/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 12:36:38,698 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:36:38,702 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:36:38,739 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:36:38,740 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:36:38,749 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:36:38,751 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:36:38,755 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:36:38,758 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:36:38,761 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:36:38,763 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:36:38,764 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:36:38,765 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:36:38,768 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:36:38,770 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:36:38,772 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:36:38,774 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:36:38,775 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:36:38,777 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:36:38,785 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:36:38,788 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:36:38,789 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:36:38,790 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:36:38,791 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:36:38,806 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:36:38,807 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:36:38,807 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:36:38,808 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:36:38,808 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:36:38,815 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:36:38,815 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:36:38,816 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:36:38,820 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:36:38,821 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:36:38,822 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:36:38,822 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:36:38,823 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:36:38,824 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:36:38,824 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:36:38,825 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:36:38,827 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:36:38,828 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-21 12:36:38,877 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:36:38,877 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:36:38,879 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:36:38,880 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:36:38,880 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:36:38,880 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:36:38,881 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 12:36:38,881 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:36:38,881 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 12:36:38,881 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:36:38,882 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:36:38,882 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:36:38,882 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:36:38,883 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 12:36:38,883 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:36:38,883 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:36:38,883 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:36:38,884 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:36:38,884 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:36:38,884 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:36:38,884 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:36:38,884 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:36:38,885 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:36:38,885 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:36:38,885 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:36:38,885 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:36:38,885 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:36:38,886 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:36:38,886 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:36:38,886 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-21 12:36:39,353 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:36:39,383 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:36:39,388 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:36:39,390 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:36:39,391 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:36:39,393 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+cfa-reducer.c [2020-09-21 12:36:39,482 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c84751c16/b397c18a84c249ec959deabc5c34cf3a/FLAG6ecd2b470 [2020-09-21 12:36:40,081 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:36:40,082 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+cfa-reducer.c [2020-09-21 12:36:40,093 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c84751c16/b397c18a84c249ec959deabc5c34cf3a/FLAG6ecd2b470 [2020-09-21 12:36:40,384 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c84751c16/b397c18a84c249ec959deabc5c34cf3a [2020-09-21 12:36:40,399 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:36:40,405 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:36:40,406 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:36:40,406 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:36:40,412 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:36:40,414 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:36:40" (1/1) ... [2020-09-21 12:36:40,419 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c49d532 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:36:40, skipping insertion in model container [2020-09-21 12:36:40,419 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:36:40" (1/1) ... [2020-09-21 12:36:40,429 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:36:40,479 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:36:40,978 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:36:41,075 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:36:41,147 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:36:41,170 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:36:41,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:36:41 WrapperNode [2020-09-21 12:36:41,171 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:36:41,172 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:36:41,172 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:36:41,172 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:36:41,187 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:36:41" (1/1) ... [2020-09-21 12:36:41,187 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:36:41" (1/1) ... [2020-09-21 12:36:41,208 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:36:41" (1/1) ... [2020-09-21 12:36:41,208 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:36:41" (1/1) ... [2020-09-21 12:36:41,253 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:36:41" (1/1) ... [2020-09-21 12:36:41,257 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:36:41" (1/1) ... [2020-09-21 12:36:41,261 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:36:41" (1/1) ... [2020-09-21 12:36:41,267 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:36:41,268 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:36:41,268 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:36:41,268 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:36:41,269 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:36:41" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:36:41,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:36:41,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:36:41,361 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:36:41,361 