/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_1092d.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-22 01:31:23,212 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 01:31:23,217 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 01:31:23,265 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-22 01:31:23,304 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-22 01:31:23,306 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-22 01:31:23,308 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-22 01:31:23,310 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-22 01:31:23,315 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-22 01:31:23,317 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-22 01:31:23,323 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-22 01:31:23,328 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-22 01:31:23,332 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-22 01:31:23,334 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-22 01:31:23,335 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-22 01:31:23,337 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-22 01:31:23,347 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-22 01:31:23,361 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-22 01:31:23,362 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-22 01:31:23,362 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-22 01:31:23,366 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-22 01:31:23,390 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 01:31:23,390 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 01:31:23,395 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 01:31:23,396 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 01:31:23,396 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 01:31:23,396 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 01:31:23,397 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 01:31:23,397 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 01:31:23,397 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 01:31:23,397 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 01:31:23,399 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 01:31:23,399 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 01:31:23,399 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 01:31:23,400 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 01:31:23,400 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 01:31:23,401 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 01:31:23,401 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 01:31:23,401 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 01:31:23,401 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 01:31:23,402 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 01:31:23,402 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 01:31:23,402 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 01:31:23,402 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 01:31:23,403 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 01:31:23,838 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 01:31:23,863 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 01:31:23,866 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 01:31:23,868 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 01:31:23,868 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 01:31:23,869 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1092d.c [2021-02-22 01:31:23,961 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17343b30b/496c379e46a6416bbcadf6215733adc6/FLAG7f92c4e67 [2021-02-22 01:31:24,581 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 01:31:24,582 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1092d.c [2021-02-22 01:31:24,591 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17343b30b/496c379e46a6416bbcadf6215733adc6/FLAG7f92c4e67 [2021-02-22 01:31:24,882 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17343b30b/496c379e46a6416bbcadf6215733adc6 [2021-02-22 01:31:24,886 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 01:31:24,900 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 01:31:24,907 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 01:31:24,907 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 01:31:24,911 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 01:31:24,912 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:31:24" (1/1) ... [2021-02-22 01:31:24,914 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66ce410d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:24, skipping insertion in model container [2021-02-22 01:31:24,914 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:31:24" (1/1) ... [2021-02-22 01:31:24,924 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 01:31:24,954 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 01:31:25,160 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_1092d.c[2417,2430] [2021-02-22 01:31:25,164 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:31:25,174 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 01:31:25,213 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_1092d.c[2417,2430] [2021-02-22 01:31:25,214 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:31:25,232 INFO L208 MainTranslator]: Completed translation [2021-02-22 01:31:25,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:25 WrapperNode [2021-02-22 01:31:25,233 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 01:31:25,234 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 01:31:25,234 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 01:31:25,234 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 01:31:25,249 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:25" (1/1) ... [2021-02-22 01:31:25,249 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:25" (1/1) ... [2021-02-22 01:31:25,260 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:25" (1/1) ... [2021-02-22 01:31:25,260 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:25" (1/1) ... [2021-02-22 01:31:25,275 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:25" (1/1) ... [2021-02-22 01:31:25,288 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:25" (1/1) ... [2021-02-22 01:31:25,290 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:25" (1/1) ... [2021-02-22 01:31:25,293 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 01:31:25,294 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 01:31:25,295 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 