/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=0.2 --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-invgen/apache-escape-absolute.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 23:06:56,904 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 23:06:56,908 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 23:06:56,950 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 23:06:56,951 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 23:06:56,959 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 23:06:56,961 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 23:06:56,964 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 23:06:56,967 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 23:06:56,970 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 23:06:56,974 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 23:06:56,975 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 23:06:56,976 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 23:06:56,976 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 23:06:56,977 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 23:06:56,978 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 23:06:56,979 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 23:06:56,980 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 23:06:56,981 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 23:06:56,983 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 23:06:56,985 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 23:06:56,986 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 23:06:56,987 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 23:06:56,987 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 23:06:56,990 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 23:06:56,990 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 23:06:56,990 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 23:06:56,991 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 23:06:56,991 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 23:06:56,992 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 23:06:56,993 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 23:06:56,993 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 23:06:56,994 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 23:06:56,995 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 23:06:56,996 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 23:06:56,996 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 23:06:56,997 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 23:06:56,997 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 23:06:56,997 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 23:06:56,998 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 23:06:56,998 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 23:06:56,999 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 [2020-08-21 23:06:57,021 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 23:06:57,022 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 23:06:57,023 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 23:06:57,023 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 23:06:57,023 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 23:06:57,024 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 23:06:57,024 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 23:06:57,024 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 23:06:57,024 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 23:06:57,024 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 23:06:57,025 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 23:06:57,025 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 23:06:57,025 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 23:06:57,025 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 23:06:57,026 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 23:06:57,026 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 23:06:57,026 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 23:06:57,026 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 23:06:57,026 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 23:06:57,027 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 23:06:57,027 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 23:06:57,027 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 23:06:57,027 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 23:06:57,028 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 23:06:57,028 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 23:06:57,028 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 23:06:57,028 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 23:06:57,028 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 23:06:57,028 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 23:06:57,029 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=0.2;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=0.2;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=0.2;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=0.2;log-additional-information=true; [2020-08-21 23:06:57,323 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 23:06:57,336 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 23:06:57,339 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 23:06:57,341 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 23:06:57,342 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 23:06:57,342 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i [2020-08-21 23:06:57,408 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5b2365246/e5397772d7934c2fbe8274c64c36c512/FLAGfbe4c650b [2020-08-21 23:06:57,850 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 23:06:57,851 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i [2020-08-21 23:06:57,858 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5b2365246/e5397772d7934c2fbe8274c64c36c512/FLAGfbe4c650b [2020-08-21 23:06:58,257 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5b2365246/e5397772d7934c2fbe8274c64c36c512 [2020-08-21 23:06:58,268 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 23:06:58,270 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 23:06:58,271 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 23:06:58,271 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 23:06:58,275 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 23:06:58,276 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 11:06:58" (1/1) ... [2020-08-21 23:06:58,279 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6267ef0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:06:58, skipping insertion in model container [2020-08-21 23:06:58,279 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 11:06:58" (1/1) ... [2020-08-21 23:06:58,287 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 23:06:58,308 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 23:06:58,482 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 23:06:58,486 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 23:06:58,508 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 23:06:58,523 INFO L208 MainTranslator]: Completed translation [2020-08-21 23:06:58,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:06:58 WrapperNode [2020-08-21 23:06:58,523 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 23:06:58,524 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 23:06:58,524 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 23:06:58,524 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 23:06:58,534 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:06:58" (1/1) ... [2020-08-21 23:06:58,535 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:06:58" (1/1) ... [2020-08-21 23:06:58,617 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:06:58" (1/1) ... [2020-08-21 23:06:58,618 