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:36:41,361 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_89 [2020-09-21 12:36:41,362 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2020-09-21 12:36:41,362 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:36:41,362 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-21 12:36:41,362 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 12:36:41,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 12:36:41,363 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-21 12:36:41,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-21 12:36:41,363 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 12:36:41,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:36:41,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:36:41,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 12:36:41,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-21 12:36:44,165 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:36:44,165 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-21 12:36:44,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:36:44 BoogieIcfgContainer [2020-09-21 12:36:44,172 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:36:44,175 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:36:44,175 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:36:44,181 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:36:44,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:36:40" (1/3) ... [2020-09-21 12:36:44,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bc35f57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:36:44, skipping insertion in model container [2020-09-21 12:36:44,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:36:41" (2/3) ... [2020-09-21 12:36:44,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bc35f57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:36:44, skipping insertion in model container [2020-09-21 12:36:44,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:36:44" (3/3) ... [2020-09-21 12:36:44,186 INFO L109 eAbstractionObserver]: Analyzing ICFG aiob_4.c.v+cfa-reducer.c [2020-09-21 12:36:44,198 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:36:44,209 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 12:36:44,230 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 12:36:44,256 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:36:44,256 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:36:44,256 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:36:44,257 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:36:44,257 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:36:44,257 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:36:44,257 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:36:44,257 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:36:44,278 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-09-21 12:36:44,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-21 12:36:44,285 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:36:44,287 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:36:44,287 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:36:44,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:36:44,294 INFO L82 PathProgramCache]: Analyzing trace with hash 316900320, now seen corresponding path program 1 times [2020-09-21 12:36:44,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:36:44,304 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1477269366] [2020-09-21 12:36:44,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:36:44,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:36:44,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:45,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:36:45,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 12:36:45,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:36:45,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 709 [2020-09-21 12:36:45,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:36:45,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:36:45,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 12:36:45,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:36:45,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-21 12:36:45,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:36:45,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:36:45,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:45,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:36:45,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:36:45,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:36:45,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-21 12:36:45,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:36:45,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:36:45,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:36:45,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:36:45,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:36:45,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:36:45,496 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1477269366] [2020-09-21 12:36:45,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:36:45,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 12:36:45,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025761087] [2020-09-21 12:36:45,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:36:45,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:36:45,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:36:45,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:36:45,529 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 5 states. [2020-09-21 12:36:47,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:36:47,776 INFO L93 Difference]: Finished difference Result 46 states and 56 transitions. [2020-09-21 12:36:47,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 12:36:47,779 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-21 12:36:47,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:36:47,797 INFO L225 Difference]: With dead ends: 46 [2020-09-21 12:36:47,797 INFO L226 Difference]: Without dead ends: 24 [2020-09-21 12:36:47,802 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:36:47,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-09-21 12:36:47,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 18. [2020-09-21 12:36:47,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-09-21 12:36:47,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2020-09-21 12:36:47,845 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 13 [2020-09-21 12:36:47,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:36:47,846 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2020-09-21 12:36:47,846 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:36:47,846 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-09-21 12:36:47,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-21 12:36:47,847 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:36:47,847 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:36:47,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:36:47,848 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:36:47,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:36:47,849 INFO L82 PathProgramCache]: Analyzing trace with hash 316483246, now seen corresponding path program 1 times [2020-09-21 12:36:47,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:36:47,850 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1956939109] [2020-09-21 12:36:47,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:36:47,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:36:47,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:48,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:36:48,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 12:36:48,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:36:48,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 460 [2020-09-21 12:36:48,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:36:48,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:36:48,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-21 