/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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_1091.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-24 00:34:13,672 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 00:34:13,676 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 00:34:13,746 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-24 00:34:13,774 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 00:34:13,777 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 00:34:13,779 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 00:34:13,781 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 00:34:13,782 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 00:34:13,783 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 00:34:13,794 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 00:34:13,799 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 00:34:13,800 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 00:34:13,804 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 00:34:13,806 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 00:34:13,807 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 00:34:13,809 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-24 00:34:13,821 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-24 00:34:13,833 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 00:34:13,833 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 00:34:13,835 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 00:34:13,835 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 00:34:13,835 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 00:34:13,836 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 00:34:13,836 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 00:34:13,836 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 00:34:13,836 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 00:34:13,836 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 00:34:13,837 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 00:34:13,837 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 00:34:13,837 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 00:34:13,837 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 00:34:13,838 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 00:34:13,838 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-24 00:34:13,838 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 00:34:13,838 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 00:34:13,838 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 00:34:13,839 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 00:34:13,839 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-24 00:34:13,839 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 00:34:13,839 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-10-24 00:34:14,238 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 00:34:14,271 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 00:34:14,274 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 00:34:14,276 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 00:34:14,277 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 00:34:14,278 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1091.c [2020-10-24 00:34:14,363 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f84193b1a/178a6bbace624baa97acf4c756d57a95/FLAG65d7aa7a7 [2020-10-24 00:34:15,010 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 00:34:15,011 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1091.c [2020-10-24 00:34:15,020 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f84193b1a/178a6bbace624baa97acf4c756d57a95/FLAG65d7aa7a7 [2020-10-24 00:34:15,353 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f84193b1a/178a6bbace624baa97acf4c756d57a95 [2020-10-24 00:34:15,357 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 00:34:15,364 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-24 00:34:15,366 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 00:34:15,366 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 00:34:15,370 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 00:34:15,371 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:34:15" (1/1) ... [2020-10-24 00:34:15,374 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15773e99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:34:15, skipping insertion in model container [2020-10-24 00:34:15,375 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:34:15" (1/1) ... [2020-10-24 00:34:15,383 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 00:34:15,400 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 00:34:15,574 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 00:34:15,585 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 00:34:15,613 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 00:34:15,631 INFO L208 MainTranslator]: Completed translation [2020-10-24 00:34:15,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:34:15 WrapperNode [2020-10-24 00:34:15,631 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 00:34:15,633 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 00:34:15,633 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 00:34:15,633 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 00:34:15,648 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:34:15" (1/1) ... [2020-10-24 00:34:15,648 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:34:15" (1/1) ... [2020-10-24 00:34:15,658 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:34:15" (1/1) ... [2020-10-24 00:34:15,658 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:34:15" (1/1) ... [2020-10-24 00:34:15,669 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:34:15" (1/1) ... [2020-10-24 00:34:15,675 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:34:15" (1/1) ... [2020-10-24 00:34:15,677 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:34:15" (1/1) ... [2020-10-24 00:34:15,680 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 00:34:15,681 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 00:34:15,681 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 00:34:15,681 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 00:34:15,682 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:34:15" (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 [2020-10-24 00:34:15,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-24 00:34:15,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 00:34:15,765 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-24 00:34:15,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_float [2020-10-24 00:34:15,766 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2020-10-24 00:34:15,766 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-24 00:34:15,766 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-24 00:34:15,766 