/usr/bin/java -ea -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.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loop-invgen/id_build.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-18 06:37:53,180 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-18 06:37:53,183 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-18 06:37:53,194 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-18 06:37:53,195 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-18 06:37:53,196 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-18 06:37:53,197 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-18 06:37:53,199 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-18 06:37:53,200 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-18 06:37:53,201 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-18 06:37:53,202 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-18 06:37:53,203 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-18 06:37:53,203 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-18 06:37:53,204 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-18 06:37:53,205 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-18 06:37:53,208 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-18 06:37:53,213 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-18 06:37:53,214 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-18 06:37:53,215 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-18 06:37:53,217 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-18 06:37:53,218 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-18 06:37:53,219 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-18 06:37:53,223 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-18 06:37:53,224 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-18 06:37:53,226 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-18 06:37:53,229 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-18 06:37:53,229 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-18 06:37:53,230 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-18 06:37:53,231 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-18 06:37:53,232 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-18 06:37:53,232 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-18 06:37:53,232 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-18 06:37:53,233 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-18 06:37:53,233 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-18 06:37:53,234 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-18 06:37:53,234 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-18 06:37:53,235 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-18 06:37:53,243 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-18 06:37:53,244 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-18 06:37:53,245 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-18 06:37:53,245 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-18 06:37:53,245 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-18 06:37:53,245 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-18 06:37:53,245 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-18 06:37:53,246 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-18 06:37:53,246 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-18 06:37:53,246 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-18 06:37:53,246 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-18 06:37:53,246 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-18 06:37:53,247 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-18 06:37:53,247 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-18 06:37:53,247 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-18 06:37:53,247 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-18 06:37:53,247 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-18 06:37:53,247 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-18 06:37:53,248 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-18 06:37:53,248 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-18 06:37:53,248 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-18 06:37:53,248 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-18 06:37:53,248 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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: Use separate solver for trace checks -> true [2020-07-18 06:37:53,526 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-18 06:37:53,546 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-18 06:37:53,549 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-18 06:37:53,551 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-18 06:37:53,551 INFO L275 PluginConnector]: CDTParser initialized [2020-07-18 06:37:53,552 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/id_build.i [2020-07-18 06:37:53,627 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d300a67d/517067505056482abecf8fc9b69182d7/FLAG5218c91f0 [2020-07-18 06:37:54,035 INFO L306 CDTParser]: Found 1 translation units. [2020-07-18 06:37:54,036 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/id_build.i [2020-07-18 06:37:54,040 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d300a67d/517067505056482abecf8fc9b69182d7/FLAG5218c91f0 [2020-07-18 06:37:54,420 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d300a67d/517067505056482abecf8fc9b69182d7 [2020-07-18 06:37:54,429 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-18 06:37:54,431 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-18 06:37:54,432 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-18 06:37:54,432 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-18 06:37:54,436 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-18 06:37:54,437 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 06:37:54" (1/1) ... [2020-07-18 06:37:54,440 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7227971a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:37:54, skipping insertion in model container [2020-07-18 06:37:54,440 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 06:37:54" (1/1) ... [2020-07-18 06:37:54,447 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-18 06:37:54,463 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-18 06:37:54,620 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-18 06:37:54,624 INFO L203 MainTranslator]: Completed pre-run [2020-07-18 06:37:54,641 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-18 06:37:54,655 INFO L208 MainTranslator]: Completed translation [2020-07-18 06:37:54,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:37:54 WrapperNode [2020-07-18 06:37:54,656 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-18 06:37:54,656 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-18 06:37:54,657 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-18 06:37:54,657 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-18 06:37:54,670 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:37:54" (1/1) ... [2020-07-18 06:37:54,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:37:54" (1/1) ... [2020-07-18 06:37:54,676 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:37:54" (1/1) ... [2020-07-18 06:37:54,676 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:37:54" (1/1) ... [2020-07-18 06:37:54,681 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:37:54" (1/1) ... [2020-07-18 06:37:54,687 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:37:54" (1/1) ... [2020-07-18 06:37:54,688 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:37:54" (1/1) ... [2020-07-18 06:37:54,690 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-18 06:37:54,690 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-18 06:37:54,690 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-18 06:37:54,691 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-18 06:37:54,692 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:37:54" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-07-18 06:37:54,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-18 06:37:54,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-18 06:37:54,852 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-18 06:37:54,852 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-18 06:37:54,852 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-18 06:37:54,853 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-18 06:37:54,853 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-18 06:37:54,853 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-18 06:37:54,853 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-18 06:37:54,853 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-18 06:37:54,854 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-18 06:37:54,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-18 06:37:54,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-18 06:37:55,155 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-18 06:37:55,155 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-07-18 06:37:55,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 06:37:55 BoogieIcfgContainer [2020-07-18 06:37:55,159 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-18 06:37:55,160 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-18 06:37:55,161 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-18 06:37:55,164 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-18 06:37:55,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.07 06:37:54" (1/3) ... [2020-07-18 06:37:55,165 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5772780f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.07 06:37:55, skipping insertion in model container [2020-07-18 06:37:55,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:37:54" (2/3) ... [2020-07-18 06:37:55,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5772780f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.07 06:37:55, skipping insertion in model container [2020-07-18 06:37:55,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 06:37:55" (3/3) ... [2020-07-18 06:37:55,168 INFO L109 eAbstractionObserver]: Analyzing ICFG id_build.i [2020-07-18 06:37:55,179 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-18 06:37:55,186 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-18 06:37:55,200 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-18 06:37:55,221 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-18 06:37:55,222 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-18 06:37:55,222 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-07-18 06:37:55,222 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-18 06:37:55,222 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-18 06:37:55,222 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-18 06:37:55,222 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-18 06:37:55,223 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-18 06:37:55,241 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-07-18 06:37:55,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-18 06:37:55,252 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 06:37:55,253 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-18 06:37:55,253 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 06:37:55,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 06:37:55,259 INFO L82 PathProgramCache]: Analyzing trace with hash 2141903635, now seen corresponding path program 1 times [2020-07-18 06:37:55,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 06:37:55,272 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1640454952] [2020-07-18 06:37:55,272 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 06:37:55,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:37:55,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:37:55,552 INFO L280 TraceCheckUtils]: 0: Hoare triple {37#true} assume true; {37#true} is VALID [2020-07-18 06:37:55,552 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {37#true} {37#true} #67#return; {37#true} is VALID [2020-07-18 06:37:55,555 INFO L263 TraceCheckUtils]: 0: Hoare triple {37#true} call ULTIMATE.init(); {37#true} is VALID [2020-07-18 06:37:55,555 INFO L280 TraceCheckUtils]: 1: Hoare triple {37#true} assume true; {37#true} is VALID [2020-07-18 06:37:55,556 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {37#true} {37#true} #67#return; {37#true} is VALID [2020-07-18 06:37:55,556 INFO L263 TraceCheckUtils]: 3: Hoare triple {37#true} call #t~ret3 := main(); {37#true} is VALID [2020-07-18 06:37:55,556 INFO L280 TraceCheckUtils]: 4: Hoare triple {37#true} havoc ~offset~0; {37#true} is VALID [2020-07-18 06:37:55,557 INFO L280 TraceCheckUtils]: 5: Hoare triple {37#true} havoc ~length~0; {37#true} is VALID [2020-07-18 06:37:55,557 INFO L280 TraceCheckUtils]: 6: Hoare triple {37#true} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; {37#true} is VALID [2020-07-18 06:37:55,558 INFO L280 TraceCheckUtils]: 7: Hoare triple {37#true} ~nlen~0 := #t~nondet0; {37#true} is VALID [2020-07-18 06:37:55,558 INFO L280 TraceCheckUtils]: 8: Hoare triple {37#true} havoc #t~nondet0; {37#true} is VALID [2020-07-18 06:37:55,559 INFO L280 TraceCheckUtils]: 9: Hoare triple {37#true} havoc ~i~0; {37#true} is VALID [2020-07-18 06:37:55,559 INFO L280 TraceCheckUtils]: 10: Hoare triple {37#true} havoc ~j~0; {37#true} is VALID [2020-07-18 06:37:55,559 INFO L280 TraceCheckUtils]: 11: Hoare triple {37#true} ~i~0 := 0; {37#true} is VALID [2020-07-18 06:37:55,561 INFO L280 TraceCheckUtils]: 12: Hoare triple {37#true} assume !!