/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.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1092a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-89f541c [2020-08-27 21:47:10,037 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-27 21:47:10,042 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-27 21:47:10,085 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-27 21:47:10,086 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-27 21:47:10,094 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-27 21:47:10,098 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-27 21:47:10,101 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-27 21:47:10,104 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-27 21:47:10,108 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-27 21:47:10,109 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-27 21:47:10,110 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-27 21:47:10,111 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-27 21:47:10,114 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-27 21:47:10,118 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-27 21:47:10,120 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-27 21:47:10,122 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-27 21:47:10,123 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-27 21:47:10,125 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-27 21:47:10,133 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-27 21:47:10,136 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-27 21:47:10,137 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-27 21:47:10,138 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-27 21:47:10,139 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-27 21:47:10,152 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-27 21:47:10,165 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-27 21:47:10,166 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-27 21:47:10,167 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-27 21:47:10,168 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-27 21:47:10,193 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-27 21:47:10,193 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-27 21:47:10,194 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-27 21:47:10,195 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-27 21:47:10,195 INFO L138 SettingsManager]: * Use SBE=true [2020-08-27 21:47:10,195 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-27 21:47:10,195 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-27 21:47:10,196 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-27 21:47:10,196 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-27 21:47:10,196 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-27 21:47:10,196 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-27 21:47:10,196 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-27 21:47:10,197 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-27 21:47:10,197 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-27 21:47:10,197 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-27 21:47:10,197 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-27 21:47:10,197 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-27 21:47:10,198 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-27 21:47:10,198 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-27 21:47:10,198 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-27 21:47:10,198 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-27 21:47:10,198 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-27 21:47:10,199 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-27 21:47:10,199 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-27 21:47:10,199 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-27 21:47:10,199 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-27 21:47:10,199 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-27 21:47:10,200 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-27 21:47:10,200 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-27 21:47:10,200 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES 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: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-08-27 21:47:10,699 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-27 21:47:10,723 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-27 21:47:10,726 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-27 21:47:10,728 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-27 21:47:10,728 INFO L275 PluginConnector]: CDTParser initialized [2020-08-27 21:47:10,729 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1092a.c [2020-08-27 21:47:10,805 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f8cf09f8a/df54c174bde3413c9c599daf08f14e38/FLAG71643740f [2020-08-27 21:47:11,350 INFO L306 CDTParser]: Found 1 translation units. [2020-08-27 21:47:11,351 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1092a.c [2020-08-27 21:47:11,361 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f8cf09f8a/df54c174bde3413c9c599daf08f14e38/FLAG71643740f [2020-08-27 21:47:11,660 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f8cf09f8a/df54c174bde3413c9c599daf08f14e38 [2020-08-27 21:47:11,674 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-27 21:47:11,676 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-27 21:47:11,677 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-27 21:47:11,677 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-27 21:47:11,682 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-27 21:47:11,683 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:47:11" (1/1) ... [2020-08-27 21:47:11,687 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c46e88b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:47:11, skipping insertion in model container [2020-08-27 21:47:11,688 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:47:11" (1/1) ... [2020-08-27 21:47:11,697 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-27 21:47:11,726 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-27 21:47:11,990 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-27 21:47:11,995 INFO L203 MainTranslator]: Completed pre-run [2020-08-27 21:47:12,033 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-27 21:47:12,062 INFO L208 MainTranslator]: Completed translation [2020-08-27 21:47:12,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:47:12 WrapperNode [2020-08-27 21:47:12,063 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-27 21:47:12,064 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-27 21:47:12,064 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-27 21:47:12,064 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-27 21:47:12,158 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:47:12" (1/1) ... [2020-08-27 21:47:12,158 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:47:12" (1/1) ... [2020-08-27 21:47:12,170 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:47:12" (1/1) ... [2020-08-27 21:47:12,170 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:47:12" (1/1) ... [2020-08-27 21:47:12,183 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:47:12" (1/1) ... [2020-08-27 21:47:12,190 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:47:12" (1/1) ... [2020-08-27 21:47:12,193 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:47:12" (1/1) ... [2020-08-27 21:47:12,196 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-27 21:47:12,197 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-27 21:47:12,197 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-27 21:47:12,197 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-27 21:47:12,198 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:47:12" (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 [2020-08-27 21:47:12,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-27 21:47:12,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-27 21:47:12,271 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-27 21:47:12,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_double [2020-08-27 21:47:12,272 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-27 21:47:12,272 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-27 21:47:12,272 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-27 21:47:12,273 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_double [2020-08-27 21:47:12,273 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-27 21:47:12,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-27 21:47:12,273 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-27 21:47:12,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-27 21:47:12,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-27 21:47:12,274 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-27 21:47:12,274 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-27 21:47:12,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-27 21:47:12,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-27 21:47:12,701 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-27 21:47:12,701 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-27 