/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 SingleStatement --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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/veris.c_sendmail_tTflag_arr_one_loop.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:43:36,731 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:43:36,736 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:43:36,784 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:43:36,784 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:43:36,795 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:43:36,798 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:43:36,802 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:43:36,804 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:43:36,808 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:43:36,809 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:43:36,810 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:43:36,811 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:43:36,814 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:43:36,818 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:43:36,821 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:43:36,822 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:43:36,823 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:43:36,825 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:43:36,826 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:43:36,828 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:43:36,829 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:43:36,830 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:43:36,831 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:43:36,833 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:43:36,834 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:43:36,834 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:43:36,835 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:43:36,835 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:43:36,836 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:43:36,837 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:43:36,837 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:43:36,838 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:43:36,839 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:43:36,840 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:43:36,840 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:43:36,841 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:43:36,841 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:43:36,842 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:43:36,843 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:43:36,844 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:43:36,845 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 [2020-09-25 05:43:36,870 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:43:36,870 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:43:36,872 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:43:36,872 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:43:36,872 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:43:36,872 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:43:36,873 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:43:36,873 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:43:36,873 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:43:36,873 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:43:36,873 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:43:36,874 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:43:36,874 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:43:36,874 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:43:36,874 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:43:36,874 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:43:36,875 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:43:36,875 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:43:36,875 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:43:36,875 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:43:36,875 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:43:36,876 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:43:36,876 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:43:36,876 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:43:36,876 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:43:36,877 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:43:36,877 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:43:36,877 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:43:36,877 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:43:36,877 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 -> SingleStatement 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=WIDESTAMONGSMALL;tolerance=0.4;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=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;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=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;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=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;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=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;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=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-09-25 05:43:37,323 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:43:37,342 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:43:37,346 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:43:37,348 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:43:37,348 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:43:37,349 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/veris.c_sendmail_tTflag_arr_one_loop.c [2020-09-25 05:43:37,421 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f78bbbea6/4684db1ab67b48a6a32433241e0bd598/FLAG945246ac4 [2020-09-25 05:43:37,963 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:43:37,965 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/veris.c_sendmail_tTflag_arr_one_loop.c [2020-09-25 05:43:37,977 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f78bbbea6/4684db1ab67b48a6a32433241e0bd598/FLAG945246ac4 [2020-09-25 05:43:38,270 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f78bbbea6/4684db1ab67b48a6a32433241e0bd598 [2020-09-25 05:43:38,282 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:43:38,287 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:43:38,292 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:43:38,292 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:43:38,296 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:43:38,297 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:43:38" (1/1) ... [2020-09-25 05:43:38,302 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45e0ef97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:43:38, skipping insertion in model container [2020-09-25 05:43:38,302 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:43:38" (1/1) ... [2020-09-25 05:43:38,312 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:43:38,335 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:43:38,569 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:43:38,574 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:43:38,597 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:43:38,619 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:43:38,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:43:38 WrapperNode [2020-09-25 05:43:38,620 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:43:38,620 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:43:38,621 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:43:38,621 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:43:38,711 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:43:38" (1/1) ... [2020-09-25 05:43:38,711 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:43:38" (1/1) ... [2020-09-25 05:43:38,725 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:43:38" (1/1) ... [2020-09-25 05:43:38,726 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:43:38" (1/1) ... [2020-09-25 05:43:38,734 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:43:38" (1/1) ... [2020-09-25 05:43:38,741 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:43:38" (1/1) ... [2020-09-25 05:43:38,742 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:43:38" (1/1) ... [2020-09-25 05:43:38,745 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:43:38,745 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:43:38,745 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:43:38,746 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:43:38,747 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:43:38" (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 [2020-09-25 05:43:38,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:43:38,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:43:38,826 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 05:43:38,827 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:43:38,827 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:43:38,827 