/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 --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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/nla-digbench/sqrt1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 12:37:25,821 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:37:25,824 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:37:25,850 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:37:25,851 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:37:25,852 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:37:25,854 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:37:25,856 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:37:25,857 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:37:25,858 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:37:25,860 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:37:25,861 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:37:25,861 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:37:25,862 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:37:25,863 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:37:25,865 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:37:25,866 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:37:25,867 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:37:25,869 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:37:25,871 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:37:25,872 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:37:25,873 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:37:25,875 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:37:25,878 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:37:25,881 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:37:25,881 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:37:25,881 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:37:25,884 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:37:25,884 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:37:25,885 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:37:25,885 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:37:25,887 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:37:25,888 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:37:25,889 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:37:25,891 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:37:25,891 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:37:25,892 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:37:25,892 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:37:25,893 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:37:25,894 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:37:25,896 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:37:25,897 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 [2020-09-21 12:37:25,958 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:37:25,961 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:37:25,962 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:37:25,962 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:37:25,962 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:37:25,963 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:37:25,963 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 12:37:25,963 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:37:25,963 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 12:37:25,963 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:37:25,964 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:37:25,964 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:37:25,965 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:37:25,965 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 12:37:25,965 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:37:25,965 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:37:25,965 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:37:25,965 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:37:25,966 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:37:25,966 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:37:25,966 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:37:25,967 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:37:25,967 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:37:25,967 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:37:25,967 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:37:25,968 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:37:25,968 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:37:25,968 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:37:25,969 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:37:25,969 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.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=1000;interpolation-heuristic=SMALLEST;log-additional-information=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=1000;interpolation-heuristic=SMALLEST;log-additional-information=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=1000;interpolation-heuristic=SMALLEST;log-additional-information=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=1000;interpolation-heuristic=SMALLEST;log-additional-information=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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-21 12:37:26,446 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:37:26,467 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:37:26,473 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:37:26,475 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:37:26,477 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:37:26,478 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/sqrt1.c [2020-09-21 12:37:26,559 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3ee6112ba/8f441352049042919d8f0fd27df26475/FLAGd4405ec1d [2020-09-21 12:37:27,041 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:37:27,042 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/nla-digbench/sqrt1.c [2020-09-21 12:37:27,055 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3ee6112ba/8f441352049042919d8f0fd27df26475/FLAGd4405ec1d [2020-09-21 12:37:27,383 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3ee6112ba/8f441352049042919d8f0fd27df26475 [2020-09-21 12:37:27,396 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:37:27,403 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:37:27,405 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:37:27,405 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:37:27,409 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:37:27,410 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:37:27" (1/1) ... [2020-09-21 12:37:27,415 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dd6f99d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:37:27, skipping insertion in model container [2020-09-21 12:37:27,415 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:37:27" (1/1) ... [2020-09-21 12:37:27,425 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:37:27,455 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:37:27,718 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:37:27,723 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:37:27,743 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:37:27,758 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:37:27,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:37:27 WrapperNode [2020-09-21 12:37:27,759 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:37:27,760 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:37:27,760 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:37:27,760 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:37:27,773 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:37:27" (1/1) ... [2020-09-21 12:37:27,773 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:37:27" (1/1) ... [2020-09-21 12:37:27,779 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:37:27" (1/1) ... [2020-09-21 12:37:27,780 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:37:27" (1/1) ... [2020-09-21 12:37:27,784 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:37:27" (1/1) ... [2020-09-21 12:37:27,862 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:37:27" (1/1) ... [2020-09-21 12:37:27,863 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:37:27" (1/1) ... [2020-09-21 12:37:27,865 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:37:27,866 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:37:27,866 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:37:27,866 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:37:27,871 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:37:27" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:37:27,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:37:27,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:37:27,946 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-21 12:37:27,946 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-21 12:37:27,946 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:37:27,947 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:37:27,947 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 12:37:27,947 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-21 12:37:27,947 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-21 12:37:27,947 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-21 12:37:27,948 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:37:27,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:37:27,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:37:28,279 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:37:28,280 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-21 12:37:28,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:37:28 BoogieIcfgContainer [2020-09-21 12:37:28,284 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:37:28,285 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:37:28,286 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:37:28,289 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:37:28,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:37:27" (1/3) ... [2020-09-21 12:37:28,291 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24d98e57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:37:28, skipping insertion in model container [2020-09-21 12:37:28,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:37:27" (2/3) ... [2020-09-21 12:37:28,292 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24d98e57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:37:28, skipping insertion in model container [2020-09-21 12:37:28,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:37:28" (3/3) ... [2020-09-21 12:37:28,294 INFO L109 eAbstractionObserver]: Analyzing ICFG sqrt1.c [2020-09-21 12:37:28,306 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:37:28,315 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 12:37:28,337 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 12:37:28,366 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:37:28,367 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:37:28,367 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:37:28,367 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:37:28,367 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:37:28,367 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:37:28,367 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:37:28,368 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:37:28,386 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-09-21 12:37:28,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-21 12:37:28,392 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:37:28,393 