/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_1051.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 10:16:38,123 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 10:16:38,127 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 10:16:38,176 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 10:16:38,176 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 10:16:38,185 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 10:16:38,189 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 10:16:38,195 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 10:16:38,197 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 10:16:38,201 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 10:16:38,202 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 10:16:38,203 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 10:16:38,203 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 10:16:38,207 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 10:16:38,210 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 10:16:38,212 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 10:16:38,214 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 10:16:38,215 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 10:16:38,217 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 10:16:38,227 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 10:16:38,230 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 10:16:38,231 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 10:16:38,232 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 10:16:38,233 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 10:16:38,246 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-21 10:16:38,265 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 10:16:38,266 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 10:16:38,267 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 10:16:38,268 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 [2020-09-21 10:16:38,315 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 10:16:38,315 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 10:16:38,317 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 10:16:38,317 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 10:16:38,317 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 10:16:38,318 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 10:16:38,318 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 10:16:38,318 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 10:16:38,318 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 10:16:38,319 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 10:16:38,320 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 10:16:38,320 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 10:16:38,320 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 10:16:38,321 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 10:16:38,321 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 10:16:38,321 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 10:16:38,321 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 10:16:38,322 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 10:16:38,322 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 10:16:38,322 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 10:16:38,322 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 10:16:38,322 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 10:16:38,323 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 10:16:38,323 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 10:16:38,323 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 10:16:38,323 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 10:16:38,323 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 10:16:38,324 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 10:16:38,324 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 10:16:38,324 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 [2020-09-21 10:16:38,774 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 10:16:38,802 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 10:16:38,807 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 10:16:38,809 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 10:16:38,810 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 10:16:38,811 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1051.c [2020-09-21 10:16:38,905 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e79984d9b/b9bac14b90954401a456b932549c3c33/FLAG51eb78700 [2020-09-21 10:16:39,481 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 10:16:39,482 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1051.c [2020-09-21 10:16:39,490 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e79984d9b/b9bac14b90954401a456b932549c3c33/FLAG51eb78700 [2020-09-21 10:16:39,792 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e79984d9b/b9bac14b90954401a456b932549c3c33 [2020-09-21 10:16:39,807 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 10:16:39,813 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 10:16:39,814 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 10:16:39,814 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 10:16:39,819 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 10:16:39,820 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:16:39" (1/1) ... [2020-09-21 10:16:39,825 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b481d0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:39, skipping insertion in model container [2020-09-21 10:16:39,826 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:16:39" (1/1) ... [2020-09-21 10:16:39,833 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 10:16:39,860 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 10:16:40,103 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:16:40,109 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 10:16:40,149 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:16:40,269 INFO L208 MainTranslator]: Completed translation [2020-09-21 10:16:40,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:40 WrapperNode [2020-09-21 10:16:40,270 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 10:16:40,271 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 10:16:40,271 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 10:16:40,271 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 10:16:40,290 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:40" (1/1) ... [2020-09-21 10:16:40,290 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:40" (1/1) ... [2020-09-21 10:16:40,303 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:40" (1/1) ... [2020-09-21 10:16:40,303 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:40" (1/1) ... [2020-09-21 10:16:40,326 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:40" (1/1) ... [2020-09-21 10:16:40,336 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:40" (1/1) ... [2020-09-21 10:16:40,338 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:40" (1/1) ... [2020-09-21 10:16:40,342 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 10:16:40,342 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 10:16:40,343 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 10:16:40,343 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 10:16:40,344 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:40" (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 [2020-09-21 10:16:40,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 10:16:40,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 10:16:40,422 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_double [2020-09-21 10:16:40,422 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-09-21 10:16:40,423 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 10:16:40,423 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 10:16:40,423 INFO L130 BoogieDeclarations]: Found specification of procedure floor_double [2020-09-21 10:16:40,423 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 10:16:40,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-21 10:16:40,424 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 10:16:40,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 10:16:40,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 10:16:40,424 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-21 10:16:40,424 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-09-21 10:16:40,425 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 10:16:40,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 10:16:40,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 10:16:40,806 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 10:16:40,807 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-21 10:16:40,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:16:40 BoogieIcfgContainer [2020-09-21 10:16:40,812 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 10:16:40,813 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 10:16:40,815 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 10:16:40,819 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 10:16:40,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 10:16:39" (1/3) ... [2020-09-21 