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-24 00:34:15,767 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-24 00:34:15,767 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 00:34:15,767 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_float [2020-10-24 00:34:15,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-24 00:34:15,767 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-24 00:34:15,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 00:34:15,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-24 00:34:15,768 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-24 00:34:15,768 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2020-10-24 00:34:15,768 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-24 00:34:15,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-24 00:34:15,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 00:34:15,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 00:34:16,274 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 00:34:16,275 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-24 00:34:16,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:34:16 BoogieIcfgContainer [2020-10-24 00:34:16,277 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 00:34:16,279 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 00:34:16,279 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 00:34:16,283 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 00:34:16,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 12:34:15" (1/3) ... [2020-10-24 00:34:16,284 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51c09b1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:34:16, skipping insertion in model container [2020-10-24 00:34:16,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:34:15" (2/3) ... [2020-10-24 00:34:16,285 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51c09b1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:34:16, skipping insertion in model container [2020-10-24 00:34:16,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:34:16" (3/3) ... [2020-10-24 00:34:16,287 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1091.c [2020-10-24 00:34:16,301 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-24 00:34:16,306 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 00:34:16,320 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 00:34:16,344 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 00:34:16,344 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 00:34:16,344 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-24 00:34:16,344 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 00:34:16,345 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 00:34:16,345 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 00:34:16,345 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 00:34:16,345 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 00:34:16,362 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states. [2020-10-24 00:34:16,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-24 00:34:16,374 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:34:16,375 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] [2020-10-24 00:34:16,375 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:34:16,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:34:16,382 INFO L82 PathProgramCache]: Analyzing trace with hash -512391107, now seen corresponding path program 1 times [2020-10-24 00:34:16,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:34:16,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [575491779] [2020-10-24 00:34:16,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:34:16,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:34:16,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:34:16,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:34:16,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 00:34:16,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:34:16,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-24 00:34:16,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:34:16,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 00:34:16,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [575491779] [2020-10-24 00:34:16,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 00:34:16,736 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-24 00:34:16,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706062704] [2020-10-24 00:34:16,742 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-24 00:34:16,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:34:16,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-24 00:34:16,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-24 00:34:16,759 INFO L87 Difference]: Start difference. First operand 84 states. Second operand 4 states. [2020-10-24 00:34:17,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:34:17,246 INFO L93 Difference]: Finished difference Result 145 states and 172 transitions. [2020-10-24 00:34:17,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-24 00:34:17,248 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2020-10-24 00:34:17,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:34:17,258 INFO L225 Difference]: With dead ends: 145 [2020-10-24 00:34:17,259 INFO L226 Difference]: Without dead ends: 75 [2020-10-24 00:34:17,263 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-24 00:34:17,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-24 00:34:17,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2020-10-24 00:34:17,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-24 00:34:17,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 83 transitions. [2020-10-24 00:34:17,362 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 83 transitions. Word has length 40 [2020-10-24 00:34:17,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:34:17,363 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 83 transitions. [2020-10-24 00:34:17,364 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-24 00:34:17,364 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 83 transitions. [2020-10-24 00:34:17,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-24 00:34:17,367 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:34:17,367 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] [2020-10-24 00:34:17,368 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 00:34:17,368 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:34:17,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:34:17,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1560428397, now seen corresponding path program 1 times [2020-10-24 00:34:17,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:34:17,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1100911868] [2020-10-24 00:34:17,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:34:17,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 00:34:17,495 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 00:34:17,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 00:34:17,567 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 00:34:17,606 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-24 00:34:17,606 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 00:34:17,607 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 00:34:17,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 12:34:17 BoogieIcfgContainer [2020-10-24 00:34:17,657 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 00:34:17,660 INFO L168 Benchmark]: Toolchain (without parser) took 2299.00 ms. Allocated memory is still 154.1 MB. Free memory was 131.1 MB in the beginning and 117.4 MB in the end (delta: 13.7 MB). Peak memory consumption was 14.4 MB. Max. memory is 8.0 GB. [2020-10-24 00:34:17,660 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 154.1 MB. Free memory is still 127.