/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 22:36:14,415 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 22:36:14,418 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 22:36:14,453 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-23 22:36:14,465 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 22:36:14,466 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 22:36:14,468 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 22:36:14,469 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 22:36:14,471 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 22:36:14,472 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 22:36:14,492 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 22:36:14,495 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 22:36:14,502 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 22:36:14,507 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 22:36:14,513 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 22:36:14,514 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 22:36:14,517 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 22:36:14,535 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 22:36:14,538 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 22:36:14,541 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 22:36:14,542 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 22:36:14,560 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 22:36:14,560 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 22:36:14,562 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 22:36:14,562 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 22:36:14,562 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 22:36:14,563 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 22:36:14,563 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 22:36:14,563 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 22:36:14,563 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 22:36:14,563 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 22:36:14,564 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 22:36:14,564 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 22:36:14,564 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 22:36:14,564 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 22:36:14,565 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 22:36:14,565 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 22:36:14,565 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 22:36:14,565 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 22:36:14,565 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 22:36:14,566 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 22:36:14,566 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 22:36:14,566 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 22:36:14,566 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-23 22:36:14,935 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 22:36:14,958 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 22:36:14,961 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 22:36:14,963 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 22:36:14,963 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 22:36:14,964 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2021-02-23 22:36:15,035 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73512842c/82926683256f402b96ea849b154c3a0a/FLAG312578994 [2021-02-23 22:36:15,589 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 22:36:15,590 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2021-02-23 22:36:15,601 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73512842c/82926683256f402b96ea849b154c3a0a/FLAG312578994 [2021-02-23 22:36:15,926 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73512842c/82926683256f402b96ea849b154c3a0a [2021-02-23 22:36:15,929 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 22:36:15,943 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 22:36:15,944 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 22:36:15,945 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 22:36:15,948 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 22:36:15,949 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 10:36:15" (1/1) ... [2021-02-23 22:36:15,951 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fb83a42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:36:15, skipping insertion in model container [2021-02-23 22:36:15,951 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 10:36:15" (1/1) ... [2021-02-23 22:36:15,959 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 22:36:15,979 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 22:36:16,181 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_1131b.c[2947,2960] [2021-02-23 22:36:16,185 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 22:36:16,222 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 22:36:16,307 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_1131b.c[2947,2960] [2021-02-23 22:36:16,309 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 22:36:16,337 INFO L208 MainTranslator]: Completed translation [2021-02-23 22:36:16,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:36:16 WrapperNode [2021-02-23 22:36:16,338 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 22:36:16,340 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 22:36:16,340 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 22:36:16,340 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 22:36:16,354 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:36:16" (1/1) ... [2021-02-23 22:36:16,355 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:36:16" (1/1) ... [2021-02-23 22:36:16,380 