/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/interpolation.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 10:15:32,204 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 10:15:32,208 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 10:15:32,236 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 10:15:32,236 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 10:15:32,238 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 10:15:32,239 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 10:15:32,241 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 10:15:32,243 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 10:15:32,244 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 10:15:32,245 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 10:15:32,246 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 10:15:32,246 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 10:15:32,247 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 10:15:32,248 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 10:15:32,249 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 10:15:32,250 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 10:15:32,251 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 10:15:32,253 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 10:15:32,255 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 10:15:32,256 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 10:15:32,257 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 10:15:32,259 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 10:15:32,260 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 10:15:32,262 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 10:15:32,263 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 10:15:32,263 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 10:15:32,264 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 10:15:32,264 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 10:15:32,265 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 10:15:32,265 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 10:15:32,266 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 10:15:32,267 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 10:15:32,268 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 10:15:32,269 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 10:15:32,269 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 10:15:32,270 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 10:15:32,270 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 10:15:32,270 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 10:15:32,271 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 10:15:32,272 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 10:15:32,273 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 10:15:32,300 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 10:15:32,300 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 10:15:32,302 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 10:15:32,302 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 10:15:32,303 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 10:15:32,303 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 10:15:32,303 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 10:15:32,304 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 10:15:32,304 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 10:15:32,304 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 10:15:32,304 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 10:15:32,304 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 10:15:32,305 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 10:15:32,305 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 10:15:32,305 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 10:15:32,305 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 10:15:32,305 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 10:15:32,306 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 10:15:32,306 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 10:15:32,306 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 10:15:32,306 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 10:15:32,306 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 10:15:32,307 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 10:15:32,307 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 10:15:32,307 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 10:15:32,307 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 10:15:32,307 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 10:15:32,308 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 10:15:32,308 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 10:15:32,308 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 10:15:32,646 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 10:15:32,667 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 10:15:32,673 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 10:15:32,675 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 10:15:32,676 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 10:15:32,677 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/interpolation.c [2020-10-13 10:15:32,760 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5ab68d31b/29db2788c5854ba48b410f3ba8929f95/FLAG350fb1a59 [2020-10-13 10:15:33,332 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 10:15:33,333 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-benchs/interpolation.c [2020-10-13 10:15:33,344 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5ab68d31b/29db2788c5854ba48b410f3ba8929f95/FLAG350fb1a59 [2020-10-13 10:15:33,611 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5ab68d31b/29db2788c5854ba48b410f3ba8929f95 [2020-10-13 10:15:33,622 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 10:15:33,624 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 10:15:33,626 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 10:15:33,626 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 10:15:33,631 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 10:15:33,632 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:15:33" (1/1) ... [2020-10-13 10:15:33,636 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f39ff7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:15:33, skipping insertion in model container [2020-10-13 10:15:33,637 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:15:33" (1/1) ... [2020-10-13 10:15:33,650 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 10:15:33,676 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 10:15:34,006 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:15:34,014 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 10:15:34,041 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:15:34,067 INFO L208 MainTranslator]: Completed translation [2020-10-13 10:15:34,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:15:34 WrapperNode [2020-10-13 10:15:34,068 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 10:15:34,069 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 10:15:34,069 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 10:15:34,069 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 10:15:34,192 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:15:34" (1/1) ... [2020-10-13 10:15:34,195 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:15:34" (1/1) ... [2020-10-13 10:15:34,222 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:15:34" (1/1) ... [2020-10-13 10:15:34,222 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:15:34" (1/1) ... [2020-10-13 10:15:34,243 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:15:34" (1/1) ... [2020-10-13 10:15:34,249 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:15:34" (1/1) ... [2020-10-13 10:15:34,251 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:15:34" (1/1) ... [2020-10-13 10:15:34,254 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 10:15:34,254 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 10:15:34,255 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 10:15:34,255 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 10:15:34,256 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:15:34" (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 10:15:34,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 10:15:34,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 10:15:34,329 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 10:15:34,329 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-13 10:15:34,329 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 10:15:34,329 