14:28:41,002 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 14:28:41,040 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 14:28:41,041 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 14:28:41,042 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 14:28:41,044 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 14:28:41,047 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 14:28:41,049 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 14:28:41,051 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 14:28:41,052 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 14:28:41,054 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 14:28:41,054 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 14:28:41,056 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 14:28:41,057 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 14:28:41,059 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 14:28:41,062 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 14:28:41,063 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 14:28:41,068 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 14:28:41,091 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 14:28:41,098 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 14:28:41,100 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 14:28:41,103 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 14:28:41,105 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 14:28:41,113 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 14:28:41,116 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 14:28:41,117 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 14:28:41,118 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 14:28:41,121 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 14:28:41,122 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 14:28:41,122 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 14:28:41,125 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 14:28:41,126 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 14:28:41,127 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 14:28:41,129 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 14:28:41,129 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 14:28:41,131 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 14:28:41,131 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 14:28:41,131 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 14:28:41,132 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 14:28:41,133 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 14:28:41,134 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 14:28:41,183 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 14:28:41,184 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 14:28:41,186 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 14:28:41,186 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 14:28:41,186 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 14:28:41,187 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 14:28:41,187 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 14:28:41,187 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 14:28:41,187 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 14:28:41,188 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 14:28:41,188 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 14:28:41,188 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 14:28:41,188 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 14:28:41,189 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 14:28:41,189 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 14:28:41,189 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 14:28:41,190 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 14:28:41,190 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 14:28:41,190 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 14:28:41,190 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 14:28:41,191 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 14:28:41,191 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:28:41,191 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 14:28:41,191 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 14:28:41,192 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 14:28:41,192 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 14:28:41,192 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 14:28:41,192 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 14:28:41,193 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 14:28:41,193 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 14:28:41,572 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 14:28:41,626 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 14:28:41,632 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 14:28:41,633 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 14:28:41,634 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 14:28:41,635 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1122b.c [2020-10-28 14:28:41,737 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9e350f318/e2bd4d6ef19f4f5f894d9b420e035732/FLAG351a0e192 [2020-10-28 14:28:42,391 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 14:28:42,392 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1122b.c [2020-10-28 14:28:42,401 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9e350f318/e2bd4d6ef19f4f5f894d9b420e035732/FLAG351a0e192 [2020-10-28 14:28:42,768 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9e350f318/e2bd4d6ef19f4f5f894d9b420e035732 [2020-10-28 14:28:42,773 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 14:28:42,782 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 14:28:42,785 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 14:28:42,785 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 14:28:42,789 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 14:28:42,791 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:28:42" (1/1) ... [2020-10-28 14:28:42,795 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e9c7d65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:42, skipping insertion in model container [2020-10-28 14:28:42,796 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:28:42" (1/1) ... [2020-10-28 14:28:42,805 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 14:28:42,842 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 14:28:43,094 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:28:43,104 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 14:28:43,153 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:28:43,173 INFO L208 MainTranslator]: Completed translation [2020-10-28 14:28:43,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:43 WrapperNode [2020-10-28 14:28:43,174 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 14:28:43,175 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 14:28:43,175 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 14:28:43,175 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 14:28:43,191 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:43" (1/1) ... [2020-10-28 14:28:43,194 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:43" (1/1) ... [2020-10-28 14:28:43,221 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:43" (1/1) ... [2020-10-28 14:28:43,222 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:43" (1/1) ... [2020-10-28 14:28:43,255 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:43" (1/1) ... [2020-10-28 14:28:43,272 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:43" (1/1) ... [2020-10-28 14:28:43,283 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:43" (1/1) ... [2020-10-28 14:28:43,292 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 14:28:43,294 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 14:28:43,294 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 14:28:43,294 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 14:28:43,298 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:43" (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 14:28:43,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 14:28:43,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 14:28:43,389 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 14:28:43,390 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-10-28 14:28:43,390 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2020-10-28 14:28:43,390 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 14:28:43,390 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 14:28:43,390 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 14:28:43,391 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 14:28:43,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 14:28:43,391 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-28 14:28:43,391 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-10-28 14:28:43,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-28 14:28:43,392 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 14:28:43,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 14:28:43,392 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-28 14:28:43,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 14:28:43,392 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2020-10-28 14:28:43,393 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 14:28:43,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 14:28:43,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 14:28:43,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-28 14:28:43,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 14:28:44,034 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 14:28:44,035 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-10-28 14:28:44,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:28:44 BoogieIcfgContainer [2020-10-28 14:28:44,037 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 14:28:44,039 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 14:28:44,039 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 14:28:44,043 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 14:28:44,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 02:28:42" (1/3) ... [2020-10-28 14:28:44,044 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@761bc175 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:28:44, skipping insertion in model container [2020-10-28 14:28:44,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:43" (2/3) ... [2020-10-28 14:28:44,045 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@761bc175 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:28:44, skipping insertion in model container [2020-10-28 14:28:44,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:28:44" (3/3) ... [2020-10-28 