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:36:16" (1/1) ... [2021-02-23 22:36:16,380 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:36:16" (1/1) ... [2021-02-23 22:36:16,412 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:36:16" (1/1) ... [2021-02-23 22:36:16,427 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:36:16" (1/1) ... [2021-02-23 22:36:16,433 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:36:16" (1/1) ... [2021-02-23 22:36:16,442 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 22:36:16,443 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 22:36:16,443 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 22:36:16,444 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 22:36:16,458 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:36:16" (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 22:36:16,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 22:36:16,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 22:36:16,592 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 22:36:16,592 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2021-02-23 22:36:16,592 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_float [2021-02-23 22:36:16,592 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 22:36:16,592 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 22:36:16,592 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 22:36:16,593 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 22:36:16,593 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 22:36:16,593 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2021-02-23 22:36:16,593 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2021-02-23 22:36:16,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-23 22:36:16,594 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 22:36:16,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 22:36:16,594 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-23 22:36:16,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 22:36:16,594 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_float [2021-02-23 22:36:16,595 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 22:36:16,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 22:36:16,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 22:36:16,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-02-23 22:36:16,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 22:36:17,154 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 22:36:17,155 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-02-23 22:36:17,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 10:36:17 BoogieIcfgContainer [2021-02-23 22:36:17,159 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 22:36:17,161 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 22:36:17,161 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 22:36:17,164 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 22:36:17,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 10:36:15" (1/3) ... [2021-02-23 22:36:17,165 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f90b065 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 10:36:17, skipping insertion in model container [2021-02-23 22:36:17,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:36:16" (2/3) ... [2021-02-23 22:36:17,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f90b065 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 10:36:17, skipping insertion in model container [2021-02-23 22:36:17,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 10:36:17" (3/3) ... [2021-02-23 22:36:17,168 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1131b.c [2021-02-23 22:36:17,175 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 22:36:17,180 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 22:36:17,200 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 22:36:17,226 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 22:36:17,226 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 22:36:17,226 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-23 22:36:17,226 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 22:36:17,226 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 22:36:17,226 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 22:36:17,227 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 22:36:17,227 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 22:36:17,247 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states. [2021-02-23 22:36:17,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-02-23 22:36:17,260 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:36:17,261 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 22:36:17,262 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:36:17,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:36:17,269 INFO L82 PathProgramCache]: Analyzing trace with hash 1375230170, now seen corresponding path program 1 times [2021-02-23 22:36:17,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:36:17,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [212818956] [2021-02-23 22:36:17,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:36:17,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:36:17,491 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:17,492 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:36:17,493 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:17,494 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:36:17,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:36:17,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:36:17,638 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:17,640 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:36:17,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-02-23 