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:06:58" (1/1) ... [2020-08-21 23:06:58,623 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:06:58" (1/1) ... [2020-08-21 23:06:58,630 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:06:58" (1/1) ... [2020-08-21 23:06:58,631 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:06:58" (1/1) ... [2020-08-21 23:06:58,633 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 23:06:58,634 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 23:06:58,634 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 23:06:58,634 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 23:06:58,635 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:06:58" (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 [2020-08-21 23:06:58,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 23:06:58,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 23:06:58,701 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-21 23:06:58,701 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-21 23:06:58,701 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 23:06:58,701 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 23:06:58,702 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 23:06:58,702 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-21 23:06:58,702 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-21 23:06:58,703 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 23:06:58,703 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 23:06:58,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 23:06:58,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 23:06:59,009 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 23:06:59,010 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-08-21 23:06:59,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 11:06:59 BoogieIcfgContainer [2020-08-21 23:06:59,015 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 23:06:59,016 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 23:06:59,016 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 23:06:59,019 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 23:06:59,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 11:06:58" (1/3) ... [2020-08-21 23:06:59,020 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74fd041f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 11:06:59, skipping insertion in model container [2020-08-21 23:06:59,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:06:58" (2/3) ... [2020-08-21 23:06:59,021 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74fd041f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 11:06:59, skipping insertion in model container [2020-08-21 23:06:59,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 11:06:59" (3/3) ... [2020-08-21 23:06:59,023 INFO L109 eAbstractionObserver]: Analyzing ICFG apache-escape-absolute.i [2020-08-21 23:06:59,033 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 23:06:59,040 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 23:06:59,055 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 23:06:59,081 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 23:06:59,082 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 23:06:59,082 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 23:06:59,082 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 23:06:59,082 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 23:06:59,082 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 23:06:59,082 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 23:06:59,083 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 23:06:59,105 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states. [2020-08-21 23:06:59,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-21 23:06:59,112 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:06:59,113 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:06:59,114 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:06:59,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:06:59,119 INFO L82 PathProgramCache]: Analyzing trace with hash 1626077920, now seen corresponding path program 1 times [2020-08-21 23:06:59,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:06:59,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1958382674] [2020-08-21 23:06:59,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:06:59,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:06:59,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:06:59,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:06:59,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:06:59,380 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1958382674] [2020-08-21 23:06:59,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:06:59,382 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 23:06:59,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976751015] [2020-08-21 23:06:59,388 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 23:06:59,388 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:06:59,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 23:06:59,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 23:06:59,405 INFO L87 Difference]: Start difference. First operand 53 states. Second operand 5 states. [2020-08-21 23:06:59,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:06:59,627 INFO L93 Difference]: Finished difference Result 111 states and 206 transitions. [2020-08-21 23:06:59,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 23:06:59,629 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-08-21 23:06:59,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:06:59,640 INFO L225 Difference]: With dead ends: 111 [2020-08-21 23:06:59,640 INFO L226 Difference]: Without dead ends: 63 [2020-08-21 23:06:59,646 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 [2020-08-21 23:06:59,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-08-21 23:06:59,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 56. [2020-08-21 23:06:59,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-08-21 23:06:59,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 79 transitions. [2020-08-21 23:06:59,706 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 79 transitions. Word has length 16 [2020-08-21 23:06:59,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:06:59,707 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 79 transitions. [2020-08-21 23:06:59,707 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 23:06:59,707 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 79 transitions. [2020-08-21 23:06:59,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-21 23:06:59,709 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:06:59,710 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] [2020-08-21 23:06:59,710 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 23:06:59,711 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:06:59,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:06:59,711 INFO L82 PathProgramCache]: Analyzing trace with hash -1393145919, now seen corresponding path program 1 times [2020-08-21 23:06:59,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:06:59,712 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [150124665] [2020-08-21 23:06:59,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:06:59,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:06:59,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:06:59,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:06:59,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:06:59,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:06:59,834 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:06:59,835 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [150124665] [2020-08-21 23:06:59,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:06:59,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 