/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/float-newlib/double_req_bl_1122a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 03:46:17,855 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 03:46:17,858 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 03:46:17,894 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 03:46:17,895 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 03:46:17,896 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 03:46:17,898 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 03:46:17,901 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 03:46:17,903 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 03:46:17,905 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 03:46:17,906 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 03:46:17,907 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 03:46:17,908 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 03:46:17,909 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 03:46:17,911 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 03:46:17,912 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 03:46:17,913 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 03:46:17,914 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 03:46:17,916 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 03:46:17,919 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 03:46:17,921 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 03:46:17,922 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 03:46:17,926 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 03:46:17,943 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 03:46:17,952 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 03:46:17,971 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 03:46:17,973 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 03:46:17,975 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 03:46:17,976 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 03:46:18,031 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 03:46:18,031 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 03:46:18,034 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 03:46:18,034 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 03:46:18,034 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 03:46:18,035 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 03:46:18,035 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 03:46:18,036 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 03:46:18,036 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 03:46:18,036 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 03:46:18,037 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 03:46:18,037 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 03:46:18,037 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 03:46:18,037 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 03:46:18,037 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 03:46:18,038 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 03:46:18,038 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 03:46:18,039 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 03:46:18,039 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 03:46:18,039 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 03:46:18,040 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 03:46:18,040 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 03:46:18,040 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 03:46:18,040 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 03:46:18,041 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 03:46:18,041 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 03:46:18,417 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 03:46:18,448 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 03:46:18,451 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 03:46:18,453 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 03:46:18,454 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 03:46:18,455 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1122a.c [2020-12-22 03:46:18,541 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb7fe9e90/6cd928db1acb424b92a7b63db07e8fcc/FLAGcd09e9ecc [2020-12-22 03:46:19,181 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 03:46:19,182 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1122a.c [2020-12-22 03:46:19,191 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb7fe9e90/6cd928db1acb424b92a7b63db07e8fcc/FLAGcd09e9ecc [2020-12-22 03:46:19,545 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb7fe9e90/6cd928db1acb424b92a7b63db07e8fcc [2020-12-22 03:46:19,548 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 03:46:19,551 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 03:46:19,556 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 03:46:19,556 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 03:46:19,560 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 03:46:19,561 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:46:19" (1/1) ... [2020-12-22 03:46:19,564 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4332d98b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:19, skipping insertion in model container [2020-12-22 03:46:19,564 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:46:19" (1/1) ... [2020-12-22 03:46:19,575 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 03:46:19,622 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 03:46:19,977 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1122a.c[3905,3918] [2020-12-22 03:46:19,982 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 03:46:19,996 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 03:46:20,092 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1122a.c[3905,3918] [2020-12-22 03:46:20,093 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 03:46:20,119 INFO L208 MainTranslator]: Completed translation [2020-12-22 03:46:20,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:20 WrapperNode [2020-12-22 03:46:20,120 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 03:46:20,122 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 03:46:20,123 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 03:46:20,127 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 03:46:20,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:20" (1/1) ... [2020-12-22 03:46:20,163 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:20" (1/1) ... [2020-12-22 03:46:20,225 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 