/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=NARROWEST --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/string-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 02:18:58,798 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 02:18:58,802 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 02:18:58,829 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 02:18:58,830 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 02:18:58,831 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 02:18:58,833 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 02:18:58,835 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 02:18:58,837 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 02:18:58,838 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 02:18:58,839 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 02:18:58,840 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 02:18:58,841 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 02:18:58,842 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 02:18:58,843 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 02:18:58,845 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 02:18:58,846 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 02:18:58,847 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 02:18:58,849 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 02:18:58,851 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 02:18:58,853 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 02:18:58,855 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 02:18:58,856 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 02:18:58,857 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 02:18:58,860 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 02:18:58,860 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 02:18:58,860 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 02:18:58,862 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 02:18:58,862 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 02:18:58,863 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 02:18:58,864 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 02:18:58,865 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 02:18:58,866 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 02:18:58,867 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 02:18:58,868 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 02:18:58,868 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 02:18:58,869 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 02:18:58,869 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 02:18:58,870 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 02:18:58,871 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 02:18:58,872 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 02:18:58,873 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 02:18:58,923 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 02:18:58,924 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 02:18:58,927 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 02:18:58,927 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 02:18:58,927 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 02:18:58,927 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 02:18:58,927 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 02:18:58,929 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 02:18:58,929 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 02:18:58,930 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 02:18:58,930 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 02:18:58,930 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 02:18:58,930 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 02:18:58,930 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 02:18:58,931 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 02:18:58,932 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 02:18:58,932 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 02:18:58,932 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 02:18:58,932 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 02:18:58,933 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 02:18:58,933 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 02:18:58,933 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:18:58,933 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 02:18:58,933 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 02:18:58,934 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 02:18:58,935 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 02:18:58,935 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 02:18:58,935 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 02:18:58,935 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 02:18:58,935 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true; [2020-09-25 02:18:59,456 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 02:18:59,479 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 02:18:59,484 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 02:18:59,487 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 02:18:59,487 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 02:18:59,488 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/string-1.i [2020-09-25 02:18:59,587 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7127ed344/854fabd23a824c1cb5c766e1ffea7f9e/FLAGe0d9dc852 [2020-09-25 02:19:00,189 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 02:19:00,190 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/string-1.i [2020-09-25 02:19:00,199 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7127ed344/854fabd23a824c1cb5c766e1ffea7f9e/FLAGe0d9dc852 [2020-09-25 02:19:00,490 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7127ed344/854fabd23a824c1cb5c766e1ffea7f9e [2020-09-25 02:19:00,506 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 02:19:00,512 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 02:19:00,514 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 02:19:00,514 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 02:19:00,518 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 02:19:00,520 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:19:00" (1/1) ... [2020-09-25 02:19:00,524 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dbfc66d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:00, skipping insertion in model container [2020-09-25 02:19:00,524 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:19:00" (1/1) ... [2020-09-25 02:19:00,534 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 02:19:00,563 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 02:19:00,817 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:19:00,823 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 02:19:00,856 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:19:00,883 INFO L208 MainTranslator]: Completed translation [2020-09-25 02:19:00,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:00 WrapperNode [2020-09-25 02:19:00,883 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 02:19:00,884 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 02:19:00,885 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 02:19:00,885 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 02:19:00,987 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:00" (1/1) ... [2020-09-25 02:19:00,987 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:00" (1/1) ... [2020-09-25 02:19:01,000 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:00" (1/1) ... [2020-09-25 02:19:01,001 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:00" (1/1) ... [2020-09-25 02:19:01,010 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:00" (1/1) ... [2020-09-25 02:19:01,019 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:00" (1/1) ... [2020-09-25 02:19:01,021 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:00" (1/1) ... [2020-09-25 02:19:01,024 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 02:19:01,024 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 02:19:01,024 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 02:19:01,025 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 02:19:01,026 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:00" (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 02:19:01,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 02:19:01,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 02:19:01,110 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 02:19:01,110 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 02:19:01,111 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 02:19:01,111 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 02:19:01,111 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 02:19:01,111 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 02:19:01,111 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 02:19:01,112 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-25 02:19:01,112 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 02:19:01,112 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 02:19:01,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 02:19:01,112 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 02:19:01,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 02:19:01,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 02:19:01,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 02:19:01,540 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 02:19:01,541 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-25 02:19:01,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:19:01 BoogieIcfgContainer [2020-09-25 02:19:01,548 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 02:19:01,549 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 02:19:01,550 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 02:19:01,553 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 02:19:01,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:19:00" (1/3) ... [2020-09-25 02:19:01,555 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b0f126c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:19:01, skipping insertion in model container [2020-09-25 02:19:01,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:00" (2/3) ... [2020-09-25 02:19:01,556 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b0f126c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:19:01, skipping insertion in model container [2020-09-25 02:19:01,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:19:01" (3/3) ... [2020-09-25 02:19:01,558 INFO L109 eAbstractionObserver]: Analyzing ICFG string-1.i [2020-09-25 02:19:01,571 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 02:19:01,582 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 02:19:01,606 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 02:19:01,639 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 02:19:01,639 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 02:19:01,640 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 02:19:01,640 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 02:19:01,640 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 02:19:01,640 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 02:19:01,640 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 02:19:01,640 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 02:19:01,665 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states. [2020-09-25 02:19:01,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-25 02:19:01,674 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:19:01,675 