/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 enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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-acceleration/underapprox_2-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 00:43:44,972 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 00:43:44,975 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 00:43:45,000 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 00:43:45,001 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 00:43:45,002 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 00:43:45,003 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 00:43:45,005 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 00:43:45,007 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 00:43:45,008 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 00:43:45,009 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 00:43:45,010 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 00:43:45,010 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 00:43:45,011 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 00:43:45,013 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 00:43:45,014 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 00:43:45,015 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 00:43:45,016 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 00:43:45,017 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 00:43:45,019 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 00:43:45,021 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 00:43:45,022 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 00:43:45,023 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 00:43:45,024 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 00:43:45,026 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 00:43:45,027 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 00:43:45,027 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 00:43:45,028 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 00:43:45,028 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 00:43:45,029 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-08-22 00:43:45,034 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 00:43:45,035 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 00:43:45,035 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 00:43:45,036 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 [2020-08-22 00:43:45,079 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 00:43:45,081 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 00:43:45,082 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 00:43:45,083 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 00:43:45,083 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 00:43:45,083 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 00:43:45,084 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 00:43:45,084 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 00:43:45,084 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 00:43:45,084 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 00:43:45,085 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 00:43:45,086 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 00:43:45,086 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 00:43:45,086 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 00:43:45,087 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 00:43:45,087 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 00:43:45,087 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 00:43:45,087 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 00:43:45,088 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 00:43:45,088 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 00:43:45,088 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 00:43:45,088 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 00:43:45,089 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 00:43:45,089 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 00:43:45,089 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 00:43:45,089 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 00:43:45,089 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 00:43:45,090 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 00:43:45,090 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 00:43:45,090 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 -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; [2020-08-22 00:43:45,406 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 00:43:45,423 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 00:43:45,427 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 00:43:45,430 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 00:43:45,431 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 00:43:45,432 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/underapprox_2-2.c [2020-08-22 00:43:45,504 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f0d160dd0/df86a5edcb1a47f5824f2134ff3601bc/FLAGc1fdceda4 [2020-08-22 00:43:45,944 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 00:43:45,945 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-acceleration/underapprox_2-2.c [2020-08-22 00:43:45,949 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f0d160dd0/df86a5edcb1a47f5824f2134ff3601bc/FLAGc1fdceda4 [2020-08-22 00:43:46,328 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f0d160dd0/df86a5edcb1a47f5824f2134ff3601bc [2020-08-22 00:43:46,338 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 00:43:46,340 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 00:43:46,341 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 00:43:46,341 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 00:43:46,344 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 00:43:46,345 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 12:43:46" (1/1) ... [2020-08-22 00:43:46,348 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75a18185 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:43:46, skipping insertion in model container [2020-08-22 00:43:46,348 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 12:43:46" (1/1) ... [2020-08-22 00:43:46,356 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 00:43:46,374 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 00:43:46,536 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 00:43:46,541 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 00:43:46,556 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 00:43:46,571 INFO L208 MainTranslator]: Completed translation [2020-08-22 00:43:46,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:43:46 WrapperNode [2020-08-22 00:43:46,571 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 00:43:46,572 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 00:43:46,572 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 00:43:46,572 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 00:43:46,586 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:43:46" (1/1) ... [2020-08-22 00:43:46,586 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:43:46" (1/1) ... [2020-08-22 