/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/float_req_bl_1210.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 13:02:15,326 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 13:02:15,329 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 13:02:15,347 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 13:02:15,347 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 13:02:15,349 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 13:02:15,351 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 13:02:15,360 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 13:02:15,364 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 13:02:15,366 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 13:02:15,368 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 13:02:15,370 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 13:02:15,370 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 13:02:15,372 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 13:02:15,374 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 13:02:15,375 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 13:02:15,377 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 13:02:15,377 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 13:02:15,379 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 13:02:15,384 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 13:02:15,389 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 13:02:15,394 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 13:02:15,395 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 13:02:15,395 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 13:02:15,397 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-07 13:02:15,408 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 13:02:15,409 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 13:02:15,410 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 13:02:15,411 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-07 13:02:15,439 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 13:02:15,439 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 13:02:15,443 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 13:02:15,443 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 13:02:15,445 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 13:02:15,445 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 13:02:15,446 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 13:02:15,446 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 13:02:15,446 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 13:02:15,446 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 13:02:15,446 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 13:02:15,446 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 13:02:15,447 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 13:02:15,447 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 13:02:15,447 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 13:02:15,447 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 13:02:15,447 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 13:02:15,448 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 13:02:15,448 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 13:02:15,448 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 13:02:15,449 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 13:02:15,449 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 13:02:15,450 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-07 13:02:15,725 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 13:02:15,739 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 13:02:15,744 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 13:02:15,745 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 13:02:15,745 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 13:02:15,745 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1210.c [2020-07-07 13:02:15,811 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/532c90ad2/5fa8ed6d1f5f485d8d27dfbc335984c9/FLAG550bed63f [2020-07-07 13:02:16,273 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 13:02:16,273 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1210.c [2020-07-07 13:02:16,281 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/532c90ad2/5fa8ed6d1f5f485d8d27dfbc335984c9/FLAG550bed63f [2020-07-07 13:02:16,655 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/532c90ad2/5fa8ed6d1f5f485d8d27dfbc335984c9 [2020-07-07 13:02:16,665 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 13:02:16,667 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 13:02:16,668 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 13:02:16,668 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 13:02:16,672 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 13:02:16,673 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:02:16" (1/1) ... [2020-07-07 13:02:16,676 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9a739c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:02:16, skipping insertion in model container [2020-07-07 13:02:16,676 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:02:16" (1/1) ... [2020-07-07 13:02:16,683 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 13:02:16,704 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 13:02:16,886 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:02:16,895 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 13:02:16,921 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:02:17,012 INFO L208 MainTranslator]: Completed translation [2020-07-07 13:02:17,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:02:17 WrapperNode [2020-07-07 13:02:17,013 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 13:02:17,014 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 13:02:17,014 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 13:02:17,014 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 13:02:17,024 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:02:17" (1/1) ... [2020-07-07 13:02:17,024 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:02:17" (1/1) ... [2020-07-07 13:02:17,040 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:02:17" (1/1) ... [2020-07-07 13:02:17,040 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:02:17" (1/1) ... [2020-07-07 13:02:17,054 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:02:17" (1/1) ... [2020-07-07 13:02:17,061 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:02:17" (1/1) ... [2020-07-07 13:02:17,063 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:02:17" (1/1) ... [2020-07-07 13:02:17,067 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 13:02:17,067 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 13:02:17,067 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 13:02:17,067 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 13:02:17,068 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:02:17" (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 [2020-07-07 13:02:17,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 13:02:17,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 13:02:17,127 INFO L138 BoogieDeclarations]: Found implementation of procedure modf_float [2020-07-07 13:02:17,127 