/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_1092b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 17:55:21,320 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 17:55:21,323 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 17:55:21,358 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 17:55:21,359 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 17:55:21,360 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 17:55:21,362 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 17:55:21,364 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 17:55:21,367 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 17:55:21,368 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 17:55:21,369 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 17:55:21,371 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 17:55:21,372 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 17:55:21,373 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 17:55:21,376 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 17:55:21,378 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 17:55:21,379 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 17:55:21,380 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 17:55:21,387 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 17:55:21,390 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 17:55:21,398 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 17:55:21,400 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 17:55:21,403 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 17:55:21,404 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 17:55:21,411 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 17:55:21,440 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 17:55:21,442 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 17:55:21,443 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 17:55:21,451 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 17:55:21,498 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 17:55:21,498 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 17:55:21,500 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-23 17:55:21,500 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-23 17:55:21,500 INFO L138 SettingsManager]: * Use SBE=true [2020-10-23 17:55:21,501 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 17:55:21,501 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 17:55:21,501 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 17:55:21,501 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 17:55:21,502 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 17:55:21,502 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 17:55:21,502 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 17:55:21,502 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 17:55:21,502 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 17:55:21,502 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 17:55:21,503 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 17:55:21,503 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 17:55:21,503 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 17:55:21,503 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-23 17:55:21,503 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 17:55:21,504 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 17:55:21,504 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 17:55:21,504 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 17:55:21,504 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-23 17:55:21,504 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-23 17:55:21,505 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-23 17:55:21,505 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-23 17:55:21,505 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 17:55:21,505 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-23 17:55:21,505 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 17:55:21,922 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 17:55:21,972 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 17:55:21,976 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 17:55:21,977 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 17:55:21,978 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 17:55:21,979 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1092b.c [2020-10-23 17:55:22,068 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cea8c6495/2851b9050fa04fb980f160208f032615/FLAGf26e117c1 [2020-10-23 17:55:22,670 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 17:55:22,670 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1092b.c [2020-10-23 17:55:22,680 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cea8c6495/2851b9050fa04fb980f160208f032615/FLAGf26e117c1 [2020-10-23 17:55:22,973 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cea8c6495/2851b9050fa04fb980f160208f032615 [2020-10-23 17:55:22,976 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 17:55:22,982 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 17:55:22,985 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 17:55:22,985 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 17:55:22,990 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 17:55:22,991 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 05:55:22" (1/1) ... [2020-10-23 17:55:23,000 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63360f35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:22, skipping insertion in model container [2020-10-23 17:55:23,002 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 05:55:22" (1/1) ... [2020-10-23 17:55:23,010 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 17:55:23,054 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 17:55:23,260 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 17:55:23,271 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 17:55:23,307 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 17:55:23,329 INFO L208 MainTranslator]: Completed translation [2020-10-23 17:55:23,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:23 WrapperNode [2020-10-23 17:55:23,330 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 17:55:23,331 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 17:55:23,331 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 17:55:23,332 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 17:55:23,371 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:23" (1/1) ... [2020-10-23 17:55:23,375 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:23" (1/1) ... [2020-10-23 17:55:23,406 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:23" (1/1) ... [2020-10-23 17:55:23,409 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:23" (1/1) ... [2020-10-23 17:55:23,434 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:23" (1/1) ... [2020-10-23 17:55:23,440 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:23" (1/1) ... [2020-10-23 17:55:23,443 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:23" (1/1) ... [2020-10-23 17:55:23,446 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 17:55:23,447 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 17:55:23,448 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 17:55:23,448 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 17:55:23,449 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:23" (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 17:55:23,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 17:55:23,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 17:55:23,535 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 17:55:23,535 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-10-23 17:55:23,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_double [2020-10-23 17:55:23,535 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 17:55:23,535 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 17:55:23,536 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 17:55:23,536 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 17:55:23,536 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 17:55:23,536 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-10-23 17:55:23,536 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_double [2020-10-23 17:55:23,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-23 17:55:23,537 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 17:55:23,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 17:55:23,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 17:55:23,537 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-23 17:55:23,537 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 17:55:23,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 17:55:23,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 17:55:23,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 17:55:24,030 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 17:55:24,031 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-23 17:55:24,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 05:55:24 BoogieIcfgContainer [2020-10-23 17:55:24,033 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 17:55:24,035 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 17:55:24,035 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 17:55:24,039 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 17:55:24,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 05:55:22" (1/3) ... [2020-10-23 17:55:24,040 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e806421 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 05:55:24, skipping insertion in model container [2020-10-23 17:55:24,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:23" (2/3) ... [2020-10-23 17:55:24,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e806421 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 