23:06:59,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91559719] [2020-08-21 23:06:59,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 23:06:59,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:06:59,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 23:06:59,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-21 23:06:59,839 INFO L87 Difference]: Start difference. First operand 56 states and 79 transitions. Second operand 6 states. [2020-08-21 23:07:00,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:07:00,050 INFO L93 Difference]: Finished difference Result 62 states and 84 transitions. [2020-08-21 23:07:00,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 23:07:00,051 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-08-21 23:07:00,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:07:00,054 INFO L225 Difference]: With dead ends: 62 [2020-08-21 23:07:00,055 INFO L226 Difference]: Without dead ends: 60 [2020-08-21 23:07:00,056 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 [2020-08-21 23:07:00,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-08-21 23:07:00,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-08-21 23:07:00,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-08-21 23:07:00,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 82 transitions. [2020-08-21 23:07:00,074 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 82 transitions. Word has length 21 [2020-08-21 23:07:00,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:07:00,075 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 82 transitions. [2020-08-21 23:07:00,075 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 23:07:00,075 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 82 transitions. [2020-08-21 23:07:00,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-08-21 23:07:00,077 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:07:00,077 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] [2020-08-21 23:07:00,078 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 23:07:00,078 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:07:00,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:07:00,078 INFO L82 PathProgramCache]: Analyzing trace with hash -1101915893, now seen corresponding path program 1 times [2020-08-21 23:07:00,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:07:00,079 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2045000917] [2020-08-21 23:07:00,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:07:00,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:07:00,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:07:00,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:07:00,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:07:00,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:07:00,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 23:07:00,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:07:00,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-08-21 23:07:00,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:07:00,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 23:07:00,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:07:00,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 23:07:00,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:07:00,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 23:07:00,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:07:00,233 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-08-21 23:07:00,233 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2045000917] [2020-08-21 23:07:00,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:07:00,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 23:07:00,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117184096] [2020-08-21 23:07:00,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 23:07:00,235 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:07:00,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 23:07:00,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 23:07:00,236 INFO L87 Difference]: Start difference. First operand 60 states and 82 transitions. Second operand 3 states. [2020-08-21 23:07:00,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:07:00,273 INFO L93 Difference]: Finished difference Result 89 states and 122 transitions. [2020-08-21 23:07:00,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 23:07:00,274 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2020-08-21 23:07:00,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:07:00,276 INFO L225 Difference]: With dead ends: 89 [2020-08-21 23:07:00,276 INFO L226 Difference]: Without dead ends: 60 [2020-08-21 23:07:00,277 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 [2020-08-21 23:07:00,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-08-21 23:07:00,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-08-21 23:07:00,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-08-21 23:07:00,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 80 transitions. [2020-08-21 23:07:00,291 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 80 transitions. Word has length 50 [2020-08-21 23:07:00,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:07:00,292 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 80 transitions. [2020-08-21 23:07:00,292 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 23:07:00,292 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 80 transitions. [2020-08-21 23:07:00,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-21 23:07:00,294 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:07:00,294 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] [2020-08-21 23:07:00,294 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 23:07:00,294 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:07:00,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:07:00,295 INFO L82 PathProgramCache]: Analyzing trace with hash 668905142, now seen corresponding path program 1 times [2020-08-21 23:07:00,295 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:07:00,295 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [862925006] [2020-08-21 23:07:00,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:07:00,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:07:00,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:07:00,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:07:00,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:07:00,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:07:00,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 23:07:00,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:07:00,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-08-21 23:07:00,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:07:00,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 23:07:00,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:07:00,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 23:07:00,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:07:00,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 23:07:00,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:07:00,456 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-08-21 23:07:00,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [862925006] [2020-08-21 23:07:00,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:07:00,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 23:07:00,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548321528] [2020-08-21 23:07:00,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 23:07:00,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:07:00,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 23:07:00,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 23:07:00,459 INFO L87 Difference]: Start difference. First operand 60 states and 80 transitions. Second operand 6 states. [2020-08-21 