00:43:46,591 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:43:46" (1/1) ... [2020-08-22 00:43:46,592 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:43:46" (1/1) ... [2020-08-22 00:43:46,595 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:43:46" (1/1) ... [2020-08-22 00:43:46,600 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:43:46" (1/1) ... [2020-08-22 00:43:46,601 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:43:46" (1/1) ... [2020-08-22 00:43:46,686 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 00:43:46,687 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 00:43:46,687 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 00:43:46,687 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 00:43:46,688 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:43:46" (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 [2020-08-22 00:43:46,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 00:43:46,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 00:43:46,749 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 00:43:46,749 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 00:43:46,749 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 00:43:46,750 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 00:43:46,750 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 00:43:46,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 00:43:46,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 00:43:46,907 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 00:43:46,908 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-22 00:43:46,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 12:43:46 BoogieIcfgContainer [2020-08-22 00:43:46,912 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 00:43:46,913 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 00:43:46,913 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 00:43:46,916 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 00:43:46,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 12:43:46" (1/3) ... [2020-08-22 00:43:46,917 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f9f6dcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 12:43:46, skipping insertion in model container [2020-08-22 00:43:46,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:43:46" (2/3) ... [2020-08-22 00:43:46,918 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f9f6dcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 12:43:46, skipping insertion in model container [2020-08-22 00:43:46,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 12:43:46" (3/3) ... [2020-08-22 00:43:46,920 INFO L109 eAbstractionObserver]: Analyzing ICFG underapprox_2-2.c [2020-08-22 00:43:46,931 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 00:43:46,938 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 00:43:46,950 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 00:43:46,973 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 00:43:46,973 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 00:43:46,974 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 00:43:46,974 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 00:43:46,974 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 00:43:46,974 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 00:43:46,974 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 00:43:46,974 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 00:43:46,996 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2020-08-22 00:43:47,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-08-22 00:43:47,005 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:43:47,006 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:43:47,006 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:43:47,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:43:47,013 INFO L82 PathProgramCache]: Analyzing trace with hash 1846144830, now seen corresponding path program 1 times [2020-08-22 00:43:47,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:43:47,021 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1590600849] [2020-08-22 00:43:47,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:43:47,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:47,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:43:47,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:47,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:43:47,213 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1590600849] [2020-08-22 00:43:47,215 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:43:47,215 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 00:43:47,216 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619300946] [2020-08-22 00:43:47,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 00:43:47,222 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:43:47,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 00:43:47,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 00:43:47,248 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 3 states. [2020-08-22 00:43:47,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:43:47,293 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2020-08-22 00:43:47,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 00:43:47,295 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-08-22 00:43:47,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:43:47,304 INFO L225 Difference]: With dead ends: 29 [2020-08-22 00:43:47,304 INFO L226 Difference]: Without dead ends: 12 [2020-08-22 00:43:47,308 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 00:43:47,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-08-22 00:43:47,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-08-22 00:43:47,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-08-22 00:43:47,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2020-08-22 00:43:47,349 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2020-08-22 00:43:47,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:43:47,349 INFO L479 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2020-08-22 00:43:47,350 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 00:43:47,350 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-08-22 00:43:47,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-08-22 00:43:47,350 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:43:47,351 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:43:47,351 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 00:43:47,351 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:43:47,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:43:47,352 INFO L82 PathProgramCache]: Analyzing trace with hash 1432376145, now seen corresponding path program 1 times [2020-08-22 00:43:47,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:43:47,352 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1544189565] [2020-08-22 00:43:47,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:43:47,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:47,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:43:47,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:47,438 