/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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=DEEPEST --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 language data_model -i ../../../trunk/examples/svcomp/float-benchs/interpolation2.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 19:39:34,208 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 19:39:34,212 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 19:39:34,273 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 19:39:34,274 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 19:39:34,280 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 19:39:34,282 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 19:39:34,286 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 19:39:34,289 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 19:39:34,297 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 19:39:34,298 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 19:39:34,300 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 19:39:34,300 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 19:39:34,303 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 19:39:34,307 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 19:39:34,309 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 19:39:34,310 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 19:39:34,314 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 19:39:34,321 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 19:39:34,325 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 19:39:34,330 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 19:39:34,331 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 19:39:34,333 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 19:39:34,333 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 19:39:34,343 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 19:39:34,343 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 19:39:34,343 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 19:39:34,368 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 19:39:34,369 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 19:39:34,370 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 19:39:34,370 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 19:39:34,371 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 19:39:34,372 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 19:39:34,384 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 19:39:34,385 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 19:39:34,385 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 19:39:34,386 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 19:39:34,386 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 19:39:34,386 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 19:39:34,387 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 19:39:34,388 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 19:39:34,396 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 [2020-10-27 19:39:34,453 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 19:39:34,453 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 19:39:34,457 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 19:39:34,457 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 19:39:34,457 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 19:39:34,458 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 19:39:34,458 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 19:39:34,458 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 19:39:34,458 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 19:39:34,458 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 19:39:34,459 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 19:39:34,460 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 19:39:34,460 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 19:39:34,460 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 19:39:34,460 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 19:39:34,460 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 19:39:34,461 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 19:39:34,461 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 19:39:34,461 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 19:39:34,461 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 19:39:34,461 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 19:39:34,462 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 19:39:34,462 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 19:39:34,462 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 19:39:34,462 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 19:39:34,462 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 19:39:34,463 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 19:39:34,463 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 19:39:34,463 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 19:39:34,463 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 19:39:34,825 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 19:39:34,858 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 19:39:34,864 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 19:39:34,865 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 19:39:34,866 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 19:39:34,867 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/interpolation2.c.v+nlh-reducer.c [2020-10-27 19:39:34,949 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/60b00a5da/2702a07c6fc24f96bba3a2b76ee46477/FLAGcafb06e75 [2020-10-27 19:39:35,545 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 19:39:35,546 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-benchs/interpolation2.c.v+nlh-reducer.c [2020-10-27 19:39:35,555 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/60b00a5da/2702a07c6fc24f96bba3a2b76ee46477/FLAGcafb06e75 [2020-10-27 19:39:35,866 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/60b00a5da/2702a07c6fc24f96bba3a2b76ee46477 [2020-10-27 19:39:35,870 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 19:39:35,876 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 19:39:35,878 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 19:39:35,878 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 19:39:35,882 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 19:39:35,883 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:39:35" (1/1) ... [2020-10-27 19:39:35,887 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fede82d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:39:35, skipping insertion in model container [2020-10-27 19:39:35,887 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:39:35" (1/1) ... [2020-10-27 19:39:35,896 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 19:39:35,916 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 19:39:36,120 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:39:36,129 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 19:39:36,163 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:39:36,180 INFO L208 MainTranslator]: Completed translation [2020-10-27 