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-24 00:34:17,662 INFO L168 Benchmark]: CACSL2BoogieTranslator took 266.01 ms. Allocated memory is still 154.1 MB. Free memory was 130.6 MB in the beginning and 119.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-24 00:34:17,663 INFO L168 Benchmark]: Boogie Preprocessor took 47.09 ms. Allocated memory is still 154.1 MB. Free memory was 119.9 MB in the beginning and 118.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-24 00:34:17,664 INFO L168 Benchmark]: RCFGBuilder took 596.46 ms. Allocated memory is still 154.1 MB. Free memory was 118.0 MB in the beginning and 132.1 MB in the end (delta: -14.1 MB). Peak memory consumption was 19.7 MB. Max. memory is 8.0 GB. [2020-10-24 00:34:17,665 INFO L168 Benchmark]: TraceAbstraction took 1377.77 ms. Allocated memory is still 154.1 MB. Free memory was 131.5 MB in the beginning and 117.4 MB in the end (delta: 14.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-10-24 00:34:17,669 INFO L339 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 154.1 MB. Free memory is still 127.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 266.01 ms. Allocated memory is still 154.1 MB. Free memory was 130.6 MB in the beginning and 119.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 47.09 ms. Allocated memory is still 154.1 MB. Free memory was 119.9 MB in the beginning and 118.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 596.46 ms. Allocated memory is still 154.1 MB. Free memory was 118.0 MB in the beginning and 132.1 MB in the end (delta: -14.1 MB). Peak memory consumption was 19.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1377.77 ms. Allocated memory is still 154.1 MB. Free memory was 131.5 MB in the beginning and 117.4 MB in the end (delta: 14.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 59, overapproximation of someBinaryArithmeticFLOAToperation at line 46, overapproximation of bitwiseAnd at line 23. Possible FailurePath: [L13] static const float huge_ceil = 1.0e30; VAL [\old(huge_ceil)=1000000000000000000000000000003, huge_ceil=1000000000000000000000000000000] [L68] float x = 0.0f / 0.0f; VAL [huge_ceil=1000000000000000000000000000000] [L70] CALL, EXPR ceil_float(x) VAL [\old(x)=1000000000000000000000000000013, huge_ceil=1000000000000000000000000000000] [L16] __int32_t i0, j0; VAL [\old(x)=1000000000000000000000000000013, huge_ceil=1000000000000000000000000000000, x=1000000000000000000000000000013] [L17] __uint32_t i, ix; VAL [\old(x)=1000000000000000000000000000013, huge_ceil=1000000000000000000000000000000, x=1000000000000000000000000000013] [L19] ieee_float_shape_type gf_u; VAL [\old(x)=1000000000000000000000000000013, gf_u={3:0}, huge_ceil=1000000000000000000000000000000, x=1000000000000000000000000000013] [L20] gf_u.value = (x) VAL [\old(x)=1000000000000000000000000000013, gf_u={3:0}, huge_ceil=1000000000000000000000000000000, x=1000000000000000000000000000013] [L21] EXPR gf_u.word VAL [\old(x)=1000000000000000000000000000013, gf_u={3:0}, gf_u.word=0, huge_ceil=1000000000000000000000000000000, x=1000000000000000000000000000013] [L21] (i0) = gf_u.word VAL [(i0) = gf_u.word=1000000000000000000000000000011, \old(x)=1000000000000000000000000000013, gf_u={3:0}, gf_u.word=0, huge_ceil=1000000000000000000000000000000, i0=0, x=1000000000000000000000000000013] [L23] ix = (i0 & 0x7fffffff) VAL [\old(x)=1000000000000000000000000000013, huge_ceil=1000000000000000000000000000000, i0=0, x=1000000000000000000000000000013] [L24] j0 = (ix >> 23) - 0x7f VAL [\old(x)=1000000000000000000000000000013, huge_ceil=1000000000000000000000000000000, i=-36028792723996673, i0=0, j0=384, x=1000000000000000000000000000013] [L25] COND FALSE !(j0 < 23) VAL [\old(x)=1000000000000000000000000000013, huge_ceil=1000000000000000000000000000000, i=-36028792723996673, i0=0, j0=384, x=1000000000000000000000000000013] [L45] COND TRUE !((ix) < 0x7f800000L) VAL [\old(x)=1000000000000000000000000000013, huge_ceil=1000000000000000000000000000000, i=-36028792723996673, i0=0, j0=384, x=1000000000000000000000000000013] [L46] return x + x; VAL [\old(x)=1000000000000000000000000000013, huge_ceil=1000000000000000000000000000000, i=-36028792723996673, i0=0, j0=384, x=1000000000000000000000000000013] [L70] RET, EXPR ceil_float(x) VAL [ceil_float(x)=1000000000000000000000000000006, huge_ceil=1000000000000000000000000000000, x=1000000000000000000000000000013] [L70] float res = ceil_float(x); VAL [ceil_float(x)=1000000000000000000000000000006, huge_ceil=1000000000000000000000000000000, res=1000000000000000000000000000006, x=1000000000000000000000000000013] [L73] CALL, EXPR isnan_float(res) VAL [\old(x)=1000000000000000000000000000006, huge_ceil=1000000000000000000000000000000] [L59] return x != x; VAL [\old(x)=1000000000000000000000000000006, \result=0, huge_ceil=1000000000000000000000000000000, x=1000000000000000000000000000006] [L73] RET, EXPR isnan_float(res) VAL [huge_ceil=1000000000000000000000000000000, isnan_float(res)=0, res=1000000000000000000000000000006, x=1000000000000000000000000000013] [L73] COND TRUE !isnan_float(res) VAL [huge_ceil=1000000000000000000000000000000, isnan_float(res)=0, res=1000000000000000000000000000006, x=1000000000000000000000000000013] [L74] CALL reach_error() VAL [huge_ceil=1000000000000000000000000000000] [L3] __assert_fail("0", "float_req_bl_1091.c", 3, "reach_error") VAL [huge_ceil=1000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 84 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 87 SDtfs, 21 SDslu, 57 SDs, 0 SdLazy, 92 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=84occurred 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, 0.2s InterpolantComputationTime, 89 NumberOfCodeBlocks, 89 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 39 ConstructedInterpolants, 0 QuantifiedInterpolants, 3276 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...