/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 21:50:37,639 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 21:50:37,642 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 21:50:37,682 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 21:50:37,682 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 21:50:37,693 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 21:50:37,695 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 21:50:37,697 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 21:50:37,698 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 21:50:37,699 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 21:50:37,700 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 21:50:37,701 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 21:50:37,701 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 21:50:37,702 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 21:50:37,703 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 21:50:37,704 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 21:50:37,705 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 21:50:37,706 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 21:50:37,707 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 21:50:37,709 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 21:50:37,710 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 21:50:37,711 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 21:50:37,713 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 21:50:37,713 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 21:50:37,716 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 21:50:37,723 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 21:50:37,724 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 21:50:37,724 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 21:50:37,725 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 21:50:37,734 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 21:50:37,734 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 21:50:37,735 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 21:50:37,736 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 21:50:37,736 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 21:50:37,736 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 21:50:37,736 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 21:50:37,736 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 21:50:37,737 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 21:50:37,737 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 21:50:37,737 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 21:50:37,737 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 21:50:37,737 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 21:50:37,738 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 21:50:37,738 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 21:50:37,738 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 21:50:37,738 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 21:50:37,738 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 21:50:37,739 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 21:50:37,739 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 21:50:37,739 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 21:50:37,739 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 21:50:37,739 INFO L138 SettingsManager]: * Use separate solver for trace checks=false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-08-22 21:50:38,020 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 21:50:38,032 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 21:50:38,035 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 21:50:38,037 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 21:50:38,037 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 21:50:38,038 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2020-08-22 21:50:38,097 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5213cd77b/7b7a38d8522e4506bce96309aa1da9f2/FLAG016fc71e6 [2020-08-22 21:50:38,517 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 21:50:38,518 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2020-08-22 21:50:38,525 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5213cd77b/7b7a38d8522e4506bce96309aa1da9f2/FLAG016fc71e6 [2020-08-22 21:50:38,874 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5213cd77b/7b7a38d8522e4506bce96309aa1da9f2 [2020-08-22 21:50:38,884 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 21:50:38,886 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 21:50:38,887 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 21:50:38,887 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 21:50:38,891 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 21:50:38,892 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 09:50:38" (1/1) ... [2020-08-22 21:50:38,895 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5167cd2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:50:38, skipping insertion in model container [2020-08-22 21:50:38,895 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 09:50:38" (1/1) ... [2020-08-22 21:50:38,902 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 21:50:38,933 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 21:50:39,157 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 21:50:39,163 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 21:50:39,286 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 21:50:39,305 INFO L208 MainTranslator]: