/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_1052a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 17:03:58,792 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 17:03:58,797 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 17:03:58,813 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 17:03:58,813 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 17:03:58,815 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 17:03:58,817 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 17:03:58,826 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 17:03:58,829 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 17:03:58,831 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 17:03:58,832 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 17:03:58,834 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 17:03:58,835 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 17:03:58,838 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 17:03:58,839 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 17:03:58,841 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 17:03:58,843 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 17:03:58,844 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 17:03:58,846 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 17:03:58,850 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 17:03:58,854 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 17:03:58,855 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 17:03:58,856 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 17:03:58,857 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 17:03:58,861 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-17 17:03:58,866 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-17 17:03:58,867 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-17 17:03:58,868 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-17 17:03:58,870 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-17 17:03:58,872 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-17 17:03:58,872 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-17 17:03:58,875 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-17 17:03:58,875 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-17 17:03:58,875 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 17:03:58,876 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 17:03:58,877 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 17:03:58,878 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-17 17:03:58,901 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 17:03:58,905 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 17:03:58,907 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 17:03:58,907 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 17:03:58,907 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 17:03:58,907 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 17:03:58,907 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 17:03:58,908 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 17:03:58,908 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 17:03:58,908 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 17:03:58,911 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 17:03:58,911 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 17:03:58,912 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 17:03:58,912 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 17:03:58,912 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 17:03:58,912 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-17 17:03:58,912 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 17:03:58,913 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 17:03:58,913 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 17:03:58,913 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 17:03:58,916 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-17 17:03:58,917 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 17:03:58,917 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 [2020-07-17 17:03:59,200 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 17:03:59,213 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 17:03:59,216 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 17:03:59,218 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 17:03:59,218 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 17:03:59,219 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1052a.c [2020-07-17 17:03:59,297 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d279ff336/88570eda3744463c9df63b91a26a2b62/FLAG2282479b3 [2020-07-17 17:03:59,723 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 17:03:59,729 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1052a.c [2020-07-17 17:03:59,734 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d279ff336/88570eda3744463c9df63b91a26a2b62/FLAG2282479b3 [2020-07-17 17:04:00,116 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d279ff336/88570eda3744463c9df63b91a26a2b62 [2020-07-17 17:04:00,124 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 17:04:00,127 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 17:04:00,128 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 17:04:00,129 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 17:04:00,132 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 17:04:00,133 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 05:04:00" (1/1) ... [2020-07-17 17:04:00,136 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74b6d741 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:04:00, skipping insertion in model container [2020-07-17 17:04:00,136 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 05:04:00" (1/1) ... [2020-07-17 17:04:00,144 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 17:04:00,163 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 17:04:00,352 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 17:04:00,356 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 17:04:00,386 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 17:04:00,489 INFO L208 MainTranslator]: Completed translation [2020-07-17 17:04:00,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:04:00 WrapperNode [2020-07-17 17:04:00,490 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 17:04:00,491 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 17:04:00,491 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 17:04:00,491 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 17:04:00,501 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:04:00" (1/1) ... [2020-07-17 17:04:00,502 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:04:00" (1/1) ... [2020-07-17 17:04:00,510 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:04:00" (1/1) ... [2020-07-17 17:04:00,511 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:04:00" (1/1) ... [2020-07-17 17:04:00,521 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:04:00" (1/1) ... [2020-07-17 17:04:00,527 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:04:00" (1/1) ... [2020-07-17 17:04:00,529 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:04:00" (1/1) ... [2020-07-17 17:04:00,532 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 17:04:00,532 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 17:04:00,533 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 17:04:00,533 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 17:04:00,534 