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-25 05:43:38,827 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 05:43:38,827 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:43:38,828 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 05:43:38,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 05:43:38,828 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 05:43:38,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 05:43:38,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:43:38,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:43:39,180 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:43:39,180 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-25 05:43:39,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:43:39 BoogieIcfgContainer [2020-09-25 05:43:39,186 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:43:39,187 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:43:39,188 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:43:39,192 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:43:39,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:43:38" (1/3) ... [2020-09-25 05:43:39,193 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@616d43eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:43:39, skipping insertion in model container [2020-09-25 05:43:39,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:43:38" (2/3) ... [2020-09-25 05:43:39,194 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@616d43eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:43:39, skipping insertion in model container [2020-09-25 05:43:39,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:43:39" (3/3) ... [2020-09-25 05:43:39,196 INFO L109 eAbstractionObserver]: Analyzing ICFG veris.c_sendmail_tTflag_arr_one_loop.c [2020-09-25 05:43:39,208 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:43:39,219 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:43:39,242 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:43:39,275 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:43:39,275 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:43:39,275 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:43:39,276 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:43:39,276 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:43:39,276 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:43:39,276 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:43:39,276 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:43:39,300 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2020-09-25 05:43:39,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-25 05:43:39,308 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:43:39,309 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, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:43:39,309 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:43:39,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:43:39,316 INFO L82 PathProgramCache]: Analyzing trace with hash 435763839, now seen corresponding path program 1 times [2020-09-25 05:43:39,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:43:39,326 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [649159710] [2020-09-25 05:43:39,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:43:39,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:43:39,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:43:39,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:43:39,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:43:39,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:43:39,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 05:43:39,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:43:39,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 438 [2020-09-25 05:43:39,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:43:39,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:43:39,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:43:39,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-25 05:43:39,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:43:39,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-25 05:43:39,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:43:39,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:43:39,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:43:40,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:43:40,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:43:40,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:43:40,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 05:43:40,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:43:40,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:43:40,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:43:40,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:43:40,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:43:40,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:43:40,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:43:40,026 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [649159710] [2020-09-25 05:43:40,028 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:43:40,029 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 05:43:40,030 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214648077] [2020-09-25 05:43:40,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 05:43:40,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:43:40,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 05:43:40,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 05:43:40,058 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 3 states. [2020-09-25 05:43:40,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:43:40,229 INFO L93 Difference]: Finished difference Result 81 states and 88 transitions. [2020-09-25 05:43:40,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 05:43:40,231 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-09-25 05:43:40,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:43:40,243 INFO L225 Difference]: With dead ends: 81 [2020-09-25 05:43:40,243 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 05:43:40,248 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 05:43:40,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 05:43:40,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-25 05:43:40,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 05:43:40,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2020-09-25 05:43:40,295 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 27 [2020-09-25 05:43:40,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:43:40,295 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2020-09-25 05:43:40,296 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 05:43:40,296 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2020-09-25 05:43:40,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-25 05:43:40,297 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:43:40,297 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, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:43:40,298 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:43:40,298 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:43:40,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:43:40,299 INFO L82 PathProgramCache]: Analyzing trace with hash 424681587, now seen corresponding path program 1 times [2020-09-25 05:43:40,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:43:40,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2023741149] [2020-09-25 05:43:40,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:43:40,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:43:40,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:43:40,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:43:40,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:43:40,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 05:43:40,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:43:40,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-09-25 05:43:40,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:43:40,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:43:40,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:43:40,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 05:43:40,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 05:43:40,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:43:40,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:43:40,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:43:40,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:43:40,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:43:40,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:43:40,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:43:40,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 05:43:40,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:43:40,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:43:40,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:43:40,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:43:40,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:43:40,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:43:40,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:43:40,646 