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/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_0270b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-10 01:43:54,136 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-10 01:43:54,138 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-10 01:43:54,150 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-10 01:43:54,150 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-10 01:43:54,151 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-10 01:43:54,153 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-10 01:43:54,155 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-10 01:43:54,157 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-10 01:43:54,158 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-10 01:43:54,159 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-10 01:43:54,160 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-10 01:43:54,161 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-10 01:43:54,162 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-10 01:43:54,163 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-10 01:43:54,164 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-10 01:43:54,165 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-10 01:43:54,166 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-10 01:43:54,168 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-10 01:43:54,170 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-10 01:43:54,171 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-10 01:43:54,173 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-10 01:43:54,174 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-10 01:43:54,175 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-10 01:43:54,177 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-10 01:43:54,180 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-10 01:43:54,181 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-10 01:43:54,182 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-10 01:43:54,183 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-10 01:43:54,184 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-10 01:43:54,184 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-10 01:43:54,185 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-10 01:43:54,185 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-10 01:43:54,185 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-10 01:43:54,186 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-10 01:43:54,187 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-10 01:43:54,188 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-10 01:43:54,203 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-10 01:43:54,203 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-10 01:43:54,203 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-10 01:43:54,204 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-10 01:43:54,204 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-10 01:43:54,205 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-10 01:43:54,205 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-10 01:43:54,205 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-10 01:43:54,205 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-10 01:43:54,205 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-10 01:43:54,206 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-10 01:43:54,206 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-10 01:43:54,207 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-10 01:43:54,207 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-10 01:43:54,207 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-10 01:43:54,207 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-10 01:43:54,207 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-10 01:43:54,208 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-10 01:43:54,208 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-10 01:43:54,208 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-10 01:43:54,208 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-10 01:43:54,209 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-10 01:43:54,209 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-10 01:43:54,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-10 01:43:54,209 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-10 01:43:54,209 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-10 01:43:54,210 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-10 01:43:54,210 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-10 01:43:54,210 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-10 01:43:54,210 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-10 01:43:54,239 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-10 01:43:54,251 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-10 01:43:54,255 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-10 01:43:54,257 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-10 01:43:54,257 INFO L275 PluginConnector]: CDTParser initialized [2019-09-10 01:43:54,258 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0270b.c [2019-09-10 01:43:54,319 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6b7b030e/c10fa4d6409d466c9f8029f72b43b8b6/FLAGbe43983a4 [2019-09-10 01:43:54,797 INFO L306 CDTParser]: Found 1 translation units. [2019-09-10 01:43:54,798 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_0270b.c [2019-09-10 01:43:54,813 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6b7b030e/c10fa4d6409d466c9f8029f72b43b8b6/FLAGbe43983a4 [2019-09-10 01:43:55,159 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6b7b030e/c10fa4d6409d466c9f8029f72b43b8b6 [2019-09-10 01:43:55,170 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-10 01:43:55,172 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-10 01:43:55,174 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-10 01:43:55,175 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-10 01:43:55,179 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-10 01:43:55,180 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 01:43:55" (1/1) ... [2019-09-10 01:43:55,183 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36ebf3f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:43:55, skipping insertion in model container [2019-09-10 01:43:55,184 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 01:43:55" (1/1) ... [2019-09-10 01:43:55,191 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-10 01:43:55,218 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-10 01:43:55,478 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 01:43:55,484 INFO L188 MainTranslator]: Completed pre-run [2019-09-10 01:43:55,625 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 01:43:55,650 INFO L192 MainTranslator]: Completed translation [2019-09-10 01:43:55,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:43:55 WrapperNode [2019-09-10 01:43:55,650 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-10 01:43:55,651 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-10 01:43:55,651 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-10 01:43:55,651 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-10 01:43:55,662 