/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/float_req_bl_1210.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-22 01:32:10,007 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 01:32:10,009 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 01:32:10,044 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-22 01:32:10,057 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-22 01:32:10,058 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-22 01:32:10,059 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-22 01:32:10,060 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-22 01:32:10,061 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-22 01:32:10,062 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-22 01:32:10,064 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-22 01:32:10,066 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-22 01:32:10,068 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-22 01:32:10,070 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-22 01:32:10,071 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-22 01:32:10,072 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-22 01:32:10,075 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-22 01:32:10,106 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-22 01:32:10,107 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-22 01:32:10,110 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-22 01:32:10,111 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 01:32:10,134 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 01:32:10,134 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 01:32:10,137 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 01:32:10,139 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 01:32:10,139 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 01:32:10,139 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 01:32:10,140 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 01:32:10,140 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 01:32:10,140 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 01:32:10,140 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 01:32:10,140 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 01:32:10,141 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 01:32:10,141 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 01:32:10,142 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 01:32:10,142 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 01:32:10,143 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 01:32:10,143 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 01:32:10,143 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 01:32:10,143 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 01:32:10,143 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 01:32:10,144 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 01:32:10,144 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 01:32:10,144 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 01:32:10,144 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 01:32:10,517 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 01:32:10,548 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 01:32:10,551 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 01:32:10,552 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 01:32:10,553 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 01:32:10,554 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1210.c [2021-02-22 01:32:10,636 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3496ef1b9/b5987dc32ec44217bfa6061e23556c53/FLAG56467d501 [2021-02-22 01:32:11,218 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 01:32:11,221 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1210.c [2021-02-22 01:32:11,232 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3496ef1b9/b5987dc32ec44217bfa6061e23556c53/FLAG56467d501 [2021-02-22 01:32:11,598 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3496ef1b9/b5987dc32ec44217bfa6061e23556c53 [2021-02-22 01:32:11,601 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 01:32:11,621 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 01:32:11,627 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 01:32:11,627 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 01:32:11,631 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 01:32:11,632 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:32:11" (1/1) ... [2021-02-22 01:32:11,633 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44d28c65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:32:11, skipping insertion in model container [2021-02-22 01:32:11,634 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:32:11" (1/1) ... [2021-02-22 01:32:11,643 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 01:32:11,669 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 01:32:11,900 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_1210.c[2159,2172] [2021-02-22 01:32:11,903 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:32:11,913 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 01:32:11,950 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_1210.c[2159,2172] [2021-02-22 01:32:11,951 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:32:11,978 INFO L208 MainTranslator]: Completed translation [2021-02-22 01:32:11,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:32:11 WrapperNode [2021-02-22 01:32:11,980 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 01:32:11,981 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 01:32:11,981 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 01:32:11,982 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 01:32:11,997 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:32:11" (1/1) ... [2021-02-22 01:32:11,998 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:32:11" (1/1) ... [2021-02-22 01:32:12,023 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:32:11" (1/1) ... [2021-02-22 01:32:12,024 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:32:11" (1/1) ... [2021-02-22 01:32:12,055 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:32:11" (1/1) ... [2021-02-22 01:32:12,068 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:32:11" (1/1) ... [2021-02-22 01:32:12,076 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:32:11" (1/1) ... [2021-02-22 01:32:12,086 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 01:32:12,088 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 01:32:12,090 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 01:32:12,090 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 01:32:12,091 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:32:11" (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 01:32:12,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 01:32:12,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 01:32:12,230 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 01:32:12,230 INFO L138 BoogieDeclarations]: Found implementation of procedure modf_float [2021-02-22 01:32:12,230 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2021-02-22 01:32:12,231 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 01:32:12,231 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 01:32:12,231 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 01:32:12,232 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 01:32:12,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 01:32:12,233 INFO L130 BoogieDeclarations]: Found specification of procedure modf_float [2021-02-22 01:32:12,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-22 01:32:12,233 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 01:32:12,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 01:32:12,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 01:32:12,234 