/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_1092d.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 18:31:29,496 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 18:31:29,499 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 18:31:29,541 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 18:31:29,541 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 18:31:29,550 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 18:31:29,553 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 18:31:29,557 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 18:31:29,559 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 18:31:29,563 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 18:31:29,564 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 18:31:29,564 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 18:31:29,565 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 18:31:29,568 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 18:31:29,570 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 18:31:29,571 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 18:31:29,573 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 18:31:29,573 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 18:31:29,575 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 18:31:29,584 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 18:31:29,586 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 18:31:29,587 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 18:31:29,588 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 18:31:29,589 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 18:31:29,601 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 18:31:29,619 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 18:31:29,628 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 18:31:29,628 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 18:31:29,629 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 18:31:29,630 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 18:31:29,630 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 18:31:29,630 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 18:31:29,630 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 18:31:29,630 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 18:31:29,630 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 18:31:29,631 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 18:31:29,631 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 18:31:29,631 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 18:31:29,631 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 18:31:29,631 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 18:31:29,632 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 18:31:29,632 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 18:31:29,632 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 18:31:29,632 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 18:31:29,632 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 18:31:29,633 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 18:31:29,633 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 18:31:29,633 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 18:31:29,633 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-08-22 18:31:29,928 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 18:31:29,940 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 18:31:29,944 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 18:31:29,945 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 18:31:29,946 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 18:31:29,947 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1092d.c [2020-08-22 18:31:30,010 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b9364780/d0bd3e92fd4e4ee2b2324171cabebe7f/FLAG2e1ec99c1 [2020-08-22 18:31:30,485 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 18:31:30,485 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1092d.c [2020-08-22 18:31:30,494 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b9364780/d0bd3e92fd4e4ee2b2324171cabebe7f/FLAG2e1ec99c1 [2020-08-22 18:31:30,838 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b9364780/d0bd3e92fd4e4ee2b2324171cabebe7f [2020-08-22 18:31:30,847 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 18:31:30,849 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 18:31:30,850 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 18:31:30,850 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 18:31:30,854 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 18:31:30,855 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:31:30" (1/1) ... [2020-08-22 18:31:30,859 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bd22e29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:30, skipping insertion in model container [2020-08-22 18:31:30,859 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:31:30" (1/1) ... [2020-08-22 18:31:30,868 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 18:31:30,898 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 18:31:31,192 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 18:31:31,197 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 18:31:31,350 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 18:31:31,369 INFO L208 MainTranslator]: Completed translation [2020-08-22 18:31:31,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:31 WrapperNode [2020-08-22 18:31:31,370 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 18:31:31,371 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 18:31:31,371 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 18:31:31,371 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 18:31:31,381 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:31" (1/1) ... [2020-08-22 18:31:31,382 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:31" (1/1) ... [2020-08-22 18:31:31,392 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:31" (1/1) ... [2020-08-22 18:31:31,393 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:31" (1/1) ... [2020-08-22 18:31:31,406 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:31" (1/1) ... [2020-08-22 18:31:31,413 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:31" (1/1) ... [2020-08-22 18:31:31,415 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:31" (1/1) ... [2020-08-22 18:31:31,418 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 18:31:31,419 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 18:31:31,419 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 18:31:31,419 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 18:31:31,420 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:31" (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 18:31:31,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 18:31:31,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 18:31:31,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_double [2020-08-22 18:31:31,481 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_double [2020-08-22 18:31:31,481 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 18:31:31,482 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 18:31:31,482 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_double [2020-08-22 18:31:31,482 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 18:31:31,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-22 18:31:31,482 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 18:31:31,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 18:31:31,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 18:31:31,483 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-22 18:31:31,483 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_double [2020-08-22 18:31:31,483 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 18:31:31,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 18:31:31,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 18:31:31,960 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 18:31:31,961 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-08-22 18:31:31,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:31:31 BoogieIcfgContainer [2020-08-22 18:31:31,966 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 18:31:31,968 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 18:31:31,968 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 18:31:31,971 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 18:31:31,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 06:31:30" (1/3) ... [2020-08-22 18:31:31,972 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c37ac28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:31:31, skipping insertion in model container [2020-08-22 18:31:31,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:31" (2/3) ... [2020-08-22 18:31:31,973 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c37ac28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:31:31, skipping insertion in model container [2020-08-22 18:31:31,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:31:31" (3/3) ... [2020-08-22 18:31:31,975 