03:46:20,226 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 03:46:20,226 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 03:46:20,226 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 03:46:20,240 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:20" (1/1) ... [2020-12-22 03:46:20,241 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:20" (1/1) ... [2020-12-22 03:46:20,256 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:20" (1/1) ... [2020-12-22 03:46:20,256 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:20" (1/1) ... [2020-12-22 03:46:20,283 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:20" (1/1) ... [2020-12-22 03:46:20,301 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:20" (1/1) ... [2020-12-22 03:46:20,307 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:20" (1/1) ... [2020-12-22 03:46:20,315 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 03:46:20,320 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 03:46:20,320 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 03:46:20,320 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 03:46:20,321 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:20" (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 [2020-12-22 03:46:20,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 03:46:20,458 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 03:46:20,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 03:46:20,459 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-12-22 03:46:20,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-12-22 03:46:20,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 03:46:20,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 03:46:20,461 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 03:46:20,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-12-22 03:46:20,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 03:46:21,225 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 03:46:21,226 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2020-12-22 03:46:21,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:46:21 BoogieIcfgContainer [2020-12-22 03:46:21,232 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 03:46:21,237 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 03:46:21,237 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 03:46:21,244 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 03:46:21,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 03:46:19" (1/3) ... [2020-12-22 03:46:21,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14b68658 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:46:21, skipping insertion in model container [2020-12-22 03:46:21,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:20" (2/3) ... [2020-12-22 03:46:21,246 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14b68658 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:46:21, skipping insertion in model container [2020-12-22 03:46:21,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:46:21" (3/3) ... [2020-12-22 03:46:21,248 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1122a.c [2020-12-22 03:46:21,255 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 03:46:21,264 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 03:46:21,289 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 03:46:21,319 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 03:46:21,319 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 03:46:21,319 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 03:46:21,320 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 03:46:21,320 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 03:46:21,320 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 03:46:21,320 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 03:46:21,320 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 03:46:21,336 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states. [2020-12-22 03:46:21,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 03:46:21,342 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:46:21,343 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:46:21,343 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:46:21,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:46:21,350 INFO L82 PathProgramCache]: Analyzing trace with hash 668833300, now seen corresponding path program 1 times [2020-12-22 03:46:21,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:46:21,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331309172] [2020-12-22 03:46:21,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:46:21,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:46:21,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:46:21,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331309172] [2020-12-22 03:46:21,595 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:46:21,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 03:46:21,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884729710] [2020-12-22 03:46:21,602 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 03:46:21,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:46:21,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 03:46:21,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 03:46:21,627 INFO L87 Difference]: Start difference. First operand 55 states. Second operand 2 states. [2020-12-22 03:46:21,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:46:21,667 INFO L93 Difference]: Finished difference Result 108 states and 190 transitions. [2020-12-22 03:46:21,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 03:46:21,669 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-12-22 03:46:21,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:46:21,681 INFO L225 Difference]: With dead ends: 108 [2020-12-22 03:46:21,681 INFO L226 Difference]: Without dead ends: 52 [2020-12-22 03:46:21,685 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 03:46:21,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-12-22 03:46:21,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-12-22 03:46:21,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-12-22 03:46:21,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 78 transitions. [2020-12-22 03:46:21,743 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 78 transitions. Word has length 10 [2020-12-22 03:46:21,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:46:21,745 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 78 transitions. [2020-12-22 03:46:21,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 03:46:21,745 