/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/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1071.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 03:55:20,437 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 03:55:20,441 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 03:55:20,498 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-24 03:55:20,543 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 03:55:20,546 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 03:55:20,548 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 03:55:20,550 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 03:55:20,554 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 03:55:20,556 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 03:55:20,563 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 03:55:20,572 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 03:55:20,574 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 03:55:20,576 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 03:55:20,578 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 03:55:20,580 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 03:55:20,589 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-24 03:55:20,602 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 03:55:20,603 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 03:55:20,604 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 03:55:20,609 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-24 03:55:20,632 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 03:55:20,633 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 03:55:20,637 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 03:55:20,637 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 03:55:20,638 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 03:55:20,638 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 03:55:20,638 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 03:55:20,638 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 03:55:20,639 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 03:55:20,639 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 03:55:20,640 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 03:55:20,641 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 03:55:20,641 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 03:55:20,642 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 03:55:20,642 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 03:55:20,642 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 03:55:20,643 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 03:55:20,643 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 03:55:20,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 03:55:20,644 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 03:55:20,644 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 03:55:20,644 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 03:55:20,644 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-24 03:55:20,645 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-24 03:55:21,054 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 03:55:21,089 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 03:55:21,092 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 03:55:21,093 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 03:55:21,094 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 03:55:21,095 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1071.c [2021-02-24 03:55:21,182 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1341e1f9e/26828ad3095d45a597d4b7bbedd58f43/FLAGa1df98022 [2021-02-24 03:55:21,755 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 03:55:21,756 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1071.c [2021-02-24 03:55:21,765 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1341e1f9e/26828ad3095d45a597d4b7bbedd58f43/FLAGa1df98022 [2021-02-24 03:55:22,131 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1341e1f9e/26828ad3095d45a597d4b7bbedd58f43 [2021-02-24 03:55:22,136 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 03:55:22,153 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 03:55:22,160 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 03:55:22,160 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 03:55:22,164 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 03:55:22,165 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 03:55:22" (1/1) ... [2021-02-24 03:55:22,167 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@713a46d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:22, skipping insertion in model container [2021-02-24 03:55:22,167 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 03:55:22" (1/1) ... [2021-02-24 03:55:22,176 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 03:55:22,201 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 03:55:22,449 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/double_req_bl_1071.c[1883,1896] [2021-02-24 03:55:22,453 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 03:55:22,462 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 03:55:22,489 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/double_req_bl_1071.c[1883,1896] [2021-02-24 03:55:22,490 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 03:55:22,507 INFO L208 MainTranslator]: Completed translation [2021-02-24 03:55:22,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:22 WrapperNode [2021-02-24 03:55:22,508 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 03:55:22,509 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 03:55:22,509 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 03:55:22,509 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 03:55:22,523 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:22" (1/1) ... [2021-02-24 03:55:22,523 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:22" (1/1) ... [2021-02-24 03:55:22,533 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:22" (1/1) ... [2021-02-24 03:55:22,533 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:22" (1/1) ... [2021-02-24 03:55:22,544 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:22" (1/1) ... [2021-02-24 03:55:22,550 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:22" (1/1) ... [2021-02-24 03:55:22,552 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:22" (1/1) ... [2021-02-24 03:55:22,555 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 03:55:22,557 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 03:55:22,557 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 03:55:22,557 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 03:55:22,558 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:22" (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 [2021-02-24 03:55:22,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 03:55:22,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 03:55:22,658 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 03:55:22,658 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2021-02-24 03:55:22,658 INFO L138 BoogieDeclarations]: Found implementation of procedure trunc_double [2021-02-24 03:55:22,658 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 03:55:22,658 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 03:55:22,659 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 03:55:22,659 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 03:55:22,660 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 03:55:22,660 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2021-02-24 03:55:22,660 INFO L130 BoogieDeclarations]: Found specification of procedure trunc_double [2021-02-24 03:55:22,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-24 03:55:22,661 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 03:55:22,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 03:55:22,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 03:55:22,662 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-24 03:55:22,663 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 03:55:22,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 03:55:22,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 03:55:22,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 03:55:23,278 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 03:55:23,278 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-02-24 03:55:23,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 03:55:23 BoogieIcfgContainer [2021-02-24 03:55:23,281 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 03:55:23,284 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 03:55:23,285 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 03:55:23,288 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 03:55:23,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 03:55:22" (1/3) ... [2021-02-24 03:55:23,290 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@533417a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 03:55:23, skipping insertion in model container [2021-02-24 03:55:23,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:22" (2/3) ... [2021-02-24 03:55:23,291 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@533417a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 03:55:23, skipping insertion in model container [2021-02-24 03:55:23,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 03:55:23" (3/3) ... [2021-02-24 03:55:23,293 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1071.c [2021-02-24 03:55:23,301 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 03:55:23,307 