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-22 01:32:12,235 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2021-02-22 01:32:12,235 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 01:32:12,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 01:32:12,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 01:32:12,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 01:32:12,904 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 01:32:12,904 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-02-22 01:32:12,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:32:12 BoogieIcfgContainer [2021-02-22 01:32:12,906 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 01:32:12,908 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 01:32:12,909 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 01:32:12,912 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 01:32:12,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 01:32:11" (1/3) ... [2021-02-22 01:32:12,913 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69318694 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:32:12, skipping insertion in model container [2021-02-22 01:32:12,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:32:11" (2/3) ... [2021-02-22 01:32:12,914 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69318694 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:32:12, skipping insertion in model container [2021-02-22 01:32:12,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:32:12" (3/3) ... [2021-02-22 01:32:12,915 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1210.c [2021-02-22 01:32:12,922 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 01:32:12,927 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-22 01:32:12,945 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-22 01:32:12,969 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 01:32:12,970 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 01:32:12,970 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 01:32:12,970 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 01:32:12,970 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 01:32:12,970 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 01:32:12,971 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 01:32:12,971 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 01:32:12,989 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states. [2021-02-22 01:32:13,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-02-22 01:32:13,001 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:32:13,002 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 01:32:13,002 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:32:13,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:32:13,009 INFO L82 PathProgramCache]: Analyzing trace with hash 1176338435, now seen corresponding path program 1 times [2021-02-22 01:32:13,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:32:13,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1712754343] [2021-02-22 01:32:13,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:32:13,093 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:32:13,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:13,216 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:13,217 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:13,218 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:13,219 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:13,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:32:13,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:13,335 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:13,338 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:13,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-22 01:32:13,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:13,372 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:13,373 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:13,374 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:13,375 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:13,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-22 01:32:13,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:13,385 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:13,386 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:13,396 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 01:32:13,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1712754343] [2021-02-22 01:32:13,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:32:13,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-22 01:32:13,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469122913] [2021-02-22 01:32:13,405 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-22 01:32:13,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:32:13,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-22 01:32:13,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-22 01:32:13,421 INFO L87 Difference]: Start difference. First operand 129 states. Second operand 4 states. [2021-02-22 01:32:13,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:32:13,862 INFO L93 Difference]: Finished difference Result 234 states and 272 transitions. [2021-02-22 01:32:13,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-22 01:32:13,864 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2021-02-22 01:32:13,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:32:13,874 INFO L225 Difference]: With dead ends: 234 [2021-02-22 01:32:13,875 INFO L226 Difference]: Without dead ends: 115 [2021-02-22 01:32:13,879 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-22 01:32:13,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-02-22 01:32:13,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2021-02-22 01:32:13,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2021-02-22 01:32:13,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 119 transitions. [2021-02-22 01:32:13,937 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 119 transitions. Word has length 46 [2021-02-22 01:32:13,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:32:13,937 INFO L480 AbstractCegarLoop]: Abstraction has 115 states and 119 transitions. [2021-02-22 01:32:13,937 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-22 01:32:13,938 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 119 transitions. [2021-02-22 01:32:13,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-02-22 01:32:13,941 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:32:13,941 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] [2021-02-22 01:32:13,942 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 01:32:13,942 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:32:13,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:32:13,943 INFO L82 PathProgramCache]: Analyzing trace with hash -551920588, now seen corresponding path program 1 times [2021-02-22 01:32:13,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:32:13,943 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2118354316] [2021-02-22 01:32:13,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:32:13,947 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:32:13,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:14,051 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:14,052 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:14,053 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:14,056 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-02-22 01:32:14,061 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:14,062 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:14,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:32:14,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:14,129 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:14,129 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:14,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-22 