/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 false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-89f541c [2020-08-27 21:59:06,320 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-27 21:59:06,324 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-27 21:59:06,366 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-27 21:59:06,367 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-27 21:59:06,374 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-27 21:59:06,378 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-27 21:59:06,381 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-27 21:59:06,384 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-27 21:59:06,387 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-27 21:59:06,388 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-27 21:59:06,389 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-27 21:59:06,389 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-27 21:59:06,392 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-27 21:59:06,395 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-27 21:59:06,396 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-27 21:59:06,398 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-27 21:59:06,399 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-27 21:59:06,401 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-27 21:59:06,409 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-27 21:59:06,411 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-27 21:59:06,412 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-27 21:59:06,413 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-27 21:59:06,414 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-27 21:59:06,426 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-27 21:59:06,427 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-27 21:59:06,427 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-27 21:59:06,433 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-27 21:59:06,433 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-27 21:59:06,434 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-27 21:59:06,435 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-27 21:59:06,435 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-27 21:59:06,439 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-27 21:59:06,440 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-27 21:59:06,441 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-27 21:59:06,441 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-27 21:59:06,443 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-27 21:59:06,444 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-27 21:59:06,444 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-27 21:59:06,446 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-27 21:59:06,446 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-27 21:59:06,447 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 [2020-08-27 21:59:06,494 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-27 21:59:06,494 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-27 21:59:06,496 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-27 21:59:06,496 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-27 21:59:06,496 INFO L138 SettingsManager]: * Use SBE=true [2020-08-27 21:59:06,497 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-27 21:59:06,497 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-27 21:59:06,497 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-27 21:59:06,498 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-27 21:59:06,498 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-27 21:59:06,499 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-27 21:59:06,499 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-27 21:59:06,499 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-27 21:59:06,500 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-27 21:59:06,500 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-27 21:59:06,500 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-27 21:59:06,500 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-27 21:59:06,501 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-27 21:59:06,501 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-27 21:59:06,501 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-27 21:59:06,501 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-27 21:59:06,502 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-27 21:59:06,502 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-27 21:59:06,502 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-27 21:59:06,502 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-27 21:59:06,502 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-27 21:59:06,503 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-27 21:59:06,503 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-27 21:59:06,503 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-27 21:59:06,503 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 -> false [2020-08-27 21:59:06,964 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-27 21:59:06,987 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-27 21:59:06,993 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-27 21:59:06,994 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-27 21:59:06,995 INFO L275 PluginConnector]: CDTParser initialized [2020-08-27 21:59:06,996 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i [2020-08-27 21:59:07,066 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1ec896853/79739bbe17654585b282e19a9b3d9865/FLAGba0566878 [2020-08-27 21:59:07,638 INFO L306 CDTParser]: Found 1 translation units. [2020-08-27 21:59:07,639 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i [2020-08-27 21:59:07,649 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1ec896853/79739bbe17654585b282e19a9b3d9865/FLAGba0566878 [2020-08-27 21:59:07,932 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1ec896853/79739bbe17654585b282e19a9b3d9865 [2020-08-27 21:59:07,948 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-27 21:59:07,951 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-27 21:59:07,952 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-27 21:59:07,952 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-27 21:59:07,957 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-27 21:59:07,959 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:59:07" (1/1) ... [2020-08-27 