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, 1, 1, 1] [2020-09-25 02:19:01,676 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:19:01,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:19:01,683 INFO L82 PathProgramCache]: Analyzing trace with hash -768807104, now seen corresponding path program 1 times [2020-09-25 02:19:01,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:19:01,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [45667305] [2020-09-25 02:19:01,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:19:01,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:19:01,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:01,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:01,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:01,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:02,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:02,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:02,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:19:02,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 02:19:02,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 02:19:02,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 561 [2020-09-25 02:19:02,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:19:02,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:19:02,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-09-25 02:19:02,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:19:02,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 02:19:02,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:19:02,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:19:02,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:02,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:19:02,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:19:02,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:19:02,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 02:19:02,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:19:02,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:19:02,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:19:02,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:19:02,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:19:02,502 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 02:19:02,503 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [45667305] [2020-09-25 02:19:02,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:19:02,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 02:19:02,507 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701832278] [2020-09-25 02:19:02,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 02:19:02,515 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:19:02,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 02:19:02,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 02:19:02,534 INFO L87 Difference]: Start difference. First operand 105 states. Second operand 3 states. [2020-09-25 02:19:02,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:19:02,841 INFO L93 Difference]: Finished difference Result 188 states and 215 transitions. [2020-09-25 02:19:02,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 02:19:02,844 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2020-09-25 02:19:02,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:19:02,860 INFO L225 Difference]: With dead ends: 188 [2020-09-25 02:19:02,861 INFO L226 Difference]: Without dead ends: 77 [2020-09-25 02:19:02,867 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 02:19:02,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-09-25 02:19:02,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2020-09-25 02:19:02,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-09-25 02:19:02,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 82 transitions. [2020-09-25 02:19:02,925 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 82 transitions. Word has length 37 [2020-09-25 02:19:02,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:19:02,925 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 82 transitions. [2020-09-25 02:19:02,926 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 02:19:02,926 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 82 transitions. [2020-09-25 02:19:02,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-25 02:19:02,938 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:19:02,939 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, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:19:02,939 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 02:19:02,939 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:19:02,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:19:02,943 INFO L82 PathProgramCache]: Analyzing trace with hash 1309055982, now seen corresponding path program 1 times [2020-09-25 02:19:02,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:19:02,944 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1181021817] [2020-09-25 02:19:02,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:19:02,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:19:02,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:03,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:03,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:03,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:19:03,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-25 02:19:03,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:19:03,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 411 [2020-09-25 02:19:03,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:19:03,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:19:03,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 02:19:03,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 02:19:03,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 