19:39:36,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:39:36 WrapperNode [2020-10-27 19:39:36,181 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 19:39:36,182 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 19:39:36,182 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 19:39:36,182 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 19:39:36,218 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:39:36" (1/1) ... [2020-10-27 19:39:36,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:39:36" (1/1) ... [2020-10-27 19:39:36,253 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:39:36" (1/1) ... [2020-10-27 19:39:36,253 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:39:36" (1/1) ... [2020-10-27 19:39:36,270 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:39:36" (1/1) ... [2020-10-27 19:39:36,274 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:39:36" (1/1) ... [2020-10-27 19:39:36,277 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:39:36" (1/1) ... [2020-10-27 19:39:36,280 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 19:39:36,281 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 19:39:36,281 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 19:39:36,282 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 19:39:36,283 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:39:36" (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 [2020-10-27 19:39:36,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 19:39:36,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 19:39:36,347 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 19:39:36,347 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 19:39:36,347 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 19:39:36,347 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 19:39:36,347 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 19:39:36,348 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 19:39:36,348 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 19:39:36,348 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-27 19:39:36,348 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 19:39:36,348 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 19:39:36,348 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 19:39:36,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-27 19:39:36,349 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-27 19:39:36,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 19:39:36,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 19:39:36,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 19:39:36,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 19:39:36,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-27 19:39:36,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 19:39:36,350 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 19:39:36,841 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 19:39:36,841 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 19:39:36,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:39:36 BoogieIcfgContainer [2020-10-27 19:39:36,843 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 19:39:36,845 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 19:39:36,845 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 19:39:36,849 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 19:39:36,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 07:39:35" (1/3) ... [2020-10-27 19:39:36,850 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@125bbb41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:39:36, skipping insertion in model container [2020-10-27 19:39:36,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:39:36" (2/3) ... [2020-10-27 19:39:36,850 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@125bbb41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:39:36, skipping insertion in model container [2020-10-27 19:39:36,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:39:36" (3/3) ... [2020-10-27 19:39:36,852 INFO L111 eAbstractionObserver]: Analyzing ICFG interpolation2.c.v+nlh-reducer.c [2020-10-27 19:39:36,863 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 19:39:36,868 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 19:39:36,881 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 19:39:36,908 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 19:39:36,908 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 19:39:36,908 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 19:39:36,908 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 19:39:36,908 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 19:39:36,909 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 19:39:36,909 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 19:39:36,909 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 19:39:36,928 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-10-27 19:39:36,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-27 19:39:36,934 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:39:36,935 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:39:36,935 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:39:36,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:39:36,942 INFO L82 PathProgramCache]: Analyzing trace with hash 1266268160, now seen corresponding path program 1 times [2020-10-27 19:39:36,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:39:36,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [513664430] [2020-10-27 19:39:36,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:39:37,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:39:37,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:39:37,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:39:37,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 19:39:37,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:39:37,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 382 [2020-10-27 19:39:37,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:39:37,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 19:39:37,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 19:39:37,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 19:39:37,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 19:39:37,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:39:37,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:39:37,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:39:37,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:39:37,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:39:37,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:39:37,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 19:39:37,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:39:37,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:39:37,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:39:37,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:39:37,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:39:37,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:39:37,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [513664430] [2020-10-27 19:39:37,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:39:37,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 