21:59:07,964 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62502cb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:59:07, skipping insertion in model container [2020-08-27 21:59:07,965 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:59:07" (1/1) ... [2020-08-27 21:59:07,976 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-27 21:59:08,010 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-27 21:59:08,261 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-27 21:59:08,266 INFO L203 MainTranslator]: Completed pre-run [2020-08-27 21:59:08,305 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-27 21:59:08,324 INFO L208 MainTranslator]: Completed translation [2020-08-27 21:59:08,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:59:08 WrapperNode [2020-08-27 21:59:08,325 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-27 21:59:08,326 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-27 21:59:08,326 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-27 21:59:08,326 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-27 21:59:08,340 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:59:08" (1/1) ... [2020-08-27 21:59:08,340 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:59:08" (1/1) ... [2020-08-27 21:59:08,429 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:59:08" (1/1) ... [2020-08-27 21:59:08,429 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:59:08" (1/1) ... [2020-08-27 21:59:08,448 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:59:08" (1/1) ... [2020-08-27 21:59:08,461 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:59:08" (1/1) ... [2020-08-27 21:59:08,462 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:59:08" (1/1) ... [2020-08-27 21:59:08,465 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-27 21:59:08,466 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-27 21:59:08,466 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-27 21:59:08,466 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-27 21:59:08,467 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:59:08" (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 [2020-08-27 21:59:08,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-27 21:59:08,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-27 21:59:08,539 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-27 21:59:08,539 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-27 21:59:08,539 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-27 21:59:08,539 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-27 21:59:08,539 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-27 21:59:08,540 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-27 21:59:08,540 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-27 21:59:08,540 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-27 21:59:08,540 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-27 21:59:08,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-27 21:59:08,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-27 21:59:08,879 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-27 21:59:08,879 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-08-27 21:59:08,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:59:08 BoogieIcfgContainer [2020-08-27 21:59:08,885 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-27 21:59:08,886 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-27 21:59:08,887 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-27 21:59:08,891 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-27 21:59:08,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 09:59:07" (1/3) ... [2020-08-27 21:59:08,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7729c9cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:59:08, skipping insertion in model container [2020-08-27 21:59:08,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:59:08" (2/3) ... [2020-08-27 21:59:08,894 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7729c9cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:59:08, skipping insertion in model container [2020-08-27 21:59:08,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:59:08" (3/3) ... [2020-08-27 21:59:08,897 INFO L109 eAbstractionObserver]: Analyzing ICFG apache-escape-absolute.i [2020-08-27 21:59:08,915 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-27 21:59:08,926 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-27 21:59:08,965 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-27 21:59:09,003 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-27 21:59:09,003 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-27 21:59:09,003 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-27 21:59:09,004 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-27 21:59:09,004 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-27 21:59:09,004 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-27 21:59:09,004 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-27 21:59:09,004 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-27 21:59:09,034 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states. [2020-08-27 21:59:09,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-27 21:59:09,043 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:59:09,044 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:59:09,045 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:59:09,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:59:09,053 INFO L82 PathProgramCache]: Analyzing trace with hash 1626077920, now seen corresponding path program 1 times [2020-08-27 21:59:09,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:59:09,068 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1681463364] [2020-08-27 21:59:09,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:59:09,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:09,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:59:09,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:09,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:59:09,357 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1681463364] [2020-08-27 21:59:09,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:59:09,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-27 21:59:09,360 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957009953] [2020-08-27 21:59:09,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-27 21:59:09,366 