/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/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1031.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 20:25:16,197 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 20:25:16,200 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 20:25:16,256 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 20:25:16,257 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 20:25:16,261 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 20:25:16,265 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 20:25:16,273 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 20:25:16,276 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 20:25:16,284 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 20:25:16,286 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 20:25:16,287 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 20:25:16,288 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 20:25:16,291 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 20:25:16,293 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 20:25:16,295 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 20:25:16,296 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 20:25:16,301 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 20:25:16,309 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 20:25:16,314 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 20:25:16,318 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 20:25:16,320 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 20:25:16,322 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 20:25:16,324 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 20:25:16,337 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 20:25:16,350 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 20:25:16,351 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 20:25:16,351 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 20:25:16,353 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 20:25:16,376 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 20:25:16,376 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 20:25:16,393 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 20:25:16,394 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 20:25:16,394 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 20:25:16,394 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 20:25:16,394 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 20:25:16,394 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 20:25:16,395 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 20:25:16,395 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 20:25:16,396 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 20:25:16,396 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 20:25:16,397 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 20:25:16,397 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 20:25:16,397 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 20:25:16,397 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 20:25:16,398 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 20:25:16,398 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 20:25:16,398 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:25:16,398 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 20:25:16,398 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 20:25:16,399 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 20:25:16,399 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 20:25:16,891 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 20:25:16,922 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 20:25:16,926 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 20:25:16,927 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 20:25:16,928 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 20:25:16,929 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1031.c [2020-10-23 20:25:17,025 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c38f7ec8/15ace7cb44d840418703825d1a01778c/FLAG0c56b1164 [2020-10-23 20:25:17,772 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 20:25:17,773 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1031.c [2020-10-23 20:25:17,782 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c38f7ec8/15ace7cb44d840418703825d1a01778c/FLAG0c56b1164 [2020-10-23 20:25:18,109 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c38f7ec8/15ace7cb44d840418703825d1a01778c [2020-10-23 20:25:18,112 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 20:25:18,120 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 20:25:18,122 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 20:25:18,122 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 20:25:18,126 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 20:25:18,127 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:25:18" (1/1) ... [2020-10-23 20:25:18,131 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17d797c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:18, skipping insertion in model container [2020-10-23 20:25:18,131 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:25:18" (1/1) ... [2020-10-23 20:25:18,140 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 20:25:18,161 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 20:25:18,387 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:25:18,397 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 20:25:18,425 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:25:18,443 INFO L208 MainTranslator]: Completed translation [2020-10-23 20:25:18,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:18 WrapperNode [2020-10-23 20:25:18,444 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 20:25:18,445 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 20:25:18,445 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 20:25:18,446 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 20:25:18,460 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:18" (1/1) ... [2020-10-23 20:25:18,461 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:18" (1/1) ... [2020-10-23 20:25:18,470 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:18" (1/1) ... [2020-10-23 20:25:18,471 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:18" (1/1) ... [2020-10-23 20:25:18,483 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:18" (1/1) ... [2020-10-23 20:25:18,488 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:18" (1/1) ... [2020-10-23 20:25:18,490 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:18" (1/1) ... [2020-10-23 20:25:18,493 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 20:25:18,494 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 20:25:18,495 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 20:25:18,495 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 20:25:18,496 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:18" (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 20:25:18,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 20:25:18,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 20:25:18,579 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 20:25:18,580 INFO L138 BoogieDeclarations]: Found implementation of procedure round_float [2020-10-23 20:25:18,580 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2020-10-23 20:25:18,580 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 20:25:18,580 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 20:25:18,581 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 20:25:18,581 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 20:25:18,581 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 20:25:18,582 INFO L130 BoogieDeclarations]: Found specification of procedure round_float [2020-10-23 20:25:18,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-23 20:25:18,582 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 20:25:18,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 20:25:18,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 20:25:18,583 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-23 20:25:18,584 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2020-10-23 20:25:18,584 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 20:25:18,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 20:25:18,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 20:25:18,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 20:25:19,071 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 20:25:19,072 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-23 20:25:19,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:25:19 BoogieIcfgContainer [2020-10-23 20:25:19,074 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 20:25:19,076 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 20:25:19,076 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 20:25:19,080 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 20:25:19,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:25:18" (1/3) ... [2020-10-23 20:25:19,081 