/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 -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1032c.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 18:31:00,513 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 18:31:00,516 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 18:31:00,552 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 18:31:00,552 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 18:31:00,559 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 18:31:00,562 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 18:31:00,566 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 18:31:00,568 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 18:31:00,571 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 18:31:00,572 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 18:31:00,573 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 18:31:00,573 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 18:31:00,575 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 18:31:00,577 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 18:31:00,579 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 18:31:00,580 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 18:31:00,582 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 18:31:00,583 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 18:31:00,591 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 18:31:00,593 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 18:31:00,594 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 18:31:00,595 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 18:31:00,596 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 18:31:00,607 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 18:31:00,624 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 18:31:00,625 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 18:31:00,626 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 18:31:00,627 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 18:31:00,641 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 18:31:00,642 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 18:31:00,644 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 18:31:00,644 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 18:31:00,644 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 18:31:00,644 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 18:31:00,645 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 18:31:00,645 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 18:31:00,645 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 18:31:00,645 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 18:31:00,646 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 18:31:00,646 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 18:31:00,646 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 18:31:00,647 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 18:31:00,647 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 18:31:00,647 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 18:31:00,647 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 18:31:00,648 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 18:31:00,648 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 18:31:00,648 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 18:31:00,648 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 18:31:00,648 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 18:31:00,649 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-08-22 18:31:00,948 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 18:31:00,960 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 18:31:00,963 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 18:31:00,965 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 18:31:00,965 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 18:31:00,966 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1032c.c [2020-08-22 18:31:01,028 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78a4bb2ac/6236fad77c4d486898a4b995ee1f4e4b/FLAG712ab1884 [2020-08-22 18:31:01,470 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 18:31:01,470 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1032c.c [2020-08-22 18:31:01,477 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78a4bb2ac/6236fad77c4d486898a4b995ee1f4e4b/FLAG712ab1884 [2020-08-22 18:31:01,846 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78a4bb2ac/6236fad77c4d486898a4b995ee1f4e4b [2020-08-22 18:31:01,855 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 18:31:01,857 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 18:31:01,858 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 18:31:01,858 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 18:31:01,861 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 18:31:01,862 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:31:01" (1/1) ... [2020-08-22 18:31:01,865 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18839cfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:01, skipping insertion in model container [2020-08-22 18:31:01,865 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:31:01" (1/1) ... [2020-08-22 18:31:01,873 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 18:31:01,899 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 18:31:02,083 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 18:31:02,086 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 18:31:02,119 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 18:31:02,137 INFO L208 MainTranslator]: Completed translation [2020-08-22 18:31:02,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:02 WrapperNode [2020-08-22 18:31:02,138 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 18:31:02,138 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 18:31:02,139 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 18:31:02,139 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 18:31:02,234 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:02" (1/1) ... [2020-08-22 18:31:02,234 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:02" (1/1) ... [2020-08-22 18:31:02,244 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:02" (1/1) ... [2020-08-22 18:31:02,244 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:02" (1/1) ... [2020-08-22 18:31:02,256 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:02" (1/1) ... [2020-08-22 18:31:02,263 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:02" (1/1) ... [2020-08-22 18:31:02,265 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:02" (1/1) ... [2020-08-22 18:31:02,267 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 18:31:02,268 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 18:31:02,268 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 18:31:02,268 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 18:31:02,269 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:02" (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 18:31:02,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 18:31:02,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 18:31:02,333 INFO L138 BoogieDeclarations]: Found implementation of procedure round_double [2020-08-22 18:31:02,333 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_double [2020-08-22 18:31:02,333 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 18:31:02,333 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 18:31:02,333 INFO L130 BoogieDeclarations]: Found specification of procedure round_double [2020-08-22 18:31:02,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 18:31:02,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-22 18:31:02,334 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 18:31:02,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 18:31:02,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 18:31:02,334 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-22 18:31:02,335 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_double [2020-08-22 18:31:02,335 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 18:31:02,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 18:31:02,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 18:31:02,748 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 18:31:02,749 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-08-22 18:31:02,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:31:02 BoogieIcfgContainer [2020-08-22 18:31:02,754 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 18:31:02,755 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 18:31:02,756 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 18:31:02,759 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 18:31:02,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 06:31:01" (1/3) ... [2020-08-22 18:31:02,760 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e067ff3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:31:02, skipping insertion in model container [2020-08-22 18:31:02,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:02" (2/3) ... [2020-08-22 18:31:02,760 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e067ff3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:31:02, skipping insertion in model container [2020-08-22 18:31:02,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:31:02" (3/3) ... [2020-08-22 18:31:02,762 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1032c.c [2020-08-22 