/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1052b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 04:46:33,993 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 04:46:33,996 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 04:46:34,031 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 04:46:34,032 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 04:46:34,033 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 04:46:34,035 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 04:46:34,037 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 04:46:34,039 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 04:46:34,040 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 04:46:34,042 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 04:46:34,043 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 04:46:34,044 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 04:46:34,045 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 04:46:34,046 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 04:46:34,048 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 04:46:34,049 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 04:46:34,050 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 04:46:34,072 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 04:46:34,074 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 04:46:34,076 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 04:46:34,077 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 04:46:34,079 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 04:46:34,080 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 04:46:34,086 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 04:46:34,106 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 04:46:34,108 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 04:46:34,109 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 04:46:34,110 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 04:46:34,134 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 04:46:34,135 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 04:46:34,139 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 04:46:34,139 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 04:46:34,139 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 04:46:34,139 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 04:46:34,140 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 04:46:34,140 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 04:46:34,140 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 04:46:34,140 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 04:46:34,141 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 04:46:34,142 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 04:46:34,142 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 04:46:34,142 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 04:46:34,143 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 04:46:34,143 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 04:46:34,143 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 04:46:34,143 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 04:46:34,144 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 04:46:34,144 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 04:46:34,144 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 04:46:34,144 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 04:46:34,145 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-11-07 04:46:34,554 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 04:46:34,593 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 04:46:34,596 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 04:46:34,599 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 04:46:34,600 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 04:46:34,601 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1052b.c [2020-11-07 04:46:34,685 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62e422521/34b9184a96a5466ab0a3f2e8273cc039/FLAG0f81695c1 [2020-11-07 04:46:35,334 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 04:46:35,334 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1052b.c [2020-11-07 04:46:35,343 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62e422521/34b9184a96a5466ab0a3f2e8273cc039/FLAG0f81695c1 [2020-11-07 04:46:35,676 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62e422521/34b9184a96a5466ab0a3f2e8273cc039 [2020-11-07 04:46:35,679 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 04:46:35,685 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 04:46:35,688 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 04:46:35,689 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 04:46:35,693 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 04:46:35,694 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:46:35" (1/1) ... [2020-11-07 04:46:35,697 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ee9ca2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:46:35, skipping insertion in model container [2020-11-07 04:46:35,697 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:46:35" (1/1) ... [2020-11-07 04:46:35,706 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 04:46:35,723 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 04:46:35,902 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 04:46:35,919 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 04:46:35,987 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 04:46:36,008 INFO L208 MainTranslator]: Completed translation [2020-11-07 