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:59:09,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-27 21:59:09,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-27 21:59:09,383 INFO L87 Difference]: Start difference. First operand 53 states. Second operand 5 states. [2020-08-27 21:59:09,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:59:09,633 INFO L93 Difference]: Finished difference Result 111 states and 206 transitions. [2020-08-27 21:59:09,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-27 21:59:09,636 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-08-27 21:59:09,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:59:09,651 INFO L225 Difference]: With dead ends: 111 [2020-08-27 21:59:09,651 INFO L226 Difference]: Without dead ends: 63 [2020-08-27 21:59:09,658 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-27 21:59:09,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-08-27 21:59:09,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 56. [2020-08-27 21:59:09,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-08-27 21:59:09,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 79 transitions. [2020-08-27 21:59:09,734 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 79 transitions. Word has length 16 [2020-08-27 21:59:09,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:59:09,735 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 79 transitions. [2020-08-27 21:59:09,735 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-27 21:59:09,735 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 79 transitions. [2020-08-27 21:59:09,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-27 21:59:09,737 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:59:09,738 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:59:09,738 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-27 21:59:09,738 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:59:09,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:59:09,739 INFO L82 PathProgramCache]: Analyzing trace with hash -1393145919, now seen corresponding path program 1 times [2020-08-27 21:59:09,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:59:09,740 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [503768988] [2020-08-27 21:59:09,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:59:09,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:09,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:59:09,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:09,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:59:09,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:09,847 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:59:09,848 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [503768988] [2020-08-27 21:59:09,848 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:59:09,848 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-27 21:59:09,848 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445749278] [2020-08-27 21:59:09,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-27 21:59:09,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:59:09,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-27 21:59:09,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-27 21:59:09,855 INFO L87 Difference]: Start difference. First operand 56 states and 79 transitions. Second operand 6 states. [2020-08-27 21:59:10,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:59:10,103 INFO L93 Difference]: Finished difference Result 62 states and 84 transitions. [2020-08-27 21:59:10,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-27 21:59:10,104 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-08-27 21:59:10,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:59:10,109 INFO L225 Difference]: With dead ends: 62 [2020-08-27 21:59:10,109 INFO L226 Difference]: Without dead ends: 60 [2020-08-27 21:59:10,110 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-27 21:59:10,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-08-27 21:59:10,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-08-27 21:59:10,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-08-27 21:59:10,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 82 transitions. [2020-08-27 21:59:10,130 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 82 transitions. Word has length 21 [2020-08-27 21:59:10,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:59:10,131 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 82 transitions. [2020-08-27 21:59:10,131 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-27 21:59:10,132 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 82 transitions. [2020-08-27 21:59:10,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-08-27 21:59:10,134 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:59:10,134 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:59:10,134 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-27 21:59:10,135 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:59:10,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:59:10,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1101915893, now seen corresponding path program 1 times [2020-08-27 21:59:10,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:59:10,136 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1498157943] [2020-08-27 21:59:10,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:59:10,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:10,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:59:10,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:10,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:59:10,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:10,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-27 21:59:10,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:10,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-08-27 21:59:10,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:10,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-27 21:59:10,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:10,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-27 21:59:10,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:10,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-27 21:59:10,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:10,263 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-08-27 21:59:10,264 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1498157943] [2020-08-27 21:59:10,264 