/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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1032b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-06 21:57:15,067 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-06 21:57:15,072 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-06 21:57:15,126 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-06 21:57:15,127 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-06 21:57:15,130 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-06 21:57:15,134 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-06 21:57:15,142 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-06 21:57:15,145 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-06 21:57:15,151 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-06 21:57:15,152 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-06 21:57:15,153 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-06 21:57:15,154 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-06 21:57:15,157 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-06 21:57:15,159 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-06 21:57:15,161 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-06 21:57:15,162 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-06 21:57:15,165 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-06 21:57:15,172 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-06 21:57:15,180 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-06 21:57:15,182 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-06 21:57:15,184 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-06 21:57:15,185 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-06 21:57:15,188 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-06 21:57:15,196 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-06 21:57:15,222 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-06 21:57:15,223 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-06 21:57:15,224 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-06 21:57:15,225 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-06 21:57:15,281 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-06 21:57:15,281 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-06 21:57:15,285 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-06 21:57:15,286 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-06 21:57:15,286 INFO L138 SettingsManager]: * Use SBE=true [2020-11-06 21:57:15,286 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-06 21:57:15,286 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-06 21:57:15,286 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-06 21:57:15,287 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-06 21:57:15,287 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-06 21:57:15,288 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-06 21:57:15,288 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-06 21:57:15,289 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-06 21:57:15,289 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-06 21:57:15,289 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-06 21:57:15,289 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-06 21:57:15,289 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-06 21:57:15,290 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-06 21:57:15,290 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-06 21:57:15,290 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-06 21:57:15,290 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-06 21:57:15,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 21:57:15,291 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-06 21:57:15,291 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-06 21:57:15,291 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-06 21:57:15,291 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-06 21:57:15,292 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-06 21:57:15,292 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-06 21:57:15,292 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-06 21:57:15,292 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-06 21:57:15,678 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-06 21:57:15,706 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-06 21:57:15,709 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-06 21:57:15,711 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-06 21:57:15,712 INFO L275 PluginConnector]: CDTParser initialized [2020-11-06 21:57:15,713 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1032b.c [2020-11-06 21:57:15,790 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f91f094db/345066b88ae84f40ad1c2cc8e3b8c178/FLAG4a76d8d28 [2020-11-06 21:57:16,531 INFO L306 CDTParser]: Found 1 translation units. [2020-11-06 21:57:16,532 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1032b.c [2020-11-06 21:57:16,541 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f91f094db/345066b88ae84f40ad1c2cc8e3b8c178/FLAG4a76d8d28 [2020-11-06 21:57:16,847 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f91f094db/345066b88ae84f40ad1c2cc8e3b8c178 [2020-11-06 21:57:16,851 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-06 21:57:16,858 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-06 21:57:16,859 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-06 21:57:16,860 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-06 21:57:16,864 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-06 21:57:16,865 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:57:16" (1/1) ... [2020-11-06 21:57:16,868 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@768a3f81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:16, skipping insertion in model container [2020-11-06 21:57:16,869 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:57:16" (1/1) ... [2020-11-06 21:57:16,877 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-06 21:57:16,896 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-06 21:57:17,092 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 21:57:17,103 INFO L203 MainTranslator]: Completed pre-run [2020-11-06 21:57:17,137 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 21:57:17,155 INFO L208 MainTranslator]: Completed translation [2020-11-06 21:57:17,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:17 WrapperNode [2020-11-06 21:57:17,156 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-06 21:57:17,157 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-06 21:57:17,157 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-06 21:57:17,158 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-06 