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:37:28,394 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:37:28,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:37:28,402 INFO L82 PathProgramCache]: Analyzing trace with hash 1080899301, now seen corresponding path program 1 times [2020-09-21 12:37:28,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:37:28,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2092176208] [2020-09-21 12:37:28,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:37:28,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:28,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:28,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:28,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:28,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:37:28,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:37:28,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-09-21 12:37:28,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:28,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:37:28,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 12:37:28,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:37:28,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-21 12:37:28,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:37:28,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:28,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:28,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:28,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:37:28,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:37:28,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:37:28,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:28,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:37:28,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:37:28,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:37:28,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:37:28,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:37:28,679 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2092176208] [2020-09-21 12:37:28,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:37:28,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-21 12:37:28,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001598859] [2020-09-21 12:37:28,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-21 12:37:28,690 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:37:28,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-21 12:37:28,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-21 12:37:28,711 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 2 states. [2020-09-21 12:37:28,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:37:28,742 INFO L93 Difference]: Finished difference Result 43 states and 65 transitions. [2020-09-21 12:37:28,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-21 12:37:28,743 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-09-21 12:37:28,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:37:28,753 INFO L225 Difference]: With dead ends: 43 [2020-09-21 12:37:28,753 INFO L226 Difference]: Without dead ends: 19 [2020-09-21 12:37:28,757 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-21 12:37:28,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-09-21 12:37:28,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-09-21 12:37:28,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-09-21 12:37:28,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions. [2020-09-21 12:37:28,802 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 24 transitions. Word has length 10 [2020-09-21 12:37:28,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:37:28,802 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 24 transitions. [2020-09-21 12:37:28,802 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-21 12:37:28,802 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 24 transitions. [2020-09-21 12:37:28,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-21 12:37:28,803 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:37:28,803 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:37:28,804 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:37:28,804 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:37:28,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:37:28,805 INFO L82 PathProgramCache]: Analyzing trace with hash 1082567597, now seen corresponding path program 1 times [2020-09-21 12:37:28,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:37:28,806 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [201209110] [2020-09-21 12:37:28,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:37:28,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:28,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:28,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:28,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:37:28,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:37:28,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-21 12:37:28,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:28,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:37:28,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 12:37:28,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:37:28,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:37:28,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:37:28,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:28,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:28,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:28,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:37:28,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:37:28,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:37:28,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:28,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:37:28,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:37:28,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:37:28,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:37:28,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:37:28,978 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [201209110] [2020-09-21 12:37:28,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:37:28,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 12:37:28,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628552641] [2020-09-21 12:37:28,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:37:28,984 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:37:28,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:37:28,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:37:28,984 INFO L87 Difference]: Start difference. First operand 19 states and 24 transitions. Second operand 5 states. [2020-09-21 12:37:29,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:37:29,098 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2020-09-21 12:37:29,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 12:37:29,100 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-09-21 12:37:29,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:37:29,101 INFO L225 Difference]: With dead ends: 25 [2020-09-21 12:37:29,101 INFO L226 Difference]: Without dead ends: 23 [2020-09-21 12:37:29,102 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:37:29,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-09-21 12:37:29,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-09-21 12:37:29,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-09-21 12:37:29,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2020-09-21 12:37:29,114 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 10 [2020-09-21 12:37:29,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:37:29,115 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2020-09-21 12:37:29,115 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:37:29,115 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2020-09-21 12:37:29,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-21 12:37:29,116 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:37:29,116 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:37:29,116 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 12:37:29,117 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:37:29,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:37:29,117 INFO L82 PathProgramCache]: Analyzing trace with hash 725386554, now seen corresponding path program 1 times [2020-09-21 12:37:29,118 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:37:29,118 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [686217548] [2020-09-21 12:37:29,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:37:29,130 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-09-21 12:37:29,130 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-09-21 12:37:29,130 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 12:37:29,136 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 12:37:29,152 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-09-21 12:37:29,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 12:37:29 BoogieIcfgContainer [2020-09-21 12:37:29,153 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 12:37:29,156 INFO L168 Benchmark]: Toolchain (without parser) took 1756.77 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 103.1 MB in the beginning and 125.0 MB in the end (delta: -21.9 MB). Peak memory consumption was 40.5 MB. Max. memory is 7.1 GB. [2020-09-21 12:37:29,158 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 12:37:29,159 INFO L168 Benchmark]: CACSL2BoogieTranslator took 354.70 ms. Allocated memory is still 140.0 MB. Free memory was 102.5 MB in the beginning and 92.9 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-09-21 12:37:29,160 INFO L168 Benchmark]: Boogie Preprocessor took 105.87 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 92.9 MB in the beginning and 181.4 MB in the end (delta: -88.6 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. [2020-09-21 12:37:29,161 INFO L168 Benchmark]: RCFGBuilder took 418.48 ms. Allocated memory is still 202.4 MB. Free memory was 181.4 MB in the beginning and 168.0 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2020-09-21 12:37:29,162 INFO L168 Benchmark]: TraceAbstraction took 867.64 ms. Allocated memory is still 202.4 MB. Free memory was 168.0 MB in the beginning and 125.0 MB in the end (delta: 43.0 MB). Peak memory consumption was 43.0 MB. Max. memory is 7.1 GB. [2020-09-21 12:37:29,166 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 354.70 ms. Allocated memory is still 140.0 MB. Free memory was 102.5 MB in the beginning and 92.9 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 105.87 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 92.9 MB in the beginning and 181.4 MB in the end (delta: -88.6 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 418.48 ms. Allocated memory is still 202.4 MB. Free memory was 181.4 MB in the beginning and 168.0 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 867.64 ms. Allocated memory is still 202.4 MB. Free memory was 168.0 MB in the beginning and 125.0 MB in the end (delta: 43.0 MB). Peak memory consumption was 43.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 12]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L19] int n, a, s, t; [L20] n = __VERIFIER_nondet_int() [L22] a = 0 [L23] s = 1 [L24] t = 1 [L26] COND TRUE 1 [L27] CALL __VERIFIER_assert(t == 2*a + 1) [L10] COND FALSE !(!(cond)) [L27] RET __VERIFIER_assert(t == 2*a + 1) [L28] CALL __VERIFIER_assert(s == (a + 1) * (a + 1)) [L10] COND TRUE !(cond) [L12] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 0.7s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 48 SDtfs, 7 SDslu, 44 SDs, 0 SdLazy, 20 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 324 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...