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:59:10,264 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-27 21:59:10,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147846356] [2020-08-27 21:59:10,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-27 21:59:10,266 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:59:10,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-27 21:59:10,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-27 21:59:10,266 INFO L87 Difference]: Start difference. First operand 60 states and 82 transitions. Second operand 3 states. [2020-08-27 21:59:10,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:59:10,299 INFO L93 Difference]: Finished difference Result 89 states and 122 transitions. [2020-08-27 21:59:10,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-27 21:59:10,300 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2020-08-27 21:59:10,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:59:10,302 INFO L225 Difference]: With dead ends: 89 [2020-08-27 21:59:10,302 INFO L226 Difference]: Without dead ends: 60 [2020-08-27 21:59:10,303 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-27 21:59:10,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-08-27 21:59:10,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-08-27 21:59:10,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-08-27 21:59:10,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 80 transitions. [2020-08-27 21:59:10,327 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 80 transitions. Word has length 50 [2020-08-27 21:59:10,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:59:10,330 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 80 transitions. [2020-08-27 21:59:10,330 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-27 21:59:10,331 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 80 transitions. [2020-08-27 21:59:10,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-27 21:59:10,333 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:59:10,333 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:59:10,333 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-27 21:59:10,333 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:59:10,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:59:10,335 INFO L82 PathProgramCache]: Analyzing trace with hash 668905142, now seen corresponding path program 1 times [2020-08-27 21:59:10,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:59:10,336 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1678262335] [2020-08-27 21:59:10,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:59:10,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:10,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:59:10,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:10,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:59:10,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:10,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-27 21:59:10,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:10,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-08-27 21:59:10,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:10,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-27 21:59:10,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:10,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-27 21:59:10,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:10,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-27 21:59:10,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:10,581 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-08-27 21:59:10,582 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1678262335] [2020-08-27 21:59:10,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:59:10,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-27 21:59:10,583 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694734929] [2020-08-27 21:59:10,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-27 21:59:10,584 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:59:10,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-27 21:59:10,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-27 21:59:10,584 INFO L87 Difference]: Start difference. First operand 60 states and 80 transitions. Second operand 6 states. [2020-08-27 21:59:10,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:59:10,740 INFO L93 Difference]: Finished difference Result 67 states and 86 transitions. [2020-08-27 21:59:10,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-27 21:59:10,741 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 51 [2020-08-27 21:59:10,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:59:10,742 INFO L225 Difference]: With dead ends: 67 [2020-08-27 21:59:10,743 INFO L226 Difference]: Without dead ends: 65 [2020-08-27 21:59:10,744 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-27 21:59:10,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-08-27 21:59:10,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 64. [2020-08-27 21:59:10,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-08-27 21:59:10,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 83 transitions. [2020-08-27 21:59:10,757 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 83 transitions. Word has length 51 [2020-08-27 21:59:10,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:59:10,758 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 83 transitions. [2020-08-27 21:59:10,758 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-27 21:59:10,758 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 83 transitions. [2020-08-27 21:59:10,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-08-27 21:59:10,762 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:59:10,762 INFO L422 BasicCegarLoop]: trace histogram [13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:59:10,762 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-27 21:59:10,762 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:59:10,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:59:10,763 INFO L82 PathProgramCache]: Analyzing trace with hash -702087769, now seen corresponding path program 1 times [2020-08-27 21:59:10,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:59:10,763 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [907885738] [2020-08-27 