/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 13:01:17,302 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 13:01:17,304 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 13:01:17,321 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 13:01:17,321 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 13:01:17,323 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 13:01:17,325 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 13:01:17,334 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 13:01:17,337 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 13:01:17,340 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 13:01:17,342 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 13:01:17,344 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 13:01:17,344 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 13:01:17,346 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 13:01:17,348 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 13:01:17,350 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 13:01:17,351 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 13:01:17,353 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 13:01:17,354 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 13:01:17,358 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 13:01:17,363 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 13:01:17,366 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 13:01:17,367 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 13:01:17,367 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 13:01:17,369 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-07 13:01:17,378 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 13:01:17,379 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 13:01:17,380 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 13:01:17,381 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 13:01:17,389 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 13:01:17,389 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 13:01:17,390 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 13:01:17,391 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 13:01:17,391 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 13:01:17,391 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 13:01:17,391 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 13:01:17,392 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 13:01:17,392 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 13:01:17,392 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 13:01:17,392 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 13:01:17,392 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 13:01:17,392 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 13:01:17,393 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 13:01:17,393 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 13:01:17,393 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 13:01:17,393 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 13:01:17,393 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 13:01:17,394 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 13:01:17,394 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 13:01:17,394 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 13:01:17,394 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 13:01:17,394 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-07 13:01:17,684 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 13:01:17,703 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 13:01:17,706 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 13:01:17,707 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 13:01:17,708 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 13:01:17,708 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c [2020-07-07 13:01:17,769 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5dc376293/f71b3ffc71fd4dc5933e7c32b5e65678/FLAGeb1b2f11e [2020-07-07 13:01:18,188 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 13:01:18,189 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c [2020-07-07 13:01:18,196 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5dc376293/f71b3ffc71fd4dc5933e7c32b5e65678/FLAGeb1b2f11e [2020-07-07 13:01:18,589 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5dc376293/f71b3ffc71fd4dc5933e7c32b5e65678 [2020-07-07 13:01:18,597 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 13:01:18,599 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 13:01:18,600 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 13:01:18,600 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 13:01:18,604 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 13:01:18,605 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:01:18" (1/1) ... [2020-07-07 13:01:18,608 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50229795 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:01:18, skipping insertion in model container [2020-07-07 13:01:18,608 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:01:18" (1/1) ... [2020-07-07 13:01:18,616 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 13:01:18,653 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 13:01:18,868 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:01:18,873 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 13:01:19,009 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:01:19,031 INFO L208 MainTranslator]: Completed translation [2020-07-07 13:01:19,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:01:19 WrapperNode [2020-07-07 13:01:19,032 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 13:01:19,033 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 13:01:19,033 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 13:01:19,033 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 13:01:19,042 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:01:19" (1/1) ... [2020-07-07 13:01:19,043 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:01:19" (1/1) ... [2020-07-07 13:01:19,054 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:01:19" (1/1) ... [2020-07-07 13:01:19,054 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:01:19" (1/1) ... [2020-07-07 13:01:19,072 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:01:19" (1/1) ... [2020-07-07 13:01:19,094 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:01:19" (1/1) ... [2020-07-07 13:01:19,096 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:01:19" (1/1) ... [2020-07-07 13:01:19,102 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 13:01:19,102 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 13:01:19,102 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 13:01:19,102 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 13:01:19,110 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:01:19" (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 13:01:19,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 13:01:19,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 13:01:19,165 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-07-07 13:01:19,166 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-07-07 13:01:19,166 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2020-07-07 13:01:19,167 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 13:01:19,167 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 13:01:19,167 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-07-07 13:01:19,167 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-07-07 13:01:19,167 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-07-07 13:01:19,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-07 13:01:19,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-07 13:01:19,169 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-07 13:01:19,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-07 13:01:19,169 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-07 13:01:19,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-07 13:01:19,169 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2020-07-07 13:01:19,169 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 13:01:19,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 13:01:19,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-07-07 13:01:19,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 13:01:19,908 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 13:01:19,909 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-07-07 13:01:19,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:01:19 BoogieIcfgContainer [2020-07-07 13:01:19,915 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 13:01:19,916 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 13:01:19,917 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 13:01:19,920 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 13:01:19,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 01:01:18" (1/3) ... [2020-07-07 13:01:19,921 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65669282 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:01:19, skipping insertion in model container [2020-07-07 13:01:19,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:01:19" (2/3) ... [2020-07-07 13:01:19,921 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65669282 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:01:19, skipping insertion in model container [2020-07-07 13:01:19,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:01:19" (3/3) ... [2020-07-07 13:01:19,923 