23:07:00,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:07:00,611 INFO L93 Difference]: Finished difference Result 67 states and 86 transitions. [2020-08-21 23:07:00,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 23:07:00,612 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 51 [2020-08-21 23:07:00,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:07:00,614 INFO L225 Difference]: With dead ends: 67 [2020-08-21 23:07:00,614 INFO L226 Difference]: Without dead ends: 65 [2020-08-21 23:07:00,615 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 [2020-08-21 23:07:00,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-08-21 23:07:00,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 64. [2020-08-21 23:07:00,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-08-21 23:07:00,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 83 transitions. [2020-08-21 23:07:00,631 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 83 transitions. Word has length 51 [2020-08-21 23:07:00,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:07:00,634 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 83 transitions. [2020-08-21 23:07:00,634 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 23:07:00,636 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 83 transitions. [2020-08-21 23:07:00,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-08-21 23:07:00,639 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:07:00,642 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] [2020-08-21 23:07:00,642 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 23:07:00,642 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:07:00,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:07:00,644 INFO L82 PathProgramCache]: Analyzing trace with hash -702087769, now seen corresponding path program 1 times [2020-08-21 23:07:00,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:07:00,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [283570541] [2020-08-21 23:07:00,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:07:00,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:07:00,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:07:00,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:07:00,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:07:00,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:07:00,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 23:07:00,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:07:00,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-08-21 23:07:00,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:07:00,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 23:07:00,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:07:00,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 23:07:00,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:07:00,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 23:07:00,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:07:00,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 23:07:00,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:07:00,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-21 23:07:00,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:07:00,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-21 23:07:00,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:07:00,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-21 23:07:00,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:07:00,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-21 23:07:00,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:07:00,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-21 23:07:00,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:07:00,897 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2020-08-21 23:07:00,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [283570541] [2020-08-21 23:07:00,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:07:00,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 23:07:00,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334003009] [2020-08-21 23:07:00,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 23:07:00,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:07:00,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 23:07:00,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 23:07:00,903 INFO L87 Difference]: Start difference. First operand 64 states and 83 transitions. Second operand 7 states. [2020-08-21 23:07:01,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:07:01,043 INFO L93 Difference]: Finished difference Result 83 states and 108 transitions. [2020-08-21 23:07:01,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 23:07:01,046 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 86 [2020-08-21 23:07:01,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:07:01,048 INFO L225 Difference]: With dead ends: 83 [2020-08-21 23:07:01,048 INFO L226 Difference]: Without dead ends: 81 [2020-08-21 23:07:01,049 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 [2020-08-21 23:07:01,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-08-21 23:07:01,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 75. [2020-08-21 23:07:01,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-08-21 23:07:01,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 97 transitions. [2020-08-21 23:07:01,074 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 97 transitions. Word has length 86 [2020-08-21 23:07:01,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:07:01,077 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 97 transitions. [2020-08-21 23:07:01,077 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 23:07:01,077 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 97 transitions. [2020-08-21 23:07:01,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-08-21 23:07:01,079 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:07:01,079 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] [2020-08-21 23:07:01,082 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 23:07:01,082 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:07:01,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:07:01,083 INFO L82 PathProgramCache]: Analyzing trace with hash 58209754, now seen corresponding path program 1 times [2020-08-21 23:07:01,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:07:01,083 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1338728449] [2020-08-21 23:07:01,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:07:01,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:07:01,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:07:01,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:07:01,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:07:01,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:07:01,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 23:07:01,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:07:01,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-08-21 23:07:01,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:07:01,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 23:07:01,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:07:01,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 23:07:01,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:07:01,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 23:07:01,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:07:01,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 23:07:01,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:07:01,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-21 23:07:01,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:07:01,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-21 23:07:01,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:07:01,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-21 