14:28:44,047 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1122b.c [2020-10-28 14:28:44,062 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 14:28:44,069 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 14:28:44,084 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 14:28:44,113 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 14:28:44,114 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 14:28:44,114 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 14:28:44,114 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 14:28:44,114 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 14:28:44,115 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 14:28:44,115 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 14:28:44,115 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 14:28:44,135 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states. [2020-10-28 14:28:44,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-28 14:28:44,142 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:28:44,143 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] [2020-10-28 14:28:44,144 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:28:44,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:28:44,151 INFO L82 PathProgramCache]: Analyzing trace with hash 859309759, now seen corresponding path program 1 times [2020-10-28 14:28:44,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:28:44,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1937968459] [2020-10-28 14:28:44,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:28:44,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:28:44,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:28:44,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:28:44,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:28:44,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-28 14:28:44,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:28:44,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 313 [2020-10-28 14:28:44,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:28:44,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:28:44,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:28:44,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 14:28:44,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:28:44,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 14:28:44,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:28:44,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:28:44,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:28:44,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:28:44,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:28:44,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:28:44,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 14:28:44,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:28:44,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:28:44,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:28:44,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:28:44,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:28:44,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:28:44,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:28:44,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:28:44,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:28:44,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:28:44,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:28:44,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:28:44,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:28:44,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 14:28:44,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:28:44,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:28:44,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:28:44,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-28 14:28:44,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:28:44,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:28:44,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 14:28:44,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:28:44,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:28:44,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:28:44,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:28:44,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:28:44,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:28:44,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:28:44,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:28:44,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:28:44,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:28:44,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:28:44,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:28:44,884 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 14:28:44,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1937968459] [2020-10-28 14:28:44,891 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:28:44,891 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 14:28:44,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845717885] [2020-10-28 14:28:44,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 14:28:44,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:28:44,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 14:28:44,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:28:44,918 INFO L87 Difference]: Start difference. First operand 59 states. Second operand 4 states. [2020-10-28 14:28:45,081 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2020-10-28 14:28:45,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:28:45,318 INFO L93 Difference]: Finished difference Result 107 states and 164 transitions. [2020-10-28 14:28:45,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 14:28:45,320 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-10-28 14:28:45,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:28:45,331 INFO L225 Difference]: With dead ends: 107 [2020-10-28 14:28:45,331 INFO L226 Difference]: Without dead ends: 52 [2020-10-28 14:28:45,335 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 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 14:28:45,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-28 14:28:45,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-10-28 14:28:45,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-28 14:28:45,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 67 transitions. [2020-10-28 14:28:45,387 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 67 transitions. Word has length 23 [2020-10-28 14:28:45,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:28:45,388 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 67 transitions. [2020-10-28 14:28:45,388 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 14:28:45,388 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 67 transitions. [2020-10-28 14:28:45,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-28 14:28:45,413 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:28:45,413 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] [2020-10-28 14:28:45,414 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 14:28:45,414 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:28:45,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:28:45,420 INFO L82 PathProgramCache]: Analyzing trace with hash 853024034, now seen corresponding path program 1 times [2020-10-28 14:28:45,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:28:45,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [15347997] [2020-10-28 14:28:45,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:28:45,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-28 14:28:45,534 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-28 14:28:45,540 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-28 14:28:45,545 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 14:28:45,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 02:28:45 BoogieIcfgContainer [2020-10-28 14:28:45,566 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 14:28:45,571 INFO L168 Benchmark]: Toolchain (without parser) took 2791.43 ms. Allocated memory is still 154.1 MB. Free memory was 129.3 MB in the beginning and 129.2 MB in the end (delta: 129.3 kB). Peak memory consumption was 940.7 kB. Max. memory is 8.0 GB. [2020-10-28 14:28:45,572 INFO L168 Benchmark]: CDTParser took 0.71 ms. Allocated memory is still 154.1 MB. Free memory was 125.9 MB in the beginning and 125.9 MB in the end (delta: 80.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 14:28:45,574 INFO L168 Benchmark]: CACSL2BoogieTranslator took 389.49 ms. Allocated memory is still 154.1 MB. Free memory was 128.7 MB in the beginning and 117.2 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-10-28 14:28:45,576 INFO L168 Benchmark]: Boogie Preprocessor took 117.69 ms. Allocated memory is still 154.1 MB. Free memory was 117.2 MB in the beginning and 115.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-28 14:28:45,577 INFO L168 Benchmark]: RCFGBuilder took 743.26 ms. Allocated memory is still 154.1 MB. Free memory was 115.0 MB in the beginning and 122.5 MB in the end (delta: -7.4 MB). Peak memory consumption was 14.5 MB. Max. memory is 8.0 GB. [2020-10-28 14:28:45,578 INFO L168 Benchmark]: TraceAbstraction took 1527.52 ms. Allocated memory is still 154.1 MB. Free memory was 122.5 MB in the beginning and 129.2 MB in the end (delta: -6.7 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 14:28:45,589 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.71 ms. Allocated memory is still 154.1 MB. Free memory was 125.9 MB in the beginning and 125.9 MB in the end (delta: 80.2 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 389.49 ms. Allocated memory is still 154.1 MB. Free memory was 128.7 MB in the beginning and 117.2 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 117.69 ms. Allocated memory is still 154.1 MB. Free memory was 117.2 MB in the beginning and 115.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 743.26 ms. Allocated memory is still 154.1 MB. Free memory was 115.0 MB in the beginning and 122.5 MB in the end (delta: -7.4 MB). Peak memory consumption was 14.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1527.52 ms. Allocated memory is still 154.1 MB. Free memory was 122.5 MB in the beginning and 129.2 MB in the end (delta: -6.7 MB). There was no memory consumed. 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: 1.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, 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, 0.2s 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, 0.1s SatisfiabilityAnalysisTime, 0.5s 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...