/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/double_req_bl_1131b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 21:49:46,914 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 21:49:46,917 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 21:49:46,957 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 21:49:46,957 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 21:49:46,965 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 21:49:46,968 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 21:49:46,972 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 21:49:46,975 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 21:49:46,978 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 21:49:46,979 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 21:49:46,980 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 21:49:46,980 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 21:49:46,983 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 21:49:46,985 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 21:49:46,987 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 21:49:46,988 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 21:49:46,989 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 21:49:46,991 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 21:49:47,000 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 21:49:47,003 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 21:49:47,003 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 21:49:47,004 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 21:49:47,005 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 21:49:47,010 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 21:49:47,022 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 21:49:47,023 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 21:49:47,024 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 21:49:47,024 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 21:49:47,034 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 21:49:47,034 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 21:49:47,035 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 21:49:47,035 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 21:49:47,036 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 21:49:47,036 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 21:49:47,036 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 21:49:47,036 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 21:49:47,036 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 21:49:47,036 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 21:49:47,037 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 21:49:47,037 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 21:49:47,037 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 21:49:47,037 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 21:49:47,037 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 21:49:47,038 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 21:49:47,038 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 21:49:47,038 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 21:49:47,038 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 21:49:47,038 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 21:49:47,039 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 21:49:47,039 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 21:49:47,039 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 [2020-08-22 21:49:47,328 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 21:49:47,348 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 21:49:47,352 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 21:49:47,354 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 21:49:47,355 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 21:49:47,355 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c [2020-08-22 21:49:47,429 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9e61e347/77eb5d532f354d0fa305f82f8cbf51a4/FLAG8d5d4e208 [2020-08-22 21:49:47,905 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 21:49:47,906 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c [2020-08-22 21:49:47,912 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9e61e347/77eb5d532f354d0fa305f82f8cbf51a4/FLAG8d5d4e208 [2020-08-22 21:49:48,225 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9e61e347/77eb5d532f354d0fa305f82f8cbf51a4 [2020-08-22 21:49:48,236 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 21:49:48,238 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 21:49:48,241 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 21:49:48,241 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 21:49:48,245 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 21:49:48,246 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 09:49:48" (1/1) ... [2020-08-22 21:49:48,249 