23:07:01,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:07:01,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-21 23:07:01,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:07:01,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-21 23:07:01,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:07:01,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-21 23:07:01,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:07:01,214 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2020-08-21 23:07:01,214 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1338728449] [2020-08-21 23:07:01,215 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:07:01,215 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 23:07:01,215 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357334746] [2020-08-21 23:07:01,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 23:07:01,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:07:01,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 23:07:01,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-21 23:07:01,217 INFO L87 Difference]: Start difference. First operand 75 states and 97 transitions. Second operand 6 states. [2020-08-21 23:07:01,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:07:01,337 INFO L93 Difference]: Finished difference Result 81 states and 102 transitions. [2020-08-21 23:07:01,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 23:07:01,338 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 91 [2020-08-21 23:07:01,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:07:01,340 INFO L225 Difference]: With dead ends: 81 [2020-08-21 23:07:01,340 INFO L226 Difference]: Without dead ends: 79 [2020-08-21 23:07:01,340 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 [2020-08-21 23:07:01,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-08-21 23:07:01,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2020-08-21 23:07:01,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-08-21 23:07:01,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 100 transitions. [2020-08-21 23:07:01,353 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 100 transitions. Word has length 91 [2020-08-21 23:07:01,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:07:01,354 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 100 transitions. [2020-08-21 23:07:01,354 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 23:07:01,354 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 100 transitions. [2020-08-21 23:07:01,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-08-21 23:07:01,356 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:07:01,357 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] [2020-08-21 23:07:01,357 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 23:07:01,357 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:07:01,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:07:01,358 INFO L82 PathProgramCache]: Analyzing trace with hash 299780712, now seen corresponding path program 1 times [2020-08-21 23:07:01,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:07:01,358 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [196921088] [2020-08-21 23:07:01,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:07:01,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:07:01,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:07:01,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:07:01,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:07:01,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:07:01,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 23:07:01,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:07:01,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-08-21 23:07:01,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:07:01,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 23:07:01,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:07:01,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 23:07:01,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:07:01,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 23:07:01,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:07:01,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 23:07:01,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:07:01,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-21 23:07:01,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:07:01,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-21 23:07:01,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:07:01,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-21 23:07:01,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:07:01,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-21 23:07:01,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:07:01,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-21 23:07:01,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:07:01,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-21 23:07:01,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:07:01,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-21 23:07:01,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:07:01,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-21 23:07:01,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:07:01,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-21 23:07:01,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:07:01,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-21 23:07:01,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:07:01,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-21 23:07:01,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:07:01,481 INFO L134 CoverageAnalysis]: Checked inductivity of 654 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 613 trivial. 0 not checked. [2020-08-21 23:07:01,482 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [196921088] [2020-08-21 23:07:01,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:07:01,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 23:07:01,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21798823] [2020-08-21 23:07:01,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 23:07:01,483 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:07:01,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 23:07:01,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 23:07:01,485 INFO L87 Difference]: Start difference. First operand 79 states and 100 transitions. Second operand 6 states. [2020-08-21 23:07:01,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:07:01,580 INFO L93 Difference]: Finished difference Result 82 states and 103 transitions. [2020-08-21 23:07:01,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 23:07:01,581 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 120 [2020-08-21 23:07:01,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:07:01,582 INFO L225 Difference]: With dead ends: 82 [2020-08-21 23:07:01,582 INFO L226 Difference]: Without dead ends: 0 [2020-08-21 23:07:01,583 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 [2020-08-21 23:07:01,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-21 23:07:01,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-21 23:07:01,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-21 23:07:01,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-21 23:07:01,586 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 120 [2020-08-21 23:07:01,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:07:01,586 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-21 23:07:01,586 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 23:07:01,587 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-21 23:07:01,587 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-21 23:07:01,587 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 23:07:01,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-21 