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:04:00" (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 [2020-07-17 17:04:00,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 17:04:00,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 17:04:00,599 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_float [2020-07-17 17:04:00,599 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_float [2020-07-17 17:04:00,599 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 17:04:00,599 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 17:04:00,599 INFO L130 BoogieDeclarations]: Found specification of procedure floor_float [2020-07-17 17:04:00,599 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-17 17:04:00,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-17 17:04:00,600 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-17 17:04:00,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-17 17:04:00,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-17 17:04:00,600 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-17 17:04:00,600 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_float [2020-07-17 17:04:00,600 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 17:04:00,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 17:04:00,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 17:04:00,943 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 17:04:00,943 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-07-17 17:04:00,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 05:04:00 BoogieIcfgContainer [2020-07-17 17:04:00,949 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 17:04:00,950 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 17:04:00,950 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 17:04:00,953 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 17:04:00,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 05:04:00" (1/3) ... [2020-07-17 17:04:00,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@629271d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 05:04:00, skipping insertion in model container [2020-07-17 17:04:00,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:04:00" (2/3) ... [2020-07-17 17:04:00,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@629271d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 05:04:00, skipping insertion in model container [2020-07-17 17:04:00,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 05:04:00" (3/3) ... [2020-07-17 17:04:00,956 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1052a.c [2020-07-17 17:04:00,967 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-17 17:04:00,977 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 17:04:00,990 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 17:04:01,011 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 17:04:01,011 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 17:04:01,011 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-07-17 17:04:01,011 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 17:04:01,012 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 17:04:01,012 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 17:04:01,012 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 17:04:01,012 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 17:04:01,032 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states. [2020-07-17 17:04:01,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-07-17 17:04:01,045 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:04:01,045 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] [2020-07-17 17:04:01,046 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:04:01,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:04:01,051 INFO L82 PathProgramCache]: Analyzing trace with hash 270857975, now seen corresponding path program 1 times [2020-07-17 17:04:01,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:04:01,059 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1311413781] [2020-07-17 17:04:01,059 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:04:01,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:04:01,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:04:01,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:04:01,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:04:01,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 17:04:01,298 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1311413781] [2020-07-17 17:04:01,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 17:04:01,301 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-17 17:04:01,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003520192] [2020-07-17 17:04:01,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-17 17:04:01,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:04:01,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-17 17:04:01,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 17:04:01,324 INFO L87 Difference]: Start difference. First operand 88 states. Second operand 4 states. [2020-07-17 17:04:01,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:04:01,600 INFO L93 Difference]: Finished difference Result 160 states and 191 transitions. [2020-07-17 17:04:01,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-17 17:04:01,602 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-07-17 17:04:01,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:04:01,613 INFO L225 Difference]: With dead ends: 160 [2020-07-17 17:04:01,613 INFO L226 Difference]: Without dead ends: 81 [2020-07-17 17:04:01,618 INFO L675 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 [2020-07-17 17:04:01,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-07-17 17:04:01,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2020-07-17 17:04:01,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-07-17 17:04:01,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 89 transitions. [2020-07-17 17:04:01,675 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 89 transitions. Word has length 37 [2020-07-17 17:04:01,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:04:01,675 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 89 transitions. [2020-07-17 17:04:01,676 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-17 17:04:01,676 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 89 transitions. [2020-07-17 17:04:01,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-07-17 17:04:01,678 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:04:01,678 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:04:01,679 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 17:04:01,679 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:04:01,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:04:01,680 INFO L82 PathProgramCache]: Analyzing trace with hash 822923104, now seen corresponding path program 1 times [2020-07-17 17:04:01,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:04:01,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [834363008] [2020-07-17 17:04:01,681 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:04:01,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 17:04:01,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 17:04:02,013 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-17 17:04:02,013 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-17 17:04:02,015 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 17:04:02,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 05:04:02 BoogieIcfgContainer [2020-07-17 17:04:02,056 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 17:04:02,059 INFO L168 Benchmark]: Toolchain (without parser) took 1931.90 ms. Allocated memory was 146.3 MB in the beginning and 236.5 MB in the end (delta: 90.2 MB). Free memory was 104.4 MB in the beginning and 202.3 MB in the end (delta: -97.9 MB). Peak memory consumption was 78.4 MB. Max. memory is 7.1 GB. [2020-07-17 17:04:02,060 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 146.3 MB. Free memory was 122.7 MB in the beginning and 122.5 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-07-17 17:04:02,061 INFO L168 Benchmark]: CACSL2BoogieTranslator took 361.94 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 104.0 MB in the beginning and 181.8 MB in the end (delta: -77.8 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. [2020-07-17 17:04:02,062 INFO L168 Benchmark]: Boogie Preprocessor took 41.31 ms. Allocated memory is still 203.4 MB. Free memory was 181.8 MB in the beginning and 179.