/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_1131b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 16:10:50,223 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 16:10:50,227 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 16:10:50,253 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 16:10:50,253 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 16:10:50,254 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 16:10:50,256 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 16:10:50,258 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 16:10:50,259 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 16:10:50,260 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 16:10:50,261 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 16:10:50,263 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 16:10:50,263 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 16:10:50,264 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 16:10:50,265 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 16:10:50,268 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 16:10:50,270 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 16:10:50,271 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 16:10:50,275 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 16:10:50,278 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 16:10:50,281 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 16:10:50,283 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 16:10:50,284 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 16:10:50,285 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 16:10:50,291 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 16:10:50,291 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 16:10:50,291 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 16:10:50,295 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 16:10:50,296 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 16:10:50,297 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 16:10:50,297 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 16:10:50,300 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 16:10:50,301 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 16:10:50,302 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 16:10:50,303 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 16:10:50,303 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 16:10:50,304 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 16:10:50,304 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 16:10:50,305 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 16:10:50,308 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 16:10:50,309 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 16:10:50,310 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 16:10:50,341 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 16:10:50,341 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 16:10:50,345 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 16:10:50,345 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 16:10:50,345 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 16:10:50,345 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 16:10:50,346 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 16:10:50,347 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 16:10:50,347 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 16:10:50,347 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 16:10:50,347 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 16:10:50,348 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 16:10:50,348 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 16:10:50,348 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 16:10:50,348 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 16:10:50,348 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 16:10:50,350 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 16:10:50,350 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 16:10:50,350 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 16:10:50,351 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 16:10:50,351 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 16:10:50,351 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 16:10:50,351 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 16:10:50,789 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 16:10:50,806 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 16:10:50,810 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 16:10:50,812 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 16:10:50,812 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 16:10:50,813 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c [2020-09-04 16:10:50,901 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7eac07171/c14f82fd07f84127a954fc1bb7e4945f/FLAG3a6f58285 [2020-09-04 16:10:51,483 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 16:10:51,484 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c [2020-09-04 16:10:51,498 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7eac07171/c14f82fd07f84127a954fc1bb7e4945f/FLAG3a6f58285 [2020-09-04 16:10:51,809 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7eac07171/c14f82fd07f84127a954fc1bb7e4945f [2020-09-04 16:10:51,822 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 16:10:51,823 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 16:10:51,825 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 16:10:51,825 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 16:10:51,831 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 16:10:51,832 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 04:10:51" (1/1) ... [2020-09-04 16:10:51,837 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cb5471e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:51, skipping insertion in model container [2020-09-04 16:10:51,837 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 04:10:51" (1/1) ... [2020-09-04 16:10:51,846 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 16:10:51,883 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 16:10:52,340 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 16:10:52,346 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 16:10:52,405 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 16:10:52,433 INFO L208 MainTranslator]: Completed translation [2020-09-04 16:10:52,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:52 WrapperNode [2020-09-04 16:10:52,434 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 16:10:52,435 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 16:10:52,435 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 16:10:52,435 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 16:10:52,450 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:52" (1/1) ... [2020-09-04 16:10:52,450 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:52" (1/1) ... [2020-09-04 16:10:52,465 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:52" (1/1) ... [2020-09-04 16:10:52,466 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:52" (1/1) ... [2020-09-04 16:10:52,486 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:52" (1/1) ... [2020-09-04 16:10:52,498 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:52" (1/1) ... [2020-09-04 16:10:52,502 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:52" (1/1) ... [2020-09-04 16:10:52,507 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 16:10:52,508 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 16:10:52,508 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 16:10:52,508 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 16:10:52,512 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:52" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 16:10:52,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 16:10:52,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 16:10:52,594 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-09-04 16:10:52,594 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2020-09-04 16:10:52,594 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 16:10:52,595 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 16:10:52,595 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-09-04 16:10:52,595 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-09-04 16:10:52,595 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 16:10:52,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-04 16:10:52,596 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 16:10:52,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 16:10:52,596 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-04 16:10:52,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 16:10:52,596 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2020-09-04 16:10:52,597 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 16:10:52,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 16:10:52,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-09-04 16:10:52,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 16:10:53,313 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 16:10:53,313 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-09-04 16:10:53,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 04:10:53 BoogieIcfgContainer [2020-09-04 16:10:53,321 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 16:10:53,322 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 16:10:53,323 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 16:10:53,326 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 16:10:53,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 04:10:51" (1/3) ... [2020-09-04 16:10:53,328 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e5b9af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 04:10:53, skipping insertion in model container [2020-09-04 16:10:53,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:52" (2/3) ... [2020-09-04 