(~i~0 < ~nlen~0); {41#(< main_~i~0 main_~nlen~0)} is VALID [2020-07-18 06:37:55,562 INFO L280 TraceCheckUtils]: 13: Hoare triple {41#(< main_~i~0 main_~nlen~0)} ~j~0 := 0; {41#(< main_~i~0 main_~nlen~0)} is VALID [2020-07-18 06:37:55,563 INFO L280 TraceCheckUtils]: 14: Hoare triple {41#(< main_~i~0 main_~nlen~0)} assume !!(~j~0 < 8); {41#(< main_~i~0 main_~nlen~0)} is VALID [2020-07-18 06:37:55,565 INFO L263 TraceCheckUtils]: 15: Hoare triple {41#(< main_~i~0 main_~nlen~0)} call __VERIFIER_assert((if 0 <= ~nlen~0 - 1 - ~i~0 then 1 else 0)); {42#(not (= 0 |__VERIFIER_assert_#in~cond|))} is VALID [2020-07-18 06:37:55,567 INFO L280 TraceCheckUtils]: 16: Hoare triple {42#(not (= 0 |__VERIFIER_assert_#in~cond|))} ~cond := #in~cond; {43#(not (= 0 __VERIFIER_assert_~cond))} is VALID [2020-07-18 06:37:55,568 INFO L280 TraceCheckUtils]: 17: Hoare triple {43#(not (= 0 __VERIFIER_assert_~cond))} assume 0 == ~cond; {38#false} is VALID [2020-07-18 06:37:55,568 INFO L280 TraceCheckUtils]: 18: Hoare triple {38#false} assume !false; {38#false} is VALID [2020-07-18 06:37:55,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-18 06:37:55,572 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1640454952] [2020-07-18 06:37:55,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-18 06:37:55,574 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-18 06:37:55,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489259867] [2020-07-18 06:37:55,581 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-07-18 06:37:55,584 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-18 06:37:55,588 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states. [2020-07-18 06:37:55,629 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 19 edges. 19 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 06:37:55,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-18 06:37:55,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-18 06:37:55,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-18 06:37:55,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-18 06:37:55,642 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 5 states. [2020-07-18 06:37:55,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 06:37:55,921 INFO L93 Difference]: Finished difference Result 60 states and 72 transitions. [2020-07-18 06:37:55,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-18 06:37:55,921 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-07-18 06:37:55,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-18 06:37:55,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-18 06:37:55,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 72 transitions. [2020-07-18 06:37:55,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-18 06:37:55,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 72 transitions. [2020-07-18 06:37:55,942 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states and 72 transitions. [2020-07-18 06:37:56,056 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 72 edges. 72 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 06:37:56,070 INFO L225 Difference]: With dead ends: 60 [2020-07-18 06:37:56,070 INFO L226 Difference]: Without dead ends: 33 [2020-07-18 06:37:56,074 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 [2020-07-18 06:37:56,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-07-18 06:37:56,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-07-18 06:37:56,139 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-18 06:37:56,140 INFO L82 GeneralOperation]: Start isEquivalent. First operand 33 states. Second operand 33 states. [2020-07-18 06:37:56,140 INFO L74 IsIncluded]: Start isIncluded. First operand 33 states. Second operand 33 states. [2020-07-18 06:37:56,141 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 33 states. [2020-07-18 06:37:56,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 06:37:56,146 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2020-07-18 06:37:56,146 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2020-07-18 06:37:56,146 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 06:37:56,147 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 06:37:56,147 INFO L74 IsIncluded]: Start isIncluded. First operand 33 states. Second operand 33 states. [2020-07-18 06:37:56,147 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 33 states. [2020-07-18 06:37:56,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 06:37:56,152 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2020-07-18 06:37:56,152 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2020-07-18 06:37:56,152 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 06:37:56,153 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 06:37:56,153 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-18 06:37:56,153 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-18 06:37:56,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-07-18 06:37:56,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2020-07-18 06:37:56,158 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 19 [2020-07-18 06:37:56,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-18 06:37:56,158 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2020-07-18 06:37:56,158 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-18 06:37:56,159 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 33 states and 34 transitions. [2020-07-18 06:37:56,202 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 34 edges. 34 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 06:37:56,203 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2020-07-18 06:37:56,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-18 06:37:56,204 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 06:37:56,204 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, 1, 1, 1] [2020-07-18 06:37:56,205 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-18 06:37:56,205 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 06:37:56,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 06:37:56,206 INFO L82 PathProgramCache]: Analyzing trace with hash -1520201371, now seen corresponding path program 1 times [2020-07-18 06:37:56,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 06:37:56,206 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [614604327] [2020-07-18 06:37:56,206 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 06:37:56,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:37:56,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:37:56,314 INFO L280 TraceCheckUtils]: 0: Hoare triple {300#true} assume true; {300#true} is VALID [2020-07-18 06:37:56,315 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {300#true} {300#true} #67#return; {300#true} is VALID [2020-07-18 06:37:56,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:37:56,325 INFO L280 TraceCheckUtils]: 0: Hoare triple {300#true} ~cond := #in~cond; {300#true} is VALID [2020-07-18 06:37:56,326 INFO L280 TraceCheckUtils]: 1: Hoare triple {300#true} assume !(0 == ~cond); {300#true} is VALID [2020-07-18 06:37:56,326 INFO L280 TraceCheckUtils]: 2: Hoare triple {300#true} assume true; {300#true} is VALID [2020-07-18 06:37:56,327 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {300#true} {304#(< 0 (+ main_~i~0 1))} #71#return; {304#(< 0 (+ main_~i~0 1))} is VALID [2020-07-18 06:37:56,327 INFO L263 TraceCheckUtils]: 0: Hoare triple {300#true} call ULTIMATE.init(); {300#true} is VALID [2020-07-18 06:37:56,328 INFO L280 TraceCheckUtils]: 1: Hoare triple {300#true} assume true; {300#true} is VALID [2020-07-18 06:37:56,328 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {300#true} {300#true} #67#return; {300#true} is VALID [2020-07-18 06:37:56,328 INFO L263 TraceCheckUtils]: 3: Hoare triple {300#true} call #t~ret3 := main(); {300#true} is VALID [2020-07-18 06:37:56,329 INFO L280 TraceCheckUtils]: 4: Hoare triple {300#true} havoc ~offset~0; {300#true} is VALID [2020-07-18 06:37:56,329 INFO L280 TraceCheckUtils]: 5: Hoare triple {300#true} havoc ~length~0; {300#true} is VALID [2020-07-18 06:37:56,329 INFO L280 TraceCheckUtils]: 6: Hoare triple {300#true} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; {300#true} is VALID [2020-07-18 06:37:56,329 INFO L280 TraceCheckUtils]: 7: Hoare triple {300#true} ~nlen~0 := #t~nondet0; {300#true} is VALID [2020-07-18 06:37:56,330 INFO L280 TraceCheckUtils]: 8: Hoare triple {300#true} havoc #t~nondet0; {300#true} is VALID [2020-07-18 06:37:56,330 INFO L280 TraceCheckUtils]: 9: Hoare triple {300#true} havoc ~i~0; {300#true} is VALID [2020-07-18 06:37:56,330 INFO L280 TraceCheckUtils]: 10: Hoare triple {300#true} havoc ~j~0; {300#true} is VALID [2020-07-18 06:37:56,331 INFO L280 TraceCheckUtils]: 11: Hoare triple {300#true} ~i~0 := 0; {304#(< 0 (+ main_~i~0 1))} is VALID [2020-07-18 06:37:56,332 INFO L280 TraceCheckUtils]: 12: Hoare triple {304#(< 0 (+ main_~i~0 1))} assume !!(~i~0 < ~nlen~0); {304#(< 0 (+ main_~i~0 1))} is VALID [2020-07-18 06:37:56,333 INFO L280 TraceCheckUtils]: 13: Hoare triple {304#(< 0 (+ main_~i~0 1))} ~j~0 := 0; {304#(< 0 (+ main_~i~0 1))} is VALID [2020-07-18 06:37:56,333 INFO L280 TraceCheckUtils]: 14: Hoare triple {304#(< 0 (+ main_~i~0 1))} assume !!(~j~0 < 8); {304#(< 0 (+ main_~i~0 1))} is VALID [2020-07-18 06:37:56,334 INFO L263 TraceCheckUtils]: 15: Hoare triple {304#(< 0 (+ main_~i~0 1))} call __VERIFIER_assert((if 0 <= ~nlen~0 - 1 - ~i~0 then 1 else 0)); {300#true} is VALID [2020-07-18 06:37:56,334 INFO L280 TraceCheckUtils]: 16: Hoare triple {300#true} ~cond := #in~cond; {300#true} is VALID [2020-07-18 06:37:56,334 INFO L280 TraceCheckUtils]: 17: Hoare triple {300#true} assume !(0 == ~cond); {300#true} is VALID [2020-07-18 06:37:56,335 INFO L280 TraceCheckUtils]: 18: Hoare triple {300#true} assume true; {300#true} is VALID [2020-07-18 06:37:56,336 INFO L275 TraceCheckUtils]: 19: Hoare quadruple {300#true} {304#(< 0 (+ main_~i~0 1))} #71#return; {304#(< 0 (+ main_~i~0 1))} is VALID [2020-07-18 06:37:56,337 INFO L263 TraceCheckUtils]: 20: Hoare triple {304#(< 0 (+ main_~i~0 1))} call __VERIFIER_assert((if ~nlen~0 - 1 - ~i~0 < ~nlen~0 then 1 else 0)); {309#(not (= 0 |__VERIFIER_assert_#in~cond|))} is VALID [2020-07-18 06:37:56,338 INFO L280 TraceCheckUtils]: 21: Hoare triple {309#(not (= 0 |__VERIFIER_assert_#in~cond|))} ~cond := #in~cond; {310#(not (= 0 __VERIFIER_assert_~cond))} is VALID [2020-07-18 06:37:56,338 INFO L280 TraceCheckUtils]: 22: Hoare triple {310#(not (= 0 __VERIFIER_assert_~cond))} assume 0 == ~cond; {301#false} is VALID [2020-07-18 06:37:56,339 INFO L280 TraceCheckUtils]: 23: Hoare triple {301#false} assume !false; {301#false} is VALID [2020-07-18 06:37:56,341 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-18 06:37:56,341 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [614604327] [2020-07-18 06:37:56,341 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-18 06:37:56,341 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-18 06:37:56,342 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638285460] [2020-07-18 06:37:56,343 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-07-18 06:37:56,344 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-18 06:37:56,344 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states. [2020-07-18 06:37:56,371 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 24 edges. 