/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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_1072b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 21:36:56,257 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 21:36:56,261 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 21:36:56,286 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 21:36:56,287 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 21:36:56,288 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 21:36:56,290 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 21:36:56,292 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 21:36:56,294 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 21:36:56,295 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 21:36:56,296 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 21:36:56,297 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 21:36:56,298 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 21:36:56,299 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 21:36:56,300 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 21:36:56,302 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 21:36:56,303 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 21:36:56,304 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 21:36:56,306 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 21:36:56,308 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 21:36:56,310 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 21:36:56,311 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 21:36:56,313 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 21:36:56,314 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 21:36:56,316 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 21:36:56,317 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 21:36:56,317 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 21:36:56,318 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 21:36:56,319 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 21:36:56,320 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 21:36:56,320 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 21:36:56,321 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 21:36:56,322 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 21:36:56,323 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 21:36:56,324 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 21:36:56,324 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 21:36:56,325 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 21:36:56,325 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 21:36:56,326 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 21:36:56,327 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 21:36:56,328 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 21:36:56,328 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 21:36:56,341 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 21:36:56,341 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 21:36:56,342 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 21:36:56,342 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 21:36:56,343 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 21:36:56,343 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 21:36:56,343 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 21:36:56,343 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 21:36:56,343 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 21:36:56,344 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 21:36:56,344 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 21:36:56,344 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 21:36:56,344 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 21:36:56,344 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 21:36:56,345 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 21:36:56,345 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 21:36:56,345 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 21:36:56,345 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 21:36:56,346 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 21:36:56,346 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 21:36:56,346 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 21:36:56,346 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 21:36:56,346 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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 [2020-09-04 21:36:56,783 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 21:36:56,808 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 21:36:56,815 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 21:36:56,817 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 21:36:56,817 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 21:36:56,818 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1072b.c [2020-09-04 21:36:56,906 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/43fab31fc/4e7cbb7738e740148442301b85049564/FLAG12a1ded9c [2020-09-04 21:36:57,470 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 21:36:57,471 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1072b.c [2020-09-04 21:36:57,479 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/43fab31fc/4e7cbb7738e740148442301b85049564/FLAG12a1ded9c [2020-09-04 21:36:57,829 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/43fab31fc/4e7cbb7738e740148442301b85049564 [2020-09-04 21:36:57,843 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 21:36:57,846 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 21:36:57,847 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 21:36:57,847 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 21:36:57,851 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 21:36:57,852 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 09:36:57" (1/1) ... [2020-09-04 21:36:57,857 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d72532b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:36:57, skipping insertion in model container [2020-09-04 21:36:57,857 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 09:36:57" (1/1) ... [2020-09-04 21:36:57,866 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 21:36:57,892 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 21:36:58,141 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 21:36:58,148 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 21:36:58,192 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 21:36:58,217 INFO L208 MainTranslator]: Completed translation [2020-09-04 21:36:58,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:36:58 WrapperNode [2020-09-04 21:36:58,218 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 21:36:58,219 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 21:36:58,219 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 21:36:58,219 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 