02:19:03,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:19:03,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:19:03,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:03,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:19:03,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:19:03,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:19:03,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 02:19:03,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:19:03,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:19:03,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:19:03,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:19:03,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 02:19:03,460 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 02:19:03,461 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1181021817] [2020-09-25 02:19:03,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:19:03,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 02:19:03,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762570263] [2020-09-25 02:19:03,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 02:19:03,474 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:19:03,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 02:19:03,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 02:19:03,475 INFO L87 Difference]: Start difference. First operand 77 states and 82 transitions. Second operand 4 states. [2020-09-25 02:19:03,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:19:03,694 INFO L93 Difference]: Finished difference Result 144 states and 155 transitions. [2020-09-25 02:19:03,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 02:19:03,695 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2020-09-25 02:19:03,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:19:03,698 INFO L225 Difference]: With dead ends: 144 [2020-09-25 02:19:03,699 INFO L226 Difference]: Without dead ends: 89 [2020-09-25 02:19:03,700 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 02:19:03,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-09-25 02:19:03,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 79. [2020-09-25 02:19:03,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-09-25 02:19:03,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 84 transitions. [2020-09-25 02:19:03,713 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 84 transitions. Word has length 41 [2020-09-25 02:19:03,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:19:03,713 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 84 transitions. [2020-09-25 02:19:03,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 02:19:03,714 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 84 transitions. [2020-09-25 02:19:03,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-25 02:19:03,716 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:19:03,716 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:19:03,716 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 02:19:03,716 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:19:03,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:19:03,717 INFO L82 PathProgramCache]: Analyzing trace with hash 512896601, now seen corresponding path program 1 times [2020-09-25 02:19:03,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:19:03,717 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [501627645] [2020-09-25 02:19:03,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:19:03,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:19:03,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:03,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:04,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:05,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:19:05,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-25 02:19:05,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:19:05,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1460 [2020-09-25 02:19:05,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:19:05,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:19:05,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-09-25 02:19:05,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 02:19:05,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:19:05,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:19:05,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:19:05,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:05,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:19:05,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:19:05,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:19:05,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 02:19:05,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:19:05,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:19:05,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:19:05,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:19:05,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:19:05,322 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 02:19:05,322 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [501627645] [2020-09-25 02:19:05,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:19:05,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 02:19:05,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625849064] [2020-09-25 02:19:05,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 02:19:05,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:19:05,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 02:19:05,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 02:19:05,326 INFO L87 Difference]: Start difference. First operand 79 states and 84 transitions. Second operand 6 states. [2020-09-25 02:19:05,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:19:05,558 INFO L93 Difference]: Finished difference Result 79 states and 84 