/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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_1381.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 09:09:15,077 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 09:09:15,080 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 09:09:15,114 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 09:09:15,114 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 09:09:15,116 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 09:09:15,118 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 09:09:15,120 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 09:09:15,122 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 09:09:15,123 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 09:09:15,125 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 09:09:15,126 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 09:09:15,127 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 09:09:15,128 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 09:09:15,129 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 09:09:15,131 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 09:09:15,132 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 09:09:15,133 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 09:09:15,135 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 09:09:15,137 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 09:09:15,139 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 09:09:15,142 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 09:09:15,143 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 09:09:15,144 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 09:09:15,147 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 09:09:15,148 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 09:09:15,148 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 09:09:15,149 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 09:09:15,150 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 09:09:15,151 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 09:09:15,151 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 09:09:15,152 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 09:09:15,153 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 09:09:15,154 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 09:09:15,156 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 09:09:15,156 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 09:09:15,166 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 09:09:15,167 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 09:09:15,167 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 09:09:15,168 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 09:09:15,169 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 09:09:15,175 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 [2020-10-29 09:09:15,204 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 09:09:15,205 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 09:09:15,206 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 09:09:15,206 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 09:09:15,207 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 09:09:15,207 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 09:09:15,207 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 09:09:15,207 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 09:09:15,208 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 09:09:15,208 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 09:09:15,208 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 09:09:15,209 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 09:09:15,209 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 09:09:15,209 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 09:09:15,209 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 09:09:15,210 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 09:09:15,210 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 09:09:15,210 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 09:09:15,211 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 09:09:15,211 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 09:09:15,211 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 09:09:15,211 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:09:15,212 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 09:09:15,212 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 09:09:15,212 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 09:09:15,213 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 09:09:15,213 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 09:09:15,213 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 09:09:15,214 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 09:09:15,214 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 09:09:15,612 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 09:09:15,656 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 09:09:15,660 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 09:09:15,662 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 09:09:15,663 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 09:09:15,664 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1381.c [2020-10-29 09:09:15,758 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/508d12635/825e4bcdf4d44c578fe7ccb969910949/FLAGc99ea9ade [2020-10-29 09:09:16,328 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 09:09:16,329 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1381.c [2020-10-29 09:09:16,337 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/508d12635/825e4bcdf4d44c578fe7ccb969910949/FLAGc99ea9ade [2020-10-29 09:09:16,703 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/508d12635/825e4bcdf4d44c578fe7ccb969910949 [2020-10-29 09:09:16,708 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 09:09:16,716 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 09:09:16,718 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 09:09:16,718 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 09:09:16,722 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 09:09:16,723 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:09:16" (1/1) ... [2020-10-29 09:09:16,727 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5158ffdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:09:16, skipping insertion in model container [2020-10-29 09:09:16,727 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:09:16" (1/1) ... [2020-10-29 09:09:16,736 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 09:09:16,752 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 09:09:16,932 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:09:16,943 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 09:09:16,967 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:09:16,982 INFO L208 MainTranslator]: Completed translation [2020-10-29 09:09:16,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:09:16 WrapperNode [2020-10-29 09:09:16,983 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 09:09:16,984 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 09:09:16,984 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 09:09:16,984 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 09:09:16,997 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:09:16" (1/1) ... [2020-10-29 09:09:16,998 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:09:16" (1/1) ... [2020-10-29 09:09:17,008 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:09:16" (1/1) ... [2020-10-29 09:09:17,009 