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2020-07-07 13:02:17,127 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 13:02:17,127 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 13:02:17,127 INFO L130 BoogieDeclarations]: Found specification of procedure modf_float [2020-07-07 13:02:17,127 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-07 13:02:17,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-07 13:02:17,127 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-07 13:02:17,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-07 13:02:17,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-07 13:02:17,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-07 13:02:17,128 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2020-07-07 13:02:17,128 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 13:02:17,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 13:02:17,129 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 13:02:17,591 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 13:02:17,592 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-07-07 13:02:17,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:02:17 BoogieIcfgContainer [2020-07-07 13:02:17,603 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 13:02:17,606 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 13:02:17,606 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 13:02:17,611 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 13:02:17,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 01:02:16" (1/3) ... [2020-07-07 13:02:17,613 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77fc90b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:02:17, skipping insertion in model container [2020-07-07 13:02:17,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:02:17" (2/3) ... [2020-07-07 13:02:17,614 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77fc90b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:02:17, skipping insertion in model container [2020-07-07 13:02:17,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:02:17" (3/3) ... [2020-07-07 13:02:17,617 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1210.c [2020-07-07 13:02:17,629 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 13:02:17,638 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 13:02:17,655 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 13:02:17,681 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 13:02:17,682 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 13:02:17,682 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-07 13:02:17,682 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 13:02:17,682 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 13:02:17,682 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 13:02:17,683 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 13:02:17,683 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 13:02:17,702 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states. [2020-07-07 13:02:17,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-07-07 13:02:17,715 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:02:17,716 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] [2020-07-07 13:02:17,717 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:02:17,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:02:17,722 INFO L82 PathProgramCache]: Analyzing trace with hash -3412261, now seen corresponding path program 1 times [2020-07-07 13:02:17,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:02:17,729 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1779025156] [2020-07-07 13:02:17,730 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:02:17,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:02:17,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:02:17,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:02:17,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:02:17,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:02:17,973 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:02:17,976 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1779025156] [2020-07-07 13:02:17,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:02:17,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 13:02:17,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575440656] [2020-07-07 13:02:17,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 13:02:17,985 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:02:17,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 13:02:18,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 13:02:18,002 INFO L87 Difference]: Start difference. First operand 134 states. Second operand 4 states. [2020-07-07 13:02:18,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:02:18,385 INFO L93 Difference]: Finished difference Result 249 states and 287 transitions. [2020-07-07 13:02:18,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-07 13:02:18,387 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2020-07-07 13:02:18,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:02:18,400 INFO L225 Difference]: With dead ends: 249 [2020-07-07 13:02:18,400 INFO L226 Difference]: Without dead ends: 120 [2020-07-07 13:02:18,405 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-07 13:02:18,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-07-07 13:02:18,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2020-07-07 13:02:18,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-07-07 13:02:18,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 124 transitions. [2020-07-07 13:02:18,506 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 124 transitions. Word has length 41 [2020-07-07 13:02:18,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:02:18,507 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 124 transitions. [2020-07-07 13:02:18,507 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 13:02:18,507 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 124 transitions. [2020-07-07 13:02:18,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-07 13:02:18,511 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:02:18,511 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] [2020-07-07 13:02:18,512 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 13:02:18,512 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:02:18,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:02:18,512 INFO L82 PathProgramCache]: Analyzing trace with hash 911495883, now seen corresponding path program 1 times [2020-07-07 13:02:18,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:02:18,513 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2105491085] [2020-07-07 13:02:18,513 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:02:18,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:02:18,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:02:18,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:02:18,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:02:18,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:02:18,682 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:02:18,682 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2105491085] [2020-07-07 13:02:18,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:02:18,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-07 