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 03:55:23,329 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 03:55:23,368 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 03:55:23,369 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 03:55:23,369 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-24 03:55:23,370 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 03:55:23,370 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 03:55:23,370 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 03:55:23,370 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 03:55:23,370 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 03:55:23,394 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states. [2021-02-24 03:55:23,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-24 03:55:23,408 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:55:23,409 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] [2021-02-24 03:55:23,410 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:55:23,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:55:23,418 INFO L82 PathProgramCache]: Analyzing trace with hash -290110632, now seen corresponding path program 1 times [2021-02-24 03:55:23,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:55:23,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2069177503] [2021-02-24 03:55:23,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:55:23,527 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:55:23,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:55:23,740 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:23,741 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:55:23,743 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:23,744 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:55:23,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:55:23,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:55:23,845 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:23,846 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:55:23,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-24 03:55:23,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:55:23,886 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:23,887 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:55:23,889 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:23,890 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:55:23,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-02-24 03:55:23,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:55:23,902 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:23,903 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:55:23,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:55:23,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2069177503] [2021-02-24 03:55:23,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:55:23,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-24 03:55:23,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388100208] [2021-02-24 03:55:23,928 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-24 03:55:23,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:55:23,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-24 03:55:23,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 03:55:23,943 INFO L87 Difference]: Start difference. First operand 86 states. Second operand 4 states. [2021-02-24 03:55:24,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:55:24,212 INFO L93 Difference]: Finished difference Result 152 states and 176 transitions. [2021-02-24 03:55:24,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-24 03:55:24,214 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2021-02-24 03:55:24,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:55:24,225 INFO L225 Difference]: With dead ends: 152 [2021-02-24 03:55:24,225 INFO L226 Difference]: Without dead ends: 79 [2021-02-24 03:55:24,229 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-24 03:55:24,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-02-24 03:55:24,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2021-02-24 03:55:24,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2021-02-24 03:55:24,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 82 transitions. [2021-02-24 03:55:24,281 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 82 transitions. Word has length 39 [2021-02-24 03:55:24,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:55:24,282 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 82 transitions. [2021-02-24 03:55:24,282 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-24 03:55:24,282 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 82 transitions. [2021-02-24 03:55:24,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-02-24 03:55:24,285 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:55:24,285 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] [2021-02-24 03:55:24,285 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 03:55:24,286 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:55:24,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:55:24,287 INFO L82 PathProgramCache]: Analyzing trace with hash 1020669440, now seen corresponding path program 1 times [2021-02-24 03:55:24,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:55:24,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1962242284] [2021-02-24 03:55:24,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:55:24,290 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:55:24,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 03:55:24,348 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 03:55:24,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 03:55:24,389 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 03:55:24,432 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-24 03:55:24,432 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-24 03:55:24,433 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 03:55:24,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 03:55:24 BoogieIcfgContainer [2021-02-24 03:55:24,458 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 03:55:24,460 INFO L168 Benchmark]: Toolchain (without parser) took 2319.84 ms. Allocated memory is still 151.0 MB. Free memory was 127.4 MB in the beginning and 119.7 MB in the end (delta: 7.7 MB). Peak memory consumption was 8.6 MB. Max. memory is 8.0 GB. [2021-02-24 03:55:24,462 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory was 123.9 MB in the beginning and 123.8 MB in the end (delta: 77.7 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 03:55:24,464 INFO L168 Benchmark]: CACSL2BoogieTranslator took 348.66 ms. Allocated memory is still 151.0 MB. Free memory was 126.3 MB in the beginning and 115.9 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-24 03:55:24,466 INFO L168 Benchmark]: Boogie Preprocessor took 46.56 ms. Allocated memory is still 151.0 MB. Free memory was 115.9 MB in the beginning and 114.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-24 03:55:24,467 INFO L168 Benchmark]: RCFGBuilder took 724.40 ms. Allocated memory is still 151.0 MB. Free memory was 114.1 MB in the beginning and 124.2 MB in the end (delta: -10.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2021-02-24 03:55:24,468 INFO L168 Benchmark]: TraceAbstraction took 1173.55 ms. Allocated memory is still 151.0 MB. Free memory was 123.7 MB in the beginning and 119.7 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.5 MB. Max. memory is 8.0 GB. [2021-02-24 03:55:24,479 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 151.0 MB. Free memory was 123.9 MB in the beginning and 123.8 MB in the end (delta: 77.7 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 348.66 ms. Allocated memory is still 151.0 MB. Free memory was 126.3 MB in the beginning and 115.9 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 46.56 ms. Allocated memory is still 151.0 MB. Free memory was 115.9 MB in the beginning and 114.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 724.40 ms. Allocated memory is still 151.0 MB. Free memory was 114.1 MB in the beginning and 124.2 MB in the end (delta: -10.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1173.55 ms. Allocated memory is still 151.0 MB. Free memory was 123.7 MB in the beginning and 119.7 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 76]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 17, overapproximation of someBinaryArithmeticDOUBLEoperation at line 51, overapproximation of bitwiseAnd at line 31. Possible FailurePath: [L70] double x = 0.0 / 0.0; [L72] CALL, EXPR trunc_double(x) [L20] int signbit; [L21] int msw; [L22] unsigned int lsw; [L23] int exponent_less_1023; [L25] ieee_double_shape_type ew_u; [L26] ew_u.value = (x) [L27] EXPR ew_u.parts.msw [L27] (msw) = ew_u.parts.msw [L28] EXPR ew_u.parts.lsw [L28] (lsw) = ew_u.parts.lsw [L30] signbit = msw & 0x80000000 [L31] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L32] COND FALSE !(exponent_less_1023 < 20) [L49] COND TRUE exponent_less_1023 > 51 [L50] COND TRUE exponent_less_1023 == 1024 [L51] return x + x; [L72] RET, EXPR trunc_double(x) [L72] double res = trunc_double(x); [L75] CALL, EXPR isnan_double(res) [L17] return x != x; [L75] RET, EXPR isnan_double(res) [L75] COND TRUE !isnan_double(res) [L76] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 89 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 86 SDtfs, 19 SDslu, 49 SDs, 0 SdLazy, 102 SolverSat, 6 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, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=86occurred 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...