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:09:16" (1/1) ... [2020-10-29 09:09:17,019 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:09:16" (1/1) ... [2020-10-29 09:09:17,024 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:09:16" (1/1) ... [2020-10-29 09:09:17,026 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:09:16" (1/1) ... [2020-10-29 09:09:17,029 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 09:09:17,030 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 09:09:17,030 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 09:09:17,030 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 09:09:17,031 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:09:16" (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 [2020-10-29 09:09:17,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 09:09:17,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 09:09:17,109 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 09:09:17,109 INFO L138 BoogieDeclarations]: Found implementation of procedure copysign_float [2020-10-29 09:09:17,109 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2020-10-29 09:09:17,109 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 09:09:17,110 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 09:09:17,110 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 09:09:17,110 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 09:09:17,110 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 09:09:17,110 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-29 09:09:17,110 INFO L130 BoogieDeclarations]: Found specification of procedure copysign_float [2020-10-29 09:09:17,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-29 09:09:17,111 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 09:09:17,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 09:09:17,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 09:09:17,111 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-29 09:09:17,111 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2020-10-29 09:09:17,112 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 09:09:17,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 09:09:17,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 09:09:17,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 09:09:17,615 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 09:09:17,616 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-29 09:09:17,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:09:17 BoogieIcfgContainer [2020-10-29 09:09:17,618 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 09:09:17,624 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 09:09:17,624 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 09:09:17,629 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 09:09:17,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 09:09:16" (1/3) ... [2020-10-29 09:09:17,631 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d73c041 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:09:17, skipping insertion in model container [2020-10-29 09:09:17,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:09:16" (2/3) ... [2020-10-29 09:09:17,633 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d73c041 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:09:17, skipping insertion in model container [2020-10-29 09:09:17,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:09:17" (3/3) ... [2020-10-29 09:09:17,635 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1381.c [2020-10-29 09:09:17,653 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 09:09:17,659 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 09:09:17,676 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 09:09:17,719 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 09:09:17,719 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 09:09:17,719 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 09:09:17,719 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 09:09:17,720 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 09:09:17,720 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 09:09:17,720 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 09:09:17,720 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 09:09:17,758 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-10-29 09:09:17,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-29 09:09:17,766 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:09:17,767 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] [2020-10-29 09:09:17,768 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:09:17,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:09:17,778 INFO L82 PathProgramCache]: Analyzing trace with hash 767192926, now seen corresponding path program 1 times [2020-10-29 09:09:17,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:09:17,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1895703974] [2020-10-29 09:09:17,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:09:17,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:09:18,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:09:18,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:09:18,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:09:18,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:09:18,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 09:09:18,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:09:18,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 274 [2020-10-29 09:09:18,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:09:18,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:09:18,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:09:18,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 09:09:18,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:09:18,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 09:09:18,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:09:18,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:09:18,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:09:18,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:09:18,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:09:18,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:09:18,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 09:09:18,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:09:18,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:09:18,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:09:18,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:09:18,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:09:18,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:09:18,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:09:18,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:09:18,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:09:18,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:09:18,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:09:18,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:09:18,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 09:09:18,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:09:18,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 09:09:18,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:09:18,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:09:18,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:09:18,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-29 09:09:18,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:09:18,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:09:18,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-29 