transitions. [2020-09-25 02:19:05,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 02:19:05,559 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 55 [2020-09-25 02:19:05,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:19:05,560 INFO L225 Difference]: With dead ends: 79 [2020-09-25 02:19:05,560 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 02:19:05,562 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-25 02:19:05,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 02:19:05,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 02:19:05,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 02:19:05,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 02:19:05,563 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 55 [2020-09-25 02:19:05,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:19:05,564 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 02:19:05,564 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 02:19:05,564 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 02:19:05,564 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 02:19:05,565 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 02:19:05,568 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 02:19:05,733 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-09-25 02:19:05,734 INFO L268 CegarLoopResult]: For program point L-1-1(line -1) no Hoare annotation was computed. [2020-09-25 02:19:05,734 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-25 02:19:05,734 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 02:19:05,735 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 02:19:05,735 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 02:19:05,735 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 02:19:05,735 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 02:19:05,736 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 02:19:05,736 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 4 6) no Hoare annotation was computed. [2020-09-25 02:19:05,736 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-09-25 02:19:05,737 INFO L268 CegarLoopResult]: For program point L5-1(line 5) no Hoare annotation was computed. [2020-09-25 02:19:05,738 INFO L268 CegarLoopResult]: For program point L5-3(lines 4 6) no Hoare annotation was computed. [2020-09-25 02:19:05,739 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 4 6) no Hoare annotation was computed. [2020-09-25 02:19:05,739 INFO L268 CegarLoopResult]: For program point L35-2(line 35) no Hoare annotation was computed. [2020-09-25 02:19:05,739 INFO L268 CegarLoopResult]: For program point L35-4(line 35) no Hoare annotation was computed. [2020-09-25 02:19:05,740 INFO L264 CegarLoopResult]: At program point L35-5(lines 35 36) the Hoare annotation is: (and (<= main_~found~0 1) (<= 0 main_~found~0)) [2020-09-25 02:19:05,740 INFO L268 CegarLoopResult]: For program point L35-6(lines 18 61) no Hoare annotation was computed. [2020-09-25 02:19:05,740 INFO L268 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2020-09-25 02:19:05,740 INFO L268 CegarLoopResult]: For program point L27-1(line 27) no Hoare annotation was computed. [2020-09-25 02:19:05,741 INFO L268 CegarLoopResult]: For program point L27-2(line 27) no Hoare annotation was computed. [2020-09-25 02:19:05,742 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 17 61) no Hoare annotation was computed. [2020-09-25 02:19:05,746 INFO L268 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2020-09-25 02:19:05,747 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-25 02:19:05,747 INFO L268 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-09-25 02:19:05,747 INFO L268 CegarLoopResult]: For program point L19-2(line 19) no Hoare annotation was computed. [2020-09-25 02:19:05,747 INFO L268 CegarLoopResult]: For program point L19-3(line 19) no Hoare annotation was computed. [2020-09-25 02:19:05,748 INFO L268 CegarLoopResult]: For program point L19-4(line 19) no Hoare annotation was computed. [2020-09-25 02:19:05,748 INFO L268 CegarLoopResult]: For program point L19-5(line 19) no Hoare annotation was computed. [2020-09-25 02:19:05,748 INFO L268 CegarLoopResult]: For program point L19-6(line 19) no Hoare annotation was computed. [2020-09-25 02:19:05,748 INFO L268 CegarLoopResult]: For program point L19-7(line 19) no Hoare annotation was computed. [2020-09-25 02:19:05,748 INFO L268 CegarLoopResult]: For program point L44(line 44) no Hoare annotation was computed. [2020-09-25 02:19:05,750 INFO L268 CegarLoopResult]: For program point L19-8(line 19) no Hoare annotation was computed. [2020-09-25 02:19:05,751 INFO L268 CegarLoopResult]: For program point L44-1(line 44) no Hoare annotation was computed. [2020-09-25 02:19:05,752 INFO L268 CegarLoopResult]: For program point L19-9(line 19) no Hoare annotation was computed. [2020-09-25 02:19:05,752 INFO L268 CegarLoopResult]: For program point L44-2(lines 44 53) no Hoare annotation was computed. [2020-09-25 02:19:05,753 INFO L268 CegarLoopResult]: For program point L19-10(line 19) no Hoare annotation was computed. [2020-09-25 02:19:05,753 INFO L268 CegarLoopResult]: For program point L44-3(line 44) no Hoare annotation was computed. [2020-09-25 02:19:05,753 INFO L268 CegarLoopResult]: For program point L19-11(line 19) no Hoare annotation was computed. [2020-09-25 02:19:05,753 INFO L268 CegarLoopResult]: For program point L44-4(line 44) no Hoare annotation was computed. [2020-09-25 02:19:05,754 INFO L268 CegarLoopResult]: For program point L19-12(line 19) no Hoare annotation was computed. [2020-09-25 02:19:05,757 INFO L268 CegarLoopResult]: For program point L19-13(line 19) no Hoare annotation was computed. [2020-09-25 02:19:05,757 INFO L268 CegarLoopResult]: For program point L44-6(line 44) no Hoare annotation was computed. [2020-09-25 02:19:05,757 INFO L268 CegarLoopResult]: For program point L44-7(line 44) no Hoare