24 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 06:37:56,371 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-18 06:37:56,371 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-18 06:37:56,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-18 06:37:56,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-18 06:37:56,372 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 5 states. [2020-07-18 06:37:56,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 06:37:56,565 INFO L93 Difference]: Finished difference Result 49 states and 52 transitions. [2020-07-18 06:37:56,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-18 06:37:56,566 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-07-18 06:37:56,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-18 06:37:56,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-18 06:37:56,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 49 transitions. [2020-07-18 06:37:56,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-18 06:37:56,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 49 transitions. [2020-07-18 06:37:56,573 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states and 49 transitions. [2020-07-18 06:37:56,629 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 49 edges. 49 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 06:37:56,632 INFO L225 Difference]: With dead ends: 49 [2020-07-18 06:37:56,633 INFO L226 Difference]: Without dead ends: 47 [2020-07-18 06:37:56,634 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-18 06:37:56,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-07-18 06:37:56,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2020-07-18 06:37:56,713 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-18 06:37:56,713 INFO L82 GeneralOperation]: Start isEquivalent. First operand 47 states. Second operand 45 states. [2020-07-18 06:37:56,714 INFO L74 IsIncluded]: Start isIncluded. First operand 47 states. Second operand 45 states. [2020-07-18 06:37:56,714 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 45 states. [2020-07-18 06:37:56,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 06:37:56,723 INFO L93 Difference]: Finished difference Result 47 states and 50 transitions. [2020-07-18 06:37:56,723 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 50 transitions. [2020-07-18 06:37:56,724 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 06:37:56,724 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 06:37:56,724 INFO L74 IsIncluded]: Start isIncluded. First operand 45 states. Second operand 47 states. [2020-07-18 06:37:56,726 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 47 states. [2020-07-18 06:37:56,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 06:37:56,734 INFO L93 Difference]: Finished difference Result 47 states and 50 transitions. [2020-07-18 06:37:56,735 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 50 transitions. [2020-07-18 06:37:56,737 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 06:37:56,737 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 06:37:56,737 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-18 06:37:56,739 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-18 06:37:56,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-07-18 06:37:56,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2020-07-18 06:37:56,747 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 24 [2020-07-18 06:37:56,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-18 06:37:56,748 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2020-07-18 06:37:56,748 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-18 06:37:56,748 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 45 states and 48 transitions. [2020-07-18 06:37:56,818 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 48 edges. 48 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 06:37:56,819 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2020-07-18 06:37:56,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-18 06:37:56,820 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 06:37:56,820 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-07-18 06:37:56,821 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-18 06:37:56,822 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 06:37:56,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 06:37:56,822 INFO L82 PathProgramCache]: Analyzing trace with hash -1589830701, now seen corresponding path program 1 times [2020-07-18 06:37:56,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 06:37:56,823 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2016128511] [2020-07-18 06:37:56,823 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 06:37:56,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:37:56,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:37:56,887 INFO L280 TraceCheckUtils]: 0: Hoare triple {597#true} assume true; {597#true} is VALID [2020-07-18 06:37:56,887 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {597#true} {597#true} #67#return; {597#true} is VALID [2020-07-18 06:37:56,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:37:56,894 INFO L280 TraceCheckUtils]: 0: Hoare triple {597#true} ~cond := #in~cond; {597#true} is VALID [2020-07-18 06:37:56,895 INFO L280 TraceCheckUtils]: 1: Hoare triple {597#true} assume !(0 == ~cond); {597#true} is VALID [2020-07-18 06:37:56,895 INFO L280 TraceCheckUtils]: 2: Hoare triple {597#true} assume true; {597#true} is VALID [2020-07-18 06:37:56,895 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {597#true} {598#false} #71#return; {598#false} is VALID [2020-07-18 06:37:56,896 INFO L263 TraceCheckUtils]: 0: Hoare triple {597#true} call ULTIMATE.init(); {597#true} is VALID [2020-07-18 06:37:56,896 INFO L280 TraceCheckUtils]: 1: Hoare triple {597#true} assume true; {597#true} is VALID [2020-07-18 06:37:56,897 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {597#true} {597#true} #67#return; {597#true} is VALID [2020-07-18 06:37:56,897 INFO L263 TraceCheckUtils]: 3: Hoare triple {597#true} call #t~ret3 := main(); {597#true} is VALID [2020-07-18 06:37:56,897 INFO L280 TraceCheckUtils]: 4: Hoare triple {597#true} havoc ~offset~0; {597#true} is VALID [2020-07-18 06:37:56,898 INFO L280 TraceCheckUtils]: 5: Hoare triple {597#true} havoc ~length~0; {597#true} is VALID [2020-07-18 06:37:56,898 INFO L280 TraceCheckUtils]: 6: Hoare triple {597#true} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; {597#true} is VALID [2020-07-18 06:37:56,898 INFO L280 TraceCheckUtils]: 7: Hoare triple {597#true} ~nlen~0 := #t~nondet0; {597#true} is VALID [2020-07-18 06:37:56,899 INFO L280 TraceCheckUtils]: 8: Hoare triple {597#true} havoc #t~nondet0; {597#true} is VALID [2020-07-18 06:37:56,899 INFO L280 TraceCheckUtils]: 9: Hoare triple {597#true} havoc ~i~0; {597#true} is VALID [2020-07-18 06:37:56,899 INFO L280 TraceCheckUtils]: 10: Hoare triple {597#true} havoc ~j~0; {597#true} is VALID [2020-07-18 06:37:56,900 INFO L280 TraceCheckUtils]: 11: Hoare triple {597#true} ~i~0 := 0; {597#true} is VALID [2020-07-18 06:37:56,900 INFO L280 TraceCheckUtils]: 12: Hoare triple {597#true} assume !!(~i~0 < ~nlen~0); {597#true} is VALID [2020-07-18 06:37:56,901 INFO L280 TraceCheckUtils]: 13: Hoare triple {597#true} ~j~0 := 0; {601#(<= main_~j~0 0)} is VALID [2020-07-18 06:37:56,902 INFO L280 TraceCheckUtils]: 14: Hoare triple {601#(<= main_~j~0 0)} assume !(~j~0 < 8); {598#false} is VALID [2020-07-18 06:37:56,903 INFO L280 TraceCheckUtils]: 15: Hoare triple {598#false} #t~post1 := ~i~0; {598#false} is VALID [2020-07-18 06:37:56,903 INFO L280 TraceCheckUtils]: 16: Hoare triple {598#false} ~i~0 := 1 + #t~post1; {598#false} is VALID [2020-07-18 06:37:56,903 INFO L280 TraceCheckUtils]: 17: Hoare triple {598#false} havoc #t~post1; {598#false} is VALID [2020-07-18 06:37:56,904 INFO L280 TraceCheckUtils]: 18: Hoare triple {598#false} assume !!(~i~0 < ~nlen~0); {598#false} is VALID [2020-07-18 06:37:56,904 INFO L280 TraceCheckUtils]: 19: Hoare triple {598#false} ~j~0 := 0; {598#false} is VALID [2020-07-18 06:37:56,904 INFO L280 TraceCheckUtils]: 20: Hoare triple {598#false} assume !!(~j~0 < 8); {598#false} is VALID [2020-07-18 06:37:56,905 INFO L263 TraceCheckUtils]: 21: Hoare triple {598#false} call __VERIFIER_assert((if 0 <= ~nlen~0 - 1 - ~i~0 then 1 else 0)); {597#true} is VALID [2020-07-18 06:37:56,905 INFO L280 TraceCheckUtils]: 22: Hoare triple {597#true} ~cond := #in~cond; {597#true} is VALID [2020-07-18 06:37:56,906 INFO L280 TraceCheckUtils]: 23: Hoare triple {597#true} assume !(0 == ~cond); {597#true} is VALID [2020-07-18 06:37:56,906 INFO L280 TraceCheckUtils]: 24: Hoare triple {597#true} assume true; {597#true} is VALID [2020-07-18 06:37:56,906 INFO L275 TraceCheckUtils]: 25: Hoare quadruple {597#true} {598#false} #71#return; {598#false} is VALID [2020-07-18 06:37:56,907 INFO L263 TraceCheckUtils]: 26: Hoare triple {598#false} call __VERIFIER_assert((if ~nlen~0 - 1 - ~i~0 < ~nlen~0 then 1 else 0)); {598#false} is VALID [2020-07-18 06:37:56,907 INFO L280 TraceCheckUtils]: 27: Hoare triple {598#false} ~cond := #in~cond; {598#false} is VALID [2020-07-18 06:37:56,907 INFO L280 TraceCheckUtils]: 28: Hoare triple {598#false} assume 0 == ~cond; {598#false} is VALID [2020-07-18 06:37:56,908 INFO L280 TraceCheckUtils]: 29: Hoare triple {598#false} assume !false; {598#false} is VALID [2020-07-18 06:37:56,910 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-18 06:37:56,910 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2016128511] [2020-07-18 06:37:56,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-18 06:37:56,911 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-18 06:37:56,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070418995] [2020-07-18 06:37:56,912 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-07-18 06:37:56,912 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-18 06:37:56,912 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states. [2020-07-18 06:37:56,951 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 30 edges. 30 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 06:37:56,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-18 06:37:56,952 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-18 06:37:56,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-18 06:37:56,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-18 06:37:56,953 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand 3 states. [2020-07-18 06:37:57,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 06:37:57,089 INFO L93 Difference]: Finished difference Result 76 states and 86 transitions. [2020-07-18 06:37:57,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-18 06:37:57,089 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-07-18 06:37:57,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-18 06:37:57,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-18 06:37:57,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 58 transitions. [2020-07-18 06:37:57,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-18 06:37:57,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 58 transitions. [2020-07-18 06:37:57,096 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states and 58 transitions. [2020-07-18 06:37:57,162 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 58 edges. 