/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_1072a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 18:31:15,422 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 18:31:15,425 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 18:31:15,463 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 18:31:15,463 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 18:31:15,471 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 18:31:15,474 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 18:31:15,477 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 18:31:15,479 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 18:31:15,482 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 18:31:15,483 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 18:31:15,484 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 18:31:15,484 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 18:31:15,486 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 18:31:15,488 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 18:31:15,490 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 18:31:15,491 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 18:31:15,492 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 18:31:15,493 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 18:31:15,501 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 18:31:15,503 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 18:31:15,504 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 18:31:15,505 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 18:31:15,505 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 18:31:15,515 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 18:31:15,521 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 18:31:15,522 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 18:31:15,522 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 18:31:15,523 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 18:31:15,532 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 18:31:15,532 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 18:31:15,533 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 18:31:15,534 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 18:31:15,534 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 18:31:15,534 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 18:31:15,534 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 18:31:15,534 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 18:31:15,534 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 18:31:15,535 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 18:31:15,535 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 18:31:15,535 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 18:31:15,535 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 18:31:15,535 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 18:31:15,536 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 18:31:15,536 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 18:31:15,536 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 18:31:15,536 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 18:31:15,536 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 18:31:15,536 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 18:31:15,537 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 18:31:15,537 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 18:31:15,537 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-08-22 18:31:15,787 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 18:31:15,797 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 18:31:15,800 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 18:31:15,801 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 18:31:15,802 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 18:31:15,802 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1072a.c [2020-08-22 18:31:15,867 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d16f1c427/3a94ea2bd4b1487bb395fce6a841538e/FLAG77aa4be23 [2020-08-22 18:31:16,312 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 18:31:16,312 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1072a.c [2020-08-22 18:31:16,318 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d16f1c427/3a94ea2bd4b1487bb395fce6a841538e/FLAG77aa4be23 [2020-08-22 18:31:16,687 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d16f1c427/3a94ea2bd4b1487bb395fce6a841538e [2020-08-22 18:31:16,694 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 18:31:16,696 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 18:31:16,697 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 18:31:16,697 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 18:31:16,700 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 18:31:16,701 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:31:16" (1/1) ... [2020-08-22 18:31:16,704 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15979b1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:16, skipping insertion in model container [2020-08-22 18:31:16,704 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:31:16" (1/1) ... [2020-08-22 18:31:16,712 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 18:31:16,731 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 18:31:16,941 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 18:31:16,945 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 18:31:17,055 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 18:31:17,085 INFO L208 MainTranslator]: Completed translation [2020-08-22 18:31:17,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:17 WrapperNode [2020-08-22 18:31:17,085 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 18:31:17,086 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 18:31:17,086 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 18:31:17,086 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 18:31:17,095 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:17" (1/1) ... [2020-08-22 18:31:17,096 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:17" (1/1) ... [2020-08-22 18:31:17,104 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:17" (1/1) ... [2020-08-22 18:31:17,105 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:17" (1/1) ... [2020-08-22 18:31:17,119 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:17" (1/1) ... [2020-08-22 18:31:17,125 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:17" (1/1) ... [2020-08-22 18:31:17,127 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:17" (1/1) ... [2020-08-22 18:31:17,130 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 18:31:17,131 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 18:31:17,131 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 18:31:17,131 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 18:31:17,132 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:17" (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 18:31:17,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 18:31:17,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 18:31:17,191 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-22 18:31:17,191 INFO L138 BoogieDeclarations]: Found implementation of procedure trunc_double [2020-08-22 18:31:17,192 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_double [2020-08-22 18:31:17,192 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 18:31:17,192 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 18:31:17,192 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-22 18:31:17,192 INFO L130 BoogieDeclarations]: Found specification of procedure trunc_double [2020-08-22 18:31:17,192 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 18:31:17,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-22 18:31:17,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 18:31:17,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 18:31:17,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 18:31:17,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-22 18:31:17,193 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_double [2020-08-22 18:31:17,193 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 18:31:17,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 18:31:17,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 18:31:17,650 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 18:31:17,650 INFO L295 CfgBuilder]: Removed 10 assume(true) statements. [2020-08-22 18:31:17,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:31:17 BoogieIcfgContainer [2020-08-22 18:31:17,655 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 18:31:17,656 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 18:31:17,656 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 18:31:17,659 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 18:31:17,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 06:31:16" (1/3) ... [2020-08-22 18:31:17,660 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52608492 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:31:17, skipping insertion in model container [2020-08-22 18:31:17,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:17" (2/3) ... [2020-08-22 18:31:17,660 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52608492 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:31:17, skipping insertion in model container [2020-08-22 18:31:17,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:31:17" (3/3) ... [2020-08-22 