/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_1011a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 17:55:01,187 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 17:55:01,189 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 17:55:01,235 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 17:55:01,235 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 17:55:01,237 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 17:55:01,239 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 17:55:01,241 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 17:55:01,244 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 17:55:01,245 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 17:55:01,246 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 17:55:01,248 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 17:55:01,248 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 17:55:01,250 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 17:55:01,251 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 17:55:01,253 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 17:55:01,254 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 17:55:01,256 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 17:55:01,265 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 17:55:01,268 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 17:55:01,270 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 17:55:01,272 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 17:55:01,273 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 17:55:01,274 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 17:55:01,278 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 17:55:01,288 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 17:55:01,290 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 17:55:01,290 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 17:55:01,292 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 [2020-10-23 17:55:01,319 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 17:55:01,320 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 17:55:01,321 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-23 17:55:01,322 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-23 17:55:01,322 INFO L138 SettingsManager]: * Use SBE=true [2020-10-23 17:55:01,323 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 17:55:01,323 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 17:55:01,323 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 17:55:01,323 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 17:55:01,324 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 17:55:01,324 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 17:55:01,324 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 17:55:01,324 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 17:55:01,325 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 17:55:01,325 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 17:55:01,325 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 17:55:01,325 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 17:55:01,326 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 17:55:01,326 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-23 17:55:01,326 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 17:55:01,326 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 17:55:01,327 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 17:55:01,327 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 17:55:01,327 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-23 17:55:01,327 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-23 17:55:01,327 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-23 17:55:01,328 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-23 17:55:01,328 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 17:55:01,328 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-23 17:55:01,328 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 17:55:01,742 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 17:55:01,773 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 17:55:01,776 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 17:55:01,778 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 17:55:01,779 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 17:55:01,780 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1011a.c [2020-10-23 17:55:01,859 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e47599b72/ac61443532444cd098fff91a777519bc/FLAG25b9829c4 [2020-10-23 17:55:02,434 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 17:55:02,434 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1011a.c [2020-10-23 17:55:02,442 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e47599b72/ac61443532444cd098fff91a777519bc/FLAG25b9829c4 [2020-10-23 17:55:02,822 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e47599b72/ac61443532444cd098fff91a777519bc [2020-10-23 17:55:02,828 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 17:55:02,841 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 17:55:02,844 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 17:55:02,844 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 17:55:02,851 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 17:55:02,852 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 05:55:02" (1/1) ... [2020-10-23 17:55:02,856 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3eacea19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:02, skipping insertion in model container [2020-10-23 17:55:02,857 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 05:55:02" (1/1) ... [2020-10-23 17:55:02,865 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 17:55:02,891 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 17:55:03,162 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 17:55:03,179 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 17:55:03,220 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 17:55:03,248 INFO L208 MainTranslator]: Completed translation [2020-10-23 17:55:03,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:03 WrapperNode [2020-10-23 17:55:03,250 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 17:55:03,252 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 17:55:03,252 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 17:55:03,252 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 17:55:03,268 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:03" (1/1) ... [2020-10-23 17:55:03,270 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:03" (1/1) ... [2020-10-23 17:55:03,283 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:03" (1/1) ... [2020-10-23 17:55:03,283 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:03" (1/1) ... [2020-10-23 17:55:03,309 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:03" (1/1) ... [2020-10-23 17:55:03,317 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:03" (1/1) ... [2020-10-23 17:55:03,331 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:03" (1/1) ... [2020-10-23 17:55:03,334 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 17:55:03,336 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 17:55:03,336 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 17:55:03,337 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 17:55:03,338 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:03" (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 [2020-10-23 17:55:03,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 17:55:03,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 17:55:03,423 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 17:55:03,424 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-10-23 17:55:03,424 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2020-10-23 17:55:03,424 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 17:55:03,424 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 17:55:03,425 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 17:55:03,425 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 17:55:03,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 17:55:03,426 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-10-23 17:55:03,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-23 17:55:03,426 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 17:55:03,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 17:55:03,428 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2020-10-23 17:55:03,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 17:55:03,429 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-23 17:55:03,430 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 17:55:03,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 17:55:03,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 17:55:03,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 17:55:03,909 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 17:55:03,909 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-23 17:55:03,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 05:55:03 BoogieIcfgContainer [2020-10-23 17:55:03,911 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 17:55:03,913 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 17:55:03,913 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 17:55:03,917 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 