22:36:17,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:36:17,666 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:17,667 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:36:17,668 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:17,668 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:36:17,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-02-23 22:36:17,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:36:17,680 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:17,680 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:36:17,681 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:17,682 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:36:17,699 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 22:36:17,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [212818956] [2021-02-23 22:36:17,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 22:36:17,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 22:36:17,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645702098] [2021-02-23 22:36:17,709 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 22:36:17,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:36:17,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 22:36:17,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 22:36:17,728 INFO L87 Difference]: Start difference. First operand 157 states. Second operand 4 states. [2021-02-23 22:36:18,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:36:18,313 INFO L93 Difference]: Finished difference Result 291 states and 354 transitions. [2021-02-23 22:36:18,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 22:36:18,316 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2021-02-23 22:36:18,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:36:18,328 INFO L225 Difference]: With dead ends: 291 [2021-02-23 22:36:18,329 INFO L226 Difference]: Without dead ends: 150 [2021-02-23 22:36:18,334 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 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 22:36:18,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-02-23 22:36:18,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2021-02-23 22:36:18,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2021-02-23 22:36:18,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 165 transitions. [2021-02-23 22:36:18,394 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 165 transitions. Word has length 54 [2021-02-23 22:36:18,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:36:18,395 INFO L480 AbstractCegarLoop]: Abstraction has 150 states and 165 transitions. [2021-02-23 22:36:18,395 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 22:36:18,395 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 165 transitions. [2021-02-23 22:36:18,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-02-23 22:36:18,398 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:36:18,398 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, 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 22:36:18,399 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 22:36:18,399 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:36:18,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:36:18,400 INFO L82 PathProgramCache]: Analyzing trace with hash 1426054672, now seen corresponding path program 1 times [2021-02-23 22:36:18,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:36:18,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2022003327] [2021-02-23 22:36:18,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:36:18,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 22:36:18,576 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 22:36:18,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 22:36:18,647 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 22:36:18,692 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 22:36:18,692 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 22:36:18,693 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 22:36:18,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 10:36:18 BoogieIcfgContainer [2021-02-23 22:36:18,778 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 22:36:18,780 INFO L168 Benchmark]: Toolchain (without parser) took 2848.45 ms. Allocated memory was 152.0 MB in the beginning and 182.5 MB in the end (delta: 30.4 MB). Free memory was 108.6 MB in the beginning and 150.1 MB in the end (delta: -41.4 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 22:36:18,781 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 152.0 MB. Free memory is still 125.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 22:36:18,781 INFO L168 Benchmark]: CACSL2BoogieTranslator took 393.99 ms. Allocated memory is still 152.0 MB. Free memory was 107.6 MB in the beginning and 132.9 MB in the end (delta: -25.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-02-23 22:36:18,783 INFO L168 Benchmark]: Boogie Preprocessor took 102.79 ms. Allocated memory is still 152.0 MB. Free memory was 132.9 MB in the beginning and 130.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-23 22:36:18,784 INFO L168 Benchmark]: RCFGBuilder took 715.57 ms. Allocated memory is still 152.0 MB. Free memory was 130.8 MB in the beginning and 101.4 MB in the end (delta: 29.3 MB). Peak memory consumption was 30.1 MB. Max. memory is 8.0 GB. [2021-02-23 22:36:18,786 INFO L168 Benchmark]: TraceAbstraction took 1617.09 ms. Allocated memory was 152.0 MB in the beginning and 182.5 MB in the end (delta: 30.4 MB). Free memory was 100.8 MB in the beginning and 150.1 MB in the end (delta: -49.3 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 22:36:18,794 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 152.0 MB. Free memory is still 125.