21:57:17,172 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:17" (1/1) ... [2020-11-06 21:57:17,172 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:17" (1/1) ... [2020-11-06 21:57:17,183 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:17" (1/1) ... [2020-11-06 21:57:17,183 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:17" (1/1) ... [2020-11-06 21:57:17,197 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:17" (1/1) ... [2020-11-06 21:57:17,202 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:17" (1/1) ... [2020-11-06 21:57:17,205 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:17" (1/1) ... [2020-11-06 21:57:17,209 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-06 21:57:17,210 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-06 21:57:17,210 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-06 21:57:17,210 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-06 21:57:17,211 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:17" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-11-06 21:57:17,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-06 21:57:17,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-06 21:57:17,292 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-06 21:57:17,292 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-11-06 21:57:17,293 INFO L138 BoogieDeclarations]: Found implementation of procedure round_double [2020-11-06 21:57:17,293 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-11-06 21:57:17,293 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-06 21:57:17,293 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-06 21:57:17,293 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-06 21:57:17,294 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-06 21:57:17,295 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-06 21:57:17,295 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-11-06 21:57:17,295 INFO L130 BoogieDeclarations]: Found specification of procedure round_double [2020-11-06 21:57:17,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-06 21:57:17,296 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-06 21:57:17,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-06 21:57:17,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-06 21:57:17,298 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-06 21:57:17,298 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-11-06 21:57:17,298 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-06 21:57:17,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-06 21:57:17,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-06 21:57:17,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-06 21:57:17,753 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-06 21:57:17,754 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-06 21:57:17,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:57:17 BoogieIcfgContainer [2020-11-06 21:57:17,756 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-06 21:57:17,758 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-06 21:57:17,758 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-06 21:57:17,762 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-06 21:57:17,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:57:16" (1/3) ... [2020-11-06 21:57:17,763 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@410ef3cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:57:17, skipping insertion in model container [2020-11-06 21:57:17,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:17" (2/3) ... [2020-11-06 21:57:17,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@410ef3cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:57:17, skipping insertion in model container [2020-11-06 21:57:17,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:57:17" (3/3) ... [2020-11-06 21:57:17,766 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1032b.c [2020-11-06 21:57:17,783 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-06 21:57:17,787 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-06 21:57:17,806 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-06 21:57:17,854 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-06 21:57:17,855 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-06 21:57:17,855 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-06 21:57:17,855 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-06 21:57:17,855 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-06 21:57:17,855 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-06 21:57:17,856 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-06 21:57:17,856 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-06 21:57:17,880 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2020-11-06 21:57:17,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-06 21:57:17,887 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 21:57:17,888 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 21:57:17,888 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 21:57:17,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 21:57:17,894 INFO L82 PathProgramCache]: Analyzing trace with hash -1319604067, now seen corresponding path program 1 times [2020-11-06 21:57:17,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 21:57:17,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528225853] [2020-11-06 21:57:17,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 21:57:18,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:57:18,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 21:57:18,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:57:18,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-06 21:57:18,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:57:18,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 21:57:18,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528225853] [2020-11-06 21:57:18,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 21:57:18,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-06 21:57:18,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417684858] [2020-11-06 21:57:18,198 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-06 21:57:18,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 21:57:18,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-06 21:57:18,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-06 21:57:18,218 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 4 states. [2020-11-06 21:57:18,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 21:57:18,459 INFO L93 Difference]: Finished difference Result 83 states and 115 transitions. [2020-11-06 