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:43:47,439 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1544189565] [2020-08-22 00:43:47,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:43:47,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-08-22 00:43:47,440 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250017059] [2020-08-22 00:43:47,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 00:43:47,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:43:47,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 00:43:47,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-22 00:43:47,443 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 4 states. [2020-08-22 00:43:47,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:43:47,462 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2020-08-22 00:43:47,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 00:43:47,463 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-08-22 00:43:47,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:43:47,464 INFO L225 Difference]: With dead ends: 18 [2020-08-22 00:43:47,464 INFO L226 Difference]: Without dead ends: 13 [2020-08-22 00:43:47,465 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-22 00:43:47,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-08-22 00:43:47,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-08-22 00:43:47,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-08-22 00:43:47,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2020-08-22 00:43:47,470 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2020-08-22 00:43:47,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:43:47,471 INFO L479 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2020-08-22 00:43:47,471 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 00:43:47,471 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-08-22 00:43:47,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-08-22 00:43:47,472 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:43:47,472 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:43:47,472 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 00:43:47,473 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:43:47,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:43:47,473 INFO L82 PathProgramCache]: Analyzing trace with hash 1490448798, now seen corresponding path program 2 times [2020-08-22 00:43:47,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:43:47,474 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [48997529] [2020-08-22 00:43:47,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:43:47,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:47,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:43:47,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:47,599 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:43:47,599 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [48997529] [2020-08-22 00:43:47,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:43:47,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-08-22 00:43:47,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956754503] [2020-08-22 00:43:47,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 00:43:47,601 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:43:47,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 00:43:47,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 00:43:47,602 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 5 states. [2020-08-22 00:43:47,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:43:47,624 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2020-08-22 00:43:47,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 00:43:47,625 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-08-22 00:43:47,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:43:47,626 INFO L225 Difference]: With dead ends: 19 [2020-08-22 00:43:47,626 INFO L226 Difference]: Without dead ends: 14 [2020-08-22 00:43:47,627 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 00:43:47,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-08-22 00:43:47,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-08-22 00:43:47,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-08-22 00:43:47,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2020-08-22 00:43:47,632 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2020-08-22 00:43:47,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:43:47,633 INFO L479 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2020-08-22 00:43:47,633 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 00:43:47,633 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2020-08-22 00:43:47,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-08-22 00:43:47,634 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:43:47,634 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:43:47,634 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 00:43:47,635 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:43:47,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:43:47,635 INFO L82 PathProgramCache]: Analyzing trace with hash -1004266255, now seen corresponding path program 3 times [2020-08-22 00:43:47,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:43:47,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [625230647] [2020-08-22 00:43:47,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:43:47,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:47,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:43:47,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:47,748 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:43:47,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [625230647] [2020-08-22 00:43:47,749 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:43:47,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-22 00:43:47,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710961384] [2020-08-22 00:43:47,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 00:43:47,750 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:43:47,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 00:43:47,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-08-22 00:43:47,751 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 6 states. [2020-08-22 00:43:47,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:43:47,778 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2020-08-22 00:43:47,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 00:43:47,778 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-08-22 00:43:47,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:43:47,779 INFO L225 Difference]: With dead ends: 20 [2020-08-22 00:43:47,779 INFO L226 Difference]: Without dead ends: 15 [2020-08-22 00:43:47,780 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-08-22 00:43:47,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-08-22 00:43:47,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-08-22 00:43:47,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-08-22 00:43:47,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-08-22 00:43:47,789 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2020-08-22 