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2023741149] [2020-09-25 05:43:40,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:43:40,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 05:43:40,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15643404] [2020-09-25 05:43:40,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:43:40,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:43:40,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:43:40,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:43:40,665 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand 4 states. [2020-09-25 05:43:40,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:43:40,821 INFO L93 Difference]: Finished difference Result 73 states and 76 transitions. [2020-09-25 05:43:40,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 05:43:40,822 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-09-25 05:43:40,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:43:40,826 INFO L225 Difference]: With dead ends: 73 [2020-09-25 05:43:40,828 INFO L226 Difference]: Without dead ends: 52 [2020-09-25 05:43:40,829 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:43:40,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-25 05:43:40,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 43. [2020-09-25 05:43:40,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-09-25 05:43:40,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2020-09-25 05:43:40,842 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 27 [2020-09-25 05:43:40,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:43:40,842 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2020-09-25 05:43:40,842 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:43:40,842 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2020-09-25 05:43:40,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 05:43:40,843 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:43:40,844 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:43:40,844 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:43:40,844 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:43:40,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:43:40,845 INFO L82 PathProgramCache]: Analyzing trace with hash 164402036, now seen corresponding path program 1 times [2020-09-25 05:43:40,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:43:40,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1612271222] [2020-09-25 05:43:40,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:43:40,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:43:40,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:43:40,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:43:41,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:43:41,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 05:43:41,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:43:41,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 282 [2020-09-25 05:43:41,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:43:41,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:43:41,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:43:41,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 05:43:41,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 05:43:41,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:43:41,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:43:41,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:43:41,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:43:41,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:43:41,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:43:41,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:43:41,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 05:43:41,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:43:41,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:43:41,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:43:41,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:43:41,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:43:41,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:43:41,238 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:43:41,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1612271222] [2020-09-25 05:43:41,239 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:43:41,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 05:43:41,240 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819118380] [2020-09-25 05:43:41,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 05:43:41,240 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:43:41,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 05:43:41,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:43:41,241 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 6 states. [2020-09-25 05:43:41,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:43:41,391 INFO L93 Difference]: Finished difference Result 80 states and 83 transitions. [2020-09-25 05:43:41,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 05:43:41,392 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2020-09-25 05:43:41,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:43:41,393 INFO L225 Difference]: With dead ends: 80 [2020-09-25 05:43:41,393 INFO L226 Difference]: Without dead ends: 59 [2020-09-25 05:43:41,394 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:43:41,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-09-25 05:43:41,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 50. [2020-09-25 05:43:41,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 05:43:41,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2020-09-25 05:43:41,402 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 34 [2020-09-25 05:43:41,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:43:41,403 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2020-09-25 05:43:41,403 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 05:43:41,403 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2020-09-25 05:43:41,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-25 05:43:41,405 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:43:41,405 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:43:41,405 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:43:41,405 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:43:41,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:43:41,406 INFO L82 PathProgramCache]: Analyzing trace with hash 1692003667, now seen corresponding path program 2 times [2020-09-25 05:43:41,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:43:41,406 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [261002778] [2020-09-25 05:43:41,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:43:41,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:43:41,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:43:41,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:43:42,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:43:42,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-25 05:43:42,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:43:42,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 694 [2020-09-25 05:43:42,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:43:42,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:43:42,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:43:42,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 05:43:42,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 05:43:42,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:43:42,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:43:42,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:43:42,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:43:42,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:43:42,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:43:42,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:43:42,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 05:43:42,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:43:42,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:43:42,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:43:42,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:43:42,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:43:42,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:43:42,184 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 05:43:42,185 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [261002778] [2020-09-25 05:43:42,185 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:43:42,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 05:43:42,186 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683726219] [2020-09-25 05:43:42,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:43:42,187 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:43:42,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:43:42,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:43:42,188 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand 5 states. [2020-09-25 05:43:42,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:43:42,283 INFO L93 Difference]: Finished difference Result 50 states and 51 transitions. [2020-09-25 05:43:42,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:43:42,283 