21:59:10,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:59:10,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:10,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:59:10,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:10,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:59:10,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:10,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-27 21:59:10,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:10,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-08-27 21:59:10,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:10,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-27 21:59:10,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:10,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-27 21:59:10,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:10,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-27 21:59:10,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:10,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-27 21:59:10,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:10,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-27 21:59:10,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:10,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-27 21:59:10,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:10,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-27 21:59:10,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:10,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-27 21:59:10,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:10,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-27 21:59:10,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:10,991 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2020-08-27 21:59:10,992 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [907885738] [2020-08-27 21:59:10,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:59:10,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-27 21:59:10,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992798807] [2020-08-27 21:59:10,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-27 21:59:10,993 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:59:10,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-27 21:59:10,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-27 21:59:10,994 INFO L87 Difference]: Start difference. First operand 64 states and 83 transitions. Second operand 7 states. [2020-08-27 21:59:11,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:59:11,115 INFO L93 Difference]: Finished difference Result 83 states and 108 transitions. [2020-08-27 21:59:11,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-27 21:59:11,116 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 86 [2020-08-27 21:59:11,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:59:11,118 INFO L225 Difference]: With dead ends: 83 [2020-08-27 21:59:11,118 INFO L226 Difference]: Without dead ends: 81 [2020-08-27 21:59:11,119 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-27 21:59:11,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-08-27 21:59:11,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 75. [2020-08-27 21:59:11,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-08-27 21:59:11,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 97 transitions. [2020-08-27 21:59:11,142 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 97 transitions. Word has length 86 [2020-08-27 21:59:11,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:59:11,145 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 97 transitions. [2020-08-27 21:59:11,146 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-27 21:59:11,146 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 97 transitions. [2020-08-27 21:59:11,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-08-27 21:59:11,151 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:59:11,152 INFO L422 BasicCegarLoop]: trace histogram [14, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:59:11,152 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-27 21:59:11,152 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:59:11,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:59:11,153 INFO L82 PathProgramCache]: Analyzing trace with hash 58209754, now seen corresponding path program 1 times [2020-08-27 21:59:11,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:59:11,155 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1756146221] [2020-08-27 21:59:11,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:59:11,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:11,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:59:11,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:11,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:59:11,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:11,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-27 21:59:11,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:11,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-08-27 21:59:11,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:11,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-27 21:59:11,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:11,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-27 21:59:11,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:11,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-27 21:59:11,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:11,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-27 21:59:11,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:11,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-27 21:59:11,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:11,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-27 21:59:11,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:11,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-27 21:59:11,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:11,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-27 21:59:11,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:11,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-27 21:59:11,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:11,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-27 21:59:11,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:11,323 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2020-08-27 21:59:11,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1756146221] [2020-08-27 21:59:11,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:59:11,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-27 21:59:11,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303490388] [2020-08-27 