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d1f124a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:49:48, skipping insertion in model container [2020-08-22 21:49:48,249 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 09:49:48" (1/1) ... [2020-08-22 21:49:48,258 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 21:49:48,285 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 21:49:48,514 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 21:49:48,520 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 21:49:48,657 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 21:49:48,684 INFO L208 MainTranslator]: Completed translation [2020-08-22 21:49:48,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:49:48 WrapperNode [2020-08-22 21:49:48,684 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 21:49:48,685 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 21:49:48,685 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 21:49:48,685 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 21:49:48,697 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:49:48" (1/1) ... [2020-08-22 21:49:48,697 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:49:48" (1/1) ... [2020-08-22 21:49:48,709 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:49:48" (1/1) ... [2020-08-22 21:49:48,710 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:49:48" (1/1) ... [2020-08-22 21:49:48,728 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:49:48" (1/1) ... [2020-08-22 21:49:48,738 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:49:48" (1/1) ... [2020-08-22 21:49:48,742 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:49:48" (1/1) ... [2020-08-22 21:49:48,747 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 21:49:48,747 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 21:49:48,747 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 21:49:48,748 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 21:49:48,748 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:49:48" (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 [2020-08-22 21:49:48,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 21:49:48,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 21:49:48,808 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-08-22 21:49:48,808 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2020-08-22 21:49:48,808 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 21:49:48,809 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 21:49:48,809 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-08-22 21:49:48,809 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-08-22 21:49:48,809 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 21:49:48,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-22 21:49:48,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 21:49:48,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 21:49:48,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-22 21:49:48,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 21:49:48,810 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2020-08-22 21:49:48,810 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 21:49:48,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 21:49:48,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-08-22 21:49:48,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 21:49:49,446 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 21:49:49,447 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-08-22 21:49:49,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 09:49:49 BoogieIcfgContainer [2020-08-22 21:49:49,454 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 21:49:49,456 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 21:49:49,456 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 21:49:49,459 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 21:49:49,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 09:49:48" (1/3) ... [2020-08-22 21:49:49,460 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1db5054b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 09:49:49, skipping insertion in model container [2020-08-22 21:49:49,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:49:48" (2/3) ... [2020-08-22 21:49:49,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1db5054b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 09:49:49, skipping insertion in model container [2020-08-22 21:49:49,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 09:49:49" (3/3) ... [2020-08-22 21:49:49,463 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131b.c [2020-08-22 21:49:49,474 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 21:49:49,483 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 21:49:49,498 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 21:49:49,522 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 21:49:49,522 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 21:49:49,522 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 