16:10:53,329 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e5b9af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 04:10:53, skipping insertion in model container [2020-09-04 16:10:53,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 04:10:53" (3/3) ... [2020-09-04 16:10:53,331 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131b.c [2020-09-04 16:10:53,344 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 16:10:53,356 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 16:10:53,379 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 16:10:53,409 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 16:10:53,409 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 16:10:53,409 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 16:10:53,410 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 16:10:53,410 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 16:10:53,410 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 16:10:53,410 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 16:10:53,410 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 16:10:53,435 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2020-09-04 16:10:53,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-04 16:10:53,452 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:10:53,453 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] [2020-09-04 16:10:53,453 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:10:53,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:10:53,462 INFO L82 PathProgramCache]: Analyzing trace with hash -1577177176, now seen corresponding path program 1 times [2020-09-04 16:10:53,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:10:53,474 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1102514268] [2020-09-04 16:10:53,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:10:53,543 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:10:53,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:10:53,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:10:53,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:10:53,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-04 16:10:53,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:10:53,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-04 16:10:53,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:10:53,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:10:53,781 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1102514268] [2020-09-04 16:10:53,783 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:10:53,784 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 16:10:53,784 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614608125] [2020-09-04 16:10:53,791 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 16:10:53,791 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:10:53,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 16:10:53,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 16:10:53,812 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 4 states. [2020-09-04 16:10:54,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:10:54,437 INFO L93 Difference]: Finished difference Result 414 states and 503 transitions. [2020-09-04 16:10:54,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-04 16:10:54,439 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-09-04 16:10:54,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:10:54,456 INFO L225 Difference]: With dead ends: 414 [2020-09-04 16:10:54,456 INFO L226 Difference]: Without dead ends: 209 [2020-09-04 16:10:54,463 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-04 16:10:54,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-09-04 16:10:54,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2020-09-04 16:10:54,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-09-04 16:10:54,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 235 transitions. [2020-09-04 16:10:54,538 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 235 transitions. Word has length 51 [2020-09-04 16:10:54,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:10:54,538 INFO L479 AbstractCegarLoop]: Abstraction has 209 states and 235 transitions. [2020-09-04 16:10:54,539 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 16:10:54,539 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 235 transitions. [2020-09-04 16:10:54,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-09-04 16:10:54,542 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:10:54,543 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] [2020-09-04 16:10:54,543 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 16:10:54,543 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:10:54,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:10:54,544 INFO L82 PathProgramCache]: Analyzing trace with hash -16125544, now seen corresponding path program 1 times [2020-09-04 16:10:54,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:10:54,544 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1436163781] [2020-09-04 16:10:54,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:10:54,547 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:10:54,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 16:10:54,668 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 16:10:54,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 16:10:54,818 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 16:10:54,867 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 16:10:54,867 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 16:10:54,869 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 16:10:54,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 04:10:54 BoogieIcfgContainer [2020-09-04 16:10:54,920 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 16:10:54,926 INFO L168 Benchmark]: Toolchain (without parser) took 3099.06 ms. Allocated memory was 138.4 MB in the beginning and 234.4 MB in the end (delta: 95.9 MB). Free memory was 100.1 MB in the beginning and 133.1 MB in the end (delta: -33.1 MB). Peak memory consumption was 62.9 MB. Max. memory is 7.1 GB. [2020-09-04 16:10:54,927 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 138.4 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 16:10:54,930 INFO L168 Benchmark]: CACSL2BoogieTranslator took 609.93 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 99.8 MB in the beginning and 176.8 MB in the end (delta: -77.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. [2020-09-04 16:10:54,933 INFO L168 Benchmark]: Boogie Preprocessor took 72.43 ms. Allocated memory is still 202.4 MB. Free memory was 176.8 MB in the beginning and 174.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-09-04 16:10:54,935 INFO L168 Benchmark]: RCFGBuilder took 813.36 ms. Allocated memory is still 202.4 MB. Free memory was 174.3 MB in the beginning and 127.6 MB in the end (delta: 46.7 MB). Peak memory consumption was 46.7 MB. Max. memory is 7.1 GB. [2020-09-04 16:10:54,937 INFO L168 Benchmark]: TraceAbstraction took 1597.96 ms. Allocated memory was 202.4 MB in the beginning and 234.4 MB in the end (delta: 32.0 MB). Free memory was 127.0 MB in the beginning and 133.1 MB in the end (delta: -6.2 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. [2020-09-04 16:10:54,943 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 138.4 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 609.93 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 99.8 MB in the beginning and 176.8 MB in the end (delta: -77.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 72.43 ms. Allocated memory is still 202.4 MB. Free memory was 176.8 MB in the beginning and 174.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 813.36 ms. Allocated memory is still 202.4 MB. Free memory was 174.3 MB in the beginning and 127.6 MB in the end (delta: 46.7 MB). Peak memory consumption was 46.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1597.96 ms. Allocated memory was 202.4 MB in the beginning and 234.4 MB in the end (delta: 32.0 MB). Free memory was 127.0 MB in the beginning and 133.1 MB in the end (delta: -6.2 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 186]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 41, overapproximation of someUnaryDOUBLEoperation at line 17, overapproximation of someBinaryArithmeticDOUBLEoperation at line 42, overapproximation of bitwiseAnd at line 38, overapproximation of someBinaryDOUBLEComparisonOperation at line 185, overapproximation of bitwiseXor at line 37. Possible FailurePath: [L15-L18] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L177] double y = -1.0 / 0.0; [L178] double x = __VERIFIER_nondet_double(); [L180] CALL isfinite_double(x) [L161] __int32_t hx; [L163] ieee_double_shape_type gh_u; [L164] gh_u.value = (x) [L165] EXPR gh_u.parts.msw [L165] (hx) = gh_u.parts.msw [L167] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); [L180] RET isfinite_double(x) [L180] COND TRUE isfinite_double(x) [L182] CALL, EXPR fmod_double(x, y) [L21] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L22] __uint32_t lx, ly, lz; [L25] ieee_double_shape_type ew_u; [L26] ew_u.value = (x) [L27] EXPR ew_u.parts.msw [L27] (hx) = ew_u.parts.msw [L28] EXPR ew_u.parts.lsw [L28] (lx) = ew_u.parts.lsw [L31] ieee_double_shape_type ew_u; [L32] ew_u.value = (y) [L33] EXPR ew_u.parts.msw [L33] (hy) = ew_u.parts.msw [L34] EXPR ew_u.parts.lsw [L34] (ly) = ew_u.parts.lsw [L36] sx = hx & 0x80000000 [L37] hx ^= sx [L38] hy &= 0x7fffffff [L40-L41] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L42] return (x * y) / (x * y); [L182] RET, EXPR fmod_double(x, y) [L182] double res = fmod_double(x, y); [L185] COND TRUE res != x [L186] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 216 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.4s, 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, 0.1s 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...