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 10:15:34,330 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-13 10:15:34,330 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 10:15:34,330 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 10:15:34,330 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-13 10:15:34,331 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 10:15:34,331 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 10:15:34,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-13 10:15:34,331 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-13 10:15:34,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 10:15:34,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 10:15:34,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 10:15:34,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-13 10:15:34,715 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 10:15:34,715 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 10:15:34,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:15:34 BoogieIcfgContainer [2020-10-13 10:15:34,721 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 10:15:34,723 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 10:15:34,724 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 10:15:34,728 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 10:15:34,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:15:33" (1/3) ... [2020-10-13 10:15:34,729 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45c38ca5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:15:34, skipping insertion in model container [2020-10-13 10:15:34,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:15:34" (2/3) ... [2020-10-13 10:15:34,730 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45c38ca5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:15:34, skipping insertion in model container [2020-10-13 10:15:34,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:15:34" (3/3) ... [2020-10-13 10:15:34,746 INFO L109 eAbstractionObserver]: Analyzing ICFG interpolation.c [2020-10-13 10:15:34,761 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 10:15:34,769 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 10:15:34,786 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 10:15:34,814 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 10:15:34,815 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 10:15:34,815 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 10:15:34,815 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 10:15:34,815 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 10:15:34,815 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 10:15:34,816 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 10:15:34,816 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 10:15:34,836 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-10-13 10:15:34,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-13 10:15:34,843 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:15:34,844 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:15:34,844 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:15:34,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:15:34,850 INFO L82 PathProgramCache]: Analyzing trace with hash 1150650107, now seen corresponding path program 1 times [2020-10-13 10:15:34,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:15:34,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [741728452] [2020-10-13 10:15:34,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:15:34,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:15:35,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:15:35,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:15:35,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:15:35,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-13 10:15:35,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:15:35,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-10-13 10:15:35,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:15:35,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:15:35,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 10:15:35,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:15:35,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 10:15:35,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:15:35,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:15:35,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:15:35,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:15:35,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:15:35,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:15:35,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 10:15:35,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:15:35,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:15:35,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:15:35,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:15:35,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:15:35,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 10:15:35,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:15:35,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:15:35,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:15:35,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:15:35,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:15:35,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 10:15:35,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:15:35,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:15:35,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 10:15:35,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:15:35,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:15:35,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:15:35,356 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [741728452] [2020-10-13 10:15:35,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:15:35,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 10:15:35,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211380430] [2020-10-13 10:15:35,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-13 10:15:35,373 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:15:35,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-13 10:15:35,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 10:15:35,393 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 3 states. [2020-10-13 10:15:35,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:15:35,503 INFO L93 Difference]: Finished difference Result 48 states and 57 transitions. [2020-10-13 10:15:35,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 10:15:35,506 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-10-13 10:15:35,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:15:35,517 INFO L225 Difference]: With dead ends: 48 [2020-10-13 10:15:35,518 INFO L226 Difference]: Without dead ends: 22 [2020-10-13 10:15:35,523 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 10:15:35,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-10-13 10:15:35,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-10-13 10:15:35,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-13 10:15:35,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2020-10-13 10:15:35,580 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 19 [2020-10-13 10:15:35,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:15:35,581 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2020-10-13 10:15:35,581 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-13 10:15:35,581 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2020-10-13 10:15:35,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-13 10:15:35,582 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:15:35,583 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:15:35,583 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 10:15:35,584 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:15:35,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:15:35,587 INFO L82 PathProgramCache]: Analyzing trace with hash 442702436, now seen corresponding path program 1 times [2020-10-13 10:15:35,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:15:35,588 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [373923967] [2020-10-13 10:15:35,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:15:35,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:15:35,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:15:35,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:15:35,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-13 10:15:35,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:15:35,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-13 