18:31:17,662 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1072a.c [2020-08-22 18:31:17,669 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 18:31:17,677 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 18:31:17,688 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 18:31:17,705 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 18:31:17,705 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 18:31:17,705 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-08-22 18:31:17,705 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 18:31:17,705 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 18:31:17,706 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 18:31:17,706 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 18:31:17,706 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 18:31:17,721 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states. [2020-08-22 18:31:17,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-22 18:31:17,732 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:31:17,733 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] [2020-08-22 18:31:17,734 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:31:17,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:31:17,739 INFO L82 PathProgramCache]: Analyzing trace with hash -1396348261, now seen corresponding path program 1 times [2020-08-22 18:31:17,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:31:17,745 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1489439767] [2020-08-22 18:31:17,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:31:17,800 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:31:17,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:31:17,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:31:17,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:31:17,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 18:31:17,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:31:17,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 18:31:18,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:31:18,023 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 18:31:18,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1489439767] [2020-08-22 18:31:18,030 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:31:18,030 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 18:31:18,031 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64643146] [2020-08-22 18:31:18,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 18:31:18,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:31:18,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 18:31:18,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 18:31:18,056 INFO L87 Difference]: Start difference. First operand 114 states. Second operand 4 states. [2020-08-22 18:31:18,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:31:18,393 INFO L93 Difference]: Finished difference Result 213 states and 242 transitions. [2020-08-22 18:31:18,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 18:31:18,395 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2020-08-22 18:31:18,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:31:18,407 INFO L225 Difference]: With dead ends: 213 [2020-08-22 18:31:18,407 INFO L226 Difference]: Without dead ends: 107 [2020-08-22 18:31:18,411 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 18:31:18,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-08-22 18:31:18,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2020-08-22 18:31:18,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-08-22 18:31:18,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 110 transitions. [2020-08-22 18:31:18,469 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 110 transitions. Word has length 40 [2020-08-22 18:31:18,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:31:18,470 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 110 transitions. [2020-08-22 18:31:18,470 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 18:31:18,470 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 110 transitions. [2020-08-22 18:31:18,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-08-22 18:31:18,473 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:31:18,473 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] [2020-08-22 18:31:18,474 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 18:31:18,474 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:31:18,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:31:18,475 INFO L82 PathProgramCache]: Analyzing trace with hash -247930506, now seen corresponding path program 1 times [2020-08-22 18:31:18,475 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:31:18,476 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1128041911] [2020-08-22 18:31:18,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:31:18,479 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:31:18,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 18:31:18,638 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 18:31:18,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 18:31:18,706 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 18:31:18,758 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 18:31:18,758 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 18:31:18,759 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 18:31:18,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 06:31:18 BoogieIcfgContainer [2020-08-22 18:31:18,789 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 18:31:18,795 INFO L168 Benchmark]: Toolchain (without parser) took 2094.49 ms. Allocated memory was 137.9 MB in the beginning and 232.8 MB in the end (delta: 94.9 MB). Free memory was 102.0 MB in the beginning and 190.4 MB in the end (delta: -88.5 MB). Peak memory consumption was 6.4 MB. Max. memory is 7.1 GB. [2020-08-22 18:31:18,796 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 137.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-08-22 18:31:18,797 INFO L168 Benchmark]: CACSL2BoogieTranslator took 388.68 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 101.6 MB in the beginning and 178.5 MB in the end (delta: -77.0 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. [2020-08-22 18:31:18,798 INFO L168 Benchmark]: Boogie Preprocessor took 44.52 ms. Allocated memory is still 201.3 MB. Free memory was 178.5 MB in the beginning and 176.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-08-22 18:31:18,799 INFO L168 Benchmark]: RCFGBuilder took 524.58 ms. Allocated memory is still 201.3 MB. Free memory was 176.5 MB in the beginning and 146.1 MB in the end (delta: 30.4 MB). Peak memory consumption was 30.4 MB. Max. memory is 7.1 GB. [2020-08-22 18:31:18,800 INFO L168 Benchmark]: TraceAbstraction took 1132.51 ms. Allocated memory was 201.3 MB in the beginning and 232.8 MB in the end (delta: 31.5 MB). Free memory was 145.4 MB in the beginning and 190.4 MB in the end (delta: -45.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 18:31:18,804 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 137.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 388.68 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 101.6 MB in the beginning and 178.5 MB in the end (delta: -77.0 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 44.52 ms. Allocated memory is still 201.3 MB. Free memory was 178.5 MB in the beginning and 176.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 524.58 ms. Allocated memory is still 201.3 MB. Free memory was 176.5 MB in the beginning and 146.1 MB in the end (delta: 30.4 MB). Peak memory consumption was 30.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1132.51 ms. Allocated memory was 201.3 MB in the beginning and 232.8 MB in the end (delta: 31.5 MB). Free memory was 145.4 MB in the beginning and 190.4 MB in the end (delta: -45.0 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 89]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 74, overapproximation of someBinaryArithmeticDOUBLEoperation at line 49, overapproximation of bitwiseAnd at line 71. Possible FailurePath: [L84] double x = 1.0 / 0.0; [L85] CALL, EXPR trunc_double(x) [L18] int signbit; [L19] int msw; [L20] unsigned int lsw; [L21] int exponent_less_1023; [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (msw) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (lsw) = ew_u.parts.lsw [L28] signbit = msw & 0x80000000 [L29] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L30] COND FALSE !(exponent_less_1023 < 20) [L47] COND TRUE exponent_less_1023 > 51 [L48] COND TRUE exponent_less_1023 == 1024 [L49] return x + x; [L85] RET, EXPR trunc_double(x) [L85] double res = trunc_double(x); [L88] CALL, EXPR isinf_double(res) [L64] __int32_t hx, lx; [L66] ieee_double_shape_type ew_u; [L67] ew_u.value = (x) [L68] EXPR ew_u.parts.msw [L68] (hx) = ew_u.parts.msw [L69] EXPR ew_u.parts.lsw [L69] (lx) = ew_u.parts.lsw [L71] hx &= 0x7fffffff [L72] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L73] hx = 0x7ff00000 - hx [L74] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L88] RET, EXPR isinf_double(res) [L88] COND TRUE !isinf_double(res) [L89] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 118 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: 113 SDtfs, 19 SDslu, 69 SDs, 0 SdLazy, 139 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=114occurred 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...