/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_1032d.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 00:24:47,910 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 00:24:47,913 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 00:24:47,962 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-11-07 00:24:47,993 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 00:24:47,994 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 00:24:47,995 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 00:24:47,997 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 00:24:47,998 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 00:24:48,012 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 00:24:48,020 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 00:24:48,023 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 00:24:48,028 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 00:24:48,029 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 00:24:48,031 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 00:24:48,032 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 00:24:48,035 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 00:24:48,044 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 00:24:48,045 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 00:24:48,046 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 00:24:48,047 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 00:24:48,059 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 00:24:48,060 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 00:24:48,061 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 00:24:48,061 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 00:24:48,062 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 00:24:48,062 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 00:24:48,062 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 00:24:48,062 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 00:24:48,063 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 00:24:48,063 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 00:24:48,063 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 00:24:48,063 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 00:24:48,063 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 00:24:48,064 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 00:24:48,064 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 00:24:48,064 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 00:24:48,064 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 00:24:48,065 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 00:24:48,065 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 00:24:48,065 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 00:24:48,065 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 00:24:48,066 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 00:24:48,066 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-07 00:24:48,449 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 00:24:48,499 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 00:24:48,502 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 00:24:48,504 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 00:24:48,505 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 00:24:48,506 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1032d.c [2020-11-07 00:24:48,606 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e6eb4c5b/3e86b1fb9ba94096b76d7ac9a7150986/FLAG2d16be55d [2020-11-07 00:24:49,344 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 00:24:49,344 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1032d.c [2020-11-07 00:24:49,354 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e6eb4c5b/3e86b1fb9ba94096b76d7ac9a7150986/FLAG2d16be55d [2020-11-07 00:24:49,668 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e6eb4c5b/3e86b1fb9ba94096b76d7ac9a7150986 [2020-11-07 00:24:49,671 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 00:24:49,678 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 00:24:49,680 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 00:24:49,680 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 00:24:49,684 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 00:24:49,685 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:24:49" (1/1) ... [2020-11-07 00:24:49,689 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63086b13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:24:49, skipping insertion in model container [2020-11-07 00:24:49,689 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:24:49" (1/1) ... [2020-11-07 00:24:49,698 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 00:24:49,715 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 00:24:49,905 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 00:24:49,916 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 00:24:49,969 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 00:24:49,990 INFO L208 MainTranslator]: Completed translation [2020-11-07 00:24:49,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:24:49 WrapperNode [2020-11-07 00:24:49,991 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 00:24:49,992 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 00:24:49,992 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 00:24:49,993 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 00:24:50,007 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:24:49" (1/1) ... [2020-11-07 00:24:50,007 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:24:49" (1/1) ... [2020-11-07 00:24:50,031 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:24:49" (1/1) ... [2020-11-07 00:24:50,032 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:24:49" (1/1) ... [2020-11-07 00:24:50,062 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:24:49" (1/1) ... [2020-11-07 00:24:50,070 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:24:49" (1/1) ... [2020-11-07 00:24:50,080 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:24:49" (1/1) ... [2020-11-07 00:24:50,091 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 00:24:50,092 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 00:24:50,093 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 00:24:50,093 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 00:24:50,094 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:24:49" (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 [2020-11-07 00:24:50,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 00:24:50,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 00:24:50,213 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 00:24:50,213 INFO L138 BoogieDeclarations]: Found implementation of procedure round_float [2020-11-07 00:24:50,213 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_float [2020-11-07 00:24:50,214 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 00:24:50,214 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 00:24:50,214 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 00:24:50,214 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 00:24:50,215 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 00:24:50,215 INFO L130 BoogieDeclarations]: Found specification of procedure round_float [2020-11-07 00:24:50,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-07 00:24:50,216 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 00:24:50,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 00:24:50,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 00:24:50,217 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-07 00:24:50,217 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_float [2020-11-07 00:24:50,217 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 00:24:50,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 00:24:50,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 00:24:50,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 00:24:50,932 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 00:24:50,933 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-07 00:24:50,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:24:50 BoogieIcfgContainer [2020-11-07 00:24:50,935 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 00:24:50,937 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 00:24:50,937 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 00:24:50,941 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 00:24:50,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:24:49" (1/3) ... [2020-11-07 00:24:50,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45eef9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:24:50, skipping insertion in model container [2020-11-07 00:24:50,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:24:49" (2/3) ... [2020-11-07 00:24:50,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45eef9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:24:50, skipping insertion in model container [2020-11-07 