13:02:18,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526194190] [2020-07-07 13:02:18,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-07 13:02:18,684 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:02:18,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-07 13:02:18,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-07 13:02:18,685 INFO L87 Difference]: Start difference. First operand 120 states and 124 transitions. Second operand 5 states. [2020-07-07 13:02:18,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:02:18,946 INFO L93 Difference]: Finished difference Result 127 states and 130 transitions. [2020-07-07 13:02:18,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 13:02:18,947 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 57 [2020-07-07 13:02:18,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:02:18,949 INFO L225 Difference]: With dead ends: 127 [2020-07-07 13:02:18,950 INFO L226 Difference]: Without dead ends: 120 [2020-07-07 13:02:18,951 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-07 13:02:18,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-07-07 13:02:18,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2020-07-07 13:02:18,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-07-07 13:02:18,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 123 transitions. [2020-07-07 13:02:18,966 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 123 transitions. Word has length 57 [2020-07-07 13:02:18,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:02:18,968 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 123 transitions. [2020-07-07 13:02:18,968 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-07 13:02:18,969 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 123 transitions. [2020-07-07 13:02:18,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-07-07 13:02:18,971 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:02:18,971 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:02:18,971 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 13:02:18,972 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:02:18,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:02:18,972 INFO L82 PathProgramCache]: Analyzing trace with hash 376809565, now seen corresponding path program 1 times [2020-07-07 13:02:18,972 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:02:18,973 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1211667558] [2020-07-07 13:02:18,973 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:02:19,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 13:02:19,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 13:02:19,167 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:02:19,168 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-07 13:02:19,168 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-07 13:02:19,169 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 13:02:19,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 01:02:19 BoogieIcfgContainer [2020-07-07 13:02:19,189 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 13:02:19,191 INFO L168 Benchmark]: Toolchain (without parser) took 2523.97 ms. Allocated memory was 136.3 MB in the beginning and 229.6 MB in the end (delta: 93.3 MB). Free memory was 100.1 MB in the beginning and 131.2 MB in the end (delta: -31.1 MB). Peak memory consumption was 62.3 MB. Max. memory is 7.1 GB. [2020-07-07 13:02:19,192 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 136.3 MB. Free memory was 118.5 MB in the beginning and 118.3 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-07-07 13:02:19,194 INFO L168 Benchmark]: CACSL2BoogieTranslator took 345.39 ms. Allocated memory was 136.3 MB in the beginning and 200.8 MB in the end (delta: 64.5 MB). Free memory was 99.7 MB in the beginning and 179.7 MB in the end (delta: -80.0 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. [2020-07-07 13:02:19,194 INFO L168 Benchmark]: Boogie Preprocessor took 53.01 ms. Allocated memory is still 200.8 MB. Free memory was 179.7 MB in the beginning and 177.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. [2020-07-07 13:02:19,195 INFO L168 Benchmark]: RCFGBuilder took 535.65 ms. Allocated memory is still 200.8 MB. Free memory was 176.6 MB in the beginning and 145.0 MB in the end (delta: 31.5 MB). Peak memory consumption was 31.5 MB. Max. memory is 7.1 GB. [2020-07-07 13:02:19,196 INFO L168 Benchmark]: TraceAbstraction took 1582.95 ms. Allocated memory was 200.8 MB in the beginning and 229.6 MB in the end (delta: 28.8 MB). Free memory was 144.3 MB in the beginning and 131.2 MB in the end (delta: 13.2 MB). Peak memory consumption was 42.0 MB. Max. memory is 7.1 GB. [2020-07-07 13:02:19,200 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 136.3 MB. Free memory was 118.5 MB in the beginning and 118.3 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 345.39 ms. Allocated memory was 136.3 MB in the beginning and 200.8 MB in the end (delta: 64.5 MB). Free memory was 99.7 MB in the beginning and 179.7 MB in the end (delta: -80.0 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 53.01 ms. Allocated memory is still 200.8 MB. Free memory was 179.7 MB in the beginning and 177.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 535.65 ms. Allocated memory is still 200.8 MB. Free memory was 176.6 MB in the beginning and 145.0 MB in the end (delta: 31.5 MB). Peak memory consumption was 31.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1582.95 ms. Allocated memory was 200.8 MB in the beginning and 229.6 MB in the end (delta: 28.8 MB). Free memory was 144.3 MB in the beginning and 131.2 MB in the end (delta: 13.2 MB). Peak memory consumption was 42.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 86]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 73, overapproximation of someBinaryArithmeticFLOAToperation at line 80, overapproximation of bitwiseAnd at line 26. Possible FailurePath: [L11] static const float one_modf = 1.0; [L80] float x = 0.0f / 0.0f; [L81] float iptr; [L82] CALL, EXPR modf_float(x, &iptr) [L14] __int32_t i0, j0; [L15] __uint32_t i; [L17] ieee_float_shape_type gf_u; [L18] gf_u.value = (x) [L19] EXPR gf_u.word [L19] (i0) = gf_u.word [L21] j0 = ((i0 >> 23) & 0xff) - 0x7f [L22] COND TRUE j0 < 23 [L23] COND TRUE j0 < 0 [L25] ieee_float_shape_type sf_u; [L26] sf_u.word = (i0 & 0x80000000) [L27] EXPR sf_u.value [L27] (*iptr) = sf_u.value [L29] return x; [L82] RET, EXPR modf_float(x, &iptr) [L82] float res = modf_float(x, &iptr); [L85] EXPR \read(iptr) [L85] CALL, EXPR isnan_float(iptr) [L73] return x != x; [L85] RET, EXPR isnan_float(iptr) [L85] isnan_float(iptr) && !isnan_float(res) [L85] CALL, EXPR isnan_float(res) [L73] return x != x; [L85] RET, EXPR isnan_float(res) [L85] isnan_float(iptr) && !isnan_float(res) [L85] COND TRUE isnan_float(iptr) && !isnan_float(res) [L86] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 134 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.4s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 253 SDtfs, 38 SDslu, 251 SDs, 0 SdLazy, 338 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=134occurred 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, 2 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...