21:49:49,522 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 21:49:49,523 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 21:49:49,523 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 21:49:49,523 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 21:49:49,523 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 21:49:49,545 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2020-08-22 21:49:49,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-22 21:49:49,559 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 21:49:49,560 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] [2020-08-22 21:49:49,561 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 21:49:49,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 21:49:49,567 INFO L82 PathProgramCache]: Analyzing trace with hash -1577177176, now seen corresponding path program 1 times [2020-08-22 21:49:49,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 21:49:49,577 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [896681943] [2020-08-22 21:49:49,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 21:49:49,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:49:49,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 21:49:49,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:49:49,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 21:49:49,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:49:49,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-08-22 21:49:49,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:49:49,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 21:49:49,873 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [896681943] [2020-08-22 21:49:49,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 21:49:49,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 21:49:49,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372381365] [2020-08-22 21:49:49,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 21:49:49,884 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 21:49:49,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 21:49:49,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 21:49:49,902 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 4 states. [2020-08-22 21:49:50,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 21:49:50,423 INFO L93 Difference]: Finished difference Result 414 states and 503 transitions. [2020-08-22 21:49:50,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 21:49:50,425 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-22 21:49:50,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 21:49:50,440 INFO L225 Difference]: With dead ends: 414 [2020-08-22 21:49:50,440 INFO L226 Difference]: Without dead ends: 209 [2020-08-22 21:49:50,447 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 [2020-08-22 21:49:50,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-08-22 21:49:50,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2020-08-22 21:49:50,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-08-22 21:49:50,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 235 transitions. [2020-08-22 21:49:50,515 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 235 transitions. Word has length 51 [2020-08-22 21:49:50,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 21:49:50,515 INFO L479 AbstractCegarLoop]: Abstraction has 209 states and 235 transitions. [2020-08-22 21:49:50,516 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 21:49:50,516 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 235 transitions. [2020-08-22 21:49:50,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-22 21:49:50,519 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 21:49:50,520 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2020-08-22 21:49:50,520 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 21:49:50,520 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 21:49:50,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 21:49:50,521 INFO L82 PathProgramCache]: Analyzing trace with hash -16125544, now seen corresponding path program 1 times [2020-08-22 21:49:50,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 21:49:50,522 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [231460207] [2020-08-22 21:49:50,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 21:49:50,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 21:49:50,637 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 21:49:50,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 21:49:50,773 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 21:49:50,839 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 21:49:50,839 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 21:49:50,847 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 21:49:50,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 09:49:50 BoogieIcfgContainer [2020-08-22 21:49:50,938 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 21:49:50,941 INFO L168 Benchmark]: Toolchain (without parser) took 2701.94 ms. Allocated memory was 137.4 MB in the beginning and 231.7 MB in the end (delta: 94.4 MB). Free memory was 101.5 MB in the beginning and 131.7 MB in the end (delta: -30.3 MB). Peak memory consumption was 64.1 MB. Max. memory is 7.1 GB. [2020-08-22 21:49:50,942 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 137.