21:36:58,311 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:36:58" (1/1) ... [2020-09-04 21:36:58,311 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:36:58" (1/1) ... [2020-09-04 21:36:58,322 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:36:58" (1/1) ... [2020-09-04 21:36:58,323 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:36:58" (1/1) ... [2020-09-04 21:36:58,337 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:36:58" (1/1) ... [2020-09-04 21:36:58,344 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:36:58" (1/1) ... [2020-09-04 21:36:58,347 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:36:58" (1/1) ... [2020-09-04 21:36:58,350 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 21:36:58,350 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 21:36:58,350 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 21:36:58,351 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 21:36:58,352 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:36:58" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 21:36:58,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 21:36:58,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 21:36:58,427 INFO L138 BoogieDeclarations]: Found implementation of procedure trunc_float [2020-09-04 21:36:58,427 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_float [2020-09-04 21:36:58,427 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 21:36:58,427 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 21:36:58,428 INFO L130 BoogieDeclarations]: Found specification of procedure trunc_float [2020-09-04 21:36:58,428 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 21:36:58,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-04 21:36:58,428 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 21:36:58,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 21:36:58,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 21:36:58,429 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-04 21:36:58,429 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_float [2020-09-04 21:36:58,429 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 21:36:58,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 21:36:58,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 21:36:58,835 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 21:36:58,836 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-04 21:36:58,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 09:36:58 BoogieIcfgContainer [2020-09-04 21:36:58,842 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 21:36:58,843 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 21:36:58,843 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 21:36:58,847 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 21:36:58,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 09:36:57" (1/3) ... [2020-09-04 21:36:58,849 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@150ac94b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 09:36:58, skipping insertion in model container [2020-09-04 21:36:58,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:36:58" (2/3) ... [2020-09-04 21:36:58,849 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@150ac94b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 09:36:58, skipping insertion in model container [2020-09-04 21:36:58,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 09:36:58" (3/3) ... [2020-09-04 21:36:58,859 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1072b.c [2020-09-04 21:36:58,870 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 21:36:58,879 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 21:36:58,900 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 21:36:58,923 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 21:36:58,923 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 21:36:58,924 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-04 21:36:58,924 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 21:36:58,924 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 21:36:58,924 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 21:36:58,924 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 21:36:58,924 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 21:36:58,944 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states. [2020-09-04 21:36:58,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-04 21:36:58,957 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:36:58,958 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] [2020-09-04 21:36:58,958 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:36:58,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:36:58,966 INFO L82 PathProgramCache]: Analyzing trace with hash 1694901136, now seen corresponding path program 1 times [2020-09-04 21:36:58,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:36:58,977 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1561072311] [2020-09-04 21:36:58,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:36:59,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:36:59,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:36:59,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:36:59,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 21:36:59,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:36:59,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-04 21:36:59,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:36:59,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 21:36:59,310 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1561072311] [2020-09-04 21:36:59,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 21:36:59,313 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 21:36:59,314 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709606638] [2020-09-04 21:36:59,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 21:36:59,320 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:36:59,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 21:36:59,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 21:36:59,336 INFO L87 Difference]: Start difference. First operand 83 states. Second operand 4 states. [2020-09-04 21:36:59,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:36:59,610 INFO L93 Difference]: Finished difference Result 152 states and 175 transitions. [2020-09-04 21:36:59,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-04 21:36:59,613 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2020-09-04 21:36:59,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:36:59,625 INFO L225 Difference]: With dead ends: 152 [2020-09-04 21:36:59,625 INFO L226 Difference]: Without dead ends: 76 [2020-09-04 21:36:59,630 INFO L675 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 [2020-09-04 21:36:59,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-09-04 21:36:59,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2020-09-04 