23:07:02,103 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-21 23:07:02,103 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-21 23:07:02,103 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-21 23:07:02,103 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-21 23:07:02,103 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-21 23:07:02,103 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-21 23:07:02,104 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-08-21 23:07:02,104 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-08-21 23:07:02,104 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-08-21 23:07:02,104 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-08-21 23:07:02,104 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)) [2020-08-21 23:07:02,105 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)) [2020-08-21 23:07:02,105 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 72) no Hoare annotation was computed. [2020-08-21 23:07:02,105 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)) [2020-08-21 23:07:02,105 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)) [2020-08-21 23:07:02,105 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)) [2020-08-21 23:07:02,106 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)) [2020-08-21 23:07:02,106 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)) [2020-08-21 23:07:02,106 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)) [2020-08-21 23:07:02,106 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)) [2020-08-21 23:07:02,106 INFO L271 CegarLoopResult]: At program point L70(lines 14 72) the Hoare annotation is: true [2020-08-21 23:07:02,107 INFO L268 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2020-08-21 23:07:02,107 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)) [2020-08-21 23:07:02,107 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-08-21 23:07:02,107 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))) [2020-08-21 23:07:02,107 INFO L268 CegarLoopResult]: For program point L46(lines 33 69) no Hoare annotation was computed. [2020-08-21 23:07:02,108 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 72) no Hoare annotation was computed. [2020-08-21 23:07:02,108 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)) [2020-08-21 23:07:02,108 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)) [2020-08-21 23:07:02,108 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 72) the Hoare annotation is: true [2020-08-21 23:07:02,108 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-08-21 23:07:02,108 INFO L268 CegarLoopResult]: For program point L39(line 39) no Hoare annotation was computed. [2020-08-21 23:07:02,109 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)) [2020-08-21 23:07:02,109 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)) [2020-08-21 23:07:02,109 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))) [2020-08-21 23:07:02,109 INFO L268 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-08-21 23:07:02,109 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))) [2020-08-21 23:07:02,110 INFO L268 CegarLoopResult]: For program point L32(line 32) no Hoare annotation was computed. [2020-08-21 23:07:02,110 INFO L268 CegarLoopResult]: For program point L57(line 57) no Hoare annotation was computed. [2020-08-21 23:07:02,110 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-08-21 23:07:02,121 INFO L268 CegarLoopResult]: For program point L24-1(lines 14 72) no Hoare annotation was computed. [2020-08-21 23:07:02,121 INFO L268 CegarLoopResult]: For program point L33(lines 33 69) no Hoare annotation was computed. [2020-08-21 23:07:02,122 INFO L268 CegarLoopResult]: For program point L58(lines 58 64) no Hoare annotation was computed. [2020-08-21 23:07:02,122 INFO L268 CegarLoopResult]: For program point L25(lines 14 72) no Hoare annotation was computed. [2020-08-21 23:07:02,122 INFO L268 CegarLoopResult]: For program point L58-1(lines 58 64) no Hoare annotation was computed. [2020-08-21 23:07:02,122 INFO L268 CegarLoopResult]: For program point L50(lines 50 68) no Hoare annotation was computed. [2020-08-21 23:07:02,122 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)) [2020-08-21 23:07:02,122 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)) [2020-08-21 23:07:02,123 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)) [2020-08-21 23:07:02,123 INFO L268 CegarLoopResult]: For program point L26(lines 14 72) no Hoare annotation was computed. [2020-08-21 23:07:02,123 INFO L268 CegarLoopResult]: For program point L43(lines 33 69) no Hoare annotation was computed. [2020-08-21 23:07:02,123 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-08-21 23:07:02,123 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-08-21 23:07:02,123 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-08-21 23:07:02,123 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-08-21 23:07:02,123 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-08-21 23:07:02,124 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-08-21 23:07:02,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 11:07:02 BoogieIcfgContainer [2020-08-21 23:07:02,144 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 23:07:02,147 INFO L168 Benchmark]: Toolchain (without parser) took 3876.43 ms. Allocated memory was 138.4 MB in the beginning and 251.1 MB in the end (delta: 112.7 MB). Free memory was 101.2 MB in the beginning and 223.0 MB in the end (delta: -121.8 MB). Peak memory consumption was 121.3 MB. Max. memory is 7.1 GB. [2020-08-21 23:07:02,148 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-08-21 23:07:02,148 INFO L168 Benchmark]: CACSL2BoogieTranslator took 252.62 ms. Allocated memory is still 138.4 MB. Free memory was 101.0 MB in the beginning and 90.4 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2020-08-21 23:07:02,149 INFO L168 Benchmark]: Boogie Preprocessor took 109.71 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 90.2 MB in the beginning and 179.7 MB in the end (delta: -89.5 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-08-21 23:07:02,150 INFO L168 Benchmark]: RCFGBuilder took 380.70 ms. Allocated memory is still 201.9 MB. Free memory was 179.7 MB in the beginning and 160.6 MB in the end (delta: 19.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 7.1 GB. [2020-08-21 23:07:02,151 INFO L168 Benchmark]: TraceAbstraction took 3128.33 ms. Allocated memory was 201.9 MB in the beginning and 251.1 MB in the end (delta: 49.3 MB). Free memory was 159.9 MB in the beginning and 223.0 MB in the end (delta: -63.1 MB). Peak memory consumption was 116.5 MB. Max. memory is 7.1 GB. [2020-08-21 23:07:02,155 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 252.62 ms. Allocated memory is still 138.4 MB. Free memory was 101.0 MB in the beginning and 90.4 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 109.71 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 90.2 MB in the beginning and 179.7 MB in the end (delta: -89.5 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 380.70 ms. Allocated memory is still 201.9 MB. Free memory was 179.7 MB in the beginning and 160.6 MB in the end (delta: 19.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3128.33 ms. Allocated memory was 201.9 MB in the beginning and 251.1 MB in the end (delta: 49.3 MB). Free memory was 159.9 MB in the beginning and 223.0 MB in the end (delta: -63.1 MB). Peak memory consumption was 116.5 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: 2.5s, OverallIterations: 7, TraceHistogramMax: 19, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, 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, 0.2s 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, 0.0s HoareSimplificationTime, 26 FomulaSimplificationsInter, 155 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s 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...