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 393.99 ms. Allocated memory is still 152.0 MB. Free memory was 107.6 MB in the beginning and 132.9 MB in the end (delta: -25.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 102.79 ms. Allocated memory is still 152.0 MB. Free memory was 132.9 MB in the beginning and 130.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 715.57 ms. Allocated memory is still 152.0 MB. Free memory was 130.8 MB in the beginning and 101.4 MB in the end (delta: 29.3 MB). Peak memory consumption was 30.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1617.09 ms. Allocated memory was 152.0 MB in the beginning and 182.5 MB in the end (delta: 30.4 MB). Free memory was 100.8 MB in the beginning and 150.1 MB in the end (delta: -49.3 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 137]: 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 136, overapproximation of someUnaryDOUBLEoperation at line 16, overapproximation of bitwiseAnd at line 34, overapproximation of someBinaryArithmeticFLOAToperation at line 37, overapproximation of bitwiseXor at line 33. Possible FailurePath: [L14-L17] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [\old(one_fmod)=4294967309, \old(Zero_fmod)=4294967300, \old(Zero_fmod)=4294967308, one_fmod=1, Zero_fmod={9:0}] [L128] float x = __VERIFIER_nondet_float(); VAL [__VERIFIER_nondet_float()=4294967303, one_fmod=1, x=4294967303, Zero_fmod={9:0}] [L129] float y = -1.0f / 0.0f; VAL [one_fmod=1, x=4294967303, Zero_fmod={9:0}] [L131] CALL isfinite_float(x) VAL [\old(x)=4294967303, one_fmod=1, Zero_fmod={9:0}] [L111] __int32_t ix; VAL [\old(x)=4294967303, one_fmod=1, x=4294967303, Zero_fmod={9:0}] [L113] ieee_float_shape_type gf_u; VAL [\old(x)=4294967303, gf_u={10:0}, one_fmod=1, x=4294967303, Zero_fmod={9:0}] [L114] gf_u.value = (x) VAL [\old(x)=4294967303, gf_u={10:0}, one_fmod=1, x=4294967303, Zero_fmod={9:0}] [L115] EXPR gf_u.word VAL [\old(x)=4294967303, gf_u={10:0}, gf_u.word=0, one_fmod=1, x=4294967303, Zero_fmod={9:0}] [L115] (ix) = gf_u.word VAL [\old(x)=4294967303, gf_u={10:0}, gf_u.word=0, ix=0, one_fmod=1, x=4294967303, Zero_fmod={9:0}] [L117] ix &= 0x7fffffff VAL [\old(x)=4294967303, one_fmod=1, x=4294967303, Zero_fmod={9:0}] [L118] return (((ix) < 0x7f800000L)); VAL [\old(x)=4294967303, \result=1, ix=0, one_fmod=1, x=4294967303, Zero_fmod={9:0}] [L131] RET isfinite_float(x) VAL [isfinite_float(x)=1, one_fmod=1, x=4294967303, Zero_fmod={9:0}] [L131] COND TRUE isfinite_float(x) VAL [isfinite_float(x)=1, one_fmod=1, x=4294967303, Zero_fmod={9:0}] [L133] CALL, EXPR fmod_float(x, y) VAL [\old(x)=4294967303, \old(y)=4294967298, one_fmod=1, Zero_fmod={9:0}] [L20] __int32_t n, hx, hy, hz, ix, iy, sx, i; VAL [\old(x)=4294967303, \old(y)=4294967298, one_fmod=1, x=4294967303, y=4294967298, Zero_fmod={9:0}] [L23] ieee_float_shape_type gf_u; VAL [\old(x)=4294967303, \old(y)=4294967298, gf_u={11:0}, one_fmod=1, x=4294967303, y=4294967298, Zero_fmod={9:0}] [L24] gf_u.value = (x) VAL [\old(x)=4294967303, \old(y)=4294967298, gf_u={11:0}, one_fmod=1, x=4294967303, y=4294967298, Zero_fmod={9:0}] [L25] EXPR gf_u.word VAL [\old(x)=4294967303, \old(y)=4294967298, gf_u={11:0}, gf_u.word=4294967294, one_fmod=1, x=4294967303, y=4294967298, Zero_fmod={9:0}] [L25] (hx) = gf_u.word VAL [\old(x)=4294967303, \old(y)=4294967298, gf_u={11:0}, gf_u.word=4294967294, hx=-2, one_fmod=1, x=4294967303, y=4294967298, Zero_fmod={9:0}] [L28] ieee_float_shape_type gf_u; VAL [\old(x)=4294967303, \old(y)=4294967298, gf_u={3:0}, hx=-2, one_fmod=1, x=4294967303, y=4294967298, Zero_fmod={9:0}] [L29] gf_u.value = (y) VAL [\old(x)=4294967303, \old(y)=4294967298, gf_u={3:0}, hx=-2, one_fmod=1, x=4294967303, y=4294967298, Zero_fmod={9:0}] [L30] EXPR gf_u.word VAL [\old(x)=4294967303, \old(y)=4294967298, gf_u={3:0}, gf_u.word=0, hx=-2, one_fmod=1, x=4294967303, y=4294967298, Zero_fmod={9:0}] [L30] (hy) = gf_u.word VAL [\old(x)=4294967303, \old(y)=4294967298, gf_u={3:0}, gf_u.word=0, hx=-2, hy=0, one_fmod=1, x=4294967303, y=4294967298, Zero_fmod={9:0}] [L32] sx = hx & 0x80000000 VAL [\old(x)=4294967303, \old(y)=4294967298, hx=-2, hy=0, one_fmod=1, sx=13, x=4294967303, y=4294967298, Zero_fmod={9:0}] [L33] hx ^= sx VAL [\old(x)=4294967303, \old(y)=4294967298, hy=0, one_fmod=1, sx=13, x=4294967303, y=4294967298, Zero_fmod={9:0}] [L34] hy &= 0x7fffffff VAL [\old(x)=4294967303, \old(y)=4294967298, one_fmod=1, sx=13, x=4294967303, y=4294967298, Zero_fmod={9:0}] [L36] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) VAL [\old(x)=4294967303, \old(y)=4294967298, hx=2139095040, hy=0, one_fmod=1, sx=13, x=4294967303, y=4294967298, Zero_fmod={9:0}] [L37] return (x * y) / (x * y); VAL [\old(x)=4294967303, \old(y)=4294967298, hx=2139095040, hy=0, one_fmod=1, sx=13, x=4294967303, y=4294967298, Zero_fmod={9:0}] [L133] RET, EXPR fmod_float(x, y) VAL [fmod_float(x, y)=4294967307, one_fmod=1, x=4294967303, y=4294967298, Zero_fmod={9:0}] [L133] float res = fmod_float(x, y); VAL [fmod_float(x, y)=4294967307, one_fmod=1, res=4294967307, x=4294967303, y=4294967298, Zero_fmod={9:0}] [L136] COND TRUE res != x VAL [one_fmod=1, res=4294967307, x=4294967303, y=4294967298, Zero_fmod={9:0}] [L137] reach_error() VAL [one_fmod=1, res=4294967307, x=4294967303, y=4294967298, Zero_fmod={9:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 160 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 169 SDtfs, 31 SDslu, 123 SDs, 0 SdLazy, 185 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=157occurred 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, 0.2s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 129 NumberOfCodeBlocks, 129 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 53 ConstructedInterpolants, 0 QuantifiedInterpolants, 6148 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...