04:46:36,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:46:36 WrapperNode [2020-11-07 04:46:36,009 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 04:46:36,011 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 04:46:36,011 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 04:46:36,011 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 04:46:36,025 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:46:36" (1/1) ... [2020-11-07 04:46:36,026 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:46:36" (1/1) ... [2020-11-07 04:46:36,051 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:46:36" (1/1) ... [2020-11-07 04:46:36,052 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:46:36" (1/1) ... [2020-11-07 04:46:36,080 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:46:36" (1/1) ... [2020-11-07 04:46:36,092 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:46:36" (1/1) ... [2020-11-07 04:46:36,100 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:46:36" (1/1) ... [2020-11-07 04:46:36,107 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 04:46:36,109 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 04:46:36,109 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 04:46:36,109 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 04:46:36,111 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:46:36" (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 04:46:36,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 04:46:36,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 04:46:36,216 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 04:46:36,216 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_float [2020-11-07 04:46:36,216 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_float [2020-11-07 04:46:36,217 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 04:46:36,217 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 04:46:36,218 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 04:46:36,218 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 04:46:36,218 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 04:46:36,219 INFO L130 BoogieDeclarations]: Found specification of procedure floor_float [2020-11-07 04:46:36,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-07 04:46:36,219 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 04:46:36,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 04:46:36,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 04:46:36,220 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-07 04:46:36,221 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_float [2020-11-07 04:46:36,221 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 04:46:36,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 04:46:36,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 04:46:36,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 04:46:36,952 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 04:46:36,953 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-07 04:46:36,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:46:36 BoogieIcfgContainer [2020-11-07 04:46:36,955 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 04:46:36,957 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 04:46:36,957 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 04:46:36,960 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 04:46:36,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:46:35" (1/3) ... [2020-11-07 04:46:36,961 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9e2d879 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:46:36, skipping insertion in model container [2020-11-07 04:46:36,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:46:36" (2/3) ... [2020-11-07 04:46:36,962 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9e2d879 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:46:36, skipping insertion in model container [2020-11-07 04:46:36,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:46:36" (3/3) ... [2020-11-07 04:46:36,964 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1052b.c [2020-11-07 04:46:36,979 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 04:46:36,983 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 04:46:36,996 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 04:46:37,018 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 04:46:37,018 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 04:46:37,019 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-07 04:46:37,019 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 04:46:37,019 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 04:46:37,019 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 04:46:37,019 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 04:46:37,019 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 04:46:37,035 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states. [2020-11-07 04:46:37,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-11-07 04:46:37,046 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 04:46:37,047 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] [2020-11-07 04:46:37,047 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 04:46:37,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 04:46:37,053 INFO L82 PathProgramCache]: Analyzing trace with hash -380521634, now seen corresponding path program 1 times [2020-11-07 04:46:37,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 04:46:37,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1565781429] [2020-11-07 04:46:37,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 