12:36:48,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 12:36:48,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:36:48,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:36:48,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:36:48,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:48,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:36:48,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:36:48,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:36:48,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-21 12:36:48,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:36:48,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:36:48,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:36:48,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:36:48,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:36:48,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:36:48,467 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1956939109] [2020-09-21 12:36:48,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:36:48,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 12:36:48,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048396275] [2020-09-21 12:36:48,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:36:48,471 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:36:48,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:36:48,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:36:48,472 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 5 states. [2020-09-21 12:36:50,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:36:50,684 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2020-09-21 12:36:50,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 12:36:50,685 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-21 12:36:50,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:36:50,686 INFO L225 Difference]: With dead ends: 28 [2020-09-21 12:36:50,687 INFO L226 Difference]: Without dead ends: 26 [2020-09-21 12:36:50,688 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:36:50,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-09-21 12:36:50,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 20. [2020-09-21 12:36:50,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-09-21 12:36:50,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2020-09-21 12:36:50,694 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 13 [2020-09-21 12:36:50,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:36:50,695 INFO L479 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2020-09-21 12:36:50,695 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:36:50,695 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2020-09-21 12:36:50,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-21 12:36:50,698 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:36:50,698 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:36:50,699 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 12:36:50,699 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:36:50,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:36:50,699 INFO L82 PathProgramCache]: Analyzing trace with hash 625969832, now seen corresponding path program 1 times [2020-09-21 12:36:50,700 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:36:50,700 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1816866765] [2020-09-21 12:36:50,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:36:50,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:36:50,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:51,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:36:51,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-21 12:36:51,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:36:51,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 763 [2020-09-21 12:36:51,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:36:51,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:36:51,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 12:36:51,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-21 12:36:51,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:36:51,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:36:51,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:36:51,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:51,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:36:51,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:36:51,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:36:51,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 12:36:51,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:36:51,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:36:51,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:36:51,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:36:51,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:36:51,720 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:36:51,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1816866765] [2020-09-21 12:36:51,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:36:51,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-21 12:36:51,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56419822] [2020-09-21 12:36:51,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 12:36:51,722 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:36:51,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 12:36:51,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:36:51,723 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 6 states. [2020-09-21 12:36:55,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:36:55,930 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2020-09-21 12:36:55,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 12:36:55,931 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-09-21 12:36:55,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:36:55,932 INFO L225 Difference]: With dead ends: 40 [2020-09-21 12:36:55,932 INFO L226 Difference]: Without dead ends: 30 [2020-09-21 12:36:55,933 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-21 12:36:55,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-21 12:36:55,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 26. [2020-09-21 12:36:55,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-09-21 12:36:55,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2020-09-21 12:36:55,940 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 19 [2020-09-21 12:36:55,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:36:55,940 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2020-09-21 12:36:55,941 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 12:36:55,941 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2020-09-21 12:36:55,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-21 12:36:55,942 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:36:55,942 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:36:55,942 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 12:36:55,942 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:36:55,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:36:55,943 INFO L82 PathProgramCache]: Analyzing trace with hash 1878874992, now seen corresponding path program 2 times [2020-09-21 12:36:55,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:36:55,943 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1415114445] [2020-09-21 12:36:55,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:36:55,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:36:56,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:56,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:57,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:36:57,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-21 12:36:57,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:36:57,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1811 [2020-09-21 12:36:57,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:36:57,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:36:57,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 12:36:57,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-21 