18:31:02,772 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 18:31:02,779 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 18:31:02,793 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 18:31:02,815 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 18:31:02,815 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 18:31:02,816 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-08-22 18:31:02,816 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 18:31:02,816 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 18:31:02,817 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 18:31:02,817 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 18:31:02,817 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 18:31:02,835 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states. [2020-08-22 18:31:02,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-08-22 18:31:02,848 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:31:02,849 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] [2020-08-22 18:31:02,849 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:31:02,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:31:02,856 INFO L82 PathProgramCache]: Analyzing trace with hash 223530101, now seen corresponding path program 1 times [2020-08-22 18:31:02,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:31:02,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1883557790] [2020-08-22 18:31:02,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:31:02,936 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:31:02,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:31:03,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:31:03,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:31:03,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 18:31:03,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:31:03,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 18:31:03,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:31:03,141 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 18:31:03,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1883557790] [2020-08-22 18:31:03,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:31:03,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 18:31:03,147 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212865899] [2020-08-22 18:31:03,152 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 18:31:03,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:31:03,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 18:31:03,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 18:31:03,171 INFO L87 Difference]: Start difference. First operand 108 states. Second operand 4 states. [2020-08-22 18:31:03,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:31:03,544 INFO L93 Difference]: Finished difference Result 202 states and 231 transitions. [2020-08-22 18:31:03,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 18:31:03,548 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2020-08-22 18:31:03,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:31:03,558 INFO L225 Difference]: With dead ends: 202 [2020-08-22 18:31:03,558 INFO L226 Difference]: Without dead ends: 101 [2020-08-22 18:31:03,564 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 18:31:03,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-08-22 18:31:03,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2020-08-22 18:31:03,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-08-22 18:31:03,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 108 transitions. [2020-08-22 18:31:03,618 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 108 transitions. Word has length 38 [2020-08-22 18:31:03,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:31:03,618 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 108 transitions. [2020-08-22 18:31:03,619 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 18:31:03,619 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 108 transitions. [2020-08-22 18:31:03,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-08-22 18:31:03,622 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:31:03,622 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] [2020-08-22 18:31:03,623 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 18:31:03,623 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:31:03,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:31:03,624 INFO L82 PathProgramCache]: Analyzing trace with hash 32877217, now seen corresponding path program 1 times [2020-08-22 18:31:03,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:31:03,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1755097268] [2020-08-22 18:31:03,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:31:03,627 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:31:03,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 18:31:03,764 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 18:31:03,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 18:31:03,828 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 18:31:03,867 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 18:31:03,867 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 18:31:03,868 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 18:31:03,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 06:31:03 BoogieIcfgContainer [2020-08-22 18:31:03,891 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 18:31:03,897 INFO L168 Benchmark]: Toolchain (without parser) took 2035.54 ms. Allocated memory was 147.3 MB in the beginning and 235.9 MB in the end (delta: 88.6 MB). Free memory was 104.4 MB in the beginning and 196.6 MB in the end (delta: -92.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 18:31:03,898 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 147.3 MB. Free memory was 123.0 MB in the beginning and 122.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-22 18:31:03,899 INFO L168 Benchmark]: CACSL2BoogieTranslator took 280.26 ms. Allocated memory is still 147.3 MB. Free memory was 104.1 MB in the beginning and 92.6 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. [2020-08-22 18:31:03,903 INFO L168 Benchmark]: Boogie Preprocessor took 129.24 ms. Allocated memory was 147.3 MB in the beginning and 203.4 MB in the end (delta: 56.1 MB). Free memory was 92.6 MB in the beginning and 180.6 MB in the end (delta: -88.0 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-08-22 18:31:03,904 INFO L168 Benchmark]: RCFGBuilder took 486.35 ms. Allocated memory is still 203.4 MB. Free memory was 180.0 MB in the beginning and 152.7 MB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 7.1 GB. [2020-08-22 18:31:03,905 INFO L168 Benchmark]: TraceAbstraction took 1135.47 ms. Allocated memory was 203.4 MB in the beginning and 235.9 MB in the end (delta: 32.5 MB). Free memory was 152.0 MB in the beginning and 196.6 MB in the end (delta: -44.6 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 18:31:03,914 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 147.3 MB. Free memory was 123.0 MB in the beginning and 122.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 280.26 ms. Allocated memory is still 147.3 MB. Free memory was 104.1 MB in the beginning and 92.6 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 129.24 ms. Allocated memory was 147.3 MB in the beginning and 203.4 MB in the end (delta: 56.1 MB). Free memory was 92.6 MB in the beginning and 180.6 MB in the end (delta: -88.0 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 486.35 ms. Allocated memory is still 203.4 MB. Free memory was 180.0 MB in the beginning and 152.7 MB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1135.47 ms. Allocated memory was 203.4 MB in the beginning and 235.9 MB in the end (delta: 32.5 MB). Free memory was 152.0 MB in the beginning and 196.6 MB in the end (delta: -44.6 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 91]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 75, overapproximation of someBinaryArithmeticDOUBLEoperation at line 40, overapproximation of bitwiseAnd at line 72. Possible FailurePath: [L86] double x = 1.0 / 0.0; [L87] CALL, EXPR round_double(x) [L15] __int32_t msw, exponent_less_1023; [L16] __uint32_t lsw; [L18] ieee_double_shape_type ew_u; [L19] ew_u.value = (x) [L20] EXPR ew_u.parts.msw [L20] (msw) = ew_u.parts.msw [L21] EXPR ew_u.parts.lsw [L21] (lsw) = ew_u.parts.lsw [L23] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L24] COND FALSE !(exponent_less_1023 < 20) [L38] COND TRUE exponent_less_1023 > 51 [L39] COND TRUE exponent_less_1023 == 1024 [L40] return x + x; [L87] RET, EXPR round_double(x) [L87] double res = round_double(x); [L90] CALL, EXPR isinf_double(res) [L65] __int32_t hx, lx; [L67] ieee_double_shape_type ew_u; [L68] ew_u.value = (x) [L69] EXPR ew_u.parts.msw [L69] (hx) = ew_u.parts.msw [L70] EXPR ew_u.parts.lsw [L70] (lx) = ew_u.parts.lsw [L72] hx &= 0x7fffffff [L73] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L74] hx = 0x7ff00000 - hx [L75] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L90] RET, EXPR isinf_double(res) [L90] COND TRUE !isinf_double(res) [L91] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 108 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 111 SDtfs, 17 SDslu, 82 SDs, 0 SdLazy, 124 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=108occurred 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: No data available, 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...