04:46:37,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:46:37,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 04:46:37,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:46:37,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 04:46:37,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:46:37,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-11-07 04:46:37,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:46:37,362 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 04:46:37,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1565781429] [2020-11-07 04:46:37,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 04:46:37,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 04:46:37,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118548653] [2020-11-07 04:46:37,371 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 04:46:37,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 04:46:37,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 04:46:37,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 04:46:37,390 INFO L87 Difference]: Start difference. First operand 96 states. Second operand 4 states. [2020-11-07 04:46:37,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 04:46:37,764 INFO L93 Difference]: Finished difference Result 169 states and 201 transitions. [2020-11-07 04:46:37,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 04:46:37,767 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2020-11-07 04:46:37,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 04:46:37,795 INFO L225 Difference]: With dead ends: 169 [2020-11-07 04:46:37,795 INFO L226 Difference]: Without dead ends: 87 [2020-11-07 04:46:37,802 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-07 04:46:37,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-11-07 04:46:37,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2020-11-07 04:46:37,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-11-07 04:46:37,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 95 transitions. [2020-11-07 04:46:37,903 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 95 transitions. Word has length 43 [2020-11-07 04:46:37,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 04:46:37,904 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 95 transitions. [2020-11-07 04:46:37,904 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 04:46:37,904 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 95 transitions. [2020-11-07 04:46:37,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-11-07 04:46:37,911 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 04:46:37,911 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] [2020-11-07 04:46:37,912 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 04:46:37,912 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 04:46:37,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 04:46:37,913 INFO L82 PathProgramCache]: Analyzing trace with hash 42526672, now seen corresponding path program 1 times [2020-11-07 04:46:37,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 04:46:37,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1862092118] [2020-11-07 04:46:37,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 04:46:38,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 04:46:38,029 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 04:46:38,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 04:46:38,138 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 04:46:38,201 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-11-07 04:46:38,201 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-07 04:46:38,203 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 04:46:38,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 04:46:38 BoogieIcfgContainer [2020-11-07 04:46:38,260 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 04:46:38,262 INFO L168 Benchmark]: Toolchain (without parser) took 2580.74 ms. Allocated memory is still 163.6 MB. Free memory was 140.2 MB in the beginning and 61.3 MB in the end (delta: 78.9 MB). Peak memory consumption was 80.3 MB. Max. memory is 8.0 GB. [2020-11-07 04:46:38,263 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 163.6 MB. Free memory is still 138.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 04:46:38,264 INFO L168 Benchmark]: CACSL2BoogieTranslator took 321.21 ms. Allocated memory is still 163.6 MB. Free memory was 139.6 MB in the beginning and 129.2 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-11-07 04:46:38,265 INFO L168 Benchmark]: Boogie Preprocessor took 97.23 ms. Allocated memory is still 163.6 MB. Free memory was 129.0 MB in the beginning and 127.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-07 04:46:38,266 INFO L168 Benchmark]: RCFGBuilder took 846.39 ms. Allocated memory is still 163.6 MB. Free memory was 127.2 MB in the beginning and 134.7 MB in the end (delta: -7.5 MB). Peak memory consumption was 15.2 MB. Max. memory is 8.0 GB. [2020-11-07 04:46:38,267 INFO L168 Benchmark]: TraceAbstraction took 1303.21 ms. Allocated memory is still 163.6 MB. Free memory was 134.7 MB in the beginning and 61.3 MB in the end (delta: 73.4 MB). Peak memory consumption was 73.4 MB. Max. memory is 8.0 GB. [2020-11-07 04:46:38,271 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 163.6 MB. Free memory is still 138.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 321.21 ms. Allocated memory is still 163.6 MB. Free memory was 139.6 MB in the beginning and 129.2 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 97.23 ms. Allocated memory is still 163.6 MB. Free memory was 129.0 MB in the beginning and 127.