21:47:12,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:47:12 BoogieIcfgContainer [2020-08-27 21:47:12,706 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-27 21:47:12,708 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-27 21:47:12,708 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-27 21:47:12,711 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-27 21:47:12,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 09:47:11" (1/3) ... [2020-08-27 21:47:12,713 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@451a7115 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:47:12, skipping insertion in model container [2020-08-27 21:47:12,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:47:12" (2/3) ... [2020-08-27 21:47:12,713 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@451a7115 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:47:12, skipping insertion in model container [2020-08-27 21:47:12,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:47:12" (3/3) ... [2020-08-27 21:47:12,716 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1092a.c [2020-08-27 21:47:12,729 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-27 21:47:12,740 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-27 21:47:12,760 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-27 21:47:12,785 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-27 21:47:12,785 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-27 21:47:12,785 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-27 21:47:12,785 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-27 21:47:12,785 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-27 21:47:12,785 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-27 21:47:12,786 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-27 21:47:12,786 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-27 21:47:12,808 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-08-27 21:47:12,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-27 21:47:12,815 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:47:12,816 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:47:12,817 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:47:12,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:47:12,823 INFO L82 PathProgramCache]: Analyzing trace with hash -321966810, now seen corresponding path program 1 times [2020-08-27 21:47:12,832 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:47:12,832 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [104770192] [2020-08-27 21:47:12,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:47:12,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:47:13,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:47:13,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:47:13,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:47:13,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:47:13,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:47:13,089 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [104770192] [2020-08-27 21:47:13,092 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:47:13,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-27 21:47:13,093 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846467414] [2020-08-27 21:47:13,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-27 21:47:13,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:47:13,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-27 21:47:13,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-27 21:47:13,121 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 4 states. [2020-08-27 21:47:13,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:47:13,372 INFO L93 Difference]: Finished difference Result 76 states and 114 transitions. [2020-08-27 21:47:13,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-27 21:47:13,374 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-08-27 21:47:13,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:47:13,389 INFO L225 Difference]: With dead ends: 76 [2020-08-27 21:47:13,390 INFO L226 Difference]: Without dead ends: 38 [2020-08-27 21:47:13,394 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-27 21:47:13,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-08-27 21:47:13,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-08-27 21:47:13,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-08-27 21:47:13,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 52 transitions. [2020-08-27 21:47:13,442 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 52 transitions. Word has length 18 [2020-08-27 21:47:13,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:47:13,443 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 52 transitions. [2020-08-27 21:47:13,443 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-27 21:47:13,443 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 52 transitions. [2020-08-27 21:47:13,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-27 21:47:13,444 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:47:13,444 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:47:13,445 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-27 21:47:13,445 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:47:13,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:47:13,445 INFO L82 PathProgramCache]: Analyzing trace with hash 422703747, now seen corresponding path program 1 times [2020-08-27 21:47:13,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:47:13,446 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [988295401] [2020-08-27 21:47:13,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:47:13,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-27 21:47:13,517 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-27 21:47:13,517 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-27 21:47:13,523 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-27 21:47:13,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 09:47:13 BoogieIcfgContainer [2020-08-27 21:47:13,542 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-27 21:47:13,547 INFO L168 Benchmark]: Toolchain (without parser) took 1868.42 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 103.4 MB in the beginning and 112.9 MB in the end (delta: -9.5 MB). Peak memory consumption was 52.9 MB. Max. memory is 7.1 GB. [2020-08-27 21:47:13,563 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-27 21:47:13,564 INFO L168 Benchmark]: CACSL2BoogieTranslator took 386.67 ms. Allocated memory is still 140.5 MB. Free memory was 103.2 MB in the beginning and 91.7 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. [2020-08-27 21:47:13,565 INFO L168 Benchmark]: Boogie Preprocessor took 132.30 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 91.7 MB in the beginning and 180.2 MB in the end (delta: -88.5 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. [2020-08-27 21:47:13,566 INFO L168 Benchmark]: RCFGBuilder took 509.83 ms. Allocated memory is still 202.9 MB. Free memory was 179.6 MB in the beginning and 158.0 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. [2020-08-27 21:47:13,567 INFO L168 Benchmark]: TraceAbstraction took 834.51 ms. Allocated memory is still 202.9 MB. Free memory was 157.3 MB in the beginning and 112.9 MB in the end (delta: 44.4 MB). Peak memory consumption was 44.4 MB. Max. memory is 7.1 GB. [2020-08-27 21:47:13,572 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 386.67 ms. Allocated memory is still 140.5 MB. Free memory was 103.2 MB in the beginning and 91.7 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 132.30 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 91.7 MB in the beginning and 180.2 MB in the end (delta: -88.5 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 509.83 ms. Allocated memory is still 202.9 MB. Free memory was 179.6 MB in the beginning and 158.0 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 834.51 ms. Allocated memory is still 202.9 MB. Free memory was 157.3 MB in the beginning and 112.9 MB in the end (delta: 44.4 MB). Peak memory consumption was 44.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 96]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftRight at line 41, overapproximation of bitwiseOr at line 42, overapproximation of someUnaryDOUBLEoperation at line 91, overapproximation of bitwiseAnd at line 28, overapproximation of someBinaryDOUBLEComparisonOperation at line 95. Possible FailurePath: [L17] static const double huge_ceil = 1.0e300; [L91] double x = -0.0; [L92] CALL, EXPR ceil_double(x) [L20] __int32_t i0, i1, j0; [L21] __uint32_t i, j; [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (i0) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (i1) = ew_u.parts.lsw [L28] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff [L29] COND TRUE j0 < 20 [L30] COND FALSE !(j0 < 0) [L41] i = (0x000fffff) >> j0 [L42] COND TRUE ((i0 & i) | i1) == 0 [L43] return x; [L92] RET, EXPR ceil_double(x) [L92] double res = ceil_double(x); [L95] COND TRUE res != x [L96] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 45 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 52 SDtfs, 47 SDslu, 5 SDs, 0 SdLazy, 55 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 697 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...