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22dc7b79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:25:19, skipping insertion in model container [2020-10-23 20:25:19,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:18" (2/3) ... [2020-10-23 20:25:19,082 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22dc7b79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:25:19, skipping insertion in model container [2020-10-23 20:25:19,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:25:19" (3/3) ... [2020-10-23 20:25:19,083 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1031.c [2020-10-23 20:25:19,098 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 20:25:19,103 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 20:25:19,119 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 20:25:19,151 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 20:25:19,151 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 20:25:19,151 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 20:25:19,151 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 20:25:19,151 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 20:25:19,152 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 20:25:19,152 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 20:25:19,152 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 20:25:19,171 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-10-23 20:25:19,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-23 20:25:19,183 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:25:19,184 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:25:19,185 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:25:19,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:25:19,193 INFO L82 PathProgramCache]: Analyzing trace with hash -1768694675, now seen corresponding path program 1 times [2020-10-23 20:25:19,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:25:19,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1853941650] [2020-10-23 20:25:19,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:25:19,291 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:25:19,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:19,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:25:19,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:19,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-23 20:25:19,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:19,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:25:19,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:19,618 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 20:25:19,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1853941650] [2020-10-23 20:25:19,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:25:19,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 20:25:19,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350178039] [2020-10-23 20:25:19,629 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 20:25:19,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:25:19,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 20:25:19,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 20:25:19,649 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 4 states. [2020-10-23 20:25:20,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:25:20,002 INFO L93 Difference]: Finished difference Result 132 states and 151 transitions. [2020-10-23 20:25:20,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-23 20:25:20,004 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-10-23 20:25:20,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:25:20,014 INFO L225 Difference]: With dead ends: 132 [2020-10-23 20:25:20,015 INFO L226 Difference]: Without dead ends: 67 [2020-10-23 20:25:20,019 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-23 20:25:20,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-23 20:25:20,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2020-10-23 20:25:20,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-23 20:25:20,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2020-10-23 20:25:20,075 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 36 [2020-10-23 20:25:20,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:25:20,076 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2020-10-23 20:25:20,076 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 20:25:20,076 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2020-10-23 20:25:20,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-23 20:25:20,078 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:25:20,079 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:25:20,079 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 20:25:20,079 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:25:20,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:25:20,080 INFO L82 PathProgramCache]: Analyzing trace with hash 1952372187, now seen corresponding path program 1 times [2020-10-23 20:25:20,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:25:20,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1214607085] [2020-10-23 20:25:20,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:25:20,085 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:25:20,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:25:20,144 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:25:20,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:25:20,205 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:25:20,252 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 20:25:20,252 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 20:25:20,253 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 20:25:20,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:25:20 BoogieIcfgContainer [2020-10-23 20:25:20,272 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 20:25:20,275 INFO L168 Benchmark]: Toolchain (without parser) took 2159.46 ms. Allocated memory is still 152.0 MB. Free memory was 128.7 MB in the beginning and 112.2 MB in the end (delta: 16.5 MB). Peak memory consumption was 17.3 MB. Max. memory is 8.0 GB. [2020-10-23 20:25:20,276 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 125.8 MB. Free memory is still 103.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 20:25:20,277 INFO L168 Benchmark]: CACSL2BoogieTranslator took 322.57 ms. Allocated memory is still 152.0 MB. Free memory was 128.2 MB in the beginning and 118.1 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-23 20:25:20,278 INFO L168 Benchmark]: Boogie Preprocessor took 48.40 ms. Allocated memory is still 152.0 MB. Free memory was 118.1 MB in the beginning and 116.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-23 20:25:20,279 INFO L168 Benchmark]: RCFGBuilder took 579.68 ms. Allocated memory is still 152.0 MB. Free memory was 116.4 MB in the beginning and 130.0 MB in the end (delta: -13.6 MB). Peak memory consumption was 18.4 MB. Max. memory is 8.0 GB. [2020-10-23 20:25:20,280 INFO L168 Benchmark]: TraceAbstraction took 1196.49 ms. Allocated memory is still 152.0 MB. Free memory was 129.4 MB in the beginning and 112.2 MB in the end (delta: 17.2 MB). Peak memory consumption was 16.7 MB. Max. memory is 8.0 GB. [2020-10-23 20:25:20,283 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 125.8 MB. Free memory is still 103.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 322.57 ms. Allocated memory is still 152.0 MB. Free memory was 128.2 MB in the beginning and 118.1 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 48.40 ms. Allocated memory is still 152.0 MB. Free memory was 118.1 MB in the beginning and 116.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 579.68 ms. Allocated memory is still 152.0 MB. Free memory was 116.4 MB in the beginning and 130.0 MB in the end (delta: -13.6 MB). Peak memory consumption was 18.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1196.49 ms. Allocated memory is still 152.0 MB. Free memory was 129.4 MB in the beginning and 112.2 MB in the end (delta: 17.2 MB). Peak memory consumption was 16.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 57, overapproximation of someBinaryArithmeticFLOAToperation at line 44, overapproximation of bitwiseAnd at line 24. Possible FailurePath: [L67] float x = 0.0f / 0.0f; [L68] CALL, EXPR round_float(x) [L14] __uint32_t w; [L16] int exponent_less_127; [L19] ieee_float_shape_type gf_u; [L20] gf_u.value = (x) [L21] EXPR gf_u.word [L21] (w) = gf_u.word [L24] exponent_less_127 = (int)((w & 0x7f800000) >> 23) - 127 [L26] COND FALSE !(exponent_less_127 < 23) [L42] COND TRUE exponent_less_127 == 128 [L44] return x + x; [L68] RET, EXPR round_float(x) [L68] float res = round_float(x); [L71] CALL, EXPR isnan_float(res) [L57] return x != x; [L71] RET, EXPR isnan_float(res) [L71] COND TRUE !isnan_float(res) [L72] CALL reach_error() [L3] __assert_fail("0", "float_req_bl_1031.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 75 SDtfs, 17 SDslu, 48 SDs, 0 SdLazy, 81 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=76occurred 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: No data available, 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...