05:55:24, skipping insertion in model container [2020-10-23 17:55:24,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 05:55:24" (3/3) ... [2020-10-23 17:55:24,042 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1092b.c [2020-10-23 17:55:24,056 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-23 17:55:24,062 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 17:55:24,076 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 17:55:24,105 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 17:55:24,105 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 17:55:24,105 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-23 17:55:24,106 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 17:55:24,106 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 17:55:24,106 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 17:55:24,106 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 17:55:24,106 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 17:55:24,125 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2020-10-23 17:55:24,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-23 17:55:24,132 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 17:55:24,133 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 17:55:24,134 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 17:55:24,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 17:55:24,141 INFO L82 PathProgramCache]: Analyzing trace with hash 478708887, now seen corresponding path program 1 times [2020-10-23 17:55:24,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 17:55:24,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934436998] [2020-10-23 17:55:24,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 17:55:24,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:55:24,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 17:55:24,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:55:24,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 17:55:24,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:55:24,517 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 17:55:24,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934436998] [2020-10-23 17:55:24,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 17:55:24,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 17:55:24,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338300485] [2020-10-23 17:55:24,526 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 17:55:24,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 17:55:24,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 17:55:24,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 17:55:24,543 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 4 states. [2020-10-23 17:55:24,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 17:55:24,869 INFO L93 Difference]: Finished difference Result 81 states and 120 transitions. [2020-10-23 17:55:24,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 17:55:24,872 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-10-23 17:55:24,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 17:55:24,882 INFO L225 Difference]: With dead ends: 81 [2020-10-23 17:55:24,882 INFO L226 Difference]: Without dead ends: 39 [2020-10-23 17:55:24,886 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 [2020-10-23 17:55:24,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-23 17:55:24,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-10-23 17:55:24,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-23 17:55:24,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 53 transitions. [2020-10-23 17:55:24,938 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 53 transitions. Word has length 19 [2020-10-23 17:55:24,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 17:55:24,939 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 53 transitions. [2020-10-23 17:55:24,939 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 17:55:24,939 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 53 transitions. [2020-10-23 17:55:24,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-23 17:55:24,941 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 17:55:24,941 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 17:55:24,941 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 17:55:24,941 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 17:55:24,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 17:55:24,942 INFO L82 PathProgramCache]: Analyzing trace with hash -1890348789, now seen corresponding path program 1 times [2020-10-23 17:55:24,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 17:55:24,943 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265433539] [2020-10-23 17:55:24,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 17:55:25,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 17:55:25,004 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 17:55:25,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 17:55:25,051 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 17:55:25,083 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-23 17:55:25,084 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 17:55:25,085 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 17:55:25,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 05:55:25 BoogieIcfgContainer [2020-10-23 17:55:25,139 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 17:55:25,143 INFO L168 Benchmark]: Toolchain (without parser) took 2162.82 ms. Allocated memory is still 151.0 MB. Free memory was 109.2 MB in the beginning and 60.5 MB in the end (delta: 48.7 MB). Peak memory consumption was 48.7 MB. Max. memory is 8.0 GB. [2020-10-23 17:55:25,144 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 126.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 17:55:25,144 INFO L168 Benchmark]: CACSL2BoogieTranslator took 345.47 ms. Allocated memory is still 151.0 MB. Free memory was 108.7 MB in the beginning and 126.0 MB in the end (delta: -17.4 MB). Peak memory consumption was 6.2 MB. Max. memory is 8.0 GB. [2020-10-23 17:55:25,146 INFO L168 Benchmark]: Boogie Preprocessor took 115.19 ms. Allocated memory is still 151.0 MB. Free memory was 126.0 MB in the beginning and 134.5 MB in the end (delta: -8.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-23 17:55:25,147 INFO L168 Benchmark]: RCFGBuilder took 585.53 ms. Allocated memory is still 151.0 MB. Free memory was 134.5 MB in the beginning and 112.4 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-10-23 17:55:25,148 INFO L168 Benchmark]: TraceAbstraction took 1104.48 ms. Allocated memory is still 151.0 MB. Free memory was 111.9 MB in the beginning and 60.5 MB in the end (delta: 51.4 MB). Peak memory consumption was 51.4 MB. Max. memory is 8.0 GB. [2020-10-23 17:55:25,155 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 151.0 MB. Free memory is still 126.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 345.47 ms. Allocated memory is still 151.0 MB. Free memory was 108.7 MB in the beginning and 126.0 MB in the end (delta: -17.4 MB). Peak memory consumption was 6.2 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 115.19 ms. Allocated memory is still 151.0 MB. Free memory was 126.0 MB in the beginning and 134.5 MB in the end (delta: -8.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 585.53 ms. Allocated memory is still 151.0 MB. Free memory was 134.5 MB in the beginning and 112.4 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1104.48 ms. Allocated memory is still 151.0 MB. Free memory was 111.9 MB in the beginning and 60.5 MB in the end (delta: 51.4 MB). Peak memory consumption was 51.4 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 43, overapproximation of bitwiseOr at line 44, overapproximation of bitwiseAnd at line 30, overapproximation of someBinaryDOUBLEComparisonOperation at line 97. Possible FailurePath: [L19] static const double huge_ceil = 1.0e300; VAL [\old(huge_ceil)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000006, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L93] double x = 0.0; VAL [huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=0] [L94] CALL, EXPR ceil_double(x) VAL [\old(x)=0, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L22] __int32_t i0, i1, j0; [L23] __uint32_t i, j; VAL [\old(x)=0, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=0] [L25] ieee_double_shape_type ew_u; [L26] ew_u.value = (x) [L27] EXPR ew_u.parts.msw [L27] (i0) = ew_u.parts.msw [L28] EXPR ew_u.parts.lsw [L28] (i1) = ew_u.parts.lsw [L30] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff VAL [\old(x)=0, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=-2, i1=-1, x=0] [L31] COND TRUE j0 < 20 VAL [\old(x)=0, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=-2, i1=-1, j0=0, x=0] [L32] COND FALSE !(j0 < 0) [L43] i = (0x000fffff) >> j0 VAL [\old(x)=0, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=-2, i1=-1, j0=0, x=0] [L44] COND TRUE ((i0 & i) | i1) == 0 [L45] return x; VAL [\old(x)=0, \result=0, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=-2, i1=-1, j0=0, x=0] [L94] RET, EXPR ceil_double(x) VAL [ceil_double(x)=0, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=0] [L94] double res = ceil_double(x); [L97] COND TRUE res != x VAL [huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, res=0, x=0] [L98] CALL reach_error() VAL [huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L3] __assert_fail("0", "double_req_bl_1092b.c", 3, "reach_error") VAL [huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 49 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 55 SDtfs, 6 SDslu, 49 SDs, 0 SdLazy, 53 SolverSat, 6 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=46occurred 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, 0.2s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 1134 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...