Completed translation [2020-08-22 21:50:39,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:50:39 WrapperNode [2020-08-22 21:50:39,306 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 21:50:39,306 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 21:50:39,306 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 21:50:39,307 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 21:50:39,317 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:50:39" (1/1) ... [2020-08-22 21:50:39,318 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:50:39" (1/1) ... [2020-08-22 21:50:39,327 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:50:39" (1/1) ... [2020-08-22 21:50:39,328 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:50:39" (1/1) ... [2020-08-22 21:50:39,342 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:50:39" (1/1) ... [2020-08-22 21:50:39,350 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:50:39" (1/1) ... [2020-08-22 21:50:39,353 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:50:39" (1/1) ... [2020-08-22 21:50:39,357 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 21:50:39,357 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 21:50:39,357 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 21:50:39,357 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 21:50:39,358 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:50:39" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 21:50:39,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 21:50:39,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 21:50:39,432 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-08-22 21:50:39,432 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_float [2020-08-22 21:50:39,432 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 21:50:39,432 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 21:50:39,432 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-08-22 21:50:39,433 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-08-22 21:50:39,433 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 21:50:39,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-22 21:50:39,433 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 21:50:39,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 21:50:39,433 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-22 21:50:39,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 21:50:39,434 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_float [2020-08-22 21:50:39,434 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 21:50:39,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 21:50:39,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-08-22 21:50:39,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 21:50:40,023 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 21:50:40,023 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-08-22 21:50:40,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 09:50:40 BoogieIcfgContainer [2020-08-22 21:50:40,030 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 21:50:40,031 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 21:50:40,031 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 21:50:40,034 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 21:50:40,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 09:50:38" (1/3) ... [2020-08-22 21:50:40,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7868f604 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 09:50:40, skipping insertion in model container [2020-08-22 21:50:40,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:50:39" (2/3) ... [2020-08-22 21:50:40,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7868f604 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 09:50:40, skipping insertion in model container [2020-08-22 21:50:40,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 09:50:40" (3/3) ... [2020-08-22 21:50:40,038 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1131b.c [2020-08-22 21:50:40,049 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 21:50:40,058 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 21:50:40,072 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 21:50:40,098 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 21:50:40,099 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 21:50:40,099 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 21:50:40,099 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 21:50:40,099 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 21:50:40,100 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 21:50:40,100 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 21:50:40,100 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 21:50:40,125 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states. [2020-08-22 21:50:40,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-08-22 21:50:40,137 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 21:50:40,138 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] [2020-08-22 21:50:40,138 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 21:50:40,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 21:50:40,143 INFO L82 PathProgramCache]: Analyzing trace with hash -309473205, now seen corresponding path program 1 times [2020-08-22 21:50:40,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 21:50:40,150 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [666953152] [2020-08-22 21:50:40,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 