21:59:11,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-27 21:59:11,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:59:11,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-27 21:59:11,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-27 21:59:11,326 INFO L87 Difference]: Start difference. First operand 75 states and 97 transitions. Second operand 6 states. [2020-08-27 21:59:11,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:59:11,439 INFO L93 Difference]: Finished difference Result 81 states and 102 transitions. [2020-08-27 21:59:11,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-27 21:59:11,439 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 91 [2020-08-27 21:59:11,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:59:11,441 INFO L225 Difference]: With dead ends: 81 [2020-08-27 21:59:11,441 INFO L226 Difference]: Without dead ends: 79 [2020-08-27 21:59:11,442 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-27 21:59:11,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-08-27 21:59:11,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2020-08-27 21:59:11,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-08-27 21:59:11,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 100 transitions. [2020-08-27 21:59:11,455 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 100 transitions. Word has length 91 [2020-08-27 21:59:11,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:59:11,456 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 100 transitions. [2020-08-27 21:59:11,456 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-27 21:59:11,456 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 100 transitions. [2020-08-27 21:59:11,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-08-27 21:59:11,461 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:59:11,462 INFO L422 BasicCegarLoop]: trace histogram [19, 18, 18, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:59:11,462 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-27 21:59:11,462 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:59:11,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:59:11,463 INFO L82 PathProgramCache]: Analyzing trace with hash 299780712, now seen corresponding path program 1 times [2020-08-27 21:59:11,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:59:11,463 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1872556] [2020-08-27 21:59:11,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:59:11,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:11,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:59:11,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:11,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:59:11,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:11,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-27 21:59:11,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:11,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-08-27 21:59:11,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:11,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-27 21:59:11,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:11,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-27 21:59:11,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:11,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-27 21:59:11,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:11,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-27 21:59:11,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:11,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-27 21:59:11,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:11,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-27 21:59:11,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:11,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-27 21:59:11,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:11,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-27 21:59:11,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:11,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-27 21:59:11,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:11,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-27 21:59:11,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:11,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-27 21:59:11,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:11,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-27 21:59:11,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:11,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-27 21:59:11,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:11,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-27 21:59:11,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:11,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-27 21:59:11,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:11,652 INFO L134 CoverageAnalysis]: Checked inductivity of 654 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 613 trivial. 0 not checked. [2020-08-27 21:59:11,653 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1872556] [2020-08-27 21:59:11,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:59:11,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-27 21:59:11,654 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132665556] [2020-08-27 21:59:11,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-27 21:59:11,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:59:11,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-27 21:59:11,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-27 21:59:11,655 INFO L87 Difference]: Start difference. First operand 79 states and 100 transitions. Second operand 6 states. [2020-08-27 21:59:11,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:59:11,737 INFO L93 Difference]: Finished difference Result 82 states and 103 transitions. [2020-08-27 21:59:11,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-27 21:59:11,738 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 120 [2020-08-27 21:59:11,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:59:11,739 INFO L225 Difference]: With dead ends: 82 [2020-08-27 21:59:11,739 INFO L226 Difference]: Without dead ends: 0 [2020-08-27 21:59:11,740 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-27 21:59:11,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-27 21:59:11,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-27 