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1092d.c [2020-08-22 18:31:31,986 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 18:31:31,994 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 18:31:32,010 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 18:31:32,032 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 18:31:32,033 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 18:31:32,033 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-08-22 18:31:32,033 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 18:31:32,034 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 18:31:32,034 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 18:31:32,034 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 18:31:32,034 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 18:31:32,053 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states. [2020-08-22 18:31:32,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-08-22 18:31:32,066 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:31:32,067 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] [2020-08-22 18:31:32,068 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:31:32,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:31:32,073 INFO L82 PathProgramCache]: Analyzing trace with hash -14929888, now seen corresponding path program 1 times [2020-08-22 18:31:32,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:31:32,083 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [417300181] [2020-08-22 18:31:32,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:31:32,138 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:31:32,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:31:32,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:31:32,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:31:32,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 18:31:32,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:31:32,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 18:31:32,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:31:32,323 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 18:31:32,326 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [417300181] [2020-08-22 18:31:32,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:31:32,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 18:31:32,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316320732] [2020-08-22 18:31:32,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 18:31:32,335 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:31:32,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 18:31:32,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 18:31:32,353 INFO L87 Difference]: Start difference. First operand 119 states. Second operand 4 states. [2020-08-22 18:31:32,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:31:32,701 INFO L93 Difference]: Finished difference Result 221 states and 264 transitions. [2020-08-22 18:31:32,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 18:31:32,703 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2020-08-22 18:31:32,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:31:32,715 INFO L225 Difference]: With dead ends: 221 [2020-08-22 18:31:32,716 INFO L226 Difference]: Without dead ends: 112 [2020-08-22 18:31:32,721 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 18:31:32,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-08-22 18:31:32,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2020-08-22 18:31:32,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-08-22 18:31:32,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 126 transitions. [2020-08-22 18:31:32,794 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 126 transitions. Word has length 41 [2020-08-22 18:31:32,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:31:32,794 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 126 transitions. [2020-08-22 18:31:32,794 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 18:31:32,795 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 126 transitions. [2020-08-22 18:31:32,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-08-22 18:31:32,798 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:31:32,798 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] [2020-08-22 18:31:32,799 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 18:31:32,799 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:31:32,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:31:32,800 INFO L82 PathProgramCache]: Analyzing trace with hash 345019468, now seen corresponding path program 1 times [2020-08-22 18:31:32,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:31:32,800 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [409667089] [2020-08-22 18:31:32,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:31:32,803 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:31:32,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 18:31:32,927 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 18:31:33,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 18:31:33,054 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 18:31:33,089 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 18:31:33,090 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 18:31:33,091 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 18:31:33,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 06:31:33 BoogieIcfgContainer [2020-08-22 18:31:33,113 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 18:31:33,116 INFO L168 Benchmark]: Toolchain (without parser) took 2265.96 ms. Allocated memory was 145.2 MB in the beginning and 235.9 MB in the end (delta: 90.7 MB). Free memory was 103.1 MB in the beginning and 188.5 MB in the end (delta: -85.4 MB). Peak memory consumption was 5.3 MB. Max. memory is 7.1 GB. [2020-08-22 18:31:33,117 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 145.2 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-22 18:31:33,118 INFO L168 Benchmark]: CACSL2BoogieTranslator took 520.70 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 102.9 MB in the beginning and 179.3 MB in the end (delta: -76.4 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. [2020-08-22 18:31:33,119 INFO L168 Benchmark]: Boogie Preprocessor took 47.67 ms. Allocated memory is still 202.4 MB. Free memory was 179.3 MB in the beginning and 177.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-08-22 18:31:33,119 INFO L168 Benchmark]: RCFGBuilder took 547.67 ms. Allocated memory is still 202.4 MB. Free memory was 177.2 MB in the beginning and 147.4 MB in the end (delta: 29.8 MB). Peak memory consumption was 29.8 MB. Max. memory is 7.1 GB. [2020-08-22 18:31:33,120 INFO L168 Benchmark]: TraceAbstraction took 1145.28 ms. Allocated memory was 202.4 MB in the beginning and 235.9 MB in the end (delta: 33.6 MB). Free memory was 146.8 MB in the beginning and 188.5 MB in the end (delta: -41.7 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 18:31:33,125 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 145.2 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 520.70 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 102.9 MB in the beginning and 179.3 MB in the end (delta: -76.4 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 47.67 ms. Allocated memory is still 202.4 MB. Free memory was 179.3 MB in the beginning and 177.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 547.67 ms. Allocated memory is still 202.4 MB. Free memory was 177.2 MB in the beginning and 147.4 MB in the end (delta: 29.8 MB). Peak memory consumption was 29.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1145.28 ms. Allocated memory was 202.4 MB in the beginning and 235.9 MB in the end (delta: 33.6 MB). Free memory was 146.8 MB in the beginning and 188.5 MB in the end (delta: -41.7 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 108]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 92, overapproximation of someBinaryArithmeticDOUBLEoperation at line 103, overapproximation of bitwiseAnd at line 89. Possible FailurePath: [L14] static const double huge_ceil = 1.0e300; [L103] double x = -1.0 / 0.0; [L104] CALL, EXPR ceil_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 FALSE !(j0 < 20) [L48] COND TRUE j0 > 51 [L49] COND FALSE !(j0 == 0x400) [L52] return x; [L104] RET, EXPR ceil_double(x) [L104] double res = ceil_double(x); [L107] CALL, EXPR isinf_double(res) [L82] __int32_t hx, lx; [L84] ieee_double_shape_type ew_u; [L85] ew_u.value = (x) [L86] EXPR ew_u.parts.msw [L86] (hx) = ew_u.parts.msw [L87] EXPR ew_u.parts.lsw [L87] (lx) = ew_u.parts.lsw [L89] hx &= 0x7fffffff [L90] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L91] hx = 0x7ff00000 - hx [L92] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L107] RET, EXPR isinf_double(res) [L107] COND TRUE !isinf_double(res) [L108] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 119 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 129 SDtfs, 21 SDslu, 97 SDs, 0 SdLazy, 141 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=119occurred 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...