01:31:25,295 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 01:31:25,296 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:25" (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 [2021-02-22 01:31:25,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 01:31:25,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 01:31:25,409 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 01:31:25,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_double [2021-02-22 01:31:25,409 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_double [2021-02-22 01:31:25,409 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 01:31:25,410 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 01:31:25,410 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 01:31:25,411 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 01:31:25,411 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 01:31:25,412 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_double [2021-02-22 01:31:25,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-22 01:31:25,412 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 01:31:25,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 01:31:25,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 01:31:25,413 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-22 01:31:25,413 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_double [2021-02-22 01:31:25,414 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 01:31:25,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 01:31:25,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 01:31:25,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 01:31:26,117 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 01:31:26,117 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-02-22 01:31:26,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:31:26 BoogieIcfgContainer [2021-02-22 01:31:26,124 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 01:31:26,125 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 01:31:26,126 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 01:31:26,132 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 01:31:26,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 01:31:24" (1/3) ... [2021-02-22 01:31:26,134 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e901ad1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:31:26, skipping insertion in model container [2021-02-22 01:31:26,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:25" (2/3) ... [2021-02-22 01:31:26,134 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e901ad1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:31:26, skipping insertion in model container [2021-02-22 01:31:26,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:31:26" (3/3) ... [2021-02-22 01:31:26,136 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1092d.c [2021-02-22 01:31:26,143 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 01:31:26,148 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-22 01:31:26,167 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-22 01:31:26,191 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 01:31:26,191 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 01:31:26,191 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 01:31:26,192 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 01:31:26,192 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 01:31:26,192 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 01:31:26,192 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 01:31:26,192 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 01:31:26,211 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states. [2021-02-22 01:31:26,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-02-22 01:31:26,223 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:31:26,224 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] [2021-02-22 01:31:26,224 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:31:26,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:31:26,230 INFO L82 PathProgramCache]: Analyzing trace with hash -1654117377, now seen corresponding path program 1 times [2021-02-22 01:31:26,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:31:26,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [504274036] [2021-02-22 01:31:26,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:31:26,321 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:31:26,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:31:26,445 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:26,447 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:26,448 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:26,448 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:26,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:31:26,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:31:26,514 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:26,515 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:26,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-22 01:31:26,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:31:26,547 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:26,548 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:26,548 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:26,549 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:26,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-02-22 01:31:26,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:31:26,564 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:26,565 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:26,568 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:26,569 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:26,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:31:26,606 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [504274036] [2021-02-22 01:31:26,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:31:26,609 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-22 01:31:26,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836850734] [2021-02-22 01:31:26,619 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-22 01:31:26,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:31:26,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-22 01:31:26,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-22 01:31:26,643 INFO L87 Difference]: Start difference. First operand 113 states. Second operand 4 states. [2021-02-22 01:31:27,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:31:27,156 INFO L93 Difference]: Finished difference