58 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 06:37:57,165 INFO L225 Difference]: With dead ends: 76 [2020-07-18 06:37:57,165 INFO L226 Difference]: Without dead ends: 55 [2020-07-18 06:37:57,166 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-18 06:37:57,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-07-18 06:37:57,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 47. [2020-07-18 06:37:57,218 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-18 06:37:57,218 INFO L82 GeneralOperation]: Start isEquivalent. First operand 55 states. Second operand 47 states. [2020-07-18 06:37:57,218 INFO L74 IsIncluded]: Start isIncluded. First operand 55 states. Second operand 47 states. [2020-07-18 06:37:57,218 INFO L87 Difference]: Start difference. First operand 55 states. Second operand 47 states. [2020-07-18 06:37:57,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 06:37:57,223 INFO L93 Difference]: Finished difference Result 55 states and 62 transitions. [2020-07-18 06:37:57,223 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 62 transitions. [2020-07-18 06:37:57,224 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 06:37:57,224 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 06:37:57,224 INFO L74 IsIncluded]: Start isIncluded. First operand 47 states. Second operand 55 states. [2020-07-18 06:37:57,225 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 55 states. [2020-07-18 06:37:57,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 06:37:57,229 INFO L93 Difference]: Finished difference Result 55 states and 62 transitions. [2020-07-18 06:37:57,229 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 62 transitions. [2020-07-18 06:37:57,230 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 06:37:57,230 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 06:37:57,230 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-18 06:37:57,231 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-18 06:37:57,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-07-18 06:37:57,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 50 transitions. [2020-07-18 06:37:57,233 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 50 transitions. Word has length 30 [2020-07-18 06:37:57,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-18 06:37:57,234 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 50 transitions. [2020-07-18 06:37:57,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-18 06:37:57,234 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 47 states and 50 transitions. [2020-07-18 06:37:57,293 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 50 edges. 50 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 06:37:57,293 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 50 transitions. [2020-07-18 06:37:57,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-07-18 06:37:57,295 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 06:37:57,295 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 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] [2020-07-18 06:37:57,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-18 06:37:57,295 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 06:37:57,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 06:37:57,296 INFO L82 PathProgramCache]: Analyzing trace with hash 156681780, now seen corresponding path program 1 times [2020-07-18 06:37:57,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 06:37:57,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1607296787] [2020-07-18 06:37:57,296 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 06:37:57,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:37:57,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:37:57,363 INFO L280 TraceCheckUtils]: 0: Hoare triple {964#true} assume true; {964#true} is VALID [2020-07-18 06:37:57,364 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {964#true} {964#true} #67#return; {964#true} is VALID [2020-07-18 06:37:57,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:37:57,373 INFO L280 TraceCheckUtils]: 0: Hoare triple {964#true} ~cond := #in~cond; {964#true} is VALID [2020-07-18 06:37:57,373 INFO L280 TraceCheckUtils]: 1: Hoare triple {964#true} assume !(0 == ~cond); {964#true} is VALID [2020-07-18 06:37:57,373 INFO L280 TraceCheckUtils]: 2: Hoare triple {964#true} assume true; {964#true} is VALID [2020-07-18 06:37:57,374 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {964#true} {968#(<= main_~j~0 0)} #71#return; {968#(<= main_~j~0 0)} is VALID [2020-07-18 06:37:57,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:37:57,381 INFO L280 TraceCheckUtils]: 0: Hoare triple {964#true} ~cond := #in~cond; {964#true} is VALID [2020-07-18 06:37:57,381 INFO L280 TraceCheckUtils]: 1: Hoare triple {964#true} assume !(0 == ~cond); {964#true} is VALID [2020-07-18 06:37:57,381 INFO L280 TraceCheckUtils]: 2: Hoare triple {964#true} assume true; {964#true} is VALID [2020-07-18 06:37:57,382 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {964#true} {968#(<= main_~j~0 0)} #73#return; {968#(<= main_~j~0 0)} is VALID [2020-07-18 06:37:57,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:37:57,387 INFO L280 TraceCheckUtils]: 0: Hoare triple {964#true} ~cond := #in~cond; {964#true} is VALID [2020-07-18 06:37:57,387 INFO L280 TraceCheckUtils]: 1: Hoare triple {964#true} assume !(0 == ~cond); {964#true} is VALID [2020-07-18 06:37:57,388 INFO L280 TraceCheckUtils]: 2: Hoare triple {964#true} assume true; {964#true} is VALID [2020-07-18 06:37:57,388 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {964#true} {965#false} #71#return; {965#false} is VALID [2020-07-18 06:37:57,388 INFO L263 TraceCheckUtils]: 0: Hoare triple {964#true} call ULTIMATE.init(); {964#true} is VALID [2020-07-18 06:37:57,388 INFO L280 TraceCheckUtils]: 1: Hoare triple {964#true} assume true; {964#true} is VALID [2020-07-18 06:37:57,389 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {964#true} {964#true} #67#return; {964#true} is VALID [2020-07-18 06:37:57,389 INFO L263 TraceCheckUtils]: 3: Hoare triple {964#true} call #t~ret3 := main(); {964#true} is VALID [2020-07-18 06:37:57,389 INFO L280 TraceCheckUtils]: 4: Hoare triple {964#true} havoc ~offset~0; {964#true} is VALID [2020-07-18 06:37:57,390 INFO L280 TraceCheckUtils]: 5: Hoare triple {964#true} havoc ~length~0; {964#true} is VALID [2020-07-18 06:37:57,390 INFO L280 TraceCheckUtils]: 6: Hoare triple {964#true} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; {964#true} is VALID [2020-07-18 06:37:57,390 INFO L280 TraceCheckUtils]: 7: Hoare triple {964#true} ~nlen~0 := #t~nondet0; {964#true} is VALID [2020-07-18 06:37:57,390 INFO L280 TraceCheckUtils]: 8: Hoare triple {964#true} havoc #t~nondet0; {964#true} is VALID [2020-07-18 06:37:57,391 INFO L280 TraceCheckUtils]: 9: Hoare triple {964#true} havoc ~i~0; {964#true} is VALID [2020-07-18 06:37:57,391 INFO L280 TraceCheckUtils]: 10: Hoare triple {964#true} havoc ~j~0; {964#true} is VALID [2020-07-18 06:37:57,391 INFO L280 TraceCheckUtils]: 11: Hoare triple {964#true} ~i~0 := 0; {964#true} is VALID [2020-07-18 06:37:57,391 INFO L280 TraceCheckUtils]: 12: Hoare triple {964#true} assume !!(~i~0 < ~nlen~0); {964#true} is VALID [2020-07-18 06:37:57,392 INFO L280 TraceCheckUtils]: 13: Hoare triple {964#true} ~j~0 := 0; {968#(<= main_~j~0 0)} is VALID [2020-07-18 06:37:57,393 INFO L280 TraceCheckUtils]: 14: Hoare triple {968#(<= main_~j~0 0)} assume !!(~j~0 < 8); {968#(<= main_~j~0 0)} is VALID [2020-07-18 06:37:57,393 INFO L263 TraceCheckUtils]: 15: Hoare triple {968#(<= main_~j~0 0)} call __VERIFIER_assert((if 0 <= ~nlen~0 - 1 - ~i~0 then 1 else 0)); {964#true} is VALID [2020-07-18 06:37:57,394 INFO L280 TraceCheckUtils]: 16: Hoare triple {964#true} ~cond := #in~cond; {964#true} is VALID [2020-07-18 06:37:57,394 INFO L280 TraceCheckUtils]: 17: Hoare triple {964#true} assume !(0 == ~cond); {964#true} is VALID [2020-07-18 06:37:57,394 INFO L280 TraceCheckUtils]: 18: Hoare triple {964#true} assume true; {964#true} is VALID [2020-07-18 06:37:57,395 INFO L275 TraceCheckUtils]: 19: Hoare quadruple {964#true} {968#(<= main_~j~0 0)} #71#return; {968#(<= main_~j~0 0)} is VALID [2020-07-18 06:37:57,395 INFO L263 TraceCheckUtils]: 20: Hoare triple {968#(<= main_~j~0 0)} call __VERIFIER_assert((if ~nlen~0 - 1 - ~i~0 < ~nlen~0 then 1 else 0)); {964#true} is VALID [2020-07-18 06:37:57,396 INFO L280 TraceCheckUtils]: 21: Hoare triple {964#true} ~cond := #in~cond; {964#true} is VALID [2020-07-18 06:37:57,396 INFO L280 TraceCheckUtils]: 22: Hoare triple {964#true} assume !(0 == ~cond); {964#true} is VALID [2020-07-18 06:37:57,396 INFO L280 TraceCheckUtils]: 23: Hoare triple {964#true} assume true; {964#true} is VALID [2020-07-18 06:37:57,397 INFO L275 TraceCheckUtils]: 24: Hoare quadruple {964#true} {968#(<= main_~j~0 0)} #73#return; {968#(<= main_~j~0 0)} is VALID [2020-07-18 06:37:57,398 INFO L280 TraceCheckUtils]: 25: Hoare triple {968#(<= main_~j~0 0)} #t~post2 := ~j~0; {977#(<= |main_#t~post2| 0)} is VALID [2020-07-18 06:37:57,399 INFO L280 TraceCheckUtils]: 26: Hoare triple {977#(<= |main_#t~post2| 0)} ~j~0 := 1 + #t~post2; {978#(<= main_~j~0 1)} is VALID [2020-07-18 06:37:57,400 INFO L280 TraceCheckUtils]: 27: Hoare triple {978#(<= main_~j~0 1)} havoc #t~post2; {978#(<= main_~j~0 1)} is VALID [2020-07-18 06:37:57,400 INFO L280 TraceCheckUtils]: 28: Hoare triple {978#(<= main_~j~0 1)} assume !(~j~0 < 8); {965#false} is VALID [2020-07-18 06:37:57,401 INFO L280 TraceCheckUtils]: 29: Hoare triple {965#false} #t~post1 := ~i~0; {965#false} is VALID [2020-07-18 06:37:57,401 INFO L280 TraceCheckUtils]: 30: Hoare triple {965#false} ~i~0 := 1 + #t~post1; {965#false} is VALID [2020-07-18 06:37:57,401 INFO L280 TraceCheckUtils]: 31: Hoare triple {965#false} havoc #t~post1; {965#false} is VALID [2020-07-18 06:37:57,401 INFO L280 TraceCheckUtils]: 32: Hoare triple {965#false} assume !!(~i~0 < ~nlen~0); {965#false} is VALID [2020-07-18 06:37:57,402 INFO L280 TraceCheckUtils]: 33: Hoare triple {965#false} ~j~0 := 0; {965#false} is VALID [2020-07-18 06:37:57,402 INFO L280 TraceCheckUtils]: 34: Hoare triple {965#false} assume !!(~j~0 < 8); {965#false} is VALID [2020-07-18 06:37:57,402 INFO L263 TraceCheckUtils]: 35: Hoare triple {965#false} call __VERIFIER_assert((if 0 <= ~nlen~0 - 1 - ~i~0 then 1 else 0)); {964#true} is VALID [2020-07-18 06:37:57,402 INFO L280 TraceCheckUtils]: 36: Hoare triple {964#true} ~cond := #in~cond; {964#true} is VALID [2020-07-18 06:37:57,403 INFO L280 TraceCheckUtils]: 37: Hoare triple {964#true} assume !(0 == ~cond); {964#true} is VALID [2020-07-18 06:37:57,403 INFO L280 TraceCheckUtils]: 38: Hoare triple {964#true} assume true; {964#true} is VALID [2020-07-18 06:37:57,403 INFO L275 TraceCheckUtils]: 39: Hoare quadruple {964#true} {965#false} #71#return; {965#false} is VALID [2020-07-18 06:37:57,404 INFO L263 TraceCheckUtils]: 40: Hoare triple {965#false} call __VERIFIER_assert((if ~nlen~0 - 1 - ~i~0 < ~nlen~0 then 1 else 0)); {965#false} is VALID [2020-07-18 06:37:57,404 INFO L280 TraceCheckUtils]: 41: Hoare triple {965#false} ~cond := #in~cond; {965#false} is VALID [2020-07-18 06:37:57,404 INFO L280 TraceCheckUtils]: 42: Hoare triple {965#false} assume 0 == ~cond; {965#false} is VALID [2020-07-18 06:37:57,404 INFO L280 TraceCheckUtils]: 43: Hoare triple {965#false} assume !false; {965#false} is VALID [2020-07-18 06:37:57,407 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-07-18 06:37:57,407 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1607296787] [2020-07-18 06:37:57,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-18 06:37:57,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-07-18 06:37:57,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554971641] [2020-07-18 06:37:57,408 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 44 [2020-07-18 06:37:57,409 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-18 06:37:57,409 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states. [2020-07-18 06:37:57,446 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 38 edges. 