00:43:47,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:43:47,789 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-08-22 00:43:47,789 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 00:43:47,789 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-08-22 00:43:47,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-22 00:43:47,790 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:43:47,790 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:43:47,790 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 00:43:47,791 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:43:47,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:43:47,791 INFO L82 PathProgramCache]: Analyzing trace with hash -1031021570, now seen corresponding path program 4 times [2020-08-22 00:43:47,791 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:43:47,792 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [145094974] [2020-08-22 00:43:47,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:43:47,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:47,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:43:47,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:47,950 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:43:47,951 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [145094974] [2020-08-22 00:43:47,951 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:43:47,951 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-22 00:43:47,952 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839981457] [2020-08-22 00:43:47,952 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 00:43:47,953 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:43:47,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 00:43:47,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-08-22 00:43:47,954 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 7 states. [2020-08-22 00:43:47,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:43:47,993 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2020-08-22 00:43:47,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 00:43:47,994 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-08-22 00:43:47,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:43:47,995 INFO L225 Difference]: With dead ends: 21 [2020-08-22 00:43:47,995 INFO L226 Difference]: Without dead ends: 16 [2020-08-22 00:43:47,995 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-08-22 00:43:47,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-08-22 00:43:48,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-08-22 00:43:48,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-08-22 00:43:48,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-08-22 00:43:48,001 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2020-08-22 00:43:48,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:43:48,002 INFO L479 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-08-22 00:43:48,002 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 00:43:48,002 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-08-22 00:43:48,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-08-22 00:43:48,003 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:43:48,003 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:43:48,003 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 00:43:48,004 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:43:48,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:43:48,004 INFO L82 PathProgramCache]: Analyzing trace with hash -1860436335, now seen corresponding path program 5 times [2020-08-22 00:43:48,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:43:48,005 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1814390259] [2020-08-22 00:43:48,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:43:48,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:48,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:43:48,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:48,174 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:43:48,174 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1814390259] [2020-08-22 00:43:48,175 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:43:48,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-22 00:43:48,175 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750759437] [2020-08-22 00:43:48,176 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 00:43:48,176 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:43:48,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 00:43:48,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-08-22 00:43:48,177 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 8 states. [2020-08-22 00:43:48,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:43:48,225 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2020-08-22 00:43:48,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 00:43:48,226 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2020-08-22 00:43:48,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:43:48,227 INFO L225 Difference]: With dead ends: 22 [2020-08-22 00:43:48,227 INFO L226 Difference]: Without dead ends: 17 [2020-08-22 00:43:48,228 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-08-22 00:43:48,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-08-22 00:43:48,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-08-22 00:43:48,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-08-22 00:43:48,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-08-22 00:43:48,233 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 15 [2020-08-22 00:43:48,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:43:48,234 INFO L479 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-08-22 00:43:48,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 00:43:48,234 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-08-22 00:43:48,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-22 00:43:48,235 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:43:48,235 INFO L422 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:43:48,235 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 00:43:48,236 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:43:48,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:43:48,236 INFO L82 PathProgramCache]: Analyzing trace with hash -1802490274, now seen corresponding path program 6 times [2020-08-22 00:43:48,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:43:48,239 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1911252232] [2020-08-22 00:43:48,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:43:48,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:48,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:43:48,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:48,484 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:43:48,485 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1911252232] [2020-08-22 00:43:48,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:43:48,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-22 00:43:48,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851743632] [2020-08-22 