21:36:59,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-09-04 21:36:59,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 78 transitions. [2020-09-04 21:36:59,691 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 78 transitions. Word has length 35 [2020-09-04 21:36:59,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:36:59,692 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 78 transitions. [2020-09-04 21:36:59,692 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 21:36:59,692 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 78 transitions. [2020-09-04 21:36:59,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-04 21:36:59,694 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:36:59,695 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] [2020-09-04 21:36:59,695 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 21:36:59,695 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:36:59,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:36:59,696 INFO L82 PathProgramCache]: Analyzing trace with hash -331067037, now seen corresponding path program 1 times [2020-09-04 21:36:59,697 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:36:59,697 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1301723972] [2020-09-04 21:36:59,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:36:59,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 21:36:59,782 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 21:36:59,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 21:36:59,851 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 21:36:59,899 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 21:36:59,900 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 21:36:59,901 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 21:36:59,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 09:36:59 BoogieIcfgContainer [2020-09-04 21:36:59,948 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 21:36:59,952 INFO L168 Benchmark]: Toolchain (without parser) took 2105.19 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 102.7 MB in the beginning and 98.4 MB in the end (delta: 4.3 MB). Peak memory consumption was 67.2 MB. Max. memory is 7.1 GB. [2020-09-04 21:36:59,953 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 139.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 21:36:59,954 INFO L168 Benchmark]: CACSL2BoogieTranslator took 371.61 ms. Allocated memory is still 139.5 MB. Free memory was 102.5 MB in the beginning and 91.6 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. [2020-09-04 21:36:59,956 INFO L168 Benchmark]: Boogie Preprocessor took 131.34 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 91.6 MB in the beginning and 179.8 MB in the end (delta: -88.2 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. [2020-09-04 21:36:59,958 INFO L168 Benchmark]: RCFGBuilder took 491.77 ms. Allocated memory is still 202.4 MB. Free memory was 179.8 MB in the beginning and 156.0 MB in the end (delta: 23.8 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. [2020-09-04 21:36:59,959 INFO L168 Benchmark]: TraceAbstraction took 1104.92 ms. Allocated memory is still 202.4 MB. Free memory was 155.4 MB in the beginning and 98.4 MB in the end (delta: 56.9 MB). Peak memory consumption was 56.9 MB. Max. memory is 7.1 GB. [2020-09-04 21:36:59,966 INFO L336 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 139.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 371.61 ms. Allocated memory is still 139.5 MB. Free memory was 102.5 MB in the beginning and 91.6 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 131.34 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 91.6 MB in the beginning and 179.8 MB in the end (delta: -88.2 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 491.77 ms. Allocated memory is still 202.4 MB. Free memory was 179.8 MB in the beginning and 156.0 MB in the end (delta: 23.8 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1104.92 ms. Allocated memory is still 202.4 MB. Free memory was 155.4 MB in the beginning and 98.4 MB in the end (delta: 56.9 MB). Peak memory consumption was 56.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 66]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryArithmeticFLOAToperation at line 61, overapproximation of bitwiseAnd at line 50. Possible FailurePath: [L61] float x = -1.0f / 0.0f; [L62] CALL, EXPR trunc_float(x) VAL [\old(x)=8589934596] [L12] __int32_t signbit, w, exponent_less_127; VAL [\old(x)=8589934596, x=8589934596] [L14] ieee_float_shape_type gf_u; VAL [\old(x)=8589934596, gf_u={3:0}, x=8589934596] [L15] gf_u.value = (x) VAL [\old(x)=8589934596, gf_u={3:0}, x=8589934596] [L16] EXPR gf_u.word VAL [\old(x)=8589934596, gf_u={3:0}, gf_u.word=8589934590, x=8589934596] [L16] (w) = gf_u.word VAL [\old(x)=8589934596, gf_u={3:0}, gf_u.word=8589934590, w=-2, x=8589934596] [L18] signbit = w & 0x80000000 VAL [\old(x)=8589934596, signbit=-3, w=-2, x=8589934596] [L19] exponent_less_127 = ((w & 0x7f800000) >> 23) - 127 VAL [\old(x)=8589934596, exponent_less_127=23, signbit=-3, w=-2, x=8589934596] [L20] COND FALSE !(exponent_less_127 < 23) VAL [\old(x)=8589934596, exponent_less_127=23, signbit=-3, w=-2, x=8589934596] [L36] COND FALSE !(exponent_less_127 == 255) VAL [\old(x)=8589934596, exponent_less_127=23, signbit=-3, w=-2, x=8589934596] [L39] return x; VAL [\old(x)=8589934596, \result=8589934596, exponent_less_127=23, signbit=-3, w=-2, x=8589934596] [L62] RET, EXPR trunc_float(x) VAL [trunc_float(x)=8589934596, x=8589934596] [L62] float res = trunc_float(x); VAL [res=8589934596, trunc_float(x)=8589934596, x=8589934596] [L65] CALL, EXPR isinf_float(res) VAL [\old(x)=8589934596] [L44] __int32_t ix; VAL [\old(x)=8589934596, x=8589934596] [L46] ieee_float_shape_type gf_u; VAL [\old(x)=8589934596, gf_u={2:0}, x=8589934596] [L47] gf_u.value = (x) VAL [\old(x)=8589934596, gf_u={2:0}, x=8589934596] [L48] EXPR gf_u.word VAL [\old(x)=8589934596, gf_u={2:0}, gf_u.word=4294967295, x=8589934596] [L48] (ix) = gf_u.word VAL [\old(x)=8589934596, gf_u={2:0}, gf_u.word=4294967295, ix=-1, x=8589934596] [L50] ix &= 0x7fffffff VAL [\old(x)=8589934596, x=8589934596] [L51] return ((ix) == 0x7f800000L); VAL [\old(x)=8589934596, \result=0, ix=0, x=8589934596] [L65] RET, EXPR isinf_float(res) VAL [isinf_float(res)=0, res=8589934596, x=8589934596] [L65] COND TRUE !isinf_float(res) VAL [isinf_float(res)=0, res=8589934596, x=8589934596] [L66] __VERIFIER_error() VAL [res=8589934596, x=8589934596] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 83 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 81 SDtfs, 15 SDslu, 54 SDs, 0 SdLazy, 94 SolverSat, 6 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=83occurred 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, 0.2s InterpolantComputationTime, 88 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 34 ConstructedInterpolants, 0 QuantifiedInterpolants, 2278 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...