Result 204 states and 247 transitions. [2021-02-22 01:31:27,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-22 01:31:27,158 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2021-02-22 01:31:27,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:31:27,169 INFO L225 Difference]: With dead ends: 204 [2021-02-22 01:31:27,170 INFO L226 Difference]: Without dead ends: 106 [2021-02-22 01:31:27,174 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 [2021-02-22 01:31:27,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-02-22 01:31:27,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2021-02-22 01:31:27,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2021-02-22 01:31:27,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 120 transitions. [2021-02-22 01:31:27,236 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 120 transitions. Word has length 46 [2021-02-22 01:31:27,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:31:27,236 INFO L480 AbstractCegarLoop]: Abstraction has 106 states and 120 transitions. [2021-02-22 01:31:27,237 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-22 01:31:27,237 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 120 transitions. [2021-02-22 01:31:27,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-02-22 01:31:27,240 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:31:27,240 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] [2021-02-22 01:31:27,241 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 01:31:27,241 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:31:27,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:31:27,242 INFO L82 PathProgramCache]: Analyzing trace with hash 698900399, now seen corresponding path program 1 times [2021-02-22 01:31:27,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:31:27,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [950917077] [2021-02-22 01:31:27,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:31:27,247 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:31:27,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 01:31:27,365 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 01:31:27,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 01:31:27,473 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 01:31:27,540 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-22 01:31:27,540 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-22 01:31:27,543 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-22 01:31:27,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.02 01:31:27 BoogieIcfgContainer [2021-02-22 01:31:27,571 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-22 01:31:27,577 INFO L168 Benchmark]: Toolchain (without parser) took 2686.05 ms. Allocated memory was 173.0 MB in the beginning and 219.2 MB in the end (delta: 46.1 MB). Free memory was 149.3 MB in the beginning and 159.7 MB in the end (delta: -10.4 MB). Peak memory consumption was 36.5 MB. Max. memory is 8.0 GB. [2021-02-22 01:31:27,578 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 173.0 MB. Free memory is still 146.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 01:31:27,580 INFO L168 Benchmark]: CACSL2BoogieTranslator took 326.46 ms. Allocated memory is still 173.0 MB. Free memory was 148.1 MB in the beginning and 137.1 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-02-22 01:31:27,582 INFO L168 Benchmark]: Boogie Preprocessor took 59.60 ms. Allocated memory is still 173.0 MB. Free memory was 137.1 MB in the beginning and 135.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-22 01:31:27,583 INFO L168 Benchmark]: RCFGBuilder took 829.28 ms. Allocated memory is still 173.0 MB. Free memory was 135.2 MB in the beginning and 141.9 MB in the end (delta: -6.7 MB). Peak memory consumption was 17.0 MB. Max. memory is 8.0 GB. [2021-02-22 01:31:27,584 INFO L168 Benchmark]: TraceAbstraction took 1446.93 ms. Allocated memory was 173.0 MB in the beginning and 219.2 MB in the end (delta: 46.1 MB). Free memory was 141.4 MB in the beginning and 159.7 MB in the end (delta: -18.3 MB). Peak memory consumption was 28.9 MB. Max. memory is 8.0 GB. [2021-02-22 01:31:27,596 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 173.0 MB. Free memory is still 146.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 326.46 ms. Allocated memory is still 173.0 MB. Free memory was 148.1 MB in the beginning and 137.1 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 59.60 ms. Allocated memory is still 173.0 MB. Free memory was 137.1 MB in the beginning and 135.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 829.28 ms. Allocated memory is still 173.0 MB. Free memory was 135.2 MB in the beginning and 141.9 MB in the end (delta: -6.7 MB). Peak memory consumption was 17.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1446.93 ms. Allocated memory was 173.0 MB in the beginning and 219.2 MB in the end (delta: 46.1 MB). Free memory was 141.4 MB in the beginning and 159.7 MB in the end (delta: -18.3 MB). Peak memory consumption was 28.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 110]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 94, overapproximation of someBinaryArithmeticDOUBLEoperation at line 52, overapproximation of bitwiseAnd at line 91. Possible FailurePath: [L16] static const double huge_ceil = 1.0e300; [L105] double x = -1.0 / 0.0; [L106] CALL, EXPR ceil_double(x) [L19] __int32_t i0, i1, j0; [L20] __uint32_t i, j; [L22] ieee_double_shape_type ew_u; [L23] ew_u.value = (x) [L24] EXPR ew_u.parts.msw [L24] (i0) = ew_u.parts.msw [L25] EXPR ew_u.parts.lsw [L25] (i1) = ew_u.parts.lsw [L27] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff [L28] COND FALSE !(j0 < 20) [L50] COND TRUE j0 > 51 [L51] COND TRUE j0 == 0x400 [L52] return x + x; [L106] RET, EXPR ceil_double(x) [L106] double res = ceil_double(x); [L109] CALL, EXPR isinf_double(res) [L84] __int32_t hx, lx; [L86] ieee_double_shape_type ew_u; [L87] ew_u.value = (x) [L88] EXPR ew_u.parts.msw [L88] (hx) = ew_u.parts.msw [L89] EXPR ew_u.parts.lsw [L89] (lx) = ew_u.parts.lsw [L91] hx &= 0x7fffffff [L92] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L93] hx = 0x7ff00000 - hx [L94] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L109] RET, EXPR isinf_double(res) [L109] COND TRUE !isinf_double(res) [L110] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 116 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 123 SDtfs, 21 SDslu, 92 SDs, 0 SdLazy, 134 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=113occurred 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...