19:39:37,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218684716] [2020-10-27 19:39:37,709 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:39:37,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:39:37,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:39:37,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:39:37,735 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 5 states. [2020-10-27 19:39:37,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:39:37,896 INFO L93 Difference]: Finished difference Result 45 states and 59 transitions. [2020-10-27 19:39:37,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:39:37,898 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-27 19:39:37,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:39:37,909 INFO L225 Difference]: With dead ends: 45 [2020-10-27 19:39:37,909 INFO L226 Difference]: Without dead ends: 27 [2020-10-27 19:39:37,913 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:39:37,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-27 19:39:37,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-10-27 19:39:37,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-27 19:39:37,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2020-10-27 19:39:37,954 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 18 [2020-10-27 19:39:37,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:39:37,955 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2020-10-27 19:39:37,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:39:37,955 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2020-10-27 19:39:37,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-27 19:39:37,956 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:39:37,956 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:39:37,957 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 19:39:37,957 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:39:37,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:39:37,958 INFO L82 PathProgramCache]: Analyzing trace with hash 1734493307, now seen corresponding path program 1 times [2020-10-27 19:39:37,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:39:37,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1706510763] [2020-10-27 19:39:37,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:39:37,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 19:39:37,981 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 19:39:37,981 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 19:39:37,986 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 19:39:38,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 07:39:38 BoogieIcfgContainer [2020-10-27 19:39:38,004 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 19:39:38,006 INFO L168 Benchmark]: Toolchain (without parser) took 2133.73 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 107.4 MB in the beginning and 125.6 MB in the end (delta: -18.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-10-27 19:39:38,007 INFO L168 Benchmark]: CDTParser took 0.55 ms. Allocated memory is still 151.0 MB. Free memory is still 124.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 19:39:38,008 INFO L168 Benchmark]: CACSL2BoogieTranslator took 303.09 ms. Allocated memory is still 151.0 MB. Free memory was 106.7 MB in the beginning and 125.1 MB in the end (delta: -18.4 MB). Peak memory consumption was 7.0 MB. Max. memory is 8.0 GB. [2020-10-27 19:39:38,009 INFO L168 Benchmark]: Boogie Preprocessor took 98.64 ms. Allocated memory is still 151.0 MB. Free memory was 125.1 MB in the beginning and 132.2 MB in the end (delta: -7.1 MB). Peak memory consumption was 1.9 MB. Max. memory is 8.0 GB. [2020-10-27 19:39:38,010 INFO L168 Benchmark]: RCFGBuilder took 561.93 ms. Allocated memory is still 151.0 MB. Free memory was 132.2 MB in the beginning and 110.7 MB in the end (delta: 21.5 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-10-27 19:39:38,011 INFO L168 Benchmark]: TraceAbstraction took 1158.69 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 110.5 MB in the beginning and 125.6 MB in the end (delta: -15.1 MB). Peak memory consumption was 16.3 MB. Max. memory is 8.0 GB. [2020-10-27 19:39:38,014 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.55 ms. Allocated memory is still 151.0 MB. Free memory is still 124.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 303.09 ms. Allocated memory is still 151.0 MB. Free memory was 106.7 MB in the beginning and 125.1 MB in the end (delta: -18.4 MB). Peak memory consumption was 7.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 98.64 ms. Allocated memory is still 151.0 MB. Free memory was 125.1 MB in the beginning and 132.2 MB in the end (delta: -7.1 MB). Peak memory consumption was 1.9 MB. Max. memory is 8.0 GB. * RCFGBuilder took 561.93 ms. Allocated memory is still 151.0 MB. Free memory was 132.2 MB in the beginning and 110.7 MB in the end (delta: 21.5 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1158.69 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 110.5 MB in the beginning and 125.6 MB in the end (delta: -15.1 MB). Peak memory consumption was 16.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 4]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 34, overapproximation of someBinaryDOUBLEComparisonOperation at line 40, overapproximation of to_real at line 18, overapproximation of someBinaryArithmeticFLOAToperation at line 38. Possible FailurePath: [L1] int __return_main; [L12] int __return_136; [L15] int main__i; [L16] float main__z; [L17] float main__t; [L18] float main__min[5] = { 5, 10, 12, 30, 150 }; [L19] float main__max[5] = { 10, 12, 30, 150, 300 }; [L20] float main__org[5] = { 1, 5, -10, 30, 20 }; [L21] float main__slope[5] = { 4, -15, 40, -10, 0 }; [L22] main__t = __VERIFIER_nondet_float() [L23] int main____CPAchecker_TMP_0; [L24] EXPR main__min[0] [L24] COND TRUE main__t >= (main__min[0]) [L26] EXPR main__max[4UL] [L26] COND TRUE main__t <= (main__max[4UL]) [L28] main____CPAchecker_TMP_0 = 1 [L29] COND TRUE main____CPAchecker_TMP_0 != 0 [L31] main__i = 0 [L32] COND TRUE main__i < 5UL [L34] EXPR main__max[main__i] [L34] COND TRUE main__t <= (main__max[main__i]) [L38] EXPR main__org[main__i] [L38] EXPR main__slope[main__i] [L38] EXPR main__min[main__i] [L38] EXPR main__max[main__i] [L38] EXPR main__min[main__i] [L38] main__z = (main__org[main__i]) + (((main__slope[main__i]) * (main__t - (main__min[main__i]))) / ((main__max[main__i]) - (main__min[main__i]))) [L39] int main____CPAchecker_TMP_1; [L40] COND FALSE !(main__z >= -10.0) [L66] main____CPAchecker_TMP_1 = 0 [L47] int __tmp_1; [L48] __tmp_1 = main____CPAchecker_TMP_1 [L49] int __VERIFIER_assert__cond; [L50] __VERIFIER_assert__cond = __tmp_1 [L51] COND TRUE __VERIFIER_assert__cond == 0 [L53] CALL reach_error() [L4] __assert_fail("0", "interpolation2.c.v+nlh-reducer.c", 4, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 38 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 41 SDtfs, 6 SDslu, 80 SDs, 0 SdLazy, 52 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 969 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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...