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 78 transitions. [2020-12-22 03:46:21,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-22 03:46:21,746 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:46:21,746 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:46:21,747 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 03:46:21,748 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:46:21,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:46:21,751 INFO L82 PathProgramCache]: Analyzing trace with hash 133394385, now seen corresponding path program 1 times [2020-12-22 03:46:21,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:46:21,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048618798] [2020-12-22 03:46:21,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:46:21,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 03:46:21,896 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 03:46:22,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 03:46:22,004 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 03:46:22,064 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-22 03:46:22,064 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 03:46:22,066 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 03:46:22,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 03:46:22 BoogieIcfgContainer [2020-12-22 03:46:22,123 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 03:46:22,125 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 03:46:22,125 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 03:46:22,125 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 03:46:22,126 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:46:21" (3/4) ... [2020-12-22 03:46:22,130 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-22 03:46:22,131 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 03:46:22,136 INFO L168 Benchmark]: Toolchain (without parser) took 2581.62 ms. Allocated memory is still 159.4 MB. Free memory was 133.9 MB in the beginning and 58.1 MB in the end (delta: 75.7 MB). Peak memory consumption was 75.5 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:22,138 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 159.4 MB. Free memory is still 132.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 03:46:22,140 INFO L168 Benchmark]: CACSL2BoogieTranslator took 564.97 ms. Allocated memory is still 159.4 MB. Free memory was 133.6 MB in the beginning and 120.7 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:22,142 INFO L168 Benchmark]: Boogie Procedure Inliner took 102.84 ms. Allocated memory is still 159.4 MB. Free memory was 120.5 MB in the beginning and 118.1 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:22,143 INFO L168 Benchmark]: Boogie Preprocessor took 89.90 ms. Allocated memory is still 159.4 MB. Free memory was 118.1 MB in the beginning and 116.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:22,145 INFO L168 Benchmark]: RCFGBuilder took 912.08 ms. Allocated memory is still 159.4 MB. Free memory was 116.3 MB in the beginning and 85.9 MB in the end (delta: 30.4 MB). Peak memory consumption was 30.4 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:22,146 INFO L168 Benchmark]: TraceAbstraction took 886.64 ms. Allocated memory is still 159.4 MB. Free memory was 85.4 MB in the beginning and 58.6 MB in the end (delta: 26.8 MB). Peak memory consumption was 27.3 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:22,149 INFO L168 Benchmark]: Witness Printer took 5.94 ms. Allocated memory is still 159.4 MB. Free memory was 58.6 MB in the beginning and 58.1 MB in the end (delta: 460.8 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 03:46:22,167 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 159.4 MB. Free memory is still 132.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 564.97 ms. Allocated memory is still 159.4 MB. Free memory was 133.6 MB in the beginning and 120.7 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 102.84 ms. Allocated memory is still 159.4 MB. Free memory was 120.5 MB in the beginning and 118.1 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 89.90 ms. Allocated memory is still 159.4 MB. Free memory was 118.1 MB in the beginning and 116.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 912.08 ms. Allocated memory is still 159.4 MB. Free memory was 116.3 MB in the beginning and 85.9 MB in the end (delta: 30.4 MB). Peak memory consumption was 30.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 886.64 ms. Allocated memory is still 159.4 MB. Free memory was 85.4 MB in the beginning and 58.6 MB in the end (delta: 26.8 MB). Peak memory consumption was 27.3 MB. Max. memory is 8.0 GB. * Witness Printer took 5.94 ms. Allocated memory is still 159.4 MB. Free memory was 58.6 MB in the beginning and 58.1 MB in the end (delta: 460.8 kB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 178]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 46, overapproximation of someUnaryDOUBLEoperation at line 22, overapproximation of someBinaryArithmeticDOUBLEoperation at line 47, overapproximation of bitwiseAnd at line 41, overapproximation of someBinaryDOUBLEComparisonOperation at line 18, overapproximation of bitwiseXor at line 42. Possible FailurePath: [L20-L23] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [one_fmod=1, Zero_fmod={9:0}] [L172] double x = 1.0 / 0.0; [L173] double y = __VERIFIER_nondet_double(); [L26] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L27] __uint32_t lx, ly, lz; VAL [one_fmod=1, Zero_fmod={9:0}] [L30] ieee_double_shape_type ew_u; [L31] ew_u.value = (x) [L32] EXPR ew_u.parts.msw [L32] (hx) = ew_u.parts.msw [L33] EXPR ew_u.parts.lsw [L33] (lx) = ew_u.parts.lsw [L36] ieee_double_shape_type ew_u; [L37] ew_u.value = (y) [L38] EXPR ew_u.parts.msw [L38] (hy) = ew_u.parts.msw [L39] EXPR ew_u.parts.lsw [L39] (ly) = ew_u.parts.lsw [L41] sx = hx & 0x80000000 [L42] hx ^= sx [L43] hy &= 0x7fffffff VAL [one_fmod=1, Zero_fmod={9:0}] [L45-L46] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L47] return (x * y) / (x * y); VAL [one_fmod=1, Zero_fmod={9:0}] [L174] double res = fmod_double(x, y); [L18] return x != x; VAL [one_fmod=1, Zero_fmod={9:0}] [L177] COND TRUE !isnan_double(res) [L178] reach_error() VAL [one_fmod=1, Zero_fmod={9:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 55 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 81 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred 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, 0.0s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 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...