12:36:57,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:36:57,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:36:57,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:36:57,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:57,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:36:57,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:36:57,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:36:57,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-21 12:36:57,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:36:57,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:36:57,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:36:57,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:36:57,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:36:57,962 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:36:57,963 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1415114445] [2020-09-21 12:36:57,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:36:57,963 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 12:36:57,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758927702] [2020-09-21 12:36:57,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:36:57,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:36:57,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:36:57,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:36:57,965 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 7 states. [2020-09-21 12:37:04,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:37:04,257 INFO L93 Difference]: Finished difference Result 46 states and 49 transitions. [2020-09-21 12:37:04,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 12:37:04,258 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2020-09-21 12:37:04,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:37:04,259 INFO L225 Difference]: With dead ends: 46 [2020-09-21 12:37:04,259 INFO L226 Difference]: Without dead ends: 36 [2020-09-21 12:37:04,260 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-09-21 12:37:04,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-09-21 12:37:04,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2020-09-21 12:37:04,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-09-21 12:37:04,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2020-09-21 12:37:04,276 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 25 [2020-09-21 12:37:04,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:37:04,278 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2020-09-21 12:37:04,278 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:37:04,278 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2020-09-21 12:37:04,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-21 12:37:04,279 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:37:04,280 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:37:04,280 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 12:37:04,280 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:37:04,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:37:04,281 INFO L82 PathProgramCache]: Analyzing trace with hash -1460832712, now seen corresponding path program 3 times [2020-09-21 12:37:04,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:37:04,281 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [404482165] [2020-09-21 12:37:04,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:37:04,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:04,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:04,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:05,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:05,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-21 12:37:05,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:37:05,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1404 [2020-09-21 12:37:05,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:05,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:37:05,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 12:37:05,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-21 12:37:05,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:37:05,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:37:05,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:05,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:05,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:05,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:37:05,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:37:05,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:37:05,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:05,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:37:05,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:37:05,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:37:05,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:37:05,954 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:37:05,955 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [404482165] [2020-09-21 12:37:05,955 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:37:05,955 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-21 12:37:05,956 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124321103] [2020-09-21 12:37:05,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 12:37:05,956 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:37:05,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 12:37:05,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-21 12:37:05,957 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand 8 states. [2020-09-21 12:37:14,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:37:14,267 INFO L93 Difference]: Finished difference Result 52 states and 55 transitions. [2020-09-21 12:37:14,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 12:37:14,267 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-09-21 12:37:14,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:37:14,268 INFO L225 Difference]: With dead ends: 52 [2020-09-21 12:37:14,268 INFO L226 Difference]: Without dead ends: 42 [2020-09-21 12:37:14,270 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-09-21 12:37:14,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-21 12:37:14,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 38. [2020-09-21 12:37:14,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-21 12:37:14,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2020-09-21 12:37:14,283 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 31 [2020-09-21 12:37:14,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:37:14,284 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2020-09-21 12:37:14,285 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 12:37:14,285 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2020-09-21 12:37:14,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-21 12:37:14,287 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:37:14,288 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:37:14,288 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 12:37:14,288 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:37:14,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:37:14,288 INFO L82 PathProgramCache]: Analyzing trace with hash 599808768, now seen corresponding path program 4 times [2020-09-21 12:37:14,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:37:14,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [994408975] [2020-09-21 12:37:14,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:37:14,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:14,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:14,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:15,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:15,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-21 12:37:15,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:37:15,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1378 [2020-09-21 12:37:15,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:15,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 12:37:15,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 12:37:15,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-21 