/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_1092a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 17:38:01,304 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 17:38:01,307 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 17:38:01,340 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-23 17:38:01,353 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 17:38:01,354 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 17:38:01,355 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 17:38:01,357 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 17:38:01,358 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 17:38:01,359 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 17:38:01,361 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 17:38:01,372 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 17:38:01,374 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 17:38:01,376 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 17:38:01,377 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 17:38:01,378 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 17:38:01,382 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 17:38:01,392 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 17:38:01,393 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 17:38:01,394 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 17:38:01,395 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 17:38:01,407 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 17:38:01,407 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 17:38:01,408 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 17:38:01,409 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 17:38:01,409 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 17:38:01,409 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 17:38:01,410 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 17:38:01,410 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 17:38:01,410 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 17:38:01,411 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 17:38:01,411 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 17:38:01,411 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 17:38:01,411 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 17:38:01,412 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 17:38:01,412 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 17:38:01,412 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 17:38:01,412 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 17:38:01,413 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 17:38:01,413 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 17:38:01,413 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 17:38:01,414 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 17:38:01,414 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 17:38:01,414 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 17:38:01,747 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 17:38:01,781 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 17:38:01,785 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 17:38:01,786 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 17:38:01,787 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 17:38:01,788 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1092a.c [2021-02-23 17:38:01,881 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1885d5b13/6a8aa3cf68044e17a356f929176684aa/FLAG0e908e72e [2021-02-23 17:38:02,486 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 17:38:02,486 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1092a.c [2021-02-23 17:38:02,494 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1885d5b13/6a8aa3cf68044e17a356f929176684aa/FLAG0e908e72e [2021-02-23 17:38:02,871 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1885d5b13/6a8aa3cf68044e17a356f929176684aa [2021-02-23 17:38:02,876 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 17:38:02,892 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 17:38:02,898 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 17:38:02,898 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 17:38:02,902 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 17:38:02,903 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 05:38:02" (1/1) ... [2021-02-23 17:38:02,904 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5640a1bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:38:02, skipping insertion in model container [2021-02-23 17:38:02,905 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 05:38:02" (1/1) ... [2021-02-23 17:38:02,914 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 17:38:02,936 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 17:38:03,198 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1092a.c[1753,1766] [2021-02-23 17:38:03,202 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 17:38:03,219 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 17:38:03,280 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1092a.c[1753,1766] [2021-02-23 17:38:03,281 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 17:38:03,301 INFO L208 MainTranslator]: Completed translation [2021-02-23 17:38:03,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:38:03 WrapperNode [2021-02-23 17:38:03,302 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 17:38:03,303 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 17:38:03,303 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 17:38:03,304 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 17:38:03,317 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:38:03" (1/1) ... [2021-02-23 17:38:03,317 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:38:03" (1/1) ... [2021-02-23 17:38:03,336 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:38:03" (1/1) ... [2021-02-23 17:38:03,337 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:38:03" (1/1) ... [2021-02-23 17:38:03,360 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:38:03" (1/1) ... [2021-02-23 17:38:03,369 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:38:03" (1/1) ... [2021-02-23 17:38:03,376 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:38:03" (1/1) ... [2021-02-23 17:38:03,384 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 17:38:03,387 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 17:38:03,387 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 17:38:03,387 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 17:38:03,388 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:38:03" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 17:38:03,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 17:38:03,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 17:38:03,499 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 17:38:03,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_float [2021-02-23 17:38:03,499 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2021-02-23 17:38:03,500 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 17:38:03,500 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 17:38:03,500 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 17:38:03,501 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 17:38:03,501 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 17:38:03,501 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_float [2021-02-23 17:38:03,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-23 17:38:03,502 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 17:38:03,502 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 17:38:03,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 17:38:03,503 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-23 17:38:03,504 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2021-02-23 17:38:03,504 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 17:38:03,506 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 17:38:03,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 17:38:03,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 17:38:03,928 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 17:38:03,928 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-02-23 17:38:03,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 05:38:03 BoogieIcfgContainer [2021-02-23 17:38:03,931 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 17:38:03,932 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 17:38:03,933 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 17:38:03,936 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 17:38:03,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 05:38:02" (1/3) ... [2021-02-23 17:38:03,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12b99332 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 05:38:03, skipping insertion in model container [2021-02-23 17:38:03,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:38:03" (2/3) ... [2021-02-23 17:38:03,939 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12b99332 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 05:38:03, skipping insertion in model container [2021-02-23 17:38:03,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 05:38:03" (3/3) ... [2021-02-23 17:38:03,941 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1092a.c [2021-02-23 17:38:03,947 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 17:38:03,952 