10:16:40,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b395dd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:16:40, skipping insertion in model container [2020-09-21 10:16:40,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:40" (2/3) ... [2020-09-21 10:16:40,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b395dd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:16:40, skipping insertion in model container [2020-09-21 10:16:40,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:16:40" (3/3) ... [2020-09-21 10:16:40,823 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1051.c [2020-09-21 10:16:40,835 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 10:16:40,845 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 10:16:40,867 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 10:16:40,905 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 10:16:40,905 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 10:16:40,906 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 10:16:40,906 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 10:16:40,906 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 10:16:40,906 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 10:16:40,906 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 10:16:40,906 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 10:16:40,927 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2020-09-21 10:16:40,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-21 10:16:40,934 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:16:40,935 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] [2020-09-21 10:16:40,935 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:16:40,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:16:40,941 INFO L82 PathProgramCache]: Analyzing trace with hash 1635654302, now seen corresponding path program 1 times [2020-09-21 10:16:40,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:16:40,950 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [259921236] [2020-09-21 10:16:40,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:16:41,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:16:41,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:16:41,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:16:41,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:16:41,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:16:41,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:16:41,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:16:41,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:16:41,237 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [259921236] [2020-09-21 10:16:41,239 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:16:41,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 10:16:41,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767717768] [2020-09-21 10:16:41,249 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 10:16:41,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:16:41,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 10:16:41,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 10:16:41,267 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 4 states. [2020-09-21 10:16:41,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:16:41,550 INFO L93 Difference]: Finished difference Result 86 states and 124 transitions. [2020-09-21 10:16:41,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 10:16:41,553 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-09-21 10:16:41,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:16:41,568 INFO L225 Difference]: With dead ends: 86 [2020-09-21 10:16:41,569 INFO L226 Difference]: Without dead ends: 43 [2020-09-21 10:16:41,574 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 10:16:41,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-09-21 10:16:41,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-09-21 10:16:41,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-09-21 10:16:41,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 57 transitions. [2020-09-21 10:16:41,631 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 57 transitions. Word has length 23 [2020-09-21 10:16:41,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:16:41,631 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 57 transitions. [2020-09-21 10:16:41,632 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 10:16:41,632 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 57 transitions. [2020-09-21 10:16:41,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-21 10:16:41,633 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:16:41,634 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] [2020-09-21 10:16:41,634 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 10:16:41,634 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:16:41,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:16:41,635 INFO L82 PathProgramCache]: Analyzing trace with hash 744784661, now seen corresponding path program 1 times [2020-09-21 10:16:41,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:16:41,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [593251896] [2020-09-21 10:16:41,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:16:41,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 10:16:41,724 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 10:16:41,724 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 10:16:41,730 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 10:16:41,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 10:16:41 BoogieIcfgContainer [2020-09-21 10:16:41,751 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 10:16:41,755 INFO L168 Benchmark]: Toolchain (without parser) took 1944.50 ms. Allocated memory was 141.0 MB in the beginning and 205.0 MB in the end (delta: 64.0 MB). Free memory was 103.8 MB in the beginning and 111.1 MB in the end (delta: -7.3 MB). Peak memory consumption was 56.7 MB. Max. memory is 7.1 GB. [2020-09-21 10:16:41,756 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-21 10:16:41,758 INFO L168 Benchmark]: CACSL2BoogieTranslator took 456.38 ms. Allocated memory was 141.0 MB in the beginning and 205.0 MB in the end (delta: 64.0 MB). Free memory was 103.1 MB in the beginning and 183.3 MB in the end (delta: -80.2 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. [2020-09-21 10:16:41,759 INFO L168 Benchmark]: Boogie Preprocessor took 71.00 ms. Allocated memory is still 205.0 MB. Free memory was 183.3 MB in the beginning and 181.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-09-21 10:16:41,759 INFO L168 Benchmark]: RCFGBuilder took 469.47 ms. Allocated memory is still 205.0 MB. Free memory was 181.0 MB in the beginning and 159.2 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. [2020-09-21 10:16:41,760 INFO L168 Benchmark]: TraceAbstraction took 938.20 ms. Allocated memory is still 205.0 MB. Free memory was 158.6 MB in the beginning and 111.1 MB in the end (delta: 47.5 MB). Peak memory consumption was 47.5 MB. Max. memory is 7.1 GB. [2020-09-21 10:16:41,765 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 141.0 MB. Free memory was 122.6 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 456.38 ms. Allocated memory was 141.0 MB in the beginning and 205.0 MB in the end (delta: 64.0 MB). Free memory was 103.1 MB in the beginning and 183.3 MB in the end (delta: -80.2 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 71.00 ms. Allocated memory is still 205.0 MB. Free memory was 183.3 MB in the beginning and 181.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 469.47 ms. Allocated memory is still 205.0 MB. Free memory was 181.0 MB in the beginning and 159.2 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 938.20 ms. Allocated memory is still 205.0 MB. Free memory was 158.6 MB in the beginning and 111.1 MB in the end (delta: 47.5 MB). Peak memory consumption was 47.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 93]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftRight at line 37, overapproximation of bitwiseOr at line 38, overapproximation of someBinaryArithmeticDOUBLEoperation at line 88, overapproximation of bitwiseAnd at line 25, overapproximation of someBinaryDOUBLEComparisonOperation at line 80. Possible FailurePath: [L14] static const double huge_floor = 1.0e300; [L88] double x = 0.0 / 0.0; [L89] CALL, EXPR floor_double(x) [L17] __int32_t i0, i1, j0; [L18] __uint32_t i, j; [L20] ieee_double_shape_type ew_u; [L21] ew_u.value = (x) [L22] EXPR ew_u.parts.msw [L22] (i0) = ew_u.parts.msw [L23] EXPR ew_u.parts.lsw [L23] (i1) = ew_u.parts.lsw [L25] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff [L26] COND TRUE j0 < 20 [L27] COND FALSE !(j0 < 0) [L37] i = (0x000fffff) >> j0 [L38] COND TRUE ((i0 & i) | i1) == 0 [L39] return x; [L89] RET, EXPR floor_double(x) [L89] double res = floor_double(x); [L92] CALL, EXPR isnan_double(res) [L80] return x != x; [L92] RET, EXPR isnan_double(res) [L92] COND TRUE !isnan_double(res) [L93] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 47 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 56 SDtfs, 52 SDslu, 5 SDs, 0 SdLazy, 58 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred 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, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 1012 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...