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-08-22 21:49:50,943 INFO L168 Benchmark]: CACSL2BoogieTranslator took 443.57 ms. Allocated memory was 137.4 MB in the beginning and 201.3 MB in the end (delta: 64.0 MB). Free memory was 101.0 MB in the beginning and 176.4 MB in the end (delta: -75.4 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. [2020-08-22 21:49:50,943 INFO L168 Benchmark]: Boogie Preprocessor took 61.97 ms. Allocated memory is still 201.3 MB. Free memory was 176.4 MB in the beginning and 173.6 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-08-22 21:49:50,944 INFO L168 Benchmark]: RCFGBuilder took 706.94 ms. Allocated memory is still 201.3 MB. Free memory was 173.6 MB in the beginning and 126.4 MB in the end (delta: 47.2 MB). Peak memory consumption was 47.2 MB. Max. memory is 7.1 GB. [2020-08-22 21:49:50,945 INFO L168 Benchmark]: TraceAbstraction took 1482.24 ms. Allocated memory was 201.3 MB in the beginning and 231.7 MB in the end (delta: 30.4 MB). Free memory was 126.4 MB in the beginning and 131.7 MB in the end (delta: -5.3 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. [2020-08-22 21:49:50,949 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 137.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 443.57 ms. Allocated memory was 137.4 MB in the beginning and 201.3 MB in the end (delta: 64.0 MB). Free memory was 101.0 MB in the beginning and 176.4 MB in the end (delta: -75.4 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 61.97 ms. Allocated memory is still 201.3 MB. Free memory was 176.4 MB in the beginning and 173.6 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 706.94 ms. Allocated memory is still 201.3 MB. Free memory was 173.6 MB in the beginning and 126.4 MB in the end (delta: 47.2 MB). Peak memory consumption was 47.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1482.24 ms. Allocated memory was 201.3 MB in the beginning and 231.7 MB in the end (delta: 30.4 MB). Free memory was 126.4 MB in the beginning and 131.7 MB in the end (delta: -5.3 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 186]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 41, overapproximation of someUnaryDOUBLEoperation at line 17, overapproximation of someBinaryArithmeticDOUBLEoperation at line 42, overapproximation of bitwiseAnd at line 38, overapproximation of someBinaryDOUBLEComparisonOperation at line 185, overapproximation of bitwiseXor at line 37. Possible FailurePath: [L15-L18] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [\old(one_fmod)=9223372032558759954, \old(Zero_fmod)=9223372032558759951, \old(Zero_fmod)=9223372032558759941, one_fmod=1, Zero_fmod={3:0}] [L177] double y = -1.0 / 0.0; VAL [one_fmod=1, Zero_fmod={3:0}] [L178] double x = __VERIFIER_nondet_double(); VAL [__VERIFIER_nondet_double()=9223372032558759946, one_fmod=1, x=9223372032558759946, Zero_fmod={3:0}] [L180] CALL isfinite_double(x) VAL [\old(x)=9223372032558759946, one_fmod=1, Zero_fmod={3:0}] [L161] __int32_t hx; VAL [\old(x)=9223372032558759946, one_fmod=1, x=9223372032558759946, Zero_fmod={3:0}] [L163] ieee_double_shape_type gh_u; VAL [\old(x)=9223372032558759946, gh_u={5:0}, one_fmod=1, x=9223372032558759946, Zero_fmod={3:0}] [L164] gh_u.value = (x) VAL [\old(x)=9223372032558759946, gh_u={5:0}, one_fmod=1, x=9223372032558759946, Zero_fmod={3:0}] [L165] EXPR gh_u.parts.msw VAL [\old(x)=9223372032558759946, gh_u={5:0}, gh_u.parts.msw=8589934590, one_fmod=1, x=9223372032558759946, Zero_fmod={3:0}] [L165] (hx) = gh_u.parts.msw VAL [(hx) = gh_u.parts.msw=9223372032558759940, \old(x)=9223372032558759946, gh_u={5:0}, gh_u.parts.msw=8589934590, hx=-2, one_fmod=1, x=9223372032558759946, Zero_fmod={3:0}] [L167] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); VAL [\old(x)=9223372032558759946, \result=6, hx=-2, one_fmod=1, x=9223372032558759946, Zero_fmod={3:0}] [L180] RET isfinite_double(x) VAL [isfinite_double(x)=6, one_fmod=1, x=9223372032558759946, Zero_fmod={3:0}] [L180] COND TRUE isfinite_double(x) VAL [isfinite_double(x)=6, one_fmod=1, x=9223372032558759946, Zero_fmod={3:0}] [L182] CALL, EXPR fmod_double(x, y) VAL [\old(x)=9223372032558759946, \old(y)=9223372032558759947, one_fmod=1, Zero_fmod={3:0}] [L21] __int32_t n, hx, hy, hz, ix, iy, sx, i; VAL [\old(x)=9223372032558759946, \old(y)=9223372032558759947, one_fmod=1, x=9223372032558759946, y=9223372032558759947, Zero_fmod={3:0}] [L22] __uint32_t lx, ly, lz; VAL [\old(x)=9223372032558759946, \old(y)=9223372032558759947, one_fmod=1, x=9223372032558759946, y=9223372032558759947, Zero_fmod={3:0}] [L25] ieee_double_shape_type