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 41 [2020-09-25 05:43:42,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:43:42,284 INFO L225 Difference]: With dead ends: 50 [2020-09-25 05:43:42,284 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 05:43:42,285 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:43:42,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 05:43:42,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 05:43:42,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 05:43:42,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 05:43:42,286 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 41 [2020-09-25 05:43:42,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:43:42,286 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 05:43:42,287 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:43:42,287 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 05:43:42,287 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 05:43:42,287 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:43:42,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 05:43:42,353 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-09-25 05:43:42,353 INFO L268 CegarLoopResult]: For program point L-1-1(line -1) no Hoare annotation was computed. [2020-09-25 05:43:42,353 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-25 05:43:42,353 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-09-25 05:43:42,354 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 05:43:42,354 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 05:43:42,354 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 05:43:42,354 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 05:43:42,354 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 05:43:42,354 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-09-25 05:43:42,354 INFO L268 CegarLoopResult]: For program point L31-1(line 31) no Hoare annotation was computed. [2020-09-25 05:43:42,355 INFO L268 CegarLoopResult]: For program point L31-2(line 31) no Hoare annotation was computed. [2020-09-25 05:43:42,355 INFO L271 CegarLoopResult]: At program point L27-2(lines 27 33) the Hoare annotation is: true [2020-09-25 05:43:42,355 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 10 37) no Hoare annotation was computed. [2020-09-25 05:43:42,355 INFO L271 CegarLoopResult]: At program point L27-3(lines 27 33) the Hoare annotation is: true [2020-09-25 05:43:42,355 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-25 05:43:42,355 INFO L268 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-09-25 05:43:42,356 INFO L268 CegarLoopResult]: For program point L19-2(line 19) no Hoare annotation was computed. [2020-09-25 05:43:42,356 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-25 05:43:42,356 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-09-25 05:43:42,356 INFO L268 CegarLoopResult]: For program point L32(line 32) no Hoare annotation was computed. [2020-09-25 05:43:42,356 INFO L268 CegarLoopResult]: For program point L32-1(line 32) no Hoare annotation was computed. [2020-09-25 05:43:42,356 INFO L268 CegarLoopResult]: For program point L32-2(line 32) no Hoare annotation was computed. [2020-09-25 05:43:42,357 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-09-25 05:43:42,357 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-25 05:43:42,357 INFO L268 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-09-25 05:43:42,357 INFO L268 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-09-25 05:43:42,357 INFO L268 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-09-25 05:43:42,357 INFO L268 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2020-09-25 05:43:42,358 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-25 05:43:42,358 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 10 37) no Hoare annotation was computed. [2020-09-25 05:43:42,358 INFO L268 CegarLoopResult]: For program point L30(line 30) no Hoare annotation was computed. [2020-09-25 05:43:42,358 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 10 37) the Hoare annotation is: (= |old(#valid)| |#valid|) [2020-09-25 05:43:42,358 INFO L268 CegarLoopResult]: For program point L26(line 26) no Hoare annotation was computed. [2020-09-25 05:43:42,358 INFO L268 CegarLoopResult]: For program point L26-1(line 26) no Hoare annotation was computed. [2020-09-25 05:43:42,359 INFO L268 CegarLoopResult]: For program point L26-2(line 26) no Hoare annotation was computed. [2020-09-25 05:43:42,359 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-25 05:43:42,359 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-25 05:43:42,359 INFO L268 CegarLoopResult]: For program point L18-3(lines 18 20) no Hoare annotation was computed. [2020-09-25 05:43:42,359 INFO L268 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-09-25 05:43:42,359 INFO L268 CegarLoopResult]: For program point L18-4(line 18) no Hoare annotation was computed. [2020-09-25 05:43:42,359 INFO L268 CegarLoopResult]: For program point L18-5(line 18) no Hoare annotation was computed. [2020-09-25 05:43:42,360 INFO L271 CegarLoopResult]: At program point L18-6(lines 18 20) the Hoare annotation is: true [2020-09-25 05:43:42,360 INFO L268 CegarLoopResult]: For program point L18-7(lines 18 20) no Hoare annotation was computed. [2020-09-25 05:43:42,360 INFO L268 CegarLoopResult]: For program point L35(line 35) no Hoare annotation was computed. [2020-09-25 05:43:42,360 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 4 9) the Hoare annotation is: true [2020-09-25 05:43:42,360 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 4 9) no Hoare annotation was computed. [2020-09-25 05:43:42,360 INFO L268 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-09-25 05:43:42,361 INFO L268 CegarLoopResult]: For program point L5(lines 5 7) no Hoare annotation was computed. [2020-09-25 05:43:42,361 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2020-09-25 05:43:42,361 INFO L268 CegarLoopResult]: For program point L5-2(lines 4 9) no Hoare annotation was computed. [2020-09-25 05:43:42,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 05:43:42 BoogieIcfgContainer [2020-09-25 05:43:42,374 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 05:43:42,378 INFO L168 Benchmark]: Toolchain (without parser) took 4092.55 ms. Allocated memory was 141.0 MB in the beginning and 244.8 MB in the end (delta: 103.8 MB). Free memory was 104.4 MB in the beginning and 164.1 MB in the end (delta: -59.7 MB). Peak memory consumption was 44.1 MB. Max. memory is 7.1 GB. [2020-09-25 05:43:42,379 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 05:43:42,379 INFO L168 Benchmark]: CACSL2BoogieTranslator took 328.62 ms. Allocated memory is still 141.0 MB. Free memory was 103.8 MB in the beginning and 93.8 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-09-25 05:43:42,380 INFO L168 Benchmark]: Boogie Preprocessor took 124.42 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 93.8 MB in the beginning and 181.9 MB in the end (delta: -88.1 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. [2020-09-25 05:43:42,381 INFO L168 Benchmark]: RCFGBuilder took 441.02 ms. Allocated memory is still 203.9 MB. Free memory was 181.9 MB in the beginning and 165.2 MB in the end (delta: 16.7 MB). Peak memory consumption was 16.7 MB. Max. memory is 7.1 GB. [2020-09-25 05:43:42,382 INFO L168 Benchmark]: TraceAbstraction took 3186.87 ms. Allocated memory was 203.9 MB in the beginning and 244.8 MB in the end (delta: 40.9 MB). Free memory was 165.2 MB in the beginning and 164.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 42.0 MB. Max. memory is 7.1 GB. [2020-09-25 05:43:42,386 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 328.62 ms. Allocated memory is still 141.0 MB. Free memory was 103.8 MB in the beginning and 93.8 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 124.42 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 93.8 MB in the beginning and 181.9 MB in the end (delta: -88.1 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 441.02 ms. Allocated memory is still 203.9 MB. Free memory was 181.9 MB in the beginning and 165.2 MB in the end (delta: 16.7 MB). Peak memory consumption was 16.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3186.87 ms. Allocated memory was 203.9 MB in the beginning and 244.8 MB in the end (delta: 40.9 MB). Free memory was 165.2 MB in the beginning and 164.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 42.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.0s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 165 SDtfs, 40 SDslu, 205 SDs, 0 SdLazy, 200 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred 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, 4 MinimizatonAttempts, 18 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 11 PreInvPairs, 15 NumberOfFragments, 19 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 24 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 129 NumberOfCodeBlocks, 129 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 125 ConstructedInterpolants, 0 QuantifiedInterpolants, 7514 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 9/10 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 proved your program to be correct! Received shutdown request...