21:57:18,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-06 21:57:18,461 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-11-06 21:57:18,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 21:57:18,471 INFO L225 Difference]: With dead ends: 83 [2020-11-06 21:57:18,471 INFO L226 Difference]: Without dead ends: 40 [2020-11-06 21:57:18,475 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-06 21:57:18,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-11-06 21:57:18,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-11-06 21:57:18,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-11-06 21:57:18,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2020-11-06 21:57:18,526 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 20 [2020-11-06 21:57:18,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 21:57:18,527 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2020-11-06 21:57:18,527 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-06 21:57:18,527 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2020-11-06 21:57:18,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-06 21:57:18,528 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 21:57:18,528 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] [2020-11-06 21:57:18,529 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-06 21:57:18,529 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 21:57:18,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 21:57:18,530 INFO L82 PathProgramCache]: Analyzing trace with hash 1838433378, now seen corresponding path program 1 times [2020-11-06 21:57:18,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 21:57:18,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415066482] [2020-11-06 21:57:18,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 21:57:18,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 21:57:18,598 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 21:57:18,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 21:57:18,688 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 21:57:18,730 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-06 21:57:18,730 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-06 21:57:18,732 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-06 21:57:18,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 09:57:18 BoogieIcfgContainer [2020-11-06 21:57:18,772 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-06 21:57:18,775 INFO L168 Benchmark]: Toolchain (without parser) took 1921.00 ms. Allocated memory is still 160.4 MB. Free memory was 136.5 MB in the beginning and 131.6 MB in the end (delta: 4.9 MB). Peak memory consumption was 5.8 MB. Max. memory is 8.0 GB. [2020-11-06 21:57:18,776 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 125.8 MB. Free memory was 100.9 MB in the beginning and 100.8 MB in the end (delta: 126.0 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 21:57:18,777 INFO L168 Benchmark]: CACSL2BoogieTranslator took 297.06 ms. Allocated memory is still 160.4 MB. Free memory was 135.9 MB in the beginning and 125.1 MB in the end (delta: 10.8 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-11-06 21:57:18,778 INFO L168 Benchmark]: Boogie Preprocessor took 51.48 ms. Allocated memory is still 160.4 MB. Free memory was 124.9 MB in the beginning and 123.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-06 21:57:18,779 INFO L168 Benchmark]: RCFGBuilder took 546.05 ms. Allocated memory is still 160.4 MB. Free memory was 123.1 MB in the beginning and 135.0 MB in the end (delta: -12.0 MB). Peak memory consumption was 15.5 MB. Max. memory is 8.0 GB. [2020-11-06 21:57:18,780 INFO L168 Benchmark]: TraceAbstraction took 1014.46 ms. Allocated memory is still 160.4 MB. Free memory was 134.5 MB in the beginning and 131.6 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 8.0 GB. [2020-11-06 21:57:18,784 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 125.8 MB. Free memory was 100.9 MB in the beginning and 100.8 MB in the end (delta: 126.0 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 297.06 ms. Allocated memory is still 160.4 MB. Free memory was 135.9 MB in the beginning and 125.1 MB in the end (delta: 10.8 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 51.48 ms. Allocated memory is still 160.4 MB. Free memory was 124.9 MB in the beginning and 123.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 546.05 ms. Allocated memory is still 160.4 MB. Free memory was 123.1 MB in the beginning and 135.0 MB in the end (delta: -12.0 MB). Peak memory consumption was 15.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1014.46 ms. Allocated memory is still 160.4 MB. Free memory was 134.5 MB in the beginning and 131.6 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 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 shiftRight at line 36, overapproximation of someUnaryDOUBLEoperation at line 88, overapproximation of bitwiseAnd at line 37, overapproximation of someBinaryDOUBLEComparisonOperation at line 92. Possible FailurePath: [L88] double x = -0.0; [L89] CALL, EXPR round_double(x) VAL [\old(x)=1072693250] [L20] __int32_t msw, exponent_less_1023; [L21] __uint32_t lsw; VAL [\old(x)=1072693250, x=1072693250] [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (msw) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (lsw) = ew_u.parts.lsw [L28] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 VAL [\old(x)=1072693250, exponent_less_1023=0, lsw=0, msw=0, x=1072693250] [L29] COND TRUE exponent_less_1023 < 20 VAL [\old(x)=1072693250, exponent_less_1023=0, lsw=0, msw=0, x=1072693250] [L30] COND FALSE !(exponent_less_1023 < 0) [L36] __uint32_t exponent_mask = 0x000fffff >> exponent_less_1023; VAL [\old(x)=1072693250, exponent_less_1023=0, lsw=0, msw=0, x=1072693250] [L37] COND TRUE (msw & exponent_mask) == 0 && lsw == 0 [L38] return x; VAL [\old(x)=1072693250, \result=1072693250, exponent_less_1023=0, lsw=0, msw=0, x=1072693250] [L89] RET, EXPR round_double(x) VAL [round_double(x)=1072693250, x=1072693250] [L89] double res = round_double(x); [L92] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [res=1072693250, res == -0.0 && __signbit_double(res) == 1=0, x=1072693250] [L92] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L93] CALL reach_error() [L3] __assert_fail("0", "double_req_bl_1032b.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 50 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 49 SDtfs, 8 SDslu, 42 SDs, 0 SdLazy, 47 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred 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, 0.1s InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 1159 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...