12:37:15,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:37:15,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:37:15,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:15,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:15,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:15,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:37:15,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:37:15,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-21 12:37:15,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:15,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:37:15,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:37:15,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:37:15,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:37:15,907 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 8 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:37:15,908 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [994408975] [2020-09-21 12:37:15,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:37:15,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-21 12:37:15,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11135267] [2020-09-21 12:37:15,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 12:37:15,910 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:37:15,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 12:37:15,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-21 12:37:15,911 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand 9 states. [2020-09-21 12:37:26,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:37:26,290 INFO L93 Difference]: Finished difference Result 58 states and 61 transitions. [2020-09-21 12:37:26,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 12:37:26,291 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2020-09-21 12:37:26,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:37:26,292 INFO L225 Difference]: With dead ends: 58 [2020-09-21 12:37:26,293 INFO L226 Difference]: Without dead ends: 48 [2020-09-21 12:37:26,295 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2020-09-21 12:37:26,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-21 12:37:26,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2020-09-21 12:37:26,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-09-21 12:37:26,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions. [2020-09-21 12:37:26,308 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 37 [2020-09-21 12:37:26,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:37:26,308 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions. [2020-09-21 12:37:26,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 12:37:26,312 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions. [2020-09-21 12:37:26,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-21 12:37:26,314 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:37:26,314 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:37:26,314 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 12:37:26,315 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:37:26,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:37:26,315 INFO L82 PathProgramCache]: Analyzing trace with hash 431393224, now seen corresponding path program 5 times [2020-09-21 12:37:26,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:37:26,316 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1810550775] [2020-09-21 12:37:26,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:37:26,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:26,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:27,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:27,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-21 12:37:27,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:37:27,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1028 [2020-09-21 12:37:27,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:27,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 12:37:27,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 12:37:27,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-21 12:37:27,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:37:27,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:37:27,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:27,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:27,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:27,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:37:27,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:37:27,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 12:37:27,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:27,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:37:27,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:37:27,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:37:27,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:37:27,605 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 26 proven. 19 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-09-21 12:37:27,606 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1810550775] [2020-09-21 12:37:27,606 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:37:27,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-21 12:37:27,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197884091] [2020-09-21 12:37:27,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 12:37:27,607 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:37:27,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 12:37:27,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-21 12:37:27,608 INFO L87 Difference]: Start difference. First operand 44 states and 45 transitions. Second operand 9 states. [2020-09-21 12:37:36,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:37:36,047 INFO L93 Difference]: Finished difference Result 50 states and 52 transitions. [2020-09-21 12:37:36,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-21 12:37:36,053 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 43 [2020-09-21 12:37:36,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:37:36,053 INFO L225 Difference]: With dead ends: 50 [2020-09-21 12:37:36,053 INFO L226 Difference]: Without dead ends: 0 [2020-09-21 12:37:36,054 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2020-09-21 12:37:36,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-21 12:37:36,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-21 12:37:36,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-21 12:37:36,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-21 12:37:36,055 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 43 [2020-09-21 12:37:36,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:37:36,056 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-21 12:37:36,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 12:37:36,056 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-21 12:37:36,056 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-21 12:37:36,056 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 12:37:36,061 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-21 12:37:36,484 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 32 [2020-09-21 12:37:36,488 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-21 12:37:36,489 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~Id_MCDC_93~0 |old(~Id_MCDC_93~0)|) (= |#t~string0.offset| |old(#t~string0.offset)|) (= |#t~string44.offset| |old(#t~string44.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= ~__return_main~0 |old(~__return_main~0)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string44.base| |old(#t~string44.