ew_u; VAL [\old(x)=9223372032558759946, \old(y)=9223372032558759947, ew_u={7:0}, one_fmod=1, x=9223372032558759946, y=9223372032558759947, Zero_fmod={3:0}] [L26] ew_u.value = (x) VAL [\old(x)=9223372032558759946, \old(y)=9223372032558759947, ew_u={7:0}, one_fmod=1, x=9223372032558759946, y=9223372032558759947, Zero_fmod={3:0}] [L27] EXPR ew_u.parts.msw VAL [\old(x)=9223372032558759946, \old(y)=9223372032558759947, ew_u={7:0}, ew_u.parts.msw=4294967292, one_fmod=1, x=9223372032558759946, y=9223372032558759947, Zero_fmod={3:0}] [L27] (hx) = ew_u.parts.msw VAL [(hx) = ew_u.parts.msw=9223372032558759945, \old(x)=9223372032558759946, \old(y)=9223372032558759947, ew_u={7:0}, ew_u.parts.msw=4294967292, hx=-4, one_fmod=1, x=9223372032558759946, y=9223372032558759947, Zero_fmod={3:0}] [L28] EXPR ew_u.parts.lsw VAL [\old(x)=9223372032558759946, \old(y)=9223372032558759947, ew_u={7:0}, ew_u.parts.lsw=9223372032558759957, hx=-4, one_fmod=1, x=9223372032558759946, y=9223372032558759947, Zero_fmod={3:0}] [L28] (lx) = ew_u.parts.lsw VAL [\old(x)=9223372032558759946, \old(y)=9223372032558759947, ew_u={7:0}, ew_u.parts.lsw=9223372032558759957, hx=-4, lx=9223372032558759957, one_fmod=1, x=9223372032558759946, y=9223372032558759947, Zero_fmod={3:0}] [L31] ieee_double_shape_type ew_u; VAL [\old(x)=9223372032558759946, \old(y)=9223372032558759947, ew_u={2:0}, hx=-4, lx=9223372032558759957, one_fmod=1, x=9223372032558759946, y=9223372032558759947, Zero_fmod={3:0}] [L32] ew_u.value = (y) VAL [\old(x)=9223372032558759946, \old(y)=9223372032558759947, ew_u={2:0}, hx=-4, lx=9223372032558759957, one_fmod=1, x=9223372032558759946, y=9223372032558759947, Zero_fmod={3:0}] [L33] EXPR ew_u.parts.msw VAL [\old(x)=9223372032558759946, \old(y)=9223372032558759947, ew_u={2:0}, ew_u.parts.msw=0, hx=-4, lx=9223372032558759957, one_fmod=1, x=9223372032558759946, y=9223372032558759947, Zero_fmod={3:0}] [L33] (hy) = ew_u.parts.msw VAL [(hy) = ew_u.parts.msw=9223372032558759956, \old(x)=9223372032558759946, \old(y)=9223372032558759947, ew_u={2:0}, ew_u.parts.msw=0, hx=-4, hy=0, lx=9223372032558759957, one_fmod=1, x=9223372032558759946, y=9223372032558759947, Zero_fmod={3:0}] [L34] EXPR ew_u.parts.lsw VAL [\old(x)=9223372032558759946, \old(y)=9223372032558759947, ew_u={2:0}, ew_u.parts.lsw=9223372032558759948, hx=-4, hy=0, lx=9223372032558759957, one_fmod=1, x=9223372032558759946, y=9223372032558759947, Zero_fmod={3:0}] [L34] (ly) = ew_u.parts.lsw VAL [(ly) = ew_u.parts.lsw=9223372032558759944, \old(x)=9223372032558759946, \old(y)=9223372032558759947, ew_u={2:0}, ew_u.parts.lsw=9223372032558759948, hx=-4, hy=0, lx=9223372032558759957, ly=9223372032558759948, one_fmod=1, x=9223372032558759946, y=9223372032558759947, Zero_fmod={3:0}] [L36] sx = hx & 0x80000000 VAL [\old(x)=9223372032558759946, \old(y)=9223372032558759947, hx=-4, hy=0, lx=9223372032558759957, ly=9223372032558759948, one_fmod=1, sx=-1, x=9223372032558759946, y=9223372032558759947, Zero_fmod={3:0}] [L37] hx ^= sx VAL [\old(x)=9223372032558759946, \old(y)=9223372032558759947, hy=0, lx=9223372032558759957, ly=9223372032558759948, one_fmod=1, sx=-1, x=9223372032558759946, y=9223372032558759947, Zero_fmod={3:0}] [L38] hy &= 0x7fffffff VAL [\old(x)=9223372032558759946, \old(y)=9223372032558759947, lx=9223372032558759957, ly=9223372032558759948, one_fmod=1, sx=-1, x=9223372032558759946, y=9223372032558759947, Zero_fmod={3:0}] [L40-L41] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) VAL [\old(x)=9223372032558759946, \old(y)=9223372032558759947, hx=2146435072, lx=9223372032558759957, ly=9223372032558759948, one_fmod=1, sx=-1, x=9223372032558759946, y=9223372032558759947, Zero_fmod={3:0}] [L42] return (x * y) / (x * y); VAL [\old(x)=9223372032558759946, \old(y)=9223372032558759947, hx=2146435072, lx=9223372032558759957, ly=9223372032558759948, one_fmod=1, sx=-1, x=9223372032558759946, y=9223372032558759947, Zero_fmod={3:0}] [L182] RET, EXPR fmod_double(x, y) VAL [fmod_double(x, y)=9223372032558759943, one_fmod=1, x=9223372032558759946, y=9223372032558759947, Zero_fmod={3:0}] [L182] double res = fmod_double(x, y); VAL [fmod_double(x, y)=9223372032558759943, one_fmod=1, res=9223372032558759943, x=9223372032558759946, y=9223372032558759947, Zero_fmod={3:0}] [L185] COND TRUE res != x VAL [one_fmod=1, res=9223372032558759943, x=9223372032558759946, y=9223372032558759947, Zero_fmod={3:0}] [L186] __VERIFIER_error() VAL [one_fmod=1, res=9223372032558759943, x=9223372032558759946, y=9223372032558759947, Zero_fmod={3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 216 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 239 SDtfs, 37 SDslu, 182 SDs, 0 SdLazy, 260 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=216occurred 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, 139 NumberOfCodeBlocks, 139 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 50 ConstructedInterpolants, 0 QuantifiedInterpolants, 4750 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...