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:43:55" (1/1) ... [2019-09-10 01:43:55,663 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:43:55" (1/1) ... [2019-09-10 01:43:55,680 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:43:55" (1/1) ... [2019-09-10 01:43:55,681 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:43:55" (1/1) ... [2019-09-10 01:43:55,721 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:43:55" (1/1) ... [2019-09-10 01:43:55,729 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:43:55" (1/1) ... [2019-09-10 01:43:55,732 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:43:55" (1/1) ... [2019-09-10 01:43:55,737 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-10 01:43:55,737 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-10 01:43:55,737 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-10 01:43:55,737 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-10 01:43:55,738 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:43:55" (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 [2019-09-10 01:43:55,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-10 01:43:55,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-10 01:43:55,808 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2019-09-10 01:43:55,808 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf [2019-09-10 01:43:55,808 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2019-09-10 01:43:55,808 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_asinf [2019-09-10 01:43:55,808 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-10 01:43:55,808 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-10 01:43:55,809 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2019-09-10 01:43:55,809 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2019-09-10 01:43:55,809 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-10 01:43:55,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-09-10 01:43:55,809 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-10 01:43:55,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-10 01:43:55,810 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf [2019-09-10 01:43:55,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-10 01:43:55,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-09-10 01:43:55,810 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2019-09-10 01:43:55,810 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_asinf [2019-09-10 01:43:55,811 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-10 01:43:55,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-10 01:43:55,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-10 01:43:56,487 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-10 01:43:56,487 INFO L283 CfgBuilder]: Removed 18 assume(true) statements. [2019-09-10 01:43:56,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 01:43:56 BoogieIcfgContainer [2019-09-10 01:43:56,489 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-10 01:43:56,490 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-10 01:43:56,490 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-10 01:43:56,493 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-10 01:43:56,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 01:43:55" (1/3) ... [2019-09-10 01:43:56,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ec7aaef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 01:43:56, skipping insertion in model container [2019-09-10 01:43:56,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:43:55" (2/3) ... [2019-09-10 01:43:56,495 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ec7aaef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 01:43:56, skipping insertion in model container [2019-09-10 01:43:56,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 01:43:56" (3/3) ... [2019-09-10 01:43:56,497 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_0270b.c [2019-09-10 01:43:56,508 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-10 01:43:56,517 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-10 01:43:56,534 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-10 01:43:56,566 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-10 01:43:56,566 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-10 01:43:56,566 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-10 01:43:56,566 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-10 01:43:56,567 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-10 01:43:56,567 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-10 01:43:56,567 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-10 01:43:56,567 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-10 01:43:56,582 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states. [2019-09-10 01:43:56,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-09-10 01:43:56,591 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:43:56,592 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:43:56,594 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:43:56,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:43:56,599 INFO L82 PathProgramCache]: Analyzing trace with hash -1496010423, now seen corresponding path program 1 times [2019-09-10 01:43:56,601 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:43:56,642 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:43:56,643 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:43:56,643 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:43:56,643 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:43:56,714 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-10 01:43:56,715 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-10 01:43:56,715 INFO L170 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-10 01:43:56,744 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:43:56,744 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2019-09-10 01:43:56,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:43:56,797 INFO L195 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2019-09-10 01:43:56,800 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-09-10 01:43:56,800 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 01:43:56,801 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-10 01:43:56,830 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:43:56,831 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 01:43:56,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:43:56,890 INFO L256 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 18 conjunts are in the unsatisfiable core [2019-09-10 01:43:56,897 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 01:43:57,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 01:43:57,017 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 01:43:57,027 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 01:43:57,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (3)] Exception during sending of exit command (exit): Broken pipe [2019-09-10 01:43:57,459 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:43:57,459 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8, 7] imperfect sequences [] total 11 [2019-09-10 01:43:57,459 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:43:57,465 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-10 01:43:57,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-10 