21:50:40,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:50:40,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 21:50:40,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:50:40,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 21:50:40,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:50:40,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 21:50:40,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:50:40,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 21:50:40,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [666953152] [2020-08-22 21:50:40,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 21:50:40,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 21:50:40,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822735686] [2020-08-22 21:50:40,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 21:50:40,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 21:50:40,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 21:50:40,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 21:50:40,438 INFO L87 Difference]: Start difference. First operand 162 states. Second operand 4 states. [2020-08-22 21:50:40,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 21:50:40,870 INFO L93 Difference]: Finished difference Result 306 states and 369 transitions. [2020-08-22 21:50:40,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 21:50:40,872 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2020-08-22 21:50:40,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 21:50:40,885 INFO L225 Difference]: With dead ends: 306 [2020-08-22 21:50:40,885 INFO L226 Difference]: Without dead ends: 155 [2020-08-22 21:50:40,890 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 21:50:40,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-08-22 21:50:40,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2020-08-22 21:50:40,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-08-22 21:50:40,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 170 transitions. [2020-08-22 21:50:40,949 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 170 transitions. Word has length 49 [2020-08-22 21:50:40,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 21:50:40,950 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 170 transitions. [2020-08-22 21:50:40,950 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 21:50:40,950 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 170 transitions. [2020-08-22 21:50:40,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-08-22 21:50:40,953 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 21:50:40,953 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 21:50:40,954 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 21:50:40,954 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 21:50:40,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 21:50:40,955 INFO L82 PathProgramCache]: Analyzing trace with hash -1032631156, now seen corresponding path program 1 times [2020-08-22 21:50:40,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 21:50:40,955 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1577826225] [2020-08-22 21:50:40,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 21:50:41,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 21:50:41,077 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 21:50:41,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 21:50:41,201 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 21:50:41,238 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 21:50:41,238 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 21:50:41,239 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 21:50:41,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 09:50:41 BoogieIcfgContainer [2020-08-22 21:50:41,290 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 21:50:41,293 INFO L168 Benchmark]: Toolchain (without parser) took 2406.34 ms. Allocated memory was 140.0 MB in the beginning and 234.4 MB in the end (delta: 94.4 MB). Free memory was 103.6 MB in the beginning and 161.8 MB in the end (delta: -58.2 MB). Peak memory consumption was 36.2 MB. Max. memory is 7.1 GB. [2020-08-22 21:50:41,294 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 140.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 21:50:41,295 INFO L168 Benchmark]: CACSL2BoogieTranslator took 418.83 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 103.2 MB in the beginning and 179.6 MB in the end (delta: -76.4 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. [2020-08-22 21:50:41,296 INFO L168 Benchmark]: Boogie Preprocessor took 50.46 ms. Allocated memory is still 202.9 MB. Free memory was 179.6 MB in the beginning and 177.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-08-22 21:50:41,297 INFO L168 Benchmark]: RCFGBuilder took 672.71 ms. Allocated memory is still 202.9 MB. Free memory was 177.0 MB in the beginning and 140.3 MB in the end (delta: 36.7 MB). Peak memory consumption was 36.7 MB. Max. memory is 7.1 GB. [2020-08-22 21:50:41,298 INFO L168 Benchmark]: TraceAbstraction took 1259.42 ms. Allocated memory was 202.9 MB in the beginning and 234.4 MB in the end (delta: 31.5 MB). Free memory was 140.3 MB in the beginning and 161.8 MB in the end (delta: -21.5 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-08-22 21:50:41,305 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 140.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 418.83 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 103.2 MB in the beginning and 179.6 MB in the end (delta: -76.4 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 50.46 ms. Allocated memory is still 202.9 MB. Free memory was 179.6 MB in the beginning and 177.