10:15:35,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:15:35,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:15:35,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 10:15:35,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 10:15:35,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:15:35,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:15:35,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:15:35,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:15:35,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:15:35,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:15:35,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:15:35,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 10:15:35,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:15:35,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:15:35,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:15:35,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:15:35,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:15:35,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 10:15:35,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:15:35,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:15:35,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:15:35,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:15:35,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:15:35,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 10:15:35,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:15:35,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:15:35,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:15:35,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:15:35,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:15:35,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:15:35,816 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [373923967] [2020-10-13 10:15:35,817 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:15:35,817 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 10:15:35,817 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048103886] [2020-10-13 10:15:35,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 10:15:35,820 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:15:35,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 10:15:35,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:15:35,822 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 4 states. [2020-10-13 10:15:35,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:15:35,910 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2020-10-13 10:15:35,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 10:15:35,911 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-10-13 10:15:35,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:15:35,916 INFO L225 Difference]: With dead ends: 33 [2020-10-13 10:15:35,916 INFO L226 Difference]: Without dead ends: 27 [2020-10-13 10:15:35,918 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:15:35,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-13 10:15:35,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2020-10-13 10:15:35,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-13 10:15:35,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2020-10-13 10:15:35,929 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 19 [2020-10-13 10:15:35,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:15:35,930 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2020-10-13 10:15:35,930 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 10:15:35,930 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2020-10-13 10:15:35,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-13 10:15:35,932 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:15:35,932 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 10:15:35,932 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 10:15:35,933 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:15:35,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:15:35,933 INFO L82 PathProgramCache]: Analyzing trace with hash -1930052589, now seen corresponding path program 1 times [2020-10-13 10:15:35,934 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:15:35,935 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [143949025] [2020-10-13 10:15:35,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:15:35,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-13 10:15:35,956 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-13 10:15:35,957 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-13 10:15:35,964 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 10:15:35,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 10:15:35 BoogieIcfgContainer [2020-10-13 10:15:35,992 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-13 10:15:35,996 INFO L168 Benchmark]: Toolchain (without parser) took 2369.94 ms. Allocated memory was 145.8 MB in the beginning and 202.9 MB in the end (delta: 57.1 MB). Free memory was 101.5 MB in the beginning and 102.1 MB in the end (delta: -604.4 kB). Peak memory consumption was 56.5 MB. Max. memory is 7.1 GB. [2020-10-13 10:15:35,997 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 145.8 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-13 10:15:35,998 INFO L168 Benchmark]: CACSL2BoogieTranslator took 442.63 ms. Allocated memory is still 145.8 MB. Free memory was 101.1 MB in the beginning and 89.5 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB. [2020-10-13 10:15:36,000 INFO L168 Benchmark]: Boogie Preprocessor took 185.12 ms. Allocated memory was 145.8 MB in the beginning and 202.9 MB in the end (delta: 57.1 MB). Free memory was 89.5 MB in the beginning and 180.1 MB in the end (delta: -90.5 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-10-13 10:15:36,001 INFO L168 Benchmark]: RCFGBuilder took 466.67 ms. Allocated memory is still 202.9 MB. Free memory was 180.1 MB in the beginning and 164.7 MB in the end (delta: 15.4 MB). Peak memory consumption was 15.4 MB. Max. memory is 7.1 GB. [2020-10-13 10:15:36,002 INFO L168 Benchmark]: TraceAbstraction took 1268.73 ms. Allocated memory is still 202.9 MB. Free memory was 164.0 MB in the beginning and 102.1 MB in the end (delta: 61.9 MB). Peak memory consumption was 61.9 MB. Max. memory is 7.1 GB. [2020-10-13 10:15:36,007 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 145.8 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 442.63 ms. Allocated memory is still 145.8 MB. Free memory was 101.1 MB in the beginning and 89.5 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 185.12 ms. Allocated memory was 145.8 MB in the beginning and 202.9 MB in the end (delta: 57.1 MB). Free memory was 89.5 MB in the beginning and 180.1 MB in the end (delta: -90.5 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 466.67 ms. Allocated memory is still 202.9 MB. Free memory was 180.1 MB in the beginning and 164.7 MB in the end (delta: 15.4 MB). Peak memory consumption was 15.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1268.73 ms. Allocated memory is still 202.9 MB. Free memory was 164.0 MB in the beginning and 102.1 MB in the end (delta: 61.9 MB). Peak memory consumption was 61.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 7]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 24, overapproximation of to_real at line 13, overapproximation of someBinaryArithmeticFLOAToperation at line 22. Possible FailurePath: [L11] int i; [L12] float z, t; [L13] float min[] = { 5, 10, 12, 30, 150 }; [L14] float max[] = { 10, 12, 30, 150, 300 }; [L16] t = __VERIFIER_nondet_float() [L17] EXPR min[0] [L17] EXPR t >= min[0] && t <= max[sizeof(max) / sizeof(max[0]) - 1] [L17] EXPR max[sizeof(max) / sizeof(max[0]) - 1] [L17] EXPR t >= min[0] && t <= max[sizeof(max) / sizeof(max[0]) - 1] [L17] CALL assume_abort_if_not(t >= min[0] && t <= max[sizeof(max) / sizeof(max[0]) - 1]) [L5] COND FALSE !(!cond) [L17] RET assume_abort_if_not(t >= min[0] && t <= max[sizeof(max) / sizeof(max[0]) - 1]) [L19] i = 0 [L19] COND TRUE i < sizeof(min) / sizeof(min[0]) [L20] EXPR max[i] [L20] COND TRUE t <= max[i] [L22] EXPR min[i] [L22] EXPR max[i] [L22] EXPR min[i] [L22] z = (t - min[i]) / (max[i] - min[i]) [L24] CALL __VERIFIER_assert(z >= 0.f && z <= 1.f) [L7] COND TRUE !(cond) [L7] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.1s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 49 SDtfs, 18 SDslu, 18 SDs, 0 SdLazy, 44 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred 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, 2 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 58 NumberOfCodeBlocks, 58 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 1008 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...