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131a.c [2020-07-07 13:01:19,934 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 13:01:19,942 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 13:01:19,956 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 13:01:19,976 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 13:01:19,976 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 13:01:19,976 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-07 13:01:19,976 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 13:01:19,977 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 13:01:19,977 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 13:01:19,977 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 13:01:19,977 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 13:01:19,997 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2020-07-07 13:01:20,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-07-07 13:01:20,010 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:01:20,011 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] [2020-07-07 13:01:20,012 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:01:20,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:01:20,017 INFO L82 PathProgramCache]: Analyzing trace with hash 1076720203, now seen corresponding path program 1 times [2020-07-07 13:01:20,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:01:20,024 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1867105051] [2020-07-07 13:01:20,024 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:01:20,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:01:20,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:01:20,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:01:20,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:01:20,268 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 13:01:20,268 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:01:20,272 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1867105051] [2020-07-07 13:01:20,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:01:20,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 13:01:20,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323464911] [2020-07-07 13:01:20,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 13:01:20,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:01:20,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 13:01:20,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 13:01:20,300 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 4 states. [2020-07-07 13:01:20,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:01:20,868 INFO L93 Difference]: Finished difference Result 414 states and 503 transitions. [2020-07-07 13:01:20,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-07 13:01:20,870 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-07-07 13:01:20,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:01:20,883 INFO L225 Difference]: With dead ends: 414 [2020-07-07 13:01:20,883 INFO L226 Difference]: Without dead ends: 209 [2020-07-07 13:01:20,889 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 [2020-07-07 13:01:20,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-07-07 13:01:20,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2020-07-07 13:01:20,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-07-07 13:01:20,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 235 transitions. [2020-07-07 13:01:20,952 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 235 transitions. Word has length 51 [2020-07-07 13:01:20,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:01:20,953 INFO L479 AbstractCegarLoop]: Abstraction has 209 states and 235 transitions. [2020-07-07 13:01:20,953 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 13:01:20,953 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 235 transitions. [2020-07-07 13:01:20,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-07-07 13:01:20,956 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:01:20,957 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:01:20,957 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 13:01:20,957 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:01:20,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:01:20,958 INFO L82 PathProgramCache]: Analyzing trace with hash -484158952, now seen corresponding path program 1 times [2020-07-07 13:01:20,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:01:20,959 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1857501741] [2020-07-07 13:01:20,959 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:01:21,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 13:01:21,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 13:01:21,314 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:01:21,315 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-07 13:01:21,315 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-07 13:01:21,318 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 13:01:21,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 01:01:21 BoogieIcfgContainer [2020-07-07 13:01:21,344 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 13:01:21,347 INFO L168 Benchmark]: Toolchain (without parser) took 2747.86 ms. Allocated memory was 138.9 MB in the beginning and 237.0 MB in the end (delta: 98.0 MB). Free memory was 103.1 MB in the beginning and 128.5 MB in the end (delta: -25.5 MB). Peak memory consumption was 72.5 MB. Max. memory is 7.1 GB. [2020-07-07 13:01:21,348 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 138.9 MB. Free memory was 122.4 MB in the beginning and 122.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-07 13:01:21,349 INFO L168 Benchmark]: CACSL2BoogieTranslator took 432.84 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 102.8 MB in the beginning and 178.7 MB in the end (delta: -75.8 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. [2020-07-07 13:01:21,350 INFO L168 Benchmark]: Boogie Preprocessor took 69.07 ms. Allocated memory is still 203.4 MB. Free memory was 178.7 MB in the beginning and 175.9 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-07-07 13:01:21,351 INFO L168 Benchmark]: RCFGBuilder took 813.22 ms. Allocated memory is still 203.4 MB. Free memory was 175.9 MB in the beginning and 128.0 MB in the end (delta: 47.8 MB). Peak memory consumption was 47.8 MB. Max. memory is 7.1 GB. [2020-07-07 13:01:21,352 INFO L168 Benchmark]: TraceAbstraction took 1428.08 ms. Allocated memory was 203.4 MB in the beginning and 237.0 MB in the end (delta: 33.6 MB). Free memory was 128.0 MB in the beginning and 128.5 MB in the end (delta: -496.5 kB). Peak memory consumption was 33.1 MB. Max. memory is 7.1 GB. [2020-07-07 13:01:21,356 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 138.9 MB. Free memory was 122.4 MB in the beginning and 122.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 432.84 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 102.8 MB in the beginning and 178.7 MB in the end (delta: -75.8 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 69.07 ms. Allocated memory is still 203.4 MB. Free memory was 178.7 MB in the beginning and 175.9 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 813.22 ms. Allocated memory is still 203.4 MB. Free memory was 175.9 MB in the beginning and 128.0 MB in the end (delta: 47.8 MB). Peak memory consumption was 47.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1428.08 ms. Allocated memory was 203.4 MB in the beginning and 237.0 MB in the end (delta: 33.6 MB). Free memory was 128.0 MB in the beginning and 128.5 MB in the end (delta: -496.5 kB). Peak memory consumption was 33.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 189]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 44, overapproximation of someUnaryDOUBLEoperation at line 20, overapproximation of someBinaryArithmeticDOUBLEoperation at line 45, overapproximation of bitwiseAnd at line 41, overapproximation of someBinaryDOUBLEComparisonOperation at line 188, overapproximation of bitwiseXor at line 40. Possible FailurePath: [L18-L21] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L180] double y = 1.0 / 0.0; [L181] double x = __VERIFIER_nondet_double(); [L183] CALL isfinite_double(x) [L164] __int32_t hx; [L166] ieee_double_shape_type gh_u; [L167] gh_u.value = (x) [L168] EXPR gh_u.parts.msw [L168] (hx) = gh_u.parts.msw [L170] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); [L183] RET isfinite_double(x) [L183] COND TRUE isfinite_double(x) [L185] CALL, EXPR fmod_double(x, y) [L24] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L25] __uint32_t lx, ly, lz; [L28] ieee_double_shape_type ew_u; [L29] ew_u.value = (x) [L30] EXPR ew_u.parts.msw [L30] (hx) = ew_u.parts.msw [L31] EXPR ew_u.parts.lsw [L31] (lx) = ew_u.parts.lsw [L34] ieee_double_shape_type ew_u; [L35] ew_u.value = (y) [L36] EXPR ew_u.parts.msw [L36] (hy) = ew_u.parts.msw [L37] EXPR ew_u.parts.lsw [L37] (ly) = ew_u.parts.lsw [L39] sx = hx & 0x80000000 [L40] hx ^= sx [L41] hy &= 0x7fffffff [L43-L44] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L45] return (x * y) / (x * y); [L185] RET, EXPR fmod_double(x, y) [L185] double res = fmod_double(x, y); [L188] COND TRUE res != x [L189] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 220 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 239 SDtfs, 37 SDslu, 182 SDs, 0 SdLazy, 260 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s 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=216occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...