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 672.71 ms. Allocated memory is still 202.9 MB. Free memory was 177.0 MB in the beginning and 140.3 MB in the end (delta: 36.7 MB). Peak memory consumption was 36.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1259.42 ms. Allocated memory was 202.9 MB in the beginning and 234.4 MB in the end (delta: 31.5 MB). Free memory was 140.3 MB in the beginning and 161.8 MB in the end (delta: -21.5 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 135]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 134, overapproximation of someUnaryDOUBLEoperation at line 14, overapproximation of bitwiseAnd at line 32, overapproximation of someBinaryArithmeticFLOAToperation at line 35, overapproximation of bitwiseXor at line 31. Possible FailurePath: [L12-L15] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [\old(one_fmod)=8589934603, \old(Zero_fmod)=8589934595, \old(Zero_fmod)=8589934599, one_fmod=1, Zero_fmod={3:0}] [L126] float x = __VERIFIER_nondet_float(); VAL [__VERIFIER_nondet_float()=8589934598, one_fmod=1, x=8589934598, Zero_fmod={3:0}] [L127] float y = -1.0f / 0.0f; VAL [one_fmod=1, x=8589934598, Zero_fmod={3:0}] [L129] CALL isfinite_float(x) VAL [\old(x)=8589934598, one_fmod=1, Zero_fmod={3:0}] [L109] __int32_t ix; VAL [\old(x)=8589934598, one_fmod=1, x=8589934598, Zero_fmod={3:0}] [L111] ieee_float_shape_type gf_u; VAL [\old(x)=8589934598, gf_u={5:0}, one_fmod=1, x=8589934598, Zero_fmod={3:0}] [L112] gf_u.value = (x) VAL [\old(x)=8589934598, gf_u={5:0}, one_fmod=1, x=8589934598, Zero_fmod={3:0}] [L113] EXPR gf_u.word VAL [\old(x)=8589934598, gf_u={5:0}, gf_u.word=8589934590, one_fmod=1, x=8589934598, Zero_fmod={3:0}] [L113] (ix) = gf_u.word VAL [\old(x)=8589934598, gf_u={5:0}, gf_u.word=8589934590, ix=-2, one_fmod=1, x=8589934598, Zero_fmod={3:0}] [L115] ix &= 0x7fffffff VAL [\old(x)=8589934598, one_fmod=1, x=8589934598, Zero_fmod={3:0}] [L116] return (((ix) < 0x7f800000L)); VAL [\old(x)=8589934598, \result=1, ix=2139095039, one_fmod=1, x=8589934598, Zero_fmod={3:0}] [L129] RET isfinite_float(x) VAL [isfinite_float(x)=1, one_fmod=1, x=8589934598, Zero_fmod={3:0}] [L129] COND TRUE isfinite_float(x) VAL [isfinite_float(x)=1, one_fmod=1, x=8589934598, Zero_fmod={3:0}] [L131] CALL, EXPR fmod_float(x, y) VAL [\old(x)=8589934598, \old(y)=8589934591, one_fmod=1, Zero_fmod={3:0}] [L18] __int32_t n, hx, hy, hz, ix, iy, sx, i; VAL [\old(x)=8589934598, \old(y)=8589934591, one_fmod=1, x=8589934598, y=8589934591, Zero_fmod={3:0}] [L21] ieee_float_shape_type gf_u; VAL [\old(x)=8589934598, \old(y)=8589934591, gf_u={6:0}, one_fmod=1, x=8589934598, y=8589934591, Zero_fmod={3:0}] [L22] gf_u.value = (x) VAL [\old(x)=8589934598, \old(y)=8589934591, gf_u={6:0}, one_fmod=1, x=8589934598, y=8589934591, Zero_fmod={3:0}] [L23] EXPR gf_u.word VAL [\old(x)=8589934598, \old(y)=8589934591, gf_u={6:0}, gf_u.word=8589934589, one_fmod=1, x=8589934598, y=8589934591, Zero_fmod={3:0}] [L23] (hx) = gf_u.word VAL [(hx) = gf_u.word=8589934604, \old(x)=8589934598, \old(y)=8589934591, gf_u={6:0}, gf_u.word=8589934589, hx=-3, one_fmod=1, x=8589934598, y=8589934591, Zero_fmod={3:0}] [L26] ieee_float_shape_type gf_u; VAL [\old(x)=8589934598, \old(y)=8589934591, gf_u={2:0}, hx=-3, one_fmod=1, x=8589934598, y=8589934591, Zero_fmod={3:0}] [L27] gf_u.value = (y) VAL [\old(x)=8589934598, \old(y)=8589934591, gf_u={2:0}, hx=-3, one_fmod=1, x=8589934598, y=8589934591, Zero_fmod={3:0}] [L28] EXPR gf_u.word VAL [\old(x)=8589934598, \old(y)=8589934591, gf_u={2:0}, gf_u.word=4294967292, hx=-3, one_fmod=1, x=8589934598, y=8589934591, Zero_fmod={3:0}] [L28] (hy) = gf_u.word VAL [\old(x)=8589934598, \old(y)=8589934591, gf_u={2:0}, gf_u.word=4294967292, hx=-3, hy=-4, one_fmod=1, x=8589934598, y=8589934591, Zero_fmod={3:0}] [L30] sx = hx & 0x80000000 VAL [\old(x)=8589934598, \old(y)=8589934591, hx=-3, hy=-4, one_fmod=1, sx=-1, x=8589934598, y=8589934591, Zero_fmod={3:0}] [L31] hx ^= sx VAL [\old(x)=8589934598, \old(y)=8589934591, hy=-4, one_fmod=1, sx=-1, x=8589934598, y=8589934591, Zero_fmod={3:0}] [L32] hy &= 0x7fffffff VAL [\old(x)=8589934598, \old(y)=8589934591, one_fmod=1, sx=-1, x=8589934598, y=8589934591, Zero_fmod={3:0}] [L34] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) VAL [\old(x)=8589934598, \old(y)=8589934591, hx=2139095040, hy=0, one_fmod=1, sx=-1, x=8589934598, y=8589934591, Zero_fmod={3:0}] [L35] return (x * y) / (x * y); VAL [\old(x)=8589934598, \old(y)=8589934591, hx=2139095040, hy=0, one_fmod=1, sx=-1, x=8589934598, y=8589934591, Zero_fmod={3:0}] [L131] RET, EXPR fmod_float(x, y) VAL [fmod_float(x, y)=8589934601, one_fmod=1, x=8589934598, y=8589934591, Zero_fmod={3:0}] [L131] float res = fmod_float(x, y); VAL [fmod_float(x, y)=8589934601, one_fmod=1, res=8589934601, x=8589934598, y=8589934591, Zero_fmod={3:0}] [L134] COND TRUE res != x VAL [one_fmod=1, res=8589934601, x=8589934598, y=8589934591, Zero_fmod={3:0}] [L135] __VERIFIER_error() VAL [one_fmod=1, res=8589934601, x=8589934598, y=8589934591, Zero_fmod={3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 162 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 174 SDtfs, 31 SDslu, 128 SDs, 0 SdLazy, 190 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=162occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 125 NumberOfCodeBlocks, 125 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 48 ConstructedInterpolants, 0 QuantifiedInterpolants, 4464 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...