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 846.39 ms. Allocated memory is still 163.6 MB. Free memory was 127.2 MB in the beginning and 134.7 MB in the end (delta: -7.5 MB). Peak memory consumption was 15.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1303.21 ms. Allocated memory is still 163.6 MB. Free memory was 134.7 MB in the beginning and 61.3 MB in the end (delta: 73.4 MB). Peak memory consumption was 73.4 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 46, overapproximation of bitwiseAnd at line 66. Possible FailurePath: [L13] static const float huge_floor = 1.0e30; VAL [\old(huge_floor)=1000000000000000000000000000006, huge_floor=1000000000000000000000000000000] [L77] float x = -1.0f / 0.0f; VAL [huge_floor=1000000000000000000000000000000] [L78] CALL, EXPR floor_float(x) VAL [\old(x)=1000000000000000000000000000010, huge_floor=1000000000000000000000000000000] [L16] __int32_t i0, j0; VAL [\old(x)=1000000000000000000000000000010, huge_floor=1000000000000000000000000000000, x=1000000000000000000000000000010] [L17] __uint32_t i, ix; VAL [\old(x)=1000000000000000000000000000010, huge_floor=1000000000000000000000000000000, x=1000000000000000000000000000010] [L19] ieee_float_shape_type gf_u; VAL [\old(x)=1000000000000000000000000000010, gf_u={8:0}, huge_floor=1000000000000000000000000000000, x=1000000000000000000000000000010] [L20] gf_u.value = (x) VAL [\old(x)=1000000000000000000000000000010, gf_u={8:0}, huge_floor=1000000000000000000000000000000, x=1000000000000000000000000000010] [L21] EXPR gf_u.word VAL [\old(x)=1000000000000000000000000000010, gf_u={8:0}, gf_u.word=8589934590, huge_floor=1000000000000000000000000000000, x=1000000000000000000000000000010] [L21] (i0) = gf_u.word VAL [(i0) = gf_u.word=1000000000000000000000000000003, \old(x)=1000000000000000000000000000010, gf_u={8:0}, gf_u.word=8589934590, huge_floor=1000000000000000000000000000000, i0=-2, x=1000000000000000000000000000010] [L23] ix = (i0 & 0x7fffffff) VAL [\old(x)=1000000000000000000000000000010, huge_floor=1000000000000000000000000000000, i0=-2, x=1000000000000000000000000000010] [L24] j0 = (ix >> 23) - 0x7f VAL [\old(x)=1000000000000000000000000000010, huge_floor=1000000000000000000000000000000, i=-36028792723996673, i0=-2, j0=384, x=1000000000000000000000000000010] [L25] COND FALSE !(j0 < 23) VAL [\old(x)=1000000000000000000000000000010, huge_floor=1000000000000000000000000000000, i=-36028792723996673, i0=-2, j0=384, x=1000000000000000000000000000010] [L45] COND TRUE !((ix) < 0x7f800000L) VAL [\old(x)=1000000000000000000000000000010, huge_floor=1000000000000000000000000000000, i=-36028792723996673, i0=-2, j0=384, x=1000000000000000000000000000010] [L46] return x + x; VAL [\old(x)=1000000000000000000000000000010, huge_floor=1000000000000000000000000000000, i=-36028792723996673, i0=-2, j0=384, x=1000000000000000000000000000010] [L78] RET, EXPR floor_float(x) VAL [floor_float(x)=1000000000000000000000000000004, huge_floor=1000000000000000000000000000000, x=1000000000000000000000000000010] [L78] float res = floor_float(x); VAL [floor_float(x)=1000000000000000000000000000004, huge_floor=1000000000000000000000000000000, res=1000000000000000000000000000004, x=1000000000000000000000000000010] [L81] CALL, EXPR isinf_float(res) VAL [\old(x)=1000000000000000000000000000004, huge_floor=1000000000000000000000000000000] [L60] __int32_t ix; VAL [\old(x)=1000000000000000000000000000004, huge_floor=1000000000000000000000000000000, x=1000000000000000000000000000004] [L62] ieee_float_shape_type gf_u; VAL [\old(x)=1000000000000000000000000000004, gf_u={3:0}, huge_floor=1000000000000000000000000000000, x=1000000000000000000000000000004] [L63] gf_u.value = (x) VAL [\old(x)=1000000000000000000000000000004, gf_u={3:0}, huge_floor=1000000000000000000000000000000, x=1000000000000000000000000000004] [L64] EXPR gf_u.word VAL [\old(x)=1000000000000000000000000000004, gf_u={3:0}, gf_u.word=4294967295, huge_floor=1000000000000000000000000000000, x=1000000000000000000000000000004] [L64] (ix) = gf_u.word VAL [(ix) = gf_u.word=1000000000000000000000000000008, \old(x)=1000000000000000000000000000004, gf_u={3:0}, gf_u.word=4294967295, huge_floor=1000000000000000000000000000000, ix=-1, x=1000000000000000000000000000004] [L66] ix &= 0x7fffffff VAL [\old(x)=1000000000000000000000000000004, huge_floor=1000000000000000000000000000000, x=1000000000000000000000000000004] [L67] return ((ix) == 0x7f800000L); VAL [\old(x)=1000000000000000000000000000004, \result=0, huge_floor=1000000000000000000000000000000, ix=0, x=1000000000000000000000000000004] [L81] RET, EXPR isinf_float(res) VAL [huge_floor=1000000000000000000000000000000, isinf_float(res)=0, res=1000000000000000000000000000004, x=1000000000000000000000000000010] [L81] COND TRUE !isinf_float(res) VAL [huge_floor=1000000000000000000000000000000, isinf_float(res)=0, res=1000000000000000000000000000004, x=1000000000000000000000000000010] [L82] CALL reach_error() VAL [huge_floor=1000000000000000000000000000000] [L3] __assert_fail("0", "float_req_bl_1052b.c", 3, "reach_error") VAL [huge_floor=1000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 96 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 98 SDtfs, 19 SDslu, 67 SDs, 0 SdLazy, 109 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, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=96occurred 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 104 NumberOfCodeBlocks, 104 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 42 ConstructedInterpolants, 0 QuantifiedInterpolants, 4158 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, 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...