21:59:11,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-27 21:59:11,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-27 21:59:11,741 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 120 [2020-08-27 21:59:11,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:59:11,742 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-27 21:59:11,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-27 21:59:11,742 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-27 21:59:11,742 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-27 21:59:11,742 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-27 21:59:11,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-27 21:59:12,346 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-27 21:59:12,347 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-27 21:59:12,347 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-27 21:59:12,347 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-27 21:59:12,347 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-27 21:59:12,347 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-27 21:59:12,348 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-08-27 21:59:12,348 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-08-27 21:59:12,348 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-08-27 21:59:12,348 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-08-27 21:59:12,349 INFO L264 CegarLoopResult]: At program point L60(line 60) the Hoare annotation is: (and (<= 1 main_~c~0) (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (<= (+ main_~c~0 1) main_~tokenlen~0) (not (= (+ main_~cp~0 1) main_~urilen~0)) (< main_~cp~0 main_~urilen~0)) [2020-08-27 21:59:12,349 INFO L264 CegarLoopResult]: At program point L60-1(line 60) the Hoare annotation is: (and (<= 1 main_~c~0) (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (<= (+ main_~c~0 1) main_~tokenlen~0) (not (= (+ main_~cp~0 1) main_~urilen~0)) (< main_~cp~0 main_~urilen~0)) [2020-08-27 21:59:12,350 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 72) no Hoare annotation was computed. [2020-08-27 21:59:12,350 INFO L264 CegarLoopResult]: At program point L52(line 52) the Hoare annotation is: (and (= main_~c~0 0) (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (not (= (+ main_~cp~0 1) main_~urilen~0)) (< main_~cp~0 main_~urilen~0)) [2020-08-27 21:59:12,350 INFO L264 CegarLoopResult]: At program point L52-1(line 52) the Hoare annotation is: (and (= main_~c~0 0) (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (not (= (+ main_~cp~0 1) main_~urilen~0)) (< main_~cp~0 main_~urilen~0)) [2020-08-27 21:59:12,350 INFO L264 CegarLoopResult]: At program point L36-1(lines 35 41) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (< main_~cp~0 main_~urilen~0)) [2020-08-27 21:59:12,350 INFO L264 CegarLoopResult]: At program point L36-2(lines 36 41) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (< main_~cp~0 main_~urilen~0)) [2020-08-27 21:59:12,351 INFO L264 CegarLoopResult]: At program point L61(line 61) the Hoare annotation is: (and (<= 1 main_~c~0) (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (<= (+ main_~c~0 1) main_~tokenlen~0) (not (= (+ main_~cp~0 1) main_~urilen~0)) (< main_~cp~0 main_~urilen~0)) [2020-08-27 21:59:12,351 INFO L264 CegarLoopResult]: At program point L45(line 45) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (not (= (+ main_~cp~0 1) main_~urilen~0)) (< main_~cp~0 main_~urilen~0)) [2020-08-27 21:59:12,351 INFO L264 CegarLoopResult]: At program point L45-1(line 45) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (not (= (+ main_~cp~0 1) main_~urilen~0)) (< main_~cp~0 main_~urilen~0)) [2020-08-27 21:59:12,351 INFO L271 CegarLoopResult]: At program point L70(lines 14 72) the Hoare annotation is: true [2020-08-27 21:59:12,351 INFO L268 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2020-08-27 21:59:12,354 INFO L264 CegarLoopResult]: At program point L62(line 62) the Hoare annotation is: (and (<= 1 main_~c~0) (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (<= (+ main_~c~0 1) main_~tokenlen~0) (not (= (+ main_~cp~0 1) main_~urilen~0)) (< main_~cp~0 main_~urilen~0)) [2020-08-27 21:59:12,354 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-08-27 21:59:12,355 INFO L264 CegarLoopResult]: At program point L54-1(lines 53 66) the Hoare annotation is: (let ((.cse0 (< 0 (+ main_~scheme~0 1))) (.cse1 (<= 1 main_~cp~0)) (.cse2 (< main_~cp~0 main_~urilen~0))) (or (and (<= 1 main_~c~0) .cse0 .cse1 (<= (+ main_~c~0 1) main_~tokenlen~0) .cse2) (and (= main_~c~0 0) .cse0 .cse1 .cse2))) [2020-08-27 21:59:12,355 INFO L268 CegarLoopResult]: For program point L46(lines 33 69) no Hoare annotation was computed. [2020-08-27 21:59:12,355 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 72) no Hoare annotation was computed. [2020-08-27 21:59:12,355 INFO L264 CegarLoopResult]: At program point L38(line 38) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (not (= (+ main_~cp~0 1) main_~urilen~0)) (< main_~cp~0 main_~urilen~0)) [2020-08-27 21:59:12,355 INFO L264 CegarLoopResult]: At program point L38-1(line 38) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (not (= (+ main_~cp~0 1) main_~urilen~0)) (< main_~cp~0 main_~urilen~0)) [2020-08-27 21:59:12,356 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 72) the Hoare annotation is: true [2020-08-27 21:59:12,356 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-08-27 21:59:12,356 INFO L268 CegarLoopResult]: For program point L39(line 39) no Hoare annotation was computed. [2020-08-27 21:59:12,356 INFO L264 CegarLoopResult]: At program point L31(line 31) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (< main_~cp~0 main_~urilen~0)) [2020-08-27 21:59:12,356 INFO L264 CegarLoopResult]: At program point L31-1(line 31) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (< main_~cp~0 main_~urilen~0)) [2020-08-27 21:59:12,356 INFO L264 CegarLoopResult]: At program point L56(line 56) the Hoare annotation is: (let ((.cse0 (< 0 (+ main_~scheme~0 1))) (.cse1 (<= 1 main_~cp~0)) (.cse2 (<= (+ main_~c~0 2) main_~tokenlen~0)) (.cse3 (not (= (+ main_~cp~0 1) main_~urilen~0))) (.cse4 (< main_~cp~0 main_~urilen~0))) (or (and (<= 1 main_~c~0) .cse0 .cse1 .cse2 .cse3 .cse4) (and (= main_~c~0 0) .cse0 .cse1 .cse2 .cse3 .cse4))) [2020-08-27 21:59:12,357 INFO L268 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-08-27 21:59:12,357 INFO L264 CegarLoopResult]: At program point L56-1(line 56) the Hoare annotation is: (let ((.cse0 (< 0 (+ main_~scheme~0 1))) (.cse1 (<= 1 