09:09:18,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:09:18,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:09:18,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:09:18,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:09:18,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:09:18,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 09:09:18,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:09:18,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:09:18,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:09:18,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:09:18,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:09:18,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:09:18,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:09:18,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1895703974] [2020-10-29 09:09:18,534 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:09:18,534 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 09:09:18,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456376418] [2020-10-29 09:09:18,541 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 09:09:18,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:09:18,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 09:09:18,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 09:09:18,560 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 4 states. [2020-10-29 09:09:18,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:09:18,731 INFO L93 Difference]: Finished difference Result 57 states and 70 transitions. [2020-10-29 09:09:18,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-29 09:09:18,733 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-10-29 09:09:18,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:09:18,741 INFO L225 Difference]: With dead ends: 57 [2020-10-29 09:09:18,741 INFO L226 Difference]: Without dead ends: 27 [2020-10-29 09:09:18,745 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 [2020-10-29 09:09:18,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-29 09:09:18,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-10-29 09:09:18,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-29 09:09:18,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 26 transitions. [2020-10-29 09:09:18,790 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 26 transitions. Word has length 23 [2020-10-29 09:09:18,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:09:18,791 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 26 transitions. [2020-10-29 09:09:18,791 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 09:09:18,791 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 26 transitions. [2020-10-29 09:09:18,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-29 09:09:18,792 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:09:18,793 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, 1] [2020-10-29 09:09:18,793 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 09:09:18,793 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:09:18,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:09:18,794 INFO L82 PathProgramCache]: Analyzing trace with hash -680788211, now seen corresponding path program 1 times [2020-10-29 09:09:18,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:09:18,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [854537089] [2020-10-29 09:09:18,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:09:18,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-29 09:09:18,836 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-29 09:09:18,837 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-29 09:09:18,842 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 09:09:18,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 09:09:18 BoogieIcfgContainer [2020-10-29 09:09:18,860 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 09:09:18,863 INFO L168 Benchmark]: Toolchain (without parser) took 2152.06 ms. Allocated memory was 125.8 MB in the beginning and 180.4 MB in the end (delta: 54.5 MB). Free memory was 101.9 MB in the beginning and 144.4 MB in the end (delta: -42.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 8.0 GB. [2020-10-29 09:09:18,864 INFO L168 Benchmark]: CDTParser took 0.58 ms. Allocated memory is still 125.8 MB. Free memory was 100.4 MB in the beginning and 100.3 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 09:09:18,865 INFO L168 Benchmark]: CACSL2BoogieTranslator took 265.26 ms. Allocated memory is still 125.8 MB. Free memory was 101.2 MB in the beginning and 91.4 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-29 09:09:18,866 INFO L168 Benchmark]: Boogie Preprocessor took 45.13 ms. Allocated memory is still 125.8 MB. Free memory was 91.4 MB in the beginning and 89.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-29 09:09:18,867 INFO L168 Benchmark]: RCFGBuilder took 588.48 ms. Allocated memory was 125.8 MB in the beginning and 180.4 MB in the end (delta: 54.5 MB). Free memory was 89.7 MB in the beginning and 160.7 MB in the end (delta: -71.0 MB). Peak memory consumption was 15.3 MB. Max. memory is 8.0 GB. [2020-10-29 09:09:18,868 INFO L168 Benchmark]: TraceAbstraction took 1236.19 ms. Allocated memory is still 180.4 MB. Free memory was 160.1 MB in the beginning and 144.4 MB in the end (delta: 15.6 MB). Peak memory consumption was 16.0 MB. Max. memory is 8.0 GB. [2020-10-29 09:09:18,872 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.58 ms. Allocated memory is still 125.8 MB. Free memory was 100.4 MB in the beginning and 100.3 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 265.26 ms. Allocated memory is still 125.8 MB. Free memory was 101.2 MB in the beginning and 91.4 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 45.13 ms. Allocated memory is still 125.8 MB. Free memory was 91.4 MB in the beginning and 89.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 588.48 ms. Allocated memory was 125.8 MB in the beginning and 180.4 MB in the end (delta: 54.5 MB). Free memory was 89.7 MB in the beginning and 160.7 MB in the end (delta: -71.0 MB). Peak memory consumption was 15.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1236.19 ms. Allocated memory is still 180.4 MB. Free memory was 160.1 MB in the beginning and 144.4 MB in the end (delta: 15.6 MB). Peak memory consumption was 16.0 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 35, overapproximation of bitwiseOr at line 28, overapproximation of someBinaryArithmeticFLOAToperation at line 45. Possible FailurePath: [L45] float x = 0.0f / 0.0f; [L46] float y = __VERIFIER_nondet_float(); [L47] CALL, EXPR copysign_float(x, y) [L15] __uint32_t ix, iy; [L17] ieee_float_shape_type gf_u; [L18] gf_u.value = (x) [L19] EXPR gf_u.word [L19] (ix) = gf_u.word [L22] ieee_float_shape_type gf_u; [L23] gf_u.value = (y) [L24] EXPR gf_u.word [L24] (iy) = gf_u.word [L27] ieee_float_shape_type sf_u; [L28] sf_u.word = ((ix & 0x7fffffff) | (iy & 0x80000000)) [L29] EXPR sf_u.value [L29] (x) = sf_u.value [L31] return x; [L47] RET, EXPR copysign_float(x, y) [L47] float res = copysign_float(x, y); [L50] CALL, EXPR isnan_float(res) [L35] return x != x; [L50] RET, EXPR isnan_float(res) [L50] COND TRUE !isnan_float(res) [L51] CALL reach_error() [L3] __assert_fail("0", "float_req_bl_1381.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 28 SDtfs, 10 SDslu, 17 SDs, 0 SdLazy, 25 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s 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=34occurred 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, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 1408 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...