annotation was computed. [2020-09-25 02:19:05,758 INFO L268 CegarLoopResult]: For program point L19-14(line 19) no Hoare annotation was computed. [2020-09-25 02:19:05,758 INFO L268 CegarLoopResult]: For program point L36(line 36) no Hoare annotation was computed. [2020-09-25 02:19:05,758 INFO L264 CegarLoopResult]: At program point L44-8(lines 42 54) the Hoare annotation is: (and (<= main_~found~0 1) (<= 0 main_~found~0)) [2020-09-25 02:19:05,758 INFO L268 CegarLoopResult]: For program point L19-15(line 19) no Hoare annotation was computed. [2020-09-25 02:19:05,758 INFO L268 CegarLoopResult]: For program point L36-1(line 36) no Hoare annotation was computed. [2020-09-25 02:19:05,758 INFO L268 CegarLoopResult]: For program point L19-16(line 19) no Hoare annotation was computed. [2020-09-25 02:19:05,759 INFO L268 CegarLoopResult]: For program point L36-2(line 36) no Hoare annotation was computed. [2020-09-25 02:19:05,759 INFO L268 CegarLoopResult]: For program point L19-17(line 19) no Hoare annotation was computed. [2020-09-25 02:19:05,759 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-09-25 02:19:05,759 INFO L268 CegarLoopResult]: For program point L28-1(line 28) no Hoare annotation was computed. [2020-09-25 02:19:05,759 INFO L268 CegarLoopResult]: For program point L28-2(line 28) no Hoare annotation was computed. [2020-09-25 02:19:05,759 INFO L268 CegarLoopResult]: For program point L28-3(line 28) no Hoare annotation was computed. [2020-09-25 02:19:05,759 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-09-25 02:19:05,760 INFO L268 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2020-09-25 02:19:05,760 INFO L268 CegarLoopResult]: For program point L20-2(line 20) no Hoare annotation was computed. [2020-09-25 02:19:05,760 INFO L268 CegarLoopResult]: For program point L20-3(line 20) no Hoare annotation was computed. [2020-09-25 02:19:05,760 INFO L268 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-09-25 02:19:05,761 INFO L268 CegarLoopResult]: For program point L46-1(line 46) no Hoare annotation was computed. [2020-09-25 02:19:05,761 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 17 61) no Hoare annotation was computed. [2020-09-25 02:19:05,761 INFO L268 CegarLoopResult]: For program point L46-2(line 46) no Hoare annotation was computed. [2020-09-25 02:19:05,761 INFO L268 CegarLoopResult]: For program point L38(line 38) no Hoare annotation was computed. [2020-09-25 02:19:05,761 INFO L268 CegarLoopResult]: For program point L30(line 30) no Hoare annotation was computed. [2020-09-25 02:19:05,761 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 17 61) the Hoare annotation is: (= |old(#valid)| |#valid|) [2020-09-25 02:19:05,761 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-25 02:19:05,762 INFO L268 CegarLoopResult]: For program point L22-3(lines 22 23) no Hoare annotation was computed. [2020-09-25 02:19:05,762 INFO L268 CegarLoopResult]: For program point L22-4(line 22) no Hoare annotation was computed. [2020-09-25 02:19:05,762 INFO L268 CegarLoopResult]: For program point L22-5(line 22) no Hoare annotation was computed. [2020-09-25 02:19:05,762 INFO L264 CegarLoopResult]: At program point L22-6(lines 22 23) the Hoare annotation is: (and (<= main_~found~0 1) (<= 0 main_~found~0)) [2020-09-25 02:19:05,762 INFO L268 CegarLoopResult]: For program point L22-7(lines 22 23) no Hoare annotation was computed. [2020-09-25 02:19:05,762 INFO L268 CegarLoopResult]: For program point L47(line 47) no Hoare annotation was computed. [2020-09-25 02:19:05,762 INFO L268 CegarLoopResult]: For program point L47-1(line 47) no Hoare annotation was computed. [2020-09-25 02:19:05,763 INFO L268 CegarLoopResult]: For program point L47-2(line 47) no Hoare annotation was computed. [2020-09-25 02:19:05,763 INFO L268 CegarLoopResult]: For program point L31-1(lines 31 32) no Hoare annotation was computed. [2020-09-25 02:19:05,763 INFO L268 CegarLoopResult]: For program point L31-2(line 31) no Hoare annotation was computed. [2020-09-25 02:19:05,765 INFO L268 CegarLoopResult]: For program point L31-4(line 31) no Hoare annotation was computed. [2020-09-25 02:19:05,765 INFO L264 CegarLoopResult]: At program point L31-5(lines 31 32) the Hoare annotation is: (and (<= main_~found~0 1) (<= 0 main_~found~0)) [2020-09-25 02:19:05,765 INFO L268 CegarLoopResult]: For program point L31-6(lines 31 32) no Hoare annotation was computed. [2020-09-25 02:19:05,765 INFO L268 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-09-25 02:19:05,765 INFO L268 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-09-25 02:19:05,765 INFO L268 CegarLoopResult]: For program point L23-2(line 23) no Hoare annotation was computed. [2020-09-25 02:19:05,766 INFO L268 CegarLoopResult]: For program point L32(line 32) no Hoare annotation was computed. [2020-09-25 02:19:05,766 INFO L268 CegarLoopResult]: For program point L32-1(line 32) no Hoare annotation was computed. [2020-09-25 02:19:05,766 INFO L268 CegarLoopResult]: For program point L32-2(line 32) no Hoare annotation was computed. [2020-09-25 02:19:05,766 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-09-25 02:19:05,766 INFO L268 CegarLoopResult]: For program point L24-1(line 24) no Hoare annotation was computed. [2020-09-25 02:19:05,767 INFO L268 CegarLoopResult]: For program point L24-2(line 24) no Hoare annotation was computed. [2020-09-25 02:19:05,767 INFO L268 CegarLoopResult]: For program point L24-3(line 24) no Hoare annotation was computed. [2020-09-25 02:19:05,767 INFO L268 CegarLoopResult]: For program point L41(line 41) no Hoare annotation was computed. [2020-09-25 02:19:05,767 INFO L268 CegarLoopResult]: For program point L41-1(line 41) no Hoare annotation was computed. [2020-09-25 02:19:05,767 INFO L264 CegarLoopResult]: At program point L58(line 58) the Hoare annotation is: (and (<= main_~found~0 1) (<= 0 main_~found~0)) [2020-09-25 