38 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 06:37:57,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-18 06:37:57,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-18 06:37:57,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-18 06:37:57,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-18 06:37:57,447 INFO L87 Difference]: Start difference. First operand 47 states and 50 transitions. Second operand 5 states. [2020-07-18 06:37:57,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 06:37:57,724 INFO L93 Difference]: Finished difference Result 89 states and 103 transitions. [2020-07-18 06:37:57,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-18 06:37:57,724 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 44 [2020-07-18 06:37:57,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-18 06:37:57,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-18 06:37:57,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 66 transitions. [2020-07-18 06:37:57,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-18 06:37:57,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 66 transitions. [2020-07-18 06:37:57,735 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states and 66 transitions. [2020-07-18 06:37:57,808 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 66 edges. 66 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 06:37:57,812 INFO L225 Difference]: With dead ends: 89 [2020-07-18 06:37:57,812 INFO L226 Difference]: Without dead ends: 67 [2020-07-18 06:37:57,813 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-07-18 06:37:57,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-07-18 06:37:57,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 59. [2020-07-18 06:37:57,903 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-18 06:37:57,904 INFO L82 GeneralOperation]: Start isEquivalent. First operand 67 states. Second operand 59 states. [2020-07-18 06:37:57,904 INFO L74 IsIncluded]: Start isIncluded. First operand 67 states. Second operand 59 states. [2020-07-18 06:37:57,904 INFO L87 Difference]: Start difference. First operand 67 states. Second operand 59 states. [2020-07-18 06:37:57,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 06:37:57,909 INFO L93 Difference]: Finished difference Result 67 states and 78 transitions. [2020-07-18 06:37:57,910 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 78 transitions. [2020-07-18 06:37:57,911 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 06:37:57,911 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 06:37:57,911 INFO L74 IsIncluded]: Start isIncluded. First operand 59 states. Second operand 67 states. [2020-07-18 06:37:57,911 INFO L87 Difference]: Start difference. First operand 59 states. Second operand 67 states. [2020-07-18 06:37:57,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 06:37:57,920 INFO L93 Difference]: Finished difference Result 67 states and 78 transitions. [2020-07-18 06:37:57,920 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 78 transitions. [2020-07-18 06:37:57,921 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 06:37:57,921 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 06:37:57,921 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-18 06:37:57,922 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-18 06:37:57,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-07-18 06:37:57,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2020-07-18 06:37:57,928 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 44 [2020-07-18 06:37:57,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-18 06:37:57,931 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2020-07-18 06:37:57,931 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-18 06:37:57,931 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 59 states and 66 transitions. [2020-07-18 06:37:58,012 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 66 edges. 66 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 06:37:58,012 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2020-07-18 06:37:58,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-07-18 06:37:58,014 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 06:37:58,015 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-18 06:37:58,015 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-18 06:37:58,015 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 06:37:58,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 06:37:58,017 INFO L82 PathProgramCache]: Analyzing trace with hash -1839058219, now seen corresponding path program 2 times [2020-07-18 06:37:58,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 06:37:58,018 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2003958286] [2020-07-18 06:37:58,018 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 06:37:58,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:37:58,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:37:58,127 INFO L280 TraceCheckUtils]: 0: Hoare triple {1419#true} assume true; {1419#true} is VALID [2020-07-18 06:37:58,127 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {1419#true} {1419#true} #67#return; {1419#true} is VALID [2020-07-18 06:37:58,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:37:58,133 INFO L280 TraceCheckUtils]: 0: Hoare triple {1419#true} ~cond := #in~cond; {1419#true} is VALID [2020-07-18 06:37:58,133 INFO L280 TraceCheckUtils]: 1: Hoare triple {1419#true} assume !(0 == ~cond); {1419#true} is VALID [2020-07-18 06:37:58,134 INFO L280 TraceCheckUtils]: 2: Hoare triple {1419#true} assume true; {1419#true} is VALID [2020-07-18 06:37:58,134 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {1419#true} {1423#(<= main_~j~0 0)} #71#return; {1423#(<= main_~j~0 0)} is VALID [2020-07-18 06:37:58,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:37:58,140 INFO L280 TraceCheckUtils]: 0: Hoare triple {1419#true} ~cond := #in~cond; {1419#true} is VALID [2020-07-18 06:37:58,140 INFO L280 TraceCheckUtils]: 1: Hoare triple {1419#true} assume !(0 == ~cond); {1419#true} is VALID [2020-07-18 06:37:58,141 INFO L280 TraceCheckUtils]: 2: Hoare triple {1419#true} assume true; {1419#true} is VALID [2020-07-18 06:37:58,141 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {1419#true} {1423#(<= main_~j~0 0)} #73#return; {1423#(<= main_~j~0 0)} is VALID [2020-07-18 06:37:58,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:37:58,147 INFO L280 TraceCheckUtils]: 0: Hoare triple {1419#true} ~cond := #in~cond; {1419#true} is VALID [2020-07-18 06:37:58,148 INFO L280 TraceCheckUtils]: 1: Hoare triple {1419#true} assume !(0 == ~cond); {1419#true} is VALID [2020-07-18 06:37:58,148 INFO L280 TraceCheckUtils]: 2: Hoare triple {1419#true} assume true; {1419#true} is VALID [2020-07-18 06:37:58,149 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {1419#true} {1433#(<= main_~j~0 1)} #71#return; {1433#(<= main_~j~0 1)} is VALID [2020-07-18 06:37:58,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:37:58,154 INFO L280 TraceCheckUtils]: 0: Hoare triple {1419#true} ~cond := #in~cond; {1419#true} is VALID [2020-07-18 06:37:58,154 INFO L280 TraceCheckUtils]: 1: Hoare triple {1419#true} assume !(0 == ~cond); {1419#true} is VALID [2020-07-18 06:37:58,155 INFO L280 TraceCheckUtils]: 2: Hoare triple {1419#true} assume true; {1419#true} is VALID [2020-07-18 06:37:58,156 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {1419#true} {1433#(<= main_~j~0 1)} #73#return; {1433#(<= main_~j~0 1)} is VALID [2020-07-18 06:37:58,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:37:58,160 INFO L280 TraceCheckUtils]: 0: Hoare triple {1419#true} ~cond := #in~cond; {1419#true} is VALID [2020-07-18 06:37:58,160 INFO L280 TraceCheckUtils]: 1: Hoare triple {1419#true} assume !(0 == ~cond); {1419#true} is VALID [2020-07-18 06:37:58,161 INFO L280 TraceCheckUtils]: 2: Hoare triple {1419#true} assume true; {1419#true} is VALID [2020-07-18 06:37:58,161 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {1419#true} {1420#false} #71#return; {1420#false} is VALID [2020-07-18 06:37:58,161 INFO L263 TraceCheckUtils]: 0: Hoare triple {1419#true} call ULTIMATE.init(); {1419#true} is VALID [2020-07-18 06:37:58,161 INFO L280 TraceCheckUtils]: 1: Hoare triple {1419#true} assume true; {1419#true} is VALID [2020-07-18 06:37:58,162 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {1419#true} {1419#true} #67#return; {1419#true} is VALID [2020-07-18 06:37:58,162 INFO L263 TraceCheckUtils]: 3: Hoare triple {1419#true} call #t~ret3 := main(); {1419#true} is VALID [2020-07-18 06:37:58,162 INFO L280 TraceCheckUtils]: 4: Hoare triple {1419#true} havoc ~offset~0; {1419#true} is VALID [2020-07-18 06:37:58,162 INFO L280 TraceCheckUtils]: 5: Hoare triple {1419#true} havoc ~length~0; {1419#true} is VALID [2020-07-18 06:37:58,163 INFO L280 TraceCheckUtils]: 6: Hoare triple {1419#true} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; {1419#true} is VALID [2020-07-18 06:37:58,163 INFO L280 TraceCheckUtils]: 7: Hoare triple {1419#true} ~nlen~0 := #t~nondet0; {1419#true} is VALID [2020-07-18 06:37:58,163 INFO L280 TraceCheckUtils]: 8: Hoare triple {1419#true} havoc #t~nondet0; {1419#true} is VALID [2020-07-18 06:37:58,163 INFO L280 TraceCheckUtils]: 9: Hoare triple {1419#true} havoc ~i~0; {1419#true} is VALID [2020-07-18 06:37:58,164 INFO L280 TraceCheckUtils]: 10: Hoare triple {1419#true} havoc ~j~0; {1419#true} is VALID [2020-07-18 06:37:58,164 INFO L280 TraceCheckUtils]: 11: Hoare triple {1419#true} ~i~0 := 0; {1419#true} is VALID [2020-07-18 06:37:58,164 INFO L280 TraceCheckUtils]: 12: Hoare triple {1419#true} assume !!(~i~0 < ~nlen~0); {1419#true} is VALID [2020-07-18 06:37:58,165 INFO L280 TraceCheckUtils]: 13: Hoare triple {1419#true} ~j~0 := 0; {1423#(<= main_~j~0 0)} is VALID [2020-07-18 06:37:58,165 INFO L280 TraceCheckUtils]: 14: Hoare triple {1423#(<= main_~j~0 0)} assume !!(~j~0 < 8); {1423#(<= main_~j~0 0)} is VALID [2020-07-18 06:37:58,166 INFO L263 TraceCheckUtils]: 15: Hoare triple {1423#(<= main_~j~0 0)} call __VERIFIER_assert((if 0 <= ~nlen~0 - 1 - ~i~0 then 1 else 0)); {1419#true} is VALID [2020-07-18 06:37:58,166 INFO L280 TraceCheckUtils]: 16: Hoare triple {1419#true} ~cond := #in~cond; {1419#true} is VALID [2020-07-18 06:37:58,166 INFO L280 TraceCheckUtils]: 17: Hoare triple {1419#true} assume !(0 == ~cond); {1419#true} is VALID [2020-07-18 06:37:58,166 INFO L280 TraceCheckUtils]: 18: Hoare triple {1419#true} assume true; {1419#true} is VALID [2020-07-18 06:37:58,167 INFO L275 TraceCheckUtils]: 19: Hoare quadruple {1419#true} {1423#(<= main_~j~0 0)} #71#return; {1423#(<= main_~j~0 0)} is VALID [2020-07-18 06:37:58,168 INFO L263 TraceCheckUtils]: 20: Hoare triple {1423#(<= main_~j~0 0)} call __VERIFIER_assert((if ~nlen~0 - 1 - ~i~0 < ~nlen~0 then 1 else 0)); {1419#true} is VALID [2020-07-18 06:37:58,168 INFO L280 TraceCheckUtils]: 21: Hoare triple {1419#true} ~cond := #in~cond; {1419#true} is VALID [2020-07-18 06:37:58,168 INFO L280 TraceCheckUtils]: 22: Hoare triple {1419#true} assume !(0 == ~cond); {1419#true} is VALID [2020-07-18 06:37:58,168 INFO L280 TraceCheckUtils]: 23: Hoare triple {1419#true} assume true; {1419#true} is VALID [2020-07-18 06:37:58,169 INFO L275 TraceCheckUtils]: 24: Hoare quadruple {1419#true} {1423#(<= main_~j~0 0)} #73#return; {1423#(<= main_~j~0 0)} is VALID [2020-07-18 06:37:58,170 INFO L280 TraceCheckUtils]: 25: Hoare triple {1423#(<= main_~j~0 0)} #t~post2 := ~j~0; {1432#(<= |main_#t~post2| 0)} is VALID [2020-07-18 06:37:58,171 INFO L280 TraceCheckUtils]: 26: Hoare triple {1432#(<= |main_#t~post2| 0)} ~j~0 := 1 + #t~post2; {1433#(<= main_~j~0 1)} is VALID [2020-07-18 06:37:58,171 INFO L280 TraceCheckUtils]: 27: Hoare triple {1433#(<= main_~j~0 1)} havoc #t~post2; {1433#(<= main_~j~0 1)} is VALID [2020-07-18 06:37:58,172 INFO L280 TraceCheckUtils]: 28: Hoare triple {1433#(<= main_~j~0 1)} assume !!(~j~0 < 8); {1433#(<= main_~j~0 1)} is VALID [2020-07-18 06:37:58,172 INFO L263 TraceCheckUtils]: 29: Hoare triple {1433#(<= main_~j~0 1)} call __VERIFIER_assert((if 0 <= ~nlen~0 - 1 - ~i~0 then 1 else 0)); {1419#true} is VALID [2020-07-18 06:37:58,172 INFO L280 TraceCheckUtils]: 30: Hoare triple {1419#true} ~cond := #in~cond; {1419#true} is VALID [2020-07-18 06:37:58,172 INFO L280 TraceCheckUtils]: 31: Hoare triple {1419#true} assume !