00:24:50,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:24:50" (3/3) ... [2020-11-07 00:24:50,945 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1032d.c [2020-11-07 00:24:50,962 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 00:24:50,966 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 00:24:50,979 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 00:24:51,005 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 00:24:51,006 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 00:24:51,006 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-07 00:24:51,006 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 00:24:51,006 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 00:24:51,006 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 00:24:51,007 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 00:24:51,007 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 00:24:51,024 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states. [2020-11-07 00:24:51,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-11-07 00:24:51,037 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:24:51,038 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] [2020-11-07 00:24:51,038 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:24:51,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:24:51,045 INFO L82 PathProgramCache]: Analyzing trace with hash -330644829, now seen corresponding path program 1 times [2020-11-07 00:24:51,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:24:51,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1211506904] [2020-11-07 00:24:51,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:24:51,128 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:24:51,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:24:51,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:24:51,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:24:51,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-11-07 00:24:51,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:24:51,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-11-07 00:24:51,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:24:51,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:24:51,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1211506904] [2020-11-07 00:24:51,405 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:24:51,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 00:24:51,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667239786] [2020-11-07 00:24:51,411 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 00:24:51,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:24:51,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 00:24:51,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 00:24:51,430 INFO L87 Difference]: Start difference. First operand 88 states. Second operand 4 states. [2020-11-07 00:24:51,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:24:51,746 INFO L93 Difference]: Finished difference Result 156 states and 180 transitions. [2020-11-07 00:24:51,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 00:24:51,748 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2020-11-07 00:24:51,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:24:51,776 INFO L225 Difference]: With dead ends: 156 [2020-11-07 00:24:51,777 INFO L226 Difference]: Without dead ends: 79 [2020-11-07 00:24:51,781 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 [2020-11-07 00:24:51,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-11-07 00:24:51,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2020-11-07 00:24:51,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-11-07 00:24:51,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2020-11-07 00:24:51,834 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 39 [2020-11-07 00:24:51,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:24:51,835 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2020-11-07 00:24:51,835 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 00:24:51,835 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2020-11-07 00:24:51,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-11-07 00:24:51,838 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:24:51,838 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] [2020-11-07 00:24:51,838 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 00:24:51,838 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:24:51,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:24:51,839 INFO L82 PathProgramCache]: Analyzing trace with hash -1312099802, now seen corresponding path program 1 times [2020-11-07 00:24:51,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:24:51,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1228931471] [2020-11-07 00:24:51,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:24:51,843 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:24:51,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 00:24:51,928 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 00:24:51,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 00:24:51,991 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 00:24:52,032 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-11-07 00:24:52,032 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-07 00:24:52,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 00:24:52,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:24:52 BoogieIcfgContainer [2020-11-07 00:24:52,061 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 00:24:52,066 INFO L168 Benchmark]: Toolchain (without parser) took 2388.95 ms. Allocated memory is still 156.2 MB. Free memory was 132.9 MB in the beginning and 124.0 MB in the end (delta: 8.9 MB). Peak memory consumption was 10.1 MB. Max. memory is 8.0 GB. [2020-11-07 00:24:52,068 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 156.2 MB. Free memory is still 130.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 00:24:52,070 INFO L168 Benchmark]: CACSL2BoogieTranslator took 311.17 ms. Allocated memory is still 156.2 MB. Free memory was 132.2 MB in the beginning and 121.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-11-07 00:24:52,072 INFO L168 Benchmark]: Boogie Preprocessor took 99.23 ms. Allocated memory is still 156.2 MB. Free memory was 121.5 MB in the beginning and 119.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-07 00:24:52,073 INFO L168 Benchmark]: RCFGBuilder took 843.08 ms. Allocated memory is still 156.2 MB. Free memory was 119.6 MB in the beginning and 129.6 MB in the end (delta: -9.9 MB). Peak memory consumption was 15.0 MB. Max. memory is 8.0 GB. [2020-11-07 00:24:52,075 INFO L168 Benchmark]: TraceAbstraction took 1123.81 ms. Allocated memory is still 156.2 MB. Free memory was 129.0 MB in the beginning and 124.0 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.6 MB. Max. memory is 8.0 GB. [2020-11-07 00:24:52,086 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 156.2 MB. Free memory is still 130.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 311.17 ms. Allocated memory is still 156.2 MB. Free memory was 132.2 MB in the beginning and 121.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 99.23 ms. Allocated memory is still 156.2 MB. Free memory was 121.5 MB in the beginning and 119.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 843.08 ms. Allocated memory is still 156.2 MB. Free memory was 119.6 MB in the beginning and 129.6 MB in the end (delta: -9.9 MB). Peak memory consumption was 15.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1123.81 ms. Allocated memory is still 156.2 MB. Free memory was 129.0 MB in the beginning and 124.0 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.6 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 someBinaryArithmeticFLOAToperation at line 44, overapproximation of bitwiseAnd at line 64. Possible FailurePath: [L75] float x = -1.0f / 0.0f; [L76] CALL, EXPR round_float(x) [L14] __uint32_t w; [L16] int exponent_less_127; [L19] ieee_float_shape_type gf_u; [L20] gf_u.value = (x) [L21] EXPR gf_u.word [L21] (w) = gf_u.word [L24] exponent_less_127 = (int)((w & 0x7f800000) >> 23) - 127 [L26] COND FALSE !(exponent_less_127 < 23) [L42] COND TRUE exponent_less_127 == 128 [L44] return x + x; [L76] RET, EXPR round_float(x) [L76] float res = round_float(x); [L79] CALL, EXPR isinf_float(res) [L58] __int32_t ix; [L60] ieee_float_shape_type gf_u; [L61] gf_u.value = (x) [L62] EXPR gf_u.word [L62] (ix) = gf_u.word [L64] ix &= 0x7fffffff [L65] return ((ix) == 0x7f800000L); [L79] RET, EXPR isinf_float(res) [L79] COND TRUE !isinf_float(res) [L80] CALL reach_error() [L3] __assert_fail("0", "float_req_bl_1032d.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 88 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 86 SDtfs, 15 SDslu, 58 SDs, 0 SdLazy, 98 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s 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=88occurred 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...