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-07-17 17:04:02,063 INFO L168 Benchmark]: RCFGBuilder took 416.20 ms. Allocated memory is still 203.4 MB. Free memory was 179.9 MB in the beginning and 155.5 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. [2020-07-17 17:04:02,064 INFO L168 Benchmark]: TraceAbstraction took 1106.20 ms. Allocated memory was 203.4 MB in the beginning and 236.5 MB in the end (delta: 33.0 MB). Free memory was 154.8 MB in the beginning and 202.3 MB in the end (delta: -47.5 MB). Peak memory consumption was 71.7 MB. Max. memory is 7.1 GB. [2020-07-17 17:04:02,068 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 146.3 MB. Free memory was 122.7 MB in the beginning and 122.5 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 361.94 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 104.0 MB in the beginning and 181.8 MB in the end (delta: -77.8 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 41.31 ms. Allocated memory is still 203.4 MB. Free memory was 181.8 MB in the beginning and 179.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 416.20 ms. Allocated memory is still 203.4 MB. Free memory was 179.9 MB in the beginning and 155.5 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1106.20 ms. Allocated memory was 203.4 MB in the beginning and 236.5 MB in the end (delta: 33.0 MB). Free memory was 154.8 MB in the beginning and 202.3 MB in the end (delta: -47.5 MB). Peak memory consumption was 71.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 80]: 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: [L11] static const float huge_floor = 1.0e30; VAL [\old(huge_floor)=1000000000000000000000000000004, huge_floor=1000000000000000000000000000000] [L75] float x = 1.0f / 0.0f; VAL [huge_floor=1000000000000000000000000000000] [L76] CALL, EXPR floor_float(x) VAL [\old(x)=1000000000000000000000000000005, huge_floor=1000000000000000000000000000000] [L14] __int32_t i0, j0; VAL [\old(x)=1000000000000000000000000000005, huge_floor=1000000000000000000000000000000, x=1000000000000000000000000000005] [L15] __uint32_t i, ix; VAL [\old(x)=1000000000000000000000000000005, huge_floor=1000000000000000000000000000000, x=1000000000000000000000000000005] [L17] ieee_float_shape_type gf_u; VAL [\old(x)=1000000000000000000000000000005, gf_u={3:0}, huge_floor=1000000000000000000000000000000, x=1000000000000000000000000000005] [L18] gf_u.value = (x) VAL [\old(x)=1000000000000000000000000000005, gf_u={3:0}, huge_floor=1000000000000000000000000000000, x=1000000000000000000000000000005] [L19] EXPR gf_u.word VAL [\old(x)=1000000000000000000000000000005, gf_u={3:0}, gf_u.word=4294967296, huge_floor=1000000000000000000000000000000, x=1000000000000000000000000000005] [L19] (i0) = gf_u.word VAL [(i0) = gf_u.word=1000000000000000000000000000007, \old(x)=1000000000000000000000000000005, gf_u={3:0}, gf_u.word=4294967296, huge_floor=1000000000000000000000000000000, i0=0, x=1000000000000000000000000000005] [L21] ix = (i0 & 0x7fffffff) VAL [\old(x)=1000000000000000000000000000005, huge_floor=1000000000000000000000000000000, i0=0, x=1000000000000000000000000000005] [L22] j0 = (ix >> 23) - 0x7f VAL [\old(x)=1000000000000000000000000000005, huge_floor=1000000000000000000000000000000, i=18014396353609728, i0=0, j0=2147483264, x=1000000000000000000000000000005] [L23] COND FALSE !(j0 < 23) VAL [\old(x)=1000000000000000000000000000005, huge_floor=1000000000000000000000000000000, i=18014396353609728, i0=0, j0=2147483264, x=1000000000000000000000000000005] [L43] COND TRUE !((ix) < 0x7f800000L) VAL [\old(x)=1000000000000000000000000000005, huge_floor=1000000000000000000000000000000, i=18014396353609728, i0=0, j0=2147483264, x=1000000000000000000000000000005] [L44] return x + x; VAL [\old(x)=1000000000000000000000000000005, huge_floor=1000000000000000000000000000000, i=18014396353609728, i0=0, j0=2147483264, x=1000000000000000000000000000005] [L76] RET, EXPR floor_float(x) VAL [floor_float(x)=1000000000000000000000000000002, huge_floor=1000000000000000000000000000000, x=1000000000000000000000000000005] [L76] float res = floor_float(x); VAL [floor_float(x)=1000000000000000000000000000002, huge_floor=1000000000000000000000000000000, res=1000000000000000000000000000002, x=1000000000000000000000000000005] [L79] CALL, EXPR isinf_float(res) VAL [\old(x)=1000000000000000000000000000002, huge_floor=1000000000000000000000000000000] [L58] __int32_t ix; VAL [\old(x)=1000000000000000000000000000002, huge_floor=1000000000000000000000000000000, x=1000000000000000000000000000002] [L60] ieee_float_shape_type gf_u; VAL [\old(x)=1000000000000000000000000000002, gf_u={2:0}, huge_floor=1000000000000000000000000000000, x=1000000000000000000000000000002] [L61] gf_u.value = (x) VAL [\old(x)=1000000000000000000000000000002, gf_u={2:0}, huge_floor=1000000000000000000000000000000, x=1000000000000000000000000000002] [L62] EXPR gf_u.word VAL [\old(x)=1000000000000000000000000000002, gf_u={2:0}, gf_u.word=8589934592, huge_floor=1000000000000000000000000000000, x=1000000000000000000000000000002] [L62] (ix) = gf_u.word VAL [(ix) = gf_u.word=1000000000000000000000000000008, \old(x)=1000000000000000000000000000002, gf_u={2:0}, gf_u.word=8589934592, huge_floor=1000000000000000000000000000000, ix=0, x=1000000000000000000000000000002] [L64] ix &= 0x7fffffff VAL [\old(x)=1000000000000000000000000000002, huge_floor=1000000000000000000000000000000, x=1000000000000000000000000000002] [L65] return ((ix) == 0x7f800000L); VAL [\old(x)=1000000000000000000000000000002, \result=0, huge_floor=1000000000000000000000000000000, ix=0, x=1000000000000000000000000000002] [L79] RET, EXPR isinf_float(res) VAL [huge_floor=1000000000000000000000000000000, isinf_float(res)=0, res=1000000000000000000000000000002, x=1000000000000000000000000000005] [L79] COND TRUE !isinf_float(res) VAL [huge_floor=1000000000000000000000000000000, isinf_float(res)=0, res=1000000000000000000000000000002, x=1000000000000000000000000000005] [L80] __VERIFIER_error() VAL [huge_floor=1000000000000000000000000000000, res=1000000000000000000000000000002, x=1000000000000000000000000000005] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 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: 92 SDtfs, 17 SDslu, 68 SDs, 0 SdLazy, 100 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, 0.0s 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 92 NumberOfCodeBlocks, 92 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 2592 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...