(0 == ~cond); {1419#true} is VALID [2020-07-18 06:37:58,173 INFO L280 TraceCheckUtils]: 32: Hoare triple {1419#true} assume true; {1419#true} is VALID [2020-07-18 06:37:58,174 INFO L275 TraceCheckUtils]: 33: Hoare quadruple {1419#true} {1433#(<= main_~j~0 1)} #71#return; {1433#(<= main_~j~0 1)} is VALID [2020-07-18 06:37:58,174 INFO L263 TraceCheckUtils]: 34: Hoare triple {1433#(<= main_~j~0 1)} call __VERIFIER_assert((if ~nlen~0 - 1 - ~i~0 < ~nlen~0 then 1 else 0)); {1419#true} is VALID [2020-07-18 06:37:58,174 INFO L280 TraceCheckUtils]: 35: Hoare triple {1419#true} ~cond := #in~cond; {1419#true} is VALID [2020-07-18 06:37:58,174 INFO L280 TraceCheckUtils]: 36: Hoare triple {1419#true} assume !(0 == ~cond); {1419#true} is VALID [2020-07-18 06:37:58,175 INFO L280 TraceCheckUtils]: 37: Hoare triple {1419#true} assume true; {1419#true} is VALID [2020-07-18 06:37:58,175 INFO L275 TraceCheckUtils]: 38: Hoare quadruple {1419#true} {1433#(<= main_~j~0 1)} #73#return; {1433#(<= main_~j~0 1)} is VALID [2020-07-18 06:37:58,176 INFO L280 TraceCheckUtils]: 39: Hoare triple {1433#(<= main_~j~0 1)} #t~post2 := ~j~0; {1442#(<= |main_#t~post2| 1)} is VALID [2020-07-18 06:37:58,177 INFO L280 TraceCheckUtils]: 40: Hoare triple {1442#(<= |main_#t~post2| 1)} ~j~0 := 1 + #t~post2; {1443#(<= main_~j~0 2)} is VALID [2020-07-18 06:37:58,178 INFO L280 TraceCheckUtils]: 41: Hoare triple {1443#(<= main_~j~0 2)} havoc #t~post2; {1443#(<= main_~j~0 2)} is VALID [2020-07-18 06:37:58,178 INFO L280 TraceCheckUtils]: 42: Hoare triple {1443#(<= main_~j~0 2)} assume !(~j~0 < 8); {1420#false} is VALID [2020-07-18 06:37:58,179 INFO L280 TraceCheckUtils]: 43: Hoare triple {1420#false} #t~post1 := ~i~0; {1420#false} is VALID [2020-07-18 06:37:58,179 INFO L280 TraceCheckUtils]: 44: Hoare triple {1420#false} ~i~0 := 1 + #t~post1; {1420#false} is VALID [2020-07-18 06:37:58,179 INFO L280 TraceCheckUtils]: 45: Hoare triple {1420#false} havoc #t~post1; {1420#false} is VALID [2020-07-18 06:37:58,179 INFO L280 TraceCheckUtils]: 46: Hoare triple {1420#false} assume !!(~i~0 < ~nlen~0); {1420#false} is VALID [2020-07-18 06:37:58,180 INFO L280 TraceCheckUtils]: 47: Hoare triple {1420#false} ~j~0 := 0; {1420#false} is VALID [2020-07-18 06:37:58,180 INFO L280 TraceCheckUtils]: 48: Hoare triple {1420#false} assume !!(~j~0 < 8); {1420#false} is VALID [2020-07-18 06:37:58,180 INFO L263 TraceCheckUtils]: 49: Hoare triple {1420#false} call __VERIFIER_assert((if 0 <= ~nlen~0 - 1 - ~i~0 then 1 else 0)); {1419#true} is VALID [2020-07-18 06:37:58,180 INFO L280 TraceCheckUtils]: 50: Hoare triple {1419#true} ~cond := #in~cond; {1419#true} is VALID [2020-07-18 06:37:58,181 INFO L280 TraceCheckUtils]: 51: Hoare triple {1419#true} assume !(0 == ~cond); {1419#true} is VALID [2020-07-18 06:37:58,181 INFO L280 TraceCheckUtils]: 52: Hoare triple {1419#true} assume true; {1419#true} is VALID [2020-07-18 06:37:58,181 INFO L275 TraceCheckUtils]: 53: Hoare quadruple {1419#true} {1420#false} #71#return; {1420#false} is VALID [2020-07-18 06:37:58,181 INFO L263 TraceCheckUtils]: 54: Hoare triple {1420#false} call __VERIFIER_assert((if ~nlen~0 - 1 - ~i~0 < ~nlen~0 then 1 else 0)); {1420#false} is VALID [2020-07-18 06:37:58,181 INFO L280 TraceCheckUtils]: 55: Hoare triple {1420#false} ~cond := #in~cond; {1420#false} is VALID [2020-07-18 06:37:58,182 INFO L280 TraceCheckUtils]: 56: Hoare triple {1420#false} assume 0 == ~cond; {1420#false} is VALID [2020-07-18 06:37:58,182 INFO L280 TraceCheckUtils]: 57: Hoare triple {1420#false} assume !false; {1420#false} is VALID [2020-07-18 06:37:58,186 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 19 proven. 8 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-07-18 06:37:58,186 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2003958286] [2020-07-18 06:37:58,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-18 06:37:58,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-07-18 06:37:58,186 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520278740] [2020-07-18 06:37:58,187 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 58 [2020-07-18 06:37:58,187 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-18 06:37:58,188 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 7 states. [2020-07-18 06:37:58,232 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 46 edges. 46 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 06:37:58,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-18 06:37:58,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-18 06:37:58,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-18 06:37:58,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-07-18 06:37:58,233 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand 7 states. [2020-07-18 06:37:58,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 06:37:58,552 INFO L93 Difference]: Finished difference Result 107 states and 127 transitions. [2020-07-18 06:37:58,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-18 06:37:58,552 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 58 [2020-07-18 06:37:58,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-18 06:37:58,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-07-18 06:37:58,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 74 transitions. [2020-07-18 06:37:58,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-07-18 06:37:58,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 74 transitions. [2020-07-18 06:37:58,559 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 9 states and 74 transitions. [2020-07-18 06:37:58,630 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 74 edges. 74 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 06:37:58,636 INFO L225 Difference]: With dead ends: 107 [2020-07-18 06:37:58,637 INFO L226 Difference]: Without dead ends: 79 [2020-07-18 06:37:58,639 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2020-07-18 06:37:58,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-07-18 06:37:58,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 71. [2020-07-18 06:37:58,752 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-18 06:37:58,752 INFO L82 GeneralOperation]: Start isEquivalent. First operand 79 states. Second operand 71 states. [2020-07-18 06:37:58,752 INFO L74 IsIncluded]: Start isIncluded. First operand 79 states. Second operand 71 states. [2020-07-18 06:37:58,752 INFO L87 Difference]: Start difference. First operand 79 states. Second operand 71 states. [2020-07-18 06:37:58,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 06:37:58,759 INFO L93 Difference]: Finished difference Result 79 states and 94 transitions. [2020-07-18 06:37:58,760 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 94 transitions. [2020-07-18 06:37:58,760 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 06:37:58,760 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 06:37:58,761 INFO L74 IsIncluded]: Start isIncluded. First operand 71 states. Second operand 79 states. [2020-07-18 06:37:58,761 INFO L87 Difference]: Start difference. First operand 71 states. Second operand 79 states. [2020-07-18 06:37:58,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 06:37:58,767 INFO L93 Difference]: Finished difference Result 79 states and 94 transitions. [2020-07-18 06:37:58,767 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 94 transitions. [2020-07-18 06:37:58,768 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 06:37:58,768 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 06:37:58,768 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-18 06:37:58,768 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-18 06:37:58,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-07-18 06:37:58,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 82 transitions. [2020-07-18 06:37:58,774 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 82 transitions. Word has length 58 [2020-07-18 06:37:58,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-18 06:37:58,776 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 82 transitions. [2020-07-18 06:37:58,776 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-18 06:37:58,777 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 71 states and 82 transitions. [2020-07-18 06:37:58,866 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 82 edges. 82 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 06:37:58,867 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 82 transitions. [2020-07-18 06:37:58,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-07-18 06:37:58,868 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 06:37:58,868 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-18 06:37:58,868 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-18 06:37:58,869 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 06:37:58,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 06:37:58,869 INFO L82 PathProgramCache]: Analyzing trace with hash -101962, now seen corresponding path program 3 times [2020-07-18 06:37:58,870 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 06:37:58,870 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1497906889] [2020-07-18 06:37:58,870 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 06:37:58,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:37:58,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:37:58,980 INFO L280 TraceCheckUtils]: 0: Hoare triple {1972#true} assume true; {1972#true} is VALID [2020-07-18 06:37:58,980 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {1972#true} {1972#true} #67#return; {1972#true} is VALID [2020-07-18 06:37:58,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:37:58,997 INFO L280 TraceCheckUtils]: 0: Hoare triple {1972#true} ~cond := #in~cond; {1972#true} is VALID [2020-07-18 06:37:58,998 INFO L280 TraceCheckUtils]: 1: Hoare triple {1972#true} assume !(0 == ~cond); {1972#true} is VALID [2020-07-18 06:37:58,998 INFO L280 TraceCheckUtils]: 2: Hoare triple {1972#true} assume true; {1972#true} is VALID [2020-07-18 06:37:58,999 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {1972#true} {1976#(<= main_~j~0 0)} #71#return; {1976#(<= main_~j~0 0)} is VALID [2020-07-18 06:37:59,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:37:59,006 INFO L280 TraceCheckUtils]: 0: Hoare triple {1972#true} ~cond := #in~cond; {1972#true} is VALID [2020-07-18 06:37:59,006 INFO L280 TraceCheckUtils]: 1: Hoare triple {1972#true} assume !(0 == ~cond); {1972#true} is VALID [2020-07-18 06:37:59,007 INFO L280 TraceCheckUtils]: 2: Hoare triple {1972#true} assume true; {1972#true} is VALID [2020-07-18 06:37:59,007 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {1972#true} {1976#(<= main_~j~0 0)} #73#return; {1976#(<= main_~j~0 0)} is VALID [2020-07-18 06:37:59,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:37:59,016 INFO L280 TraceCheckUtils]: 0: Hoare triple {1972#true} ~cond := #in~cond; {1972#true} is VALID [2020-07-18 06:37:59,016 INFO L280 TraceCheckUtils]: 1: Hoare triple {1972#true} assume !(0 == ~cond); {1972#true} is VALID [2020-07-18 06:37:59,016 INFO L280 TraceCheckUtils]: 2: Hoare triple {1972#true} assume true; {1972#true} is VALID [2020-07-18 06:37:59,017 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {1972#true} {1986#(<= main_~j~0 1)} #71#return; {1986#(<= main_~j~0 1)} is VALID [2020-07-18 06:37:59,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:37:59,022 INFO L280 TraceCheckUtils]: 0: Hoare triple {1972#true} ~cond := #in~cond; {1972#true} is VALID [2020-07-18 06:37:59,023 INFO L280 TraceCheckUtils]: 1: Hoare triple {1972#true} assume !(0 == ~cond); {1972#true} is VALID [2020-07-18 06:37:59,023 INFO L280 TraceCheckUtils]: 2: Hoare triple {1972#true} assume true; {1972#true} is VALID [2020-07-18 06:37:59,024 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {1972#true} {1986#(<= main_~j~0 1)} #73#return; {1986#(<= main_~j~0 1)} is VALID [2020-07-18 06:37:59,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:37:59,030 INFO L280 TraceCheckUtils]: 0: Hoare triple {1972#true} ~cond := #in~cond; {1972#true} is VALID [2020-07-18 06:37:59,030 INFO L280 TraceCheckUtils]: 1: Hoare triple {1972#true} assume !