/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 20:25:29,825 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 20:25:29,830 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 20:25:29,874 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-23 20:25:29,887 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 20:25:29,888 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 20:25:29,889 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 20:25:29,891 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 20:25:29,892 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 20:25:29,893 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 20:25:29,895 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 20:25:29,897 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 20:25:29,899 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 20:25:29,901 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 20:25:29,902 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 20:25:29,903 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 20:25:29,906 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 20:25:29,917 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 20:25:29,918 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 20:25:29,919 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 20:25:29,920 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 20:25:29,933 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 20:25:29,933 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 20:25:29,945 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 20:25:29,945 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 20:25:29,945 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 20:25:29,948 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 20:25:29,948 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 20:25:29,948 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 20:25:29,948 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 20:25:29,949 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 20:25:29,949 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 20:25:29,951 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 20:25:29,952 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 20:25:29,952 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 20:25:29,952 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 20:25:29,952 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 20:25:29,952 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 20:25:29,953 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 20:25:29,953 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:25:29,953 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 20:25:29,953 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 20:25:29,953 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 20:25:29,954 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 20:25:30,319 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 20:25:30,354 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 20:25:30,357 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 20:25:30,358 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 20:25:30,359 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 20:25:30,361 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2020-10-23 20:25:30,448 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f36e423a/722ce747a945480786124f149cfe5977/FLAGa7fd82f9e [2020-10-23 20:25:31,160 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 20:25:31,160 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2020-10-23 20:25:31,174 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f36e423a/722ce747a945480786124f149cfe5977/FLAGa7fd82f9e [2020-10-23 20:25:31,488 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f36e423a/722ce747a945480786124f149cfe5977 [2020-10-23 20:25:31,493 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 20:25:31,501 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 20:25:31,507 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 20:25:31,507 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 20:25:31,512 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 20:25:31,513 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:25:31" (1/1) ... [2020-10-23 20:25:31,517 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@207c283b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:31, skipping insertion in model container [2020-10-23 20:25:31,518 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:25:31" (1/1) ... [2020-10-23 20:25:31,528 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 20:25:31,563 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 20:25:31,842 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:25:31,859 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 20:25:31,904 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:25:31,924 INFO L208 MainTranslator]: Completed translation [2020-10-23 20:25:31,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:31 WrapperNode [2020-10-23 20:25:31,924 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 20:25:31,926 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 20:25:31,926 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 20:25:31,926 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 20:25:31,939 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:31" (1/1) ... [2020-10-23 20:25:31,940 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:31" (1/1) ... [2020-10-23 20:25:31,951 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:31" (1/1) ... [2020-10-23 20:25:31,951 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:31" (1/1) ... [2020-10-23 20:25:31,973 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:31" (1/1) ... [2020-10-23 20:25:31,990 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:31" (1/1) ... [2020-10-23 20:25:31,995 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:31" (1/1) ... [2020-10-23 20:25:32,002 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 20:25:32,003 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 20:25:32,003 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 20:25:32,003 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 20:25:32,008 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:31" (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 [2020-10-23 20:25:32,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 20:25:32,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 20:25:32,102 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 20:25:32,102 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-10-23 20:25:32,102 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_float [2020-10-23 20:25:32,102 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 20:25:32,102 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 20:25:32,103 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 20:25:32,103 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 20:25:32,103 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 20:25:32,103 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-23 20:25:32,104 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-10-23 20:25:32,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-23 20:25:32,105 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 20:25:32,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 20:25:32,105 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-23 20:25:32,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 20:25:32,106 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_float [2020-10-23 20:25:32,106 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 20:25:32,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 20:25:32,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 20:25:32,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-23 20:25:32,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 20:25:32,988 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 20:25:32,989 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-10-23 20:25:32,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:25:32 BoogieIcfgContainer [2020-10-23 20:25:32,992 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 20:25:32,995 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 20:25:32,995 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 20:25:32,999 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 20:25:32,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:25:31" (1/3) ... [2020-10-23 20:25:33,000 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12ff2d26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:25:33, skipping insertion in model container [2020-10-23 20:25:33,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:31" (2/3) ... [2020-10-23 20:25:33,001 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12ff2d26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:25:33, skipping insertion in model container [2020-10-23 20:25:33,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:25:32" (3/3) ... [2020-10-23 20:25:33,003 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1131b.c [2020-10-23 20:25:33,018 