01:32:14,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:14,159 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:14,159 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:14,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-22 01:32:14,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:14,165 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:14,165 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:14,173 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 01:32:14,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2118354316] [2021-02-22 01:32:14,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:32:14,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-22 01:32:14,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694283281] [2021-02-22 01:32:14,175 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-22 01:32:14,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:32:14,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-22 01:32:14,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-22 01:32:14,176 INFO L87 Difference]: Start difference. First operand 115 states and 119 transitions. Second operand 5 states. [2021-02-22 01:32:14,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:32:14,510 INFO L93 Difference]: Finished difference Result 122 states and 125 transitions. [2021-02-22 01:32:14,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-22 01:32:14,511 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2021-02-22 01:32:14,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:32:14,513 INFO L225 Difference]: With dead ends: 122 [2021-02-22 01:32:14,514 INFO L226 Difference]: Without dead ends: 115 [2021-02-22 01:32:14,515 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-22 01:32:14,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-02-22 01:32:14,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2021-02-22 01:32:14,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2021-02-22 01:32:14,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 118 transitions. [2021-02-22 01:32:14,537 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 118 transitions. Word has length 60 [2021-02-22 01:32:14,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:32:14,538 INFO L480 AbstractCegarLoop]: Abstraction has 115 states and 118 transitions. [2021-02-22 01:32:14,539 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-22 01:32:14,539 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 118 transitions. [2021-02-22 01:32:14,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-02-22 01:32:14,542 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:32:14,542 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 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 01:32:14,542 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-22 01:32:14,542 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:32:14,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:32:14,543 INFO L82 PathProgramCache]: Analyzing trace with hash 885747555, now seen corresponding path program 1 times [2021-02-22 01:32:14,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:32:14,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [849997039] [2021-02-22 01:32:14,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:32:14,547 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:32:14,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 01:32:14,589 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 01:32:14,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 01:32:14,624 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 01:32:14,676 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-22 01:32:14,676 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-22 01:32:14,678 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-22 01:32:14,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.02 01:32:14 BoogieIcfgContainer [2021-02-22 01:32:14,707 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-22 01:32:14,709 INFO L168 Benchmark]: Toolchain (without parser) took 3101.84 ms. Allocated memory was 154.1 MB in the beginning and 185.6 MB in the end (delta: 31.5 MB). Free memory was 131.2 MB in the beginning and 148.3 MB in the end (delta: -17.1 MB). Peak memory consumption was 15.3 MB. Max. memory is 8.0 GB. [2021-02-22 01:32:14,710 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 154.1 MB. Free memory is still 129.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 01:32:14,713 INFO L168 Benchmark]: CACSL2BoogieTranslator took 353.30 ms. Allocated memory is still 154.1 MB. Free memory was 130.0 MB in the beginning and 119.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-02-22 01:32:14,716 INFO L168 Benchmark]: Boogie Preprocessor took 105.51 ms. Allocated memory is still 154.1 MB. Free memory was 119.3 MB in the beginning and 117.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-22 01:32:14,717 INFO L168 Benchmark]: RCFGBuilder took 818.81 ms. Allocated memory is still 154.1 MB. Free memory was 117.2 MB in the beginning and 120.5 MB in the end (delta: -3.2 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-02-22 01:32:14,723 INFO L168 Benchmark]: TraceAbstraction took 1798.30 ms. Allocated memory was 154.1 MB in the beginning and 185.6 MB in the end (delta: 31.5 MB). Free memory was 120.0 MB in the beginning and 148.3 MB in the end (delta: -28.4 MB). Peak memory consumption was 4.1 MB. Max. memory is 8.0 GB. [2021-02-22 01:32:14,732 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 154.1 MB. Free memory is still 129.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 353.30 ms. Allocated memory is still 154.1 MB. Free memory was 130.0 MB in the beginning and 119.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 105.51 ms. Allocated memory is still 154.1 MB. Free memory was 119.3 MB in the beginning and 117.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 818.81 ms. Allocated memory is still 154.1 MB. Free memory was 117.2 MB in the beginning and 120.5 MB in the end (delta: -3.2 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1798.30 ms. Allocated memory was 154.1 MB in the beginning and 185.6 MB in the end (delta: 31.5 MB). Free memory was 120.0 MB in the beginning and 148.3 MB in the end (delta: -28.4 MB). Peak memory consumption was 4.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 88]: 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 75, overapproximation of someBinaryArithmeticFLOAToperation at line 82, overapproximation of bitwiseAnd at line 28. Possible FailurePath: [L13] static const float one_modf = 1.0; [L82] float x = 0.0f / 0.0f; [L83] float iptr; [L84] CALL, EXPR modf_float(x, &iptr) [L16] __int32_t i0, j0; [L17] __uint32_t i; [L19] ieee_float_shape_type gf_u; [L20] gf_u.value = (x) [L21] EXPR gf_u.word [L21] (i0) = gf_u.word [L23] j0 = ((i0 >> 23) & 0xff) - 0x7f [L24] COND TRUE j0 < 23 [L25] COND TRUE j0 < 0 [L27] ieee_float_shape_type sf_u; [L28] sf_u.word = (i0 & 0x80000000) [L29] EXPR sf_u.value [L29] (*iptr) = sf_u.value [L31] return x; [L84] RET, EXPR modf_float(x, &iptr) [L84] float res = modf_float(x, &iptr); [L87] EXPR \read(iptr) [L87] CALL, EXPR isnan_float(iptr) [L75] return x != x; [L87] RET, EXPR isnan_float(iptr) [L87] isnan_float(iptr) && !isnan_float(res) [L87] CALL, EXPR isnan_float(res) [L75] return x != x; [L87] RET, EXPR isnan_float(res) [L87] isnan_float(iptr) && !isnan_float(res) [L87] COND TRUE isnan_float(iptr) && !isnan_float(res) [L88] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 132 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.7s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 243 SDtfs, 38 SDslu, 236 SDs, 0 SdLazy, 328 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=129occurred 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, 2 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...