/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-benchs/rlim_invariant.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 10:15:57,253 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 10:15:57,256 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 10:15:57,293 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 10:15:57,293 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 10:15:57,300 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 10:15:57,302 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 10:15:57,306 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 10:15:57,308 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 10:15:57,310 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 10:15:57,311 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 10:15:57,312 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 10:15:57,312 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 10:15:57,315 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 10:15:57,317 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 10:15:57,318 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 10:15:57,319 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 10:15:57,321 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 10:15:57,322 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 10:15:57,330 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 10:15:57,332 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 10:15:57,332 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 10:15:57,333 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 10:15:57,334 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 10:15:57,347 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 10:15:57,350 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 10:15:57,350 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 10:15:57,351 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 10:15:57,352 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 10:15:57,352 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 10:15:57,353 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 10:15:57,355 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 10:15:57,356 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 10:15:57,356 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 10:15:57,357 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 10:15:57,358 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 10:15:57,362 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 10:15:57,362 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 10:15:57,363 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 10:15:57,364 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 10:15:57,365 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 10:15:57,366 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 10:15:57,403 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 10:15:57,403 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 10:15:57,405 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 10:15:57,405 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 10:15:57,405 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 10:15:57,406 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 10:15:57,406 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 10:15:57,406 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 10:15:57,406 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 10:15:57,407 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 10:15:57,407 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 10:15:57,408 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 10:15:57,408 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 10:15:57,408 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 10:15:57,408 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 10:15:57,409 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 10:15:57,409 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 10:15:57,409 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 10:15:57,409 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 10:15:57,409 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 10:15:57,410 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 10:15:57,410 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 10:15:57,410 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 10:15:57,410 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 10:15:57,411 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 10:15:57,411 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 10:15:57,411 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 10:15:57,411 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 10:15:57,411 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 10:15:57,411 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 10:15:57,679 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 10:15:57,690 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 10:15:57,694 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 10:15:57,695 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 10:15:57,695 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 10:15:57,696 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/rlim_invariant.c.v+lhb-reducer.c [2020-10-13 10:15:57,757 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6b88417f9/38d0597c51f04055877da0075c43e035/FLAG34a47a563 [2020-10-13 10:15:58,211 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 10:15:58,212 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-benchs/rlim_invariant.c.v+lhb-reducer.c [2020-10-13 10:15:58,220 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6b88417f9/38d0597c51f04055877da0075c43e035/FLAG34a47a563 [2020-10-13 10:15:58,583 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6b88417f9/38d0597c51f04055877da0075c43e035 [2020-10-13 10:15:58,593 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 10:15:58,595 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 10:15:58,596 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 10:15:58,597 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 10:15:58,600 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 10:15:58,601 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:15:58" (1/1) ... [2020-10-13 10:15:58,604 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ac45341 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:15:58, skipping insertion in model container [2020-10-13 10:15:58,604 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:15:58" (1/1) ... [2020-10-13 10:15:58,611 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 10:15:58,644 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 10:15:58,865 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:15:58,870 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 10:15:58,904 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:15:58,917 INFO L208 MainTranslator]: Completed translation [2020-10-13 10:15:58,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:15:58 WrapperNode [2020-10-13 10:15:58,918 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 10:15:58,919 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 10:15:58,919 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 10:15:58,919 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 10:15:59,003 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:15:58" (1/1) ... [2020-10-13 10:15:59,005 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:15:58" (1/1) ... [2020-10-13 10:15:59,012 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:15:58" (1/1) ... [2020-10-13 10:15:59,013 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:15:58" (1/1) ... [2020-10-13 10:15:59,019 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:15:58" (1/1) ... [2020-10-13 10:15:59,029 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:15:58" (1/1) ... [2020-10-13 10:15:59,030 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:15:58" (1/1) ... [2020-10-13 10:15:59,035 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 