(0 == ~cond); {1972#true} is VALID [2020-07-18 06:37:59,031 INFO L280 TraceCheckUtils]: 2: Hoare triple {1972#true} assume true; {1972#true} is VALID [2020-07-18 06:37:59,032 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {1972#true} {1996#(<= main_~j~0 2)} #71#return; {1996#(<= main_~j~0 2)} is VALID [2020-07-18 06:37:59,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:37:59,038 INFO L280 TraceCheckUtils]: 0: Hoare triple {1972#true} ~cond := #in~cond; {1972#true} is VALID [2020-07-18 06:37:59,039 INFO L280 TraceCheckUtils]: 1: Hoare triple {1972#true} assume !(0 == ~cond); {1972#true} is VALID [2020-07-18 06:37:59,039 INFO L280 TraceCheckUtils]: 2: Hoare triple {1972#true} assume true; {1972#true} is VALID [2020-07-18 06:37:59,040 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {1972#true} {1996#(<= main_~j~0 2)} #73#return; {1996#(<= main_~j~0 2)} is VALID [2020-07-18 06:37:59,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:37:59,047 INFO L280 TraceCheckUtils]: 0: Hoare triple {1972#true} ~cond := #in~cond; {1972#true} is VALID [2020-07-18 06:37:59,047 INFO L280 TraceCheckUtils]: 1: Hoare triple {1972#true} assume !(0 == ~cond); {1972#true} is VALID [2020-07-18 06:37:59,047 INFO L280 TraceCheckUtils]: 2: Hoare triple {1972#true} assume true; {1972#true} is VALID [2020-07-18 06:37:59,048 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {1972#true} {1973#false} #71#return; {1973#false} is VALID [2020-07-18 06:37:59,048 INFO L263 TraceCheckUtils]: 0: Hoare triple {1972#true} call ULTIMATE.init(); {1972#true} is VALID [2020-07-18 06:37:59,048 INFO L280 TraceCheckUtils]: 1: Hoare triple {1972#true} assume true; {1972#true} is VALID [2020-07-18 06:37:59,049 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {1972#true} {1972#true} #67#return; {1972#true} is VALID [2020-07-18 06:37:59,049 INFO L263 TraceCheckUtils]: 3: Hoare triple {1972#true} call #t~ret3 := main(); {1972#true} is VALID [2020-07-18 06:37:59,049 INFO L280 TraceCheckUtils]: 4: Hoare triple {1972#true} havoc ~offset~0; {1972#true} is VALID [2020-07-18 06:37:59,049 INFO L280 TraceCheckUtils]: 5: Hoare triple {1972#true} havoc ~length~0; {1972#true} is VALID [2020-07-18 06:37:59,050 INFO L280 TraceCheckUtils]: 6: Hoare triple {1972#true} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; {1972#true} is VALID [2020-07-18 06:37:59,050 INFO L280 TraceCheckUtils]: 7: Hoare triple {1972#true} ~nlen~0 := #t~nondet0; {1972#true} is VALID [2020-07-18 06:37:59,050 INFO L280 TraceCheckUtils]: 8: Hoare triple {1972#true} havoc #t~nondet0; {1972#true} is VALID [2020-07-18 06:37:59,051 INFO L280 TraceCheckUtils]: 9: Hoare triple {1972#true} havoc ~i~0; {1972#true} is VALID [2020-07-18 06:37:59,051 INFO L280 TraceCheckUtils]: 10: Hoare triple {1972#true} havoc ~j~0; {1972#true} is VALID [2020-07-18 06:37:59,051 INFO L280 TraceCheckUtils]: 11: Hoare triple {1972#true} ~i~0 := 0; {1972#true} is VALID [2020-07-18 06:37:59,051 INFO L280 TraceCheckUtils]: 12: Hoare triple {1972#true} assume !!(~i~0 < ~nlen~0); {1972#true} is VALID [2020-07-18 06:37:59,052 INFO L280 TraceCheckUtils]: 13: Hoare triple {1972#true} ~j~0 := 0; {1976#(<= main_~j~0 0)} is VALID [2020-07-18 06:37:59,053 INFO L280 TraceCheckUtils]: 14: Hoare triple {1976#(<= main_~j~0 0)} assume !!(~j~0 < 8); {1976#(<= main_~j~0 0)} is VALID [2020-07-18 06:37:59,053 INFO L263 TraceCheckUtils]: 15: Hoare triple {1976#(<= main_~j~0 0)} call __VERIFIER_assert((if 0 <= ~nlen~0 - 1 - ~i~0 then 1 else 0)); {1972#true} is VALID [2020-07-18 06:37:59,054 INFO L280 TraceCheckUtils]: 16: Hoare triple {1972#true} ~cond := #in~cond; {1972#true} is VALID [2020-07-18 06:37:59,054 INFO L280 TraceCheckUtils]: 17: Hoare triple {1972#true} assume !(0 == ~cond); {1972#true} is VALID [2020-07-18 06:37:59,054 INFO L280 TraceCheckUtils]: 18: Hoare triple {1972#true} assume true; {1972#true} is VALID [2020-07-18 06:37:59,055 INFO L275 TraceCheckUtils]: 19: Hoare quadruple {1972#true} {1976#(<= main_~j~0 0)} #71#return; {1976#(<= main_~j~0 0)} is VALID [2020-07-18 06:37:59,055 INFO L263 TraceCheckUtils]: 20: Hoare triple {1976#(<= main_~j~0 0)} call __VERIFIER_assert((if ~nlen~0 - 1 - ~i~0 < ~nlen~0 then 1 else 0)); {1972#true} is VALID [2020-07-18 06:37:59,056 INFO L280 TraceCheckUtils]: 21: Hoare triple {1972#true} ~cond := #in~cond; {1972#true} is VALID [2020-07-18 06:37:59,056 INFO L280 TraceCheckUtils]: 22: Hoare triple {1972#true} assume !(0 == ~cond); {1972#true} is VALID [2020-07-18 06:37:59,056 INFO L280 TraceCheckUtils]: 23: Hoare triple {1972#true} assume true; {1972#true} is VALID [2020-07-18 06:37:59,057 INFO L275 TraceCheckUtils]: 24: Hoare quadruple {1972#true} {1976#(<= main_~j~0 0)} #73#return; {1976#(<= main_~j~0 0)} is VALID [2020-07-18 06:37:59,057 INFO L280 TraceCheckUtils]: 25: Hoare triple {1976#(<= main_~j~0 0)} #t~post2 := ~j~0; {1985#(<= |main_#t~post2| 0)} is VALID [2020-07-18 06:37:59,058 INFO L280 TraceCheckUtils]: 26: Hoare triple {1985#(<= |main_#t~post2| 0)} ~j~0 := 1 + #t~post2; {1986#(<= main_~j~0 1)} is VALID [2020-07-18 06:37:59,059 INFO L280 TraceCheckUtils]: 27: Hoare triple {1986#(<= main_~j~0 1)} havoc #t~post2; {1986#(<= main_~j~0 1)} is VALID [2020-07-18 06:37:59,060 INFO L280 TraceCheckUtils]: 28: Hoare triple {1986#(<= main_~j~0 1)} assume !!(~j~0 < 8); {1986#(<= main_~j~0 1)} is VALID [2020-07-18 06:37:59,060 INFO L263 TraceCheckUtils]: 29: Hoare triple {1986#(<= main_~j~0 1)} call __VERIFIER_assert((if 0 <= ~nlen~0 - 1 - ~i~0 then 1 else 0)); {1972#true} is VALID [2020-07-18 06:37:59,060 INFO L280 TraceCheckUtils]: 30: Hoare triple {1972#true} ~cond := #in~cond; {1972#true} is VALID [2020-07-18 06:37:59,061 INFO L280 TraceCheckUtils]: 31: Hoare triple {1972#true} assume !(0 == ~cond); {1972#true} is VALID [2020-07-18 06:37:59,061 INFO L280 TraceCheckUtils]: 32: Hoare triple {1972#true} assume true; {1972#true} is VALID [2020-07-18 06:37:59,062 INFO L275 TraceCheckUtils]: 33: Hoare quadruple {1972#true} {1986#(<= main_~j~0 1)} #71#return; {1986#(<= main_~j~0 1)} is VALID [2020-07-18 06:37:59,062 INFO L263 TraceCheckUtils]: 34: Hoare triple {1986#(<= main_~j~0 1)} call __VERIFIER_assert((if ~nlen~0 - 1 - ~i~0 < ~nlen~0 then 1 else 0)); {1972#true} is VALID [2020-07-18 06:37:59,062 INFO L280 TraceCheckUtils]: 35: Hoare triple {1972#true} ~cond := #in~cond; {1972#true} is VALID [2020-07-18 06:37:59,063 INFO L280 TraceCheckUtils]: 36: Hoare triple {1972#true} assume !(0 == ~cond); {1972#true} is VALID [2020-07-18 06:37:59,063 INFO L280 TraceCheckUtils]: 37: Hoare triple {1972#true} assume true; {1972#true} is VALID [2020-07-18 06:37:59,064 INFO L275 TraceCheckUtils]: 38: Hoare quadruple {1972#true} {1986#(<= main_~j~0 1)} #73#return; {1986#(<= main_~j~0 1)} is VALID [2020-07-18 06:37:59,064 INFO L280 TraceCheckUtils]: 39: Hoare triple {1986#(<= main_~j~0 1)} #t~post2 := ~j~0; {1995#(<= |main_#t~post2| 1)} is VALID [2020-07-18 06:37:59,065 INFO L280 TraceCheckUtils]: 40: Hoare triple {1995#(<= |main_#t~post2| 1)} ~j~0 := 1 + #t~post2; {1996#(<= main_~j~0 2)} is VALID [2020-07-18 06:37:59,066 INFO L280 TraceCheckUtils]: 41: Hoare triple {1996#(<= main_~j~0 2)} havoc #t~post2; {1996#(<= main_~j~0 2)} is VALID [2020-07-18 06:37:59,066 INFO L280 TraceCheckUtils]: 42: Hoare triple {1996#(<= main_~j~0 2)} assume !!(~j~0 < 8); {1996#(<= main_~j~0 2)} is VALID [2020-07-18 06:37:59,067 INFO L263 TraceCheckUtils]: 43: Hoare triple {1996#(<= main_~j~0 2)} call __VERIFIER_assert((if 0 <= ~nlen~0 - 1 - ~i~0 then 1 else 0)); {1972#true} is VALID [2020-07-18 06:37:59,067 INFO L280 TraceCheckUtils]: 44: Hoare triple {1972#true} ~cond := #in~cond; {1972#true} is VALID [2020-07-18 06:37:59,067 INFO L280 TraceCheckUtils]: 45: Hoare triple {1972#true} assume !(0 == ~cond); {1972#true} is VALID [2020-07-18 06:37:59,068 INFO L280 TraceCheckUtils]: 46: Hoare triple {1972#true} assume true; {1972#true} is VALID [2020-07-18 06:37:59,069 INFO L275 TraceCheckUtils]: 47: Hoare quadruple {1972#true} {1996#(<= main_~j~0 2)} #71#return; {1996#(<= main_~j~0 2)} is VALID [2020-07-18 06:37:59,069 INFO L263 TraceCheckUtils]: 48: Hoare triple {1996#(<= main_~j~0 2)} call __VERIFIER_assert((if ~nlen~0 - 1 - ~i~0 < ~nlen~0 then 1 else 0)); {1972#true} is VALID [2020-07-18 06:37:59,069 INFO L280 TraceCheckUtils]: 49: Hoare triple {1972#true} ~cond := #in~cond; {1972#true} is VALID [2020-07-18 06:37:59,069 INFO L280 TraceCheckUtils]: 50: Hoare triple {1972#true} assume !(0 == ~cond); {1972#true} is VALID [2020-07-18 06:37:59,070 INFO L280 TraceCheckUtils]: 51: Hoare triple {1972#true} assume true; {1972#true} is VALID [2020-07-18 06:37:59,070 INFO L275 TraceCheckUtils]: 52: Hoare quadruple {1972#true} {1996#(<= main_~j~0 2)} #73#return; {1996#(<= main_~j~0 2)} is VALID [2020-07-18 06:37:59,071 INFO L280 TraceCheckUtils]: 53: Hoare triple {1996#(<= main_~j~0 2)} #t~post2 := ~j~0; {2005#(<= |main_#t~post2| 2)} is VALID [2020-07-18 06:37:59,072 INFO L280 TraceCheckUtils]: 54: Hoare triple {2005#(<= |main_#t~post2| 2)} ~j~0 := 1 + #t~post2; {2006#(<= main_~j~0 3)} is VALID [2020-07-18 06:37:59,073 INFO L280 TraceCheckUtils]: 55: Hoare triple {2006#(<= main_~j~0 3)} havoc #t~post2; {2006#(<= main_~j~0 3)} is VALID [2020-07-18 06:37:59,074 INFO L280 TraceCheckUtils]: 56: Hoare triple {2006#(<= main_~j~0 3)} assume !(~j~0 < 8); {1973#false} is VALID [2020-07-18 06:37:59,074 INFO L280 TraceCheckUtils]: 57: Hoare triple {1973#false} #t~post1 := ~i~0; {1973#false} is VALID [2020-07-18 06:37:59,074 INFO L280 TraceCheckUtils]: 58: Hoare triple {1973#false} ~i~0 := 1 + #t~post1; {1973#false} is VALID [2020-07-18 06:37:59,074 INFO L280 TraceCheckUtils]: 59: Hoare triple {1973#false} havoc #t~post1; {1973#false} is VALID [2020-07-18 06:37:59,075 INFO L280 TraceCheckUtils]: 60: Hoare triple {1973#false} assume !!(~i~0 < ~nlen~0); {1973#false} is VALID [2020-07-18 06:37:59,075 INFO L280 TraceCheckUtils]: 61: Hoare triple {1973#false} ~j~0 := 0; {1973#false} is VALID [2020-07-18 06:37:59,075 INFO L280 TraceCheckUtils]: 62: Hoare triple {1973#false} assume !!(~j~0 < 8); {1973#false} is VALID [2020-07-18 06:37:59,075 INFO L263 TraceCheckUtils]: 63: Hoare triple {1973#false} call __VERIFIER_assert((if 0 <= ~nlen~0 - 1 - ~i~0 then 1 else 0)); {1972#true} is VALID [2020-07-18 06:37:59,076 INFO L280 TraceCheckUtils]: 64: Hoare triple {1972#true} ~cond := #in~cond; {1972#true} is VALID [2020-07-18 06:37:59,076 INFO L280 TraceCheckUtils]: 65: Hoare triple {1972#true} assume !(0 == ~cond); {1972#true} is VALID [2020-07-18 06:37:59,076 INFO L280 TraceCheckUtils]: 66: Hoare triple {1972#true} assume true; {1972#true} is VALID [2020-07-18 06:37:59,076 INFO L275 TraceCheckUtils]: 67: Hoare quadruple {1972#true} {1973#false} #71#return; {1973#false} is VALID [2020-07-18 06:37:59,076 INFO L263 TraceCheckUtils]: 68: Hoare triple {1973#false} call __VERIFIER_assert((if ~nlen~0 - 1 - ~i~0 < ~nlen~0 then 1 else 0)); {1973#false} is VALID [2020-07-18 06:37:59,077 INFO L280 TraceCheckUtils]: 69: Hoare triple {1973#false} ~cond := #in~cond; {1973#false} is VALID [2020-07-18 06:37:59,077 INFO L280 TraceCheckUtils]: 70: Hoare triple {1973#false} assume 0 == ~cond; {1973#false} is VALID [2020-07-18 06:37:59,077 INFO L280 TraceCheckUtils]: 71: Hoare triple {1973#false} assume !false; {1973#false} is VALID [2020-07-18 06:37:59,081 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 26 proven. 21 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-07-18 06:37:59,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1497906889] [2020-07-18 06:37:59,082 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-18 06:37:59,082 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-07-18 06:37:59,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987894029] [2020-07-18 06:37:59,083 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 72 [2020-07-18 06:37:59,083 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-18 06:37:59,084 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 9 states. [2020-07-18 06:37:59,138 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 54 edges. 