01:43:57,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2019-09-10 01:43:57,478 INFO L87 Difference]: Start difference. First operand 80 states. Second operand 8 states. [2019-09-10 01:43:57,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:43:57,727 INFO L93 Difference]: Finished difference Result 79 states and 98 transitions. [2019-09-10 01:43:57,728 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-10 01:43:57,729 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2019-09-10 01:43:57,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:43:57,744 INFO L225 Difference]: With dead ends: 79 [2019-09-10 01:43:57,745 INFO L226 Difference]: Without dead ends: 75 [2019-09-10 01:43:57,748 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2019-09-10 01:43:57,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2019-09-10 01:43:57,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 72. [2019-09-10 01:43:57,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2019-09-10 01:43:57,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 90 transitions. [2019-09-10 01:43:57,796 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 90 transitions. Word has length 17 [2019-09-10 01:43:57,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:43:57,797 INFO L475 AbstractCegarLoop]: Abstraction has 72 states and 90 transitions. [2019-09-10 01:43:57,797 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-10 01:43:57,797 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 90 transitions. [2019-09-10 01:43:57,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-09-10 01:43:57,798 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:43:57,799 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:43:57,799 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:43:57,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:43:57,799 INFO L82 PathProgramCache]: Analyzing trace with hash 767314748, now seen corresponding path program 1 times [2019-09-10 01:43:57,800 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:43:57,801 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:43:57,801 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:43:57,801 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:43:57,801 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:43:57,829 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Infinite/NaN value at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.(TraceCheck.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructCraig(TraceCheckConstructor.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:183) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseTaipanRefinementStrategy.getTraceCheck(BaseTaipanRefinementStrategy.java:215) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:453) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:371) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Infinite/NaN value at de.uni_freiburg.informatik.ultimate.logic.Theory.constant(Theory.java:416) at de.uni_freiburg.informatik.ultimate.logic.Rational.toTerm(Rational.java:918) at de.uni_freiburg.informatik.ultimate.smtinterpol.convert.SMTAffineTerm.parseConstant(SMTAffineTerm.java:140) at de.uni_freiburg.informatik.ultimate.smtinterpol.convert.SMTAffineTerm.(SMTAffineTerm.java:86) at de.uni_freiburg.informatik.ultimate.smtinterpol.convert.Clausifier.createEqualityProxy(Clausifier.java:1432) at de.uni_freiburg.informatik.ultimate.smtinterpol.convert.Clausifier$CollectLiterals.perform(Clausifier.java:712) at de.uni_freiburg.informatik.ultimate.smtinterpol.convert.Clausifier.run(Clausifier.java:1669) at de.uni_freiburg.informatik.ultimate.smtinterpol.convert.Clausifier.addFormula(Clausifier.java:1733) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.assertTerm(SMTInterpol.java:644) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.managedscript.ManagedScript.assertTerm(ManagedScript.java:136) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.AnnotateAndAssertCodeBlocks.annotateAndAssertTerm(AnnotateAndAssertCodeBlocks.java:193) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.AnnotateAndAssertCodeBlocks.annotateAndAssertNonCall(AnnotateAndAssertCodeBlocks.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.AnnotateAndAsserter.buildAnnotatedSsaAndAssertTerms(AnnotateAndAsserter.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.checkTrace(TraceCheck.java:293) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.(TraceCheck.java:214) ... 26 more [2019-09-10 01:43:57,837 INFO L168 Benchmark]: Toolchain (without parser) took 2664.32 ms. Allocated memory was 135.3 MB in the beginning and 231.2 MB in the end (delta: 95.9 MB). Free memory was 91.1 MB in the beginning and 170.4 MB in the end (delta: -79.2 MB). Peak memory consumption was 16.7 MB. Max. memory is 7.1 GB. [2019-09-10 01:43:57,838 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 135.3 MB. Free memory was 109.8 MB in the beginning and 109.5 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-10 01:43:57,839 INFO L168 Benchmark]: CACSL2BoogieTranslator took 476.26 ms. Allocated memory was 135.3 MB in the beginning and 201.9 MB in the end (delta: 66.6 MB). Free memory was 90.9 MB in the beginning and 176.0 MB in the end (delta: -85.1 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. [2019-09-10 01:43:57,840 INFO L168 Benchmark]: Boogie Preprocessor took 85.76 ms. Allocated memory is still 201.9 MB. Free memory was 176.0 MB in the beginning and 173.1 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2019-09-10 01:43:57,841 INFO L168 Benchmark]: RCFGBuilder took 751.82 ms. Allocated memory is still 201.9 MB. Free memory was 173.1 MB in the beginning and 137.3 MB in the end (delta: 35.8 MB). Peak memory consumption was 35.8 MB. Max. memory is 7.1 GB. [2019-09-10 01:43:57,841 INFO L168 Benchmark]: TraceAbstraction took 1344.43 ms. Allocated memory was 201.9 MB in the beginning and 231.2 MB in the end (delta: 29.4 MB). Free memory was 136.7 MB in the beginning and 170.4 MB in the end (delta: -33.7 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-09-10 01:43:57,846 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 135.3 MB. Free memory was 109.8 MB in the beginning and 109.5 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 476.26 ms. Allocated memory was 135.3 MB in the beginning and 201.9 MB in the end (delta: 66.6 MB). Free memory was 90.9 MB in the beginning and 176.0 MB in the end (delta: -85.1 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 85.76 ms. Allocated memory is still 201.9 MB. Free memory was 176.0 MB in the beginning and 173.1 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 751.82 ms. Allocated memory is still 201.9 MB. Free memory was 173.1 MB in the beginning and 137.3 MB in the end (delta: 35.8 MB). Peak memory consumption was 35.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1344.43 ms. Allocated memory was 201.9 MB in the beginning and 231.2 MB in the end (delta: 29.4 MB). Free memory was 136.7 MB in the beginning and 170.4 MB in the end (delta: -33.7 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Infinite/NaN value de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Infinite/NaN value: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.(TraceCheck.java:239) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...