10:15:59,035 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 10:15:59,035 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 10:15:59,035 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 10:15:59,036 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:15:58" (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 [2020-10-13 10:15:59,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 10:15:59,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 10:15:59,094 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 10:15:59,094 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 10:15:59,094 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 10:15:59,094 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-13 10:15:59,094 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 10:15:59,095 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 10:15:59,095 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-13 10:15:59,095 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 10:15:59,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 10:15:59,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 10:15:59,399 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 10:15:59,399 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 10:15:59,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:15:59 BoogieIcfgContainer [2020-10-13 10:15:59,404 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 10:15:59,405 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 10:15:59,405 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 10:15:59,408 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 10:15:59,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:15:58" (1/3) ... [2020-10-13 10:15:59,409 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4797fbb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:15:59, skipping insertion in model container [2020-10-13 10:15:59,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:15:58" (2/3) ... [2020-10-13 10:15:59,410 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4797fbb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:15:59, skipping insertion in model container [2020-10-13 10:15:59,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:15:59" (3/3) ... [2020-10-13 10:15:59,412 INFO L109 eAbstractionObserver]: Analyzing ICFG rlim_invariant.c.v+lhb-reducer.c [2020-10-13 10:15:59,422 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 10:15:59,429 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-13 10:15:59,442 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-13 10:15:59,468 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 10:15:59,468 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 10:15:59,468 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 10:15:59,468 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 10:15:59,469 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 10:15:59,469 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 10:15:59,469 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 10:15:59,469 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 10:15:59,489 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2020-10-13 10:15:59,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-13 10:15:59,495 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:15:59,496 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] [2020-10-13 10:15:59,497 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:15:59,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:15:59,502 INFO L82 PathProgramCache]: Analyzing trace with hash -706487313, now seen corresponding path program 1 times [2020-10-13 10:15:59,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:15:59,510 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1082492579] [2020-10-13 10:15:59,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:15:59,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-13 10:15:59,618 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-13 10:15:59,619 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-13 10:15:59,622 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 10:15:59,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 10:15:59 BoogieIcfgContainer [2020-10-13 10:15:59,638 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-13 10:15:59,640 INFO L168 Benchmark]: Toolchain (without parser) took 1044.64 ms. Allocated memory was 141.6 MB in the beginning and 203.4 MB in the end (delta: 61.9 MB). Free memory was 104.4 MB in the beginning and 147.7 MB in the end (delta: -43.3 MB). Peak memory consumption was 18.6 MB. Max. memory is 7.1 GB. [2020-10-13 10:15:59,641 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-13 10:15:59,642 INFO L168 Benchmark]: CACSL2BoogieTranslator took 322.11 ms. Allocated memory is still 141.6 MB. Free memory was 104.0 MB in the beginning and 92.4 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB. [2020-10-13 10:15:59,643 INFO L168 Benchmark]: Boogie Preprocessor took 115.88 ms. Allocated memory was 141.6 MB in the beginning and 203.4 MB in the end (delta: 61.9 MB). Free memory was 92.4 MB in the beginning and 180.9 MB in the end (delta: -88.5 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. [2020-10-13 10:15:59,644 INFO L168 Benchmark]: RCFGBuilder took 368.63 ms. Allocated memory is still 203.4 MB. Free memory was 180.9 MB in the beginning and 160.3 MB in the end (delta: 20.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. [2020-10-13 10:15:59,645 INFO L168 Benchmark]: TraceAbstraction took 232.96 ms. Allocated memory is still 203.4 MB. Free memory was 159.6 MB in the beginning and 147.7 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 7.1 GB. [2020-10-13 10:15:59,649 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 322.11 ms. Allocated memory is still 141.6 MB. Free memory was 104.0 MB in the beginning and 92.4 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 115.88 ms. Allocated memory was 141.6 MB in the beginning and 203.4 MB in the end (delta: 61.9 MB). Free memory was 92.4 MB in the beginning and 180.9 MB in the end (delta: -88.5 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 368.63 ms. Allocated memory is still 203.4 MB. Free memory was 180.9 MB in the beginning and 160.3 MB in the end (delta: 20.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 232.96 ms. Allocated memory is still 203.4 MB. Free memory was 159.6 MB in the beginning and 147.7 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 65]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 47, overapproximation of someBinaryDOUBLEComparisonOperation at line 52, overapproximation of to_real at line 22, overapproximation of someBinaryArithmeticFLOAToperation at line 49. Possible FailurePath: [L1] int __return_main; [L10] int __tmp_160_0; [L11] int __tmp_160_1; [L12] int __tmp_160_2; [L13] int __return_165; [L16] float main__X; [L17] float main__Y; [L18] float main__S; [L19] float main__R; [L20] float main__D; [L21] int main__i; [L22] main__Y = 0 [L23] main__i = 0 [L24] COND TRUE main__i < 100000 [L26] main__X = __VERIFIER_nondet_float() [L27] main__D = __VERIFIER_nondet_float() [L28] int main____CPAchecker_TMP_0; [L29] COND TRUE main__X >= -128.0 [L31] COND TRUE main__X <= 128.0 [L33] main____CPAchecker_TMP_0 = 1 [L34] COND TRUE main____CPAchecker_TMP_0 != 0 [L36] int main____CPAchecker_TMP_1; [L37] COND TRUE main__D >= 0.0 [L39] COND TRUE main__D <= 16.0 [L41] main____CPAchecker_TMP_1 = 1 [L42] COND TRUE main____CPAchecker_TMP_1 != 0 [L44] main__S = main__Y [L45] main__Y = main__X [L46] main__R = main__X - main__S [L47] COND TRUE main__R <= (-main__D) [L49] main__Y = main__S - main__D [L51] int main____CPAchecker_TMP_2; [L52] COND FALSE !(main__Y >= -129.0) [L203] main____CPAchecker_TMP_2 = 0 [L59] int __tmp_1; [L60] __tmp_1 = main____CPAchecker_TMP_2 [L61] int __VERIFIER_assert__cond; [L62] __VERIFIER_assert__cond = __tmp_1 [L63] COND TRUE __VERIFIER_assert__cond == 0 [L65] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 51 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...