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 20:25:33,023 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 20:25:33,037 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 20:25:33,079 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 20:25:33,079 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 20:25:33,079 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 20:25:33,079 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 20:25:33,079 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 20:25:33,080 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 20:25:33,080 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 20:25:33,080 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 20:25:33,108 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states. [2020-10-23 20:25:33,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-23 20:25:33,123 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:25:33,124 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] [2020-10-23 20:25:33,124 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:25:33,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:25:33,135 INFO L82 PathProgramCache]: Analyzing trace with hash -682848670, now seen corresponding path program 1 times [2020-10-23 20:25:33,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:25:33,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [374438825] [2020-10-23 20:25:33,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:25:33,218 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:25:33,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:33,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:25:33,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:33,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-23 20:25:33,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:33,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-23 20:25:33,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:33,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:25:33,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [374438825] [2020-10-23 20:25:33,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:25:33,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 20:25:33,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060734464] [2020-10-23 20:25:33,491 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 20:25:33,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:25:33,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 20:25:33,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 20:25:33,510 INFO L87 Difference]: Start difference. First operand 170 states. Second operand 4 states. [2020-10-23 20:25:34,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:25:34,044 INFO L93 Difference]: Finished difference Result 315 states and 379 transitions. [2020-10-23 20:25:34,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-23 20:25:34,046 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2020-10-23 20:25:34,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:25:34,059 INFO L225 Difference]: With dead ends: 315 [2020-10-23 20:25:34,059 INFO L226 Difference]: Without dead ends: 161 [2020-10-23 20:25:34,065 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 [2020-10-23 20:25:34,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-10-23 20:25:34,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2020-10-23 20:25:34,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-23 20:25:34,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 176 transitions. [2020-10-23 20:25:34,130 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 176 transitions. Word has length 55 [2020-10-23 20:25:34,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:25:34,131 INFO L481 AbstractCegarLoop]: Abstraction has 161 states and 176 transitions. [2020-10-23 20:25:34,131 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 20:25:34,131 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 176 transitions. [2020-10-23 20:25:34,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-23 20:25:34,136 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:25:34,136 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:25:34,137 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 20:25:34,137 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:25:34,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:25:34,138 INFO L82 PathProgramCache]: Analyzing trace with hash 323090980, now seen corresponding path program 1 times [2020-10-23 20:25:34,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:25:34,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [460588777] [2020-10-23 20:25:34,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:25:34,142 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:25:34,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:25:34,299 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:25:34,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:25:34,381 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:25:34,455 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 20:25:34,456 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 20:25:34,459 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 20:25:34,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:25:34 BoogieIcfgContainer [2020-10-23 20:25:34,484 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 20:25:34,489 INFO L168 Benchmark]: Toolchain (without parser) took 2990.39 ms. Allocated memory is still 169.9 MB. Free memory was 145.8 MB in the beginning and 147.5 MB in the end (delta: -1.7 MB). Peak memory consumption was 78.5 MB. Max. memory is 8.0 GB. [2020-10-23 20:25:34,490 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 125.8 MB. Free memory is still 103.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 20:25:34,493 INFO L168 Benchmark]: CACSL2BoogieTranslator took 417.79 ms. Allocated memory is still 169.9 MB. Free memory was 145.1 MB in the beginning and 133.6 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-10-23 20:25:34,494 INFO L168 Benchmark]: Boogie Preprocessor took 76.52 ms. Allocated memory is still 169.9 MB. Free memory was 133.6 MB in the beginning and 131.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-23 20:25:34,496 INFO L168 Benchmark]: RCFGBuilder took 988.68 ms. Allocated memory is still 169.9 MB. Free memory was 131.3 MB in the beginning and 128.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 15.6 MB. Max. memory is 8.0 GB. [2020-10-23 20:25:34,497 INFO L168 Benchmark]: TraceAbstraction took 1489.12 ms. Allocated memory is still 169.9 MB. Free memory was 127.6 MB in the beginning and 147.5 MB in the end (delta: -19.9 MB). Peak memory consumption was 58.7 MB. Max. memory is 8.0 GB. [2020-10-23 20:25:34,508 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 125.8 MB. Free memory is still 103.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 417.79 ms. Allocated memory is still 169.9 MB. Free memory was 145.1 MB in the beginning and 133.6 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 76.52 ms. Allocated memory is still 169.9 MB. Free memory was 133.6 MB in the beginning and 131.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 988.68 ms. Allocated memory is still 169.9 MB. Free memory was 131.3 MB in the beginning and 128.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 15.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1489.12 ms. Allocated memory is still 169.9 MB. Free memory was 127.6 MB in the beginning and 147.5 MB in the end (delta: -19.9 MB). Peak memory consumption was 58.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 136, overapproximation of someUnaryDOUBLEoperation at line 16, overapproximation of bitwiseAnd at line 34, overapproximation of someBinaryArithmeticFLOAToperation at line 37, overapproximation of bitwiseXor at line 33. Possible FailurePath: [L14-L17] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L128] float x = __VERIFIER_nondet_float(); [L129] float y = -1.0f / 0.0f; [L131] CALL isfinite_float(x) [L111] __int32_t ix; [L113] ieee_float_shape_type gf_u; [L114] gf_u.value = (x) [L115] EXPR gf_u.word [L115] (ix) = gf_u.word [L117] ix &= 0x7fffffff [L118] return (((ix) < 0x7f800000L)); [L131] RET isfinite_float(x) [L131] COND TRUE isfinite_float(x) [L133] CALL, EXPR fmod_float(x, y) [L20] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L23] ieee_float_shape_type gf_u; [L24] gf_u.value = (x) [L25] EXPR gf_u.word [L25] (hx) = gf_u.word [L28] ieee_float_shape_type gf_u; [L29] gf_u.value = (y) [L30] EXPR gf_u.word [L30] (hy) = gf_u.word [L32] sx = hx & 0x80000000 [L33] hx ^= sx [L34] hy &= 0x7fffffff [L36] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) [L37] return (x * y) / (x * y); [L133] RET, EXPR fmod_float(x, y) [L133] float res = fmod_float(x, y); [L136] COND TRUE res != x [L137] CALL reach_error() [L3] __assert_fail("0", "float_req_bl_1131b.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 170 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: 180 SDtfs, 33 SDslu, 127 SDs, 0 SdLazy, 199 SolverSat, 8 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=170occurred 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...