main_~cp~0)) (.cse2 (<= (+ main_~c~0 2) main_~tokenlen~0)) (.cse3 (not (= (+ main_~cp~0 1) main_~urilen~0))) (.cse4 (< main_~cp~0 main_~urilen~0))) (or (and (<= 1 main_~c~0) .cse0 .cse1 .cse2 .cse3 .cse4) (and (= main_~c~0 0) .cse0 .cse1 .cse2 .cse3 .cse4))) [2020-08-27 21:59:12,357 INFO L268 CegarLoopResult]: For program point L32(line 32) no Hoare annotation was computed. [2020-08-27 21:59:12,357 INFO L268 CegarLoopResult]: For program point L57(line 57) no Hoare annotation was computed. [2020-08-27 21:59:12,358 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-08-27 21:59:12,358 INFO L268 CegarLoopResult]: For program point L24-1(lines 14 72) no Hoare annotation was computed. [2020-08-27 21:59:12,358 INFO L268 CegarLoopResult]: For program point L33(lines 33 69) no Hoare annotation was computed. [2020-08-27 21:59:12,358 INFO L268 CegarLoopResult]: For program point L58(lines 58 64) no Hoare annotation was computed. [2020-08-27 21:59:12,358 INFO L268 CegarLoopResult]: For program point L25(lines 14 72) no Hoare annotation was computed. [2020-08-27 21:59:12,358 INFO L268 CegarLoopResult]: For program point L58-1(lines 58 64) no Hoare annotation was computed. [2020-08-27 21:59:12,358 INFO L268 CegarLoopResult]: For program point L50(lines 50 68) no Hoare annotation was computed. [2020-08-27 21:59:12,359 INFO L264 CegarLoopResult]: At program point L42(line 42) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (< main_~cp~0 main_~urilen~0)) [2020-08-27 21:59:12,359 INFO L264 CegarLoopResult]: At program point L34(line 34) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (< main_~cp~0 main_~urilen~0)) [2020-08-27 21:59:12,359 INFO L264 CegarLoopResult]: At program point L34-1(line 34) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (< main_~cp~0 main_~urilen~0)) [2020-08-27 21:59:12,359 INFO L268 CegarLoopResult]: For program point L26(lines 14 72) no Hoare annotation was computed. [2020-08-27 21:59:12,359 INFO L268 CegarLoopResult]: For program point L43(lines 33 69) no Hoare annotation was computed. [2020-08-27 21:59:12,359 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-08-27 21:59:12,359 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-08-27 21:59:12,359 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-08-27 21:59:12,360 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-08-27 21:59:12,360 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-08-27 21:59:12,360 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-08-27 21:59:12,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 09:59:12 BoogieIcfgContainer [2020-08-27 21:59:12,397 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-27 21:59:12,403 INFO L168 Benchmark]: Toolchain (without parser) took 4449.61 ms. Allocated memory was 139.5 MB in the beginning and 248.0 MB in the end (delta: 108.5 MB). Free memory was 101.9 MB in the beginning and 209.8 MB in the end (delta: -107.9 MB). Peak memory consumption was 114.4 MB. Max. memory is 7.1 GB. [2020-08-27 21:59:12,410 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 139.5 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-27 21:59:12,412 INFO L168 Benchmark]: CACSL2BoogieTranslator took 373.55 ms. Allocated memory is still 139.5 MB. Free memory was 101.7 MB in the beginning and 90.8 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. [2020-08-27 21:59:12,413 INFO L168 Benchmark]: Boogie Preprocessor took 139.57 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 90.8 MB in the beginning and 181.0 MB in the end (delta: -90.2 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-08-27 21:59:12,413 INFO L168 Benchmark]: RCFGBuilder took 419.52 ms. Allocated memory is still 202.9 MB. Free memory was 181.0 MB in the beginning and 162.3 MB in the end (delta: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 7.1 GB. [2020-08-27 21:59:12,414 INFO L168 Benchmark]: TraceAbstraction took 3511.09 ms. Allocated memory was 202.9 MB in the beginning and 248.0 MB in the end (delta: 45.1 MB). Free memory was 161.7 MB in the beginning and 209.8 MB in the end (delta: -48.1 MB). Peak memory consumption was 110.8 MB. Max. memory is 7.1 GB. [2020-08-27 21:59:12,422 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 139.5 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 373.55 ms. Allocated memory is still 139.5 MB. Free memory was 101.7 MB in the beginning and 90.8 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 139.57 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 90.8 MB in the beginning and 181.0 MB in the end (delta: -90.2 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 419.52 ms. Allocated memory is still 202.9 MB. Free memory was 181.0 MB in the beginning and 162.3 MB in the end (delta: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3511.09 ms. Allocated memory was 202.9 MB in the beginning and 248.0 MB in the end (delta: 45.1 MB). Free memory was 161.7 MB in the beginning and 209.8 MB in the end (delta: -48.1 MB). Peak memory consumption was 110.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: 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: 1 - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: (0 < scheme + 1 && 1 <= cp) && cp < urilen - InvariantResult [Line: 53]: Loop Invariant Derived loop invariant: ((((1 <= c && 0 < scheme + 1) && 1 <= cp) && c + 1 <= tokenlen) && cp < urilen) || (((c == 0 && 0 < scheme + 1) && 1 <= cp) && cp < urilen) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 57 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.7s, OverallIterations: 7, TraceHistogramMax: 19, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 461 SDtfs, 100 SDslu, 1249 SDs, 0 SdLazy, 396 SolverSat, 96 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 173 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=79occurred 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: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 14 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 26 LocationsWithAnnotation, 77 PreInvPairs, 109 NumberOfFragments, 450 HoareAnnotationTreeSize, 77 FomulaSimplifications, 362 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 26 FomulaSimplificationsInter, 155 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 435 NumberOfCodeBlocks, 435 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 428 ConstructedInterpolants, 0 QuantifiedInterpolants, 48444 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 1426/1426 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...