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|)) [2020-09-21 12:37:36,489 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-21 12:37:36,489 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-21 12:37:36,489 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (= ~Id_MCDC_93~0 0) [2020-09-21 12:37:36,490 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-21 12:37:36,490 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-21 12:37:36,490 INFO L268 CegarLoopResult]: For program point L159(lines 159 222) no Hoare annotation was computed. [2020-09-21 12:37:36,490 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 131 223) no Hoare annotation was computed. [2020-09-21 12:37:36,490 INFO L268 CegarLoopResult]: For program point L180(lines 180 215) no Hoare annotation was computed. [2020-09-21 12:37:36,490 INFO L268 CegarLoopResult]: For program point L178(lines 178 220) no Hoare annotation was computed. [2020-09-21 12:37:36,490 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 131 223) no Hoare annotation was computed. [2020-09-21 12:37:36,491 INFO L268 CegarLoopResult]: For program point L197(lines 197 207) no Hoare annotation was computed. [2020-09-21 12:37:36,491 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 191) no Hoare annotation was computed. [2020-09-21 12:37:36,491 INFO L268 CegarLoopResult]: For program point L191(line 191) no Hoare annotation was computed. [2020-09-21 12:37:36,491 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 131 223) the Hoare annotation is: (or (and (= ~Id_MCDC_93~0 |old(~Id_MCDC_93~0)|) (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) (not (= |old(~Id_MCDC_93~0)| 0))) [2020-09-21 12:37:36,491 INFO L268 CegarLoopResult]: For program point L189(lines 189 208) no Hoare annotation was computed. [2020-09-21 12:37:36,492 INFO L264 CegarLoopResult]: At program point L214(lines 180 215) the Hoare annotation is: (let ((.cse0 (<= ~Id_MCDC_93~0 main_~Id_MCDC_89__Id_MCDC_96~0)) (.cse1 (= main_~Id_MCDC_89____CPAchecker_TMP_1~0 1)) (.cse2 (<= main_~Id_MCDC_89__Id_MCDC_96~0 ~Id_MCDC_93~0)) (.cse3 (= (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) (+ |main_~#Id_MCDC_89__Id_MCDC_95~0.offset| 492)) 0))) (or (and .cse0 .cse1 (<= ~Id_MCDC_93~0 2) .cse2 (<= 0 main_~Id_MCDC_89__Id_MCDC_96~0) .cse3) (not (= |old(~Id_MCDC_93~0)| 0)) (and (<= (+ (* 4294967296 (div (+ main_~Id_MCDC_89__Id_MCDC_96~0 4294967254) 4294967296)) 1) main_~Id_MCDC_89__Id_MCDC_96~0) .cse0 .cse1 .cse2 .cse3))) [2020-09-21 12:37:36,492 INFO L264 CegarLoopResult]: At program point L202(lines 165 221) the Hoare annotation is: (let ((.cse0 (= (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) (+ |main_~#Id_MCDC_89__Id_MCDC_95~0.offset| 492)) 0))) (or (not (= |old(~Id_MCDC_93~0)| 0)) (and (<= (+ (* 4294967296 (div (+ main_~Id_MCDC_89__Id_MCDC_96~0 4294967254) 4294967296)) 1) main_~Id_MCDC_89__Id_MCDC_96~0) (<= ~Id_MCDC_93~0 (+ (* 4294967296 (div ~Id_MCDC_93~0 4294967296)) 41)) .cse0) (and (= ~Id_MCDC_93~0 0) (= main_~Id_MCDC_89__Id_MCDC_96~0 0) .cse0))) [2020-09-21 12:37:36,508 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-21 12:37:36,509 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-21 12:37:36,517 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-21 12:37:36,517 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-21 12:37:36,520 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-21 12:37:36,520 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-21 12:37:36,521 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-21 12:37:36,521 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-21 12:37:36,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 12:37:36 BoogieIcfgContainer [2020-09-21 12:37:36,524 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 12:37:36,526 INFO L168 Benchmark]: Toolchain (without parser) took 56125.55 ms. Allocated memory was 140.0 MB in the beginning and 364.4 MB in the end (delta: 224.4 MB). Free memory was 102.1 MB in the beginning and 320.2 MB in the end (delta: -218.1 MB). Peak memory consumption was 217.4 MB. Max. memory is 7.1 GB. [2020-09-21 12:37:36,527 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 12:37:36,529 INFO L168 Benchmark]: CACSL2BoogieTranslator took 765.39 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 101.5 MB in the beginning and 175.6 MB in the end (delta: -74.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. [2020-09-21 12:37:36,529 INFO L168 Benchmark]: Boogie Preprocessor took 95.70 ms. Allocated memory is still 202.4 MB. Free memory was 175.6 MB in the beginning and 171.7 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. [2020-09-21 12:37:36,530 INFO L168 Benchmark]: RCFGBuilder took 2906.23 ms. Allocated memory is still 202.4 MB. Free memory was 171.7 MB in the beginning and 98.9 MB in the end (delta: 72.8 MB). Peak memory consumption was 72.8 MB. Max. memory is 7.1 GB. [2020-09-21 12:37:36,531 INFO L168 Benchmark]: TraceAbstraction took 52348.83 ms. Allocated memory was 202.4 MB in the beginning and 364.4 MB in the end (delta: 162.0 MB). Free memory was 98.2 MB in the beginning and 320.2 MB in the end (delta: -222.0 MB). Peak memory consumption was 151.1 MB. Max. memory is 7.1 GB. [2020-09-21 12:37:36,536 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 765.39 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 101.5 MB in the beginning and 175.6 MB in the end (delta: -74.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 95.70 ms. Allocated memory is still 202.4 MB. Free memory was 175.6 MB in the beginning and 171.7 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 2906.23 ms. Allocated memory is still 202.4 MB. Free memory was 171.7 MB in the beginning and 98.9 MB in the end (delta: 72.8 MB). Peak memory consumption was 72.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 52348.83 ms. Allocated memory was 202.4 MB in the beginning and 364.4 MB in the end (delta: 162.0 MB). Free memory was 98.2 MB in the beginning and 320.2 MB in the end (delta: -222.0 MB). Peak memory consumption was 151.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 191]: 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: 180]: Loop Invariant [2020-09-21 12:37:36,548 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-21 12:37:36,548 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-21 12:37:36,552 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-21 12:37:36,552 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: ((((((Id_MCDC_93 <= Id_MCDC_89__Id_MCDC_96 && Id_MCDC_89____CPAchecker_TMP_1 == 1) && Id_MCDC_93 <= 2) && Id_MCDC_89__Id_MCDC_96 <= Id_MCDC_93) && 0 <= Id_MCDC_89__Id_MCDC_96) && unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 492] == 0) || !(\old(Id_MCDC_93) == 0)) || ((((4294967296 * ((Id_MCDC_89__Id_MCDC_96 + 4294967254) / 4294967296) + 1 <= Id_MCDC_89__Id_MCDC_96 && Id_MCDC_93 <= Id_MCDC_89__Id_MCDC_96) && Id_MCDC_89____CPAchecker_TMP_1 == 1) && Id_MCDC_89__Id_MCDC_96 <= Id_MCDC_93) && unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 492] == 0) - InvariantResult [Line: 165]: Loop Invariant [2020-09-21 12:37:36,554 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-21 12:37:36,555 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-21 12:37:36,555 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-21 12:37:36,556 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: (!(\old(Id_MCDC_93) == 0) || ((4294967296 * ((Id_MCDC_89__Id_MCDC_96 + 4294967254) / 4294967296) + 1 <= Id_MCDC_89__Id_MCDC_96 && Id_MCDC_93 <= 4294967296 * (Id_MCDC_93 / 4294967296) + 41) && unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 492] == 0)) || ((Id_MCDC_93 == 0 && Id_MCDC_89__Id_MCDC_96 == 0) && unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 492] == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 51.8s, OverallIterations: 7, TraceHistogramMax: 6, AutomataDifference: 42.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 85 SDtfs, 126 SDslu, 230 SDs, 0 SdLazy, 554 SolverSat, 57 SolverUnsat, 20 SolverUnknown, 0 SolverNotchecked, 41.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 84 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=6, 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, 7 MinimizatonAttempts, 28 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 17 NumberOfFragments, 167 HoareAnnotationTreeSize, 6 FomulaSimplifications, 1117 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 6 FomulaSimplificationsInter, 280 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 8.7s InterpolantComputationTime, 181 NumberOfCodeBlocks, 181 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 174 ConstructedInterpolants, 0 QuantifiedInterpolants, 37164 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 2 PerfectInterpolantSequences, 86/195 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...