02:19:05,768 INFO L268 CegarLoopResult]: For program point L58-1(line 58) no Hoare annotation was computed. [2020-09-25 02:19:05,768 INFO L268 CegarLoopResult]: For program point L42-2(lines 42 54) no Hoare annotation was computed. [2020-09-25 02:19:05,768 INFO L268 CegarLoopResult]: For program point L26(line 26) no Hoare annotation was computed. [2020-09-25 02:19:05,768 INFO L268 CegarLoopResult]: For program point L26-3(lines 26 27) no Hoare annotation was computed. [2020-09-25 02:19:05,769 INFO L268 CegarLoopResult]: For program point L26-4(line 26) no Hoare annotation was computed. [2020-09-25 02:19:05,769 INFO L268 CegarLoopResult]: For program point L26-5(line 26) no Hoare annotation was computed. [2020-09-25 02:19:05,770 INFO L264 CegarLoopResult]: At program point L26-6(lines 26 27) the Hoare annotation is: (and (<= main_~found~0 1) (<= 0 main_~found~0)) [2020-09-25 02:19:05,770 INFO L268 CegarLoopResult]: For program point L26-7(lines 26 27) no Hoare annotation was computed. [2020-09-25 02:19:05,770 INFO L268 CegarLoopResult]: For program point L51(line 51) no Hoare annotation was computed. [2020-09-25 02:19:05,770 INFO L268 CegarLoopResult]: For program point L35-1(lines 35 36) no Hoare annotation was computed. [2020-09-25 02:19:05,770 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 7 12) the Hoare annotation is: true [2020-09-25 02:19:05,771 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 7 12) no Hoare annotation was computed. [2020-09-25 02:19:05,771 INFO L268 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-09-25 02:19:05,772 INFO L268 CegarLoopResult]: For program point L8(lines 8 10) no Hoare annotation was computed. [2020-09-25 02:19:05,772 INFO L268 CegarLoopResult]: For program point L8-2(lines 7 12) no Hoare annotation was computed. [2020-09-25 02:19:05,773 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2020-09-25 02:19:05,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 02:19:05 BoogieIcfgContainer [2020-09-25 02:19:05,823 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 02:19:05,831 INFO L168 Benchmark]: Toolchain (without parser) took 5318.63 ms. Allocated memory was 144.7 MB in the beginning and 249.6 MB in the end (delta: 104.9 MB). Free memory was 101.3 MB in the beginning and 103.6 MB in the end (delta: -2.3 MB). Peak memory consumption was 102.6 MB. Max. memory is 7.1 GB. [2020-09-25 02:19:05,835 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 144.7 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-09-25 02:19:05,836 INFO L168 Benchmark]: CACSL2BoogieTranslator took 370.29 ms. Allocated memory is still 144.7 MB. Free memory was 100.7 MB in the beginning and 90.2 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-09-25 02:19:05,839 INFO L168 Benchmark]: Boogie Preprocessor took 139.53 ms. Allocated memory was 144.7 MB in the beginning and 200.3 MB in the end (delta: 55.6 MB). Free memory was 90.2 MB in the beginning and 178.0 MB in the end (delta: -87.8 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-09-25 02:19:05,841 INFO L168 Benchmark]: RCFGBuilder took 524.09 ms. Allocated memory is still 200.3 MB. Free memory was 178.0 MB in the beginning and 153.0 MB in the end (delta: 25.0 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. [2020-09-25 02:19:05,847 INFO L168 Benchmark]: TraceAbstraction took 4273.55 ms. Allocated memory was 200.3 MB in the beginning and 249.6 MB in the end (delta: 49.3 MB). Free memory was 152.3 MB in the beginning and 103.6 MB in the end (delta: 48.7 MB). Peak memory consumption was 98.0 MB. Max. memory is 7.1 GB. [2020-09-25 02:19:05,859 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 144.7 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 370.29 ms. Allocated memory is still 144.7 MB. Free memory was 100.7 MB in the beginning and 90.2 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 139.53 ms. Allocated memory was 144.7 MB in the beginning and 200.3 MB in the end (delta: 55.6 MB). Free memory was 90.2 MB in the beginning and 178.0 MB in the end (delta: -87.8 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 524.09 ms. Allocated memory is still 200.3 MB. Free memory was 178.0 MB in the beginning and 153.0 MB in the end (delta: 25.0 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4273.55 ms. Allocated memory was 200.3 MB in the beginning and 249.6 MB in the end (delta: 49.3 MB). Free memory was 152.3 MB in the beginning and 103.6 MB in the end (delta: 48.7 MB). Peak memory consumption was 98.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 9]: 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: 35]: Loop Invariant Derived loop invariant: found <= 1 && 0 <= found - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: found <= 1 && 0 <= found - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: found <= 1 && 0 <= found - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: found <= 1 && 0 <= found - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: found <= 1 && 0 <= found - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 110 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.9s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 265 SDtfs, 83 SDslu, 237 SDs, 0 SdLazy, 282 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=105occurred 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, 3 MinimizatonAttempts, 10 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 13 PreInvPairs, 20 NumberOfFragments, 58 HoareAnnotationTreeSize, 13 FomulaSimplifications, 22 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 24 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 133 NumberOfCodeBlocks, 133 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 130 ConstructedInterpolants, 0 QuantifiedInterpolants, 7710 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 2/2 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...