00:43:48,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 00:43:48,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:43:48,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 00:43:48,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-08-22 00:43:48,487 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 12 states. [2020-08-22 00:43:48,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:43:48,579 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2020-08-22 00:43:48,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 00:43:48,579 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 16 [2020-08-22 00:43:48,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:43:48,580 INFO L225 Difference]: With dead ends: 21 [2020-08-22 00:43:48,580 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 00:43:48,581 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-08-22 00:43:48,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 00:43:48,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 00:43:48,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 00:43:48,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 00:43:48,582 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-08-22 00:43:48,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:43:48,582 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 00:43:48,583 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 00:43:48,583 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 00:43:48,583 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 00:43:48,583 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 00:43:48,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-22 00:43:48,690 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-22 00:43:48,691 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-22 00:43:48,691 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-22 00:43:48,691 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-22 00:43:48,691 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-22 00:43:48,691 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-22 00:43:48,692 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 10 20) the Hoare annotation is: true [2020-08-22 00:43:48,692 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 10 20) no Hoare annotation was computed. [2020-08-22 00:43:48,692 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 10 20) no Hoare annotation was computed. [2020-08-22 00:43:48,692 INFO L264 CegarLoopResult]: At program point L14-2(lines 14 17) the Hoare annotation is: (let ((.cse1 (div main_~x~0 4294967296))) (or (let ((.cse0 (* 4294967296 .cse1))) (and (< (+ .cse0 5) main_~x~0) (<= main_~x~0 (+ .cse0 6)) (<= 0 .cse1))) (and (<= main_~x~0 5) (<= 5 main_~x~0)) (and (< 0 (+ .cse1 1)) (<= main_~x~0 4)))) [2020-08-22 00:43:48,693 INFO L264 CegarLoopResult]: At program point L14-3(lines 14 17) the Hoare annotation is: (let ((.cse1 (div main_~x~0 4294967296))) (let ((.cse0 (* 4294967296 .cse1))) (and (< (+ .cse0 5) main_~x~0) (<= main_~x~0 (+ .cse0 6)) (<= 0 .cse1)))) [2020-08-22 00:43:48,693 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2020-08-22 00:43:48,693 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2020-08-22 00:43:48,693 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-08-22 00:43:48,693 INFO L268 CegarLoopResult]: For program point L4(lines 4 6) no Hoare annotation was computed. [2020-08-22 00:43:48,694 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-08-22 00:43:48,694 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2020-08-22 00:43:48,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 12:43:48 BoogieIcfgContainer [2020-08-22 00:43:48,713 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 00:43:48,717 INFO L168 Benchmark]: Toolchain (without parser) took 2376.06 ms. Allocated memory was 147.8 MB in the beginning and 233.3 MB in the end (delta: 85.5 MB). Free memory was 104.2 MB in the beginning and 142.4 MB in the end (delta: -38.1 MB). Peak memory consumption was 47.3 MB. Max. memory is 7.1 GB. [2020-08-22 00:43:48,718 INFO L168 Benchmark]: CDTParser took 0.78 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 00:43:48,719 INFO L168 Benchmark]: CACSL2BoogieTranslator took 231.11 ms. Allocated memory is still 147.8 MB. Free memory was 103.8 MB in the beginning and 94.6 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2020-08-22 00:43:48,720 INFO L168 Benchmark]: Boogie Preprocessor took 114.14 ms. Allocated memory was 147.8 MB in the beginning and 203.9 MB in the end (delta: 56.1 MB). Free memory was 94.6 MB in the beginning and 184.0 MB in the end (delta: -89.4 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. [2020-08-22 00:43:48,721 INFO L168 Benchmark]: RCFGBuilder took 225.21 ms. Allocated memory is still 203.9 MB. Free memory was 184.0 MB in the beginning and 171.9 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 7.1 GB. [2020-08-22 00:43:48,722 INFO L168 Benchmark]: TraceAbstraction took 1800.68 ms. Allocated memory was 203.9 MB in the beginning and 233.3 MB in the end (delta: 29.4 MB). Free memory was 171.3 MB in the beginning and 142.4 MB in the end (delta: 28.9 MB). Peak memory consumption was 58.3 MB. Max. memory is 7.1 GB. [2020-08-22 00:43:48,726 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.78 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 231.11 ms. Allocated memory is still 147.8 MB. Free memory was 103.8 MB in the beginning and 94.6 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 114.14 ms. Allocated memory was 147.8 MB in the beginning and 203.9 MB in the end (delta: 56.1 MB). Free memory was 94.6 MB in the beginning and 184.0 MB in the end (delta: -89.4 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 225.21 ms. Allocated memory is still 203.9 MB. Free memory was 184.0 MB in the beginning and 171.9 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1800.68 ms. Allocated memory was 203.9 MB in the beginning and 233.3 MB in the end (delta: 29.4 MB). Free memory was 171.3 MB in the beginning and 142.4 MB in the end (delta: 28.9 MB). Peak memory consumption was 58.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: 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: 14]: Loop Invariant Derived loop invariant: (((4294967296 * (x / 4294967296) + 5 < x && x <= 4294967296 * (x / 4294967296) + 6) && 0 <= x / 4294967296) || (x <= 5 && 5 <= x)) || (0 < x / 4294967296 + 1 && x <= 4) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.6s, OverallIterations: 7, TraceHistogramMax: 6, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 72 SDtfs, 2 SDslu, 212 SDs, 0 SdLazy, 174 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred 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, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 14 PreInvPairs, 22 NumberOfFragments, 72 HoareAnnotationTreeSize, 14 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 59 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 91 NumberOfCodeBlocks, 91 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 84 ConstructedInterpolants, 0 QuantifiedInterpolants, 4045 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 0/56 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...