17:55:03,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 05:55:02" (1/3) ... [2020-10-23 17:55:03,918 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c7511eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 05:55:03, skipping insertion in model container [2020-10-23 17:55:03,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:03" (2/3) ... [2020-10-23 17:55:03,919 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c7511eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 05:55:03, skipping insertion in model container [2020-10-23 17:55:03,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 05:55:03" (3/3) ... [2020-10-23 17:55:03,920 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1011a.c [2020-10-23 17:55:03,933 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-23 17:55:03,939 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 17:55:03,954 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 17:55:03,983 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 17:55:03,983 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 17:55:03,983 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-23 17:55:03,983 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 17:55:03,983 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 17:55:03,984 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 17:55:03,984 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 17:55:03,984 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 17:55:04,007 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-10-23 17:55:04,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-23 17:55:04,013 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 17:55:04,014 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 17:55:04,014 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 17:55:04,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 17:55:04,021 INFO L82 PathProgramCache]: Analyzing trace with hash -1620995038, now seen corresponding path program 1 times [2020-10-23 17:55:04,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 17:55:04,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899937229] [2020-10-23 17:55:04,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 17:55:04,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:55:04,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 17:55:04,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:55:04,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 17:55:04,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:55:04,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 17:55:04,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899937229] [2020-10-23 17:55:04,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 17:55:04,298 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 17:55:04,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055756215] [2020-10-23 17:55:04,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 17:55:04,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 17:55:04,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 17:55:04,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 17:55:04,331 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 4 states. [2020-10-23 17:55:04,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 17:55:04,494 INFO L93 Difference]: Finished difference Result 61 states and 77 transitions. [2020-10-23 17:55:04,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 17:55:04,497 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-10-23 17:55:04,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 17:55:04,504 INFO L225 Difference]: With dead ends: 61 [2020-10-23 17:55:04,505 INFO L226 Difference]: Without dead ends: 29 [2020-10-23 17:55:04,508 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-23 17:55:04,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-23 17:55:04,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-23 17:55:04,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-23 17:55:04,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2020-10-23 17:55:04,551 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 18 [2020-10-23 17:55:04,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 17:55:04,552 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2020-10-23 17:55:04,552 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 17:55:04,552 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2020-10-23 17:55:04,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-23 17:55:04,554 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 17:55:04,554 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 17:55:04,554 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 17:55:04,555 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 17:55:04,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 17:55:04,556 INFO L82 PathProgramCache]: Analyzing trace with hash 1641968991, now seen corresponding path program 1 times [2020-10-23 17:55:04,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 17:55:04,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257456628] [2020-10-23 17:55:04,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 17:55:04,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 17:55:04,611 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 17:55:04,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 17:55:04,690 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 17:55:04,742 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-23 17:55:04,742 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 17:55:04,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 17:55:04,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 05:55:04 BoogieIcfgContainer [2020-10-23 17:55:04,787 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 17:55:04,789 INFO L168 Benchmark]: Toolchain (without parser) took 1955.20 ms. Allocated memory is still 168.8 MB. Free memory was 142.9 MB in the beginning and 104.9 MB in the end (delta: 38.0 MB). Peak memory consumption was 37.6 MB. Max. memory is 8.0 GB. [2020-10-23 17:55:04,790 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 168.8 MB. Free memory was 141.3 MB in the beginning and 141.2 MB in the end (delta: 88.8 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 17:55:04,791 INFO L168 Benchmark]: CACSL2BoogieTranslator took 406.81 ms. Allocated memory is still 168.8 MB. Free memory was 142.3 MB in the beginning and 132.4 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-23 17:55:04,793 INFO L168 Benchmark]: Boogie Preprocessor took 82.90 ms. Allocated memory is still 168.8 MB. Free memory was 132.3 MB in the beginning and 130.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-23 17:55:04,794 INFO L168 Benchmark]: RCFGBuilder took 575.95 ms. Allocated memory is still 168.8 MB. Free memory was 130.6 MB in the beginning and 149.5 MB in the end (delta: -18.8 MB). Peak memory consumption was 18.7 MB. Max. memory is 8.0 GB. [2020-10-23 17:55:04,795 INFO L168 Benchmark]: TraceAbstraction took 874.16 ms. Allocated memory is still 168.8 MB. Free memory was 149.0 MB in the beginning and 104.9 MB in the end (delta: 44.0 MB). Peak memory consumption was 44.0 MB. Max. memory is 8.0 GB. [2020-10-23 17:55:04,799 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 168.8 MB. Free memory was 141.3 MB in the beginning and 141.2 MB in the end (delta: 88.8 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 406.81 ms. Allocated memory is still 168.8 MB. Free memory was 142.3 MB in the beginning and 132.4 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 82.90 ms. Allocated memory is still 168.8 MB. Free memory was 132.3 MB in the beginning and 130.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 575.95 ms. Allocated memory is still 168.8 MB. Free memory was 130.6 MB in the beginning and 149.5 MB in the end (delta: -18.8 MB). Peak memory consumption was 18.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 874.16 ms. Allocated memory is still 168.8 MB. Free memory was 149.0 MB in the beginning and 104.9 MB in the end (delta: 44.0 MB). Peak memory consumption was 44.0 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 someBinaryDOUBLEComparisonOperation at line 53, overapproximation of bitwiseAnd at line 37. Possible FailurePath: [L49] double x = 0.0; VAL [x=0] [L50] CALL, EXPR fabs_double(x) VAL [\old(x)=0] [L28] __uint32_t high; VAL [\old(x)=0, x=0] [L30] ieee_double_shape_type gh_u; [L31] gh_u.value = (x) [L32] EXPR gh_u.parts.msw [L32] (high) = gh_u.parts.msw [L35] ieee_double_shape_type sh_u; [L36] sh_u.value = (x) [L37] sh_u.parts.msw = (high & 0x7fffffff) [L38] EXPR sh_u.value [L38] (x) = sh_u.value [L40] return x; VAL [\old(x)=0, \result=0, high=64, x=0] [L50] RET, EXPR fabs_double(x) VAL [fabs_double(x)=0, x=0] [L50] double res = fabs_double(x); [L53] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [res=0, res == 0.0 && __signbit_double(res) == 0=0, x=0] [L53] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L54] CALL reach_error() [L3] __assert_fail("0", "double_req_bl_1011a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 36 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 30 SDtfs, 8 SDslu, 23 SDs, 0 SdLazy, 28 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred 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, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 1003 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...