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 17:38:03,970 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 17:38:03,993 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 17:38:03,994 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 17:38:03,994 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 17:38:03,994 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 17:38:03,994 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 17:38:03,994 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 17:38:03,995 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 17:38:03,995 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 17:38:04,016 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states. [2021-02-23 17:38:04,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-02-23 17:38:04,026 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:38:04,027 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] [2021-02-23 17:38:04,028 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:38:04,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:38:04,034 INFO L82 PathProgramCache]: Analyzing trace with hash 2098219990, now seen corresponding path program 1 times [2021-02-23 17:38:04,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:38:04,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [440466910] [2021-02-23 17:38:04,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:38:04,117 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:38:04,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:38:04,318 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:04,320 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:38:04,321 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:04,321 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:38:04,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:38:04,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:38:04,394 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:04,395 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:38:04,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 17:38:04,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:38:04,421 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:04,424 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:38:04,425 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:04,426 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:38:04,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 17:38:04,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [440466910] [2021-02-23 17:38:04,438 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:38:04,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 17:38:04,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397689980] [2021-02-23 17:38:04,443 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 17:38:04,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:38:04,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 17:38:04,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 17:38:04,460 INFO L87 Difference]: Start difference. First operand 91 states. Second operand 4 states. [2021-02-23 17:38:04,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:38:04,856 INFO L93 Difference]: Finished difference Result 161 states and 194 transitions. [2021-02-23 17:38:04,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 17:38:04,858 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2021-02-23 17:38:04,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:38:04,868 INFO L225 Difference]: With dead ends: 161 [2021-02-23 17:38:04,868 INFO L226 Difference]: Without dead ends: 83 [2021-02-23 17:38:04,872 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 [2021-02-23 17:38:04,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-02-23 17:38:04,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2021-02-23 17:38:04,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2021-02-23 17:38:04,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 92 transitions. [2021-02-23 17:38:04,926 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 92 transitions. Word has length 36 [2021-02-23 17:38:04,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:38:04,927 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 92 transitions. [2021-02-23 17:38:04,927 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 17:38:04,927 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 92 transitions. [2021-02-23 17:38:04,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-02-23 17:38:04,929 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:38:04,929 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] [2021-02-23 17:38:04,930 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 17:38:04,930 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:38:04,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:38:04,931 INFO L82 PathProgramCache]: Analyzing trace with hash -1457267459, now seen corresponding path program 1 times [2021-02-23 17:38:04,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:38:04,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1190347288] [2021-02-23 17:38:04,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:38:04,935 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:38:05,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 17:38:05,001 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 17:38:05,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 17:38:05,087 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 17:38:05,144 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 17:38:05,144 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 17:38:05,146 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 17:38:05,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 05:38:05 BoogieIcfgContainer [2021-02-23 17:38:05,163 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 17:38:05,166 INFO L168 Benchmark]: Toolchain (without parser) took 2286.66 ms. Allocated memory was 151.0 MB in the beginning and 183.5 MB in the end (delta: 32.5 MB). Free memory was 126.0 MB in the beginning and 145.5 MB in the end (delta: -19.5 MB). Peak memory consumption was 13.8 MB. Max. memory is 8.0 GB. [2021-02-23 17:38:05,166 INFO L168 Benchmark]: CDTParser took 0.99 ms. Allocated memory is still 151.0 MB. Free memory is still 125.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 17:38:05,167 INFO L168 Benchmark]: CACSL2BoogieTranslator took 404.59 ms. Allocated memory is still 151.0 MB. Free memory was 124.9 MB in the beginning and 114.4 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-23 17:38:05,168 INFO L168 Benchmark]: Boogie Preprocessor took 82.47 ms. Allocated memory is still 151.0 MB. Free memory was 114.4 MB in the beginning and 112.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-23 17:38:05,169 INFO L168 Benchmark]: RCFGBuilder took 544.08 ms. Allocated memory is still 151.0 MB. Free memory was 112.6 MB in the beginning and 124.2 MB in the end (delta: -11.6 MB). Peak memory consumption was 19.0 MB. Max. memory is 8.0 GB. [2021-02-23 17:38:05,170 INFO L168 Benchmark]: TraceAbstraction took 1231.10 ms. Allocated memory was 151.0 MB in the beginning and 183.5 MB in the end (delta: 32.5 MB). Free memory was 123.7 MB in the beginning and 145.5 MB in the end (delta: -21.9 MB). Peak memory consumption was 10.6 MB. Max. memory is 8.0 GB. [2021-02-23 17:38:05,174 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.99 ms. Allocated memory is still 151.0 MB. Free memory is still 125.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 404.59 ms. Allocated memory is still 151.0 MB. Free memory was 124.9 MB in the beginning and 114.4 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 82.47 ms. Allocated memory is still 151.0 MB. Free memory was 114.4 MB in the beginning and 112.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 544.08 ms. Allocated memory is still 151.0 MB. Free memory was 112.6 MB in the beginning and 124.2 MB in the end (delta: -11.6 MB). Peak memory consumption was 19.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1231.10 ms. Allocated memory was 151.0 MB in the beginning and 183.5 MB in the end (delta: 32.5 MB). Free memory was 123.7 MB in the beginning and 145.5 MB in the end (delta: -21.9 MB). Peak memory consumption was 10.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 83]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 82, overapproximation of bitwiseAnd at line 23, overapproximation of someUnaryFLOAToperation at line 78, overapproximation of someBinaryArithmeticFLOAToperation at line 46. Possible FailurePath: [L13] static const float huge_ceil = 1.0e30; [L78] float x = -0.0f; [L79] CALL, EXPR ceil_float(x) [L16] __int32_t i0, j0; [L17] __uint32_t i, ix; [L19] ieee_float_shape_type gf_u; [L20] gf_u.value = (x) [L21] EXPR gf_u.word [L21] (i0) = gf_u.word [L23] ix = (i0 & 0x7fffffff) [L24] j0 = (ix >> 23) - 0x7f [L25] COND FALSE !(j0 < 23) [L45] COND TRUE !((ix) < 0x7f800000L) [L46] return x + x; [L79] RET, EXPR ceil_float(x) [L79] float res = ceil_float(x); [L82] EXPR res == -0.0f && __signbit_float(res) == 1 [L82] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L83] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 94 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 96 SDtfs, 17 SDslu, 70 SDs, 0 SdLazy, 106 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=91occurred 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...