54 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 06:37:59,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-18 06:37:59,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-18 06:37:59,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-18 06:37:59,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-07-18 06:37:59,140 INFO L87 Difference]: Start difference. First operand 71 states and 82 transitions. Second operand 9 states. [2020-07-18 06:37:59,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 06:37:59,597 INFO L93 Difference]: Finished difference Result 125 states and 151 transitions. [2020-07-18 06:37:59,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-18 06:37:59,597 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 72 [2020-07-18 06:37:59,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-18 06:37:59,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-07-18 06:37:59,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 82 transitions. [2020-07-18 06:37:59,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-07-18 06:37:59,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 82 transitions. [2020-07-18 06:37:59,603 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 12 states and 82 transitions. [2020-07-18 06:37:59,686 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 82 edges. 82 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 06:37:59,689 INFO L225 Difference]: With dead ends: 125 [2020-07-18 06:37:59,689 INFO L226 Difference]: Without dead ends: 91 [2020-07-18 06:37:59,690 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=132, Unknown=0, NotChecked=0, Total=210 [2020-07-18 06:37:59,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-07-18 06:37:59,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 83. [2020-07-18 06:37:59,814 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-18 06:37:59,814 INFO L82 GeneralOperation]: Start isEquivalent. First operand 91 states. Second operand 83 states. [2020-07-18 06:37:59,814 INFO L74 IsIncluded]: Start isIncluded. First operand 91 states. Second operand 83 states. [2020-07-18 06:37:59,814 INFO L87 Difference]: Start difference. First operand 91 states. Second operand 83 states. [2020-07-18 06:37:59,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 06:37:59,819 INFO L93 Difference]: Finished difference Result 91 states and 110 transitions. [2020-07-18 06:37:59,819 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 110 transitions. [2020-07-18 06:37:59,820 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 06:37:59,820 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 06:37:59,820 INFO L74 IsIncluded]: Start isIncluded. First operand 83 states. Second operand 91 states. [2020-07-18 06:37:59,820 INFO L87 Difference]: Start difference. First operand 83 states. Second operand 91 states. [2020-07-18 06:37:59,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 06:37:59,825 INFO L93 Difference]: Finished difference Result 91 states and 110 transitions. [2020-07-18 06:37:59,825 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 110 transitions. [2020-07-18 06:37:59,826 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 06:37:59,826 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 06:37:59,826 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-18 06:37:59,826 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-18 06:37:59,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-07-18 06:37:59,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 98 transitions. [2020-07-18 06:37:59,830 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 98 transitions. Word has length 72 [2020-07-18 06:37:59,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-18 06:37:59,831 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 98 transitions. [2020-07-18 06:37:59,831 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-18 06:37:59,831 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 83 states and 98 transitions. [2020-07-18 06:37:59,944 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 98 edges. 98 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 06:37:59,944 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 98 transitions. [2020-07-18 06:37:59,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-07-18 06:37:59,945 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 06:37:59,945 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 5, 5, 5, 5, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-18 06:37:59,946 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-18 06:37:59,946 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 06:37:59,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 06:37:59,946 INFO L82 PathProgramCache]: Analyzing trace with hash -1976659241, now seen corresponding path program 4 times [2020-07-18 06:37:59,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 06:37:59,947 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [238616680] [2020-07-18 06:37:59,947 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 06:37:59,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:38:00,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:38:00,096 INFO L280 TraceCheckUtils]: 0: Hoare triple {2623#true} assume true; {2623#true} is VALID [2020-07-18 06:38:00,096 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {2623#true} {2623#true} #67#return; {2623#true} is VALID [2020-07-18 06:38:00,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:38:00,103 INFO L280 TraceCheckUtils]: 0: Hoare triple {2623#true} ~cond := #in~cond; {2623#true} is VALID [2020-07-18 06:38:00,104 INFO L280 TraceCheckUtils]: 1: Hoare triple {2623#true} assume !(0 == ~cond); {2623#true} is VALID [2020-07-18 06:38:00,104 INFO L280 TraceCheckUtils]: 2: Hoare triple {2623#true} assume true; {2623#true} is VALID [2020-07-18 06:38:00,104 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {2623#true} {2627#(<= main_~j~0 0)} #71#return; {2627#(<= main_~j~0 0)} is VALID [2020-07-18 06:38:00,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:38:00,116 INFO L280 TraceCheckUtils]: 0: Hoare triple {2623#true} ~cond := #in~cond; {2623#true} is VALID [2020-07-18 06:38:00,116 INFO L280 TraceCheckUtils]: 1: Hoare triple {2623#true} assume !(0 == ~cond); {2623#true} is VALID [2020-07-18 06:38:00,116 INFO L280 TraceCheckUtils]: 2: Hoare triple {2623#true} assume true; {2623#true} is VALID [2020-07-18 06:38:00,117 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {2623#true} {2627#(<= main_~j~0 0)} #73#return; {2627#(<= main_~j~0 0)} is VALID [2020-07-18 06:38:00,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:38:00,130 INFO L280 TraceCheckUtils]: 0: Hoare triple {2623#true} ~cond := #in~cond; {2623#true} is VALID [2020-07-18 06:38:00,131 INFO L280 TraceCheckUtils]: 1: Hoare triple {2623#true} assume !(0 == ~cond); {2623#true} is VALID [2020-07-18 06:38:00,131 INFO L280 TraceCheckUtils]: 2: Hoare triple {2623#true} assume true; {2623#true} is VALID [2020-07-18 06:38:00,133 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {2623#true} {2637#(<= main_~j~0 1)} #71#return; {2637#(<= main_~j~0 1)} is VALID [2020-07-18 06:38:00,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:38:00,142 INFO L280 TraceCheckUtils]: 0: Hoare triple {2623#true} ~cond := #in~cond; {2623#true} is VALID [2020-07-18 06:38:00,142 INFO L280 TraceCheckUtils]: 1: Hoare triple {2623#true} assume !(0 == ~cond); {2623#true} is VALID [2020-07-18 06:38:00,143 INFO L280 TraceCheckUtils]: 2: Hoare triple {2623#true} assume true; {2623#true} is VALID [2020-07-18 06:38:00,143 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {2623#true} {2637#(<= main_~j~0 1)} #73#return; {2637#(<= main_~j~0 1)} is VALID [2020-07-18 06:38:00,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:38:00,153 INFO L280 TraceCheckUtils]: 0: Hoare triple {2623#true} ~cond := #in~cond; {2623#true} is VALID [2020-07-18 06:38:00,153 INFO L280 TraceCheckUtils]: 1: Hoare triple {2623#true} assume !(0 == ~cond); {2623#true} is VALID [2020-07-18 06:38:00,154 INFO L280 TraceCheckUtils]: 2: Hoare triple {2623#true} assume true; {2623#true} is VALID [2020-07-18 06:38:00,155 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {2623#true} {2647#(<= main_~j~0 2)} #71#return; {2647#(<= main_~j~0 2)} is VALID [2020-07-18 06:38:00,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:38:00,160 INFO L280 TraceCheckUtils]: 0: Hoare triple {2623#true} ~cond := #in~cond; {2623#true} is VALID [2020-07-18 06:38:00,160 INFO L280 TraceCheckUtils]: 1: Hoare triple {2623#true} assume !(0 == ~cond); {2623#true} is VALID [2020-07-18 06:38:00,160 INFO L280 TraceCheckUtils]: 2: Hoare triple {2623#true} assume true; {2623#true} is VALID [2020-07-18 06:38:00,161 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {2623#true} {2647#(<= main_~j~0 2)} #73#return; {2647#(<= main_~j~0 2)} is VALID [2020-07-18 06:38:00,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:38:00,170 INFO L280 TraceCheckUtils]: 0: Hoare triple {2623#true} ~cond := #in~cond; {2623#true} is VALID [2020-07-18 06:38:00,170 INFO L280 TraceCheckUtils]: 1: Hoare triple {2623#true} assume !(0 == ~cond); {2623#true} is VALID [2020-07-18 06:38:00,170 INFO L280 TraceCheckUtils]: 2: Hoare triple {2623#true} assume true; {2623#true} is VALID [2020-07-18 06:38:00,171 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {2623#true} {2657#(<= main_~j~0 3)} #71#return; {2657#(<= main_~j~0 3)} is VALID [2020-07-18 06:38:00,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:38:00,181 INFO L280 TraceCheckUtils]: 0: Hoare triple {2623#true} ~cond := #in~cond; {2623#true} is VALID [2020-07-18 06:38:00,182 INFO L280 TraceCheckUtils]: 1: Hoare triple {2623#true} assume !(0 == ~cond); {2623#true} is VALID [2020-07-18 06:38:00,182 INFO L280 TraceCheckUtils]: 2: Hoare triple {2623#true} assume true; {2623#true} is VALID [2020-07-18 06:38:00,183 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {2623#true} {2657#(<= main_~j~0 3)} #73#return; {2657#(<= main_~j~0 3)} is VALID [2020-07-18 06:38:00,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:38:00,191 INFO L280 TraceCheckUtils]: 0: Hoare triple {2623#true} ~cond := #in~cond; {2623#true} is VALID [2020-07-18 06:38:00,192 INFO L280 TraceCheckUtils]: 1: Hoare triple {2623#true} assume !(0 == ~cond); {2623#true} is VALID [2020-07-18 06:38:00,192 INFO L280 TraceCheckUtils]: 2: Hoare triple {2623#true} assume true; {2623#true} is VALID [2020-07-18 06:38:00,193 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {2623#true} {2624#false} #71#return; {2624#false} is VALID [2020-07-18 06:38:00,193 INFO L263 TraceCheckUtils]: 0: Hoare triple {2623#true} call ULTIMATE.init(); {2623#true} is VALID [2020-07-18 06:38:00,194 INFO L280 TraceCheckUtils]: 1: Hoare triple {2623#true} assume true; {2623#true} is VALID [2020-07-18 06:38:00,194 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {2623#true} {2623#true} #67#return; {2623#true} is VALID [2020-07-18 06:38:00,194 INFO L263 TraceCheckUtils]: 3: Hoare triple {2623#true} call #t~ret3 := main(); {2623#true} is VALID [2020-07-18 06:38:00,194 INFO L280 TraceCheckUtils]: 4: Hoare triple {2623#true} havoc ~offset~0; {2623#true} is VALID [2020-07-18 06:38:00,194 INFO L280 TraceCheckUtils]: 5: Hoare triple {2623#true} havoc ~length~0; {2623#true} is VALID [2020-07-18 06:38:00,195 INFO L280 TraceCheckUtils]: 6: Hoare triple {2623#true} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; {2623#true} is VALID [2020-07-18 06:38:00,195 INFO L280 TraceCheckUtils]: 7: Hoare triple {2623#true} ~nlen~0 := #t~nondet0; {2623#true} is VALID [2020-07-18 06:38:00,195 INFO L280 TraceCheckUtils]: 8: Hoare triple {2623#true} havoc #t~nondet0; {2623#true} is VALID [2020-07-18 06:38:00,195 INFO L280 TraceCheckUtils]: 9: Hoare triple {2623#true} havoc ~i~0; {2623#true} is VALID [2020-07-18 06:38:00,196 INFO L280 TraceCheckUtils]: 10: Hoare triple {2623#true} havoc ~j~0; {2623#true} is VALID [2020-07-18 06:38:00,196 INFO L280 TraceCheckUtils]: 11: Hoare triple {2623#true} ~i~0 := 0; {2623#true} is VALID [2020-07-18 06:38:00,196 INFO L280 TraceCheckUtils]: 12: Hoare triple {2623#true} assume !!(~i~0 < ~nlen~0); {2623#true} is VALID [2020-07-18 06:38:00,197 INFO L280 TraceCheckUtils]: 13: Hoare triple {2623#true} ~j~0 := 0; {2627#(<= main_~j~0 0)} is VALID [2020-07-18 06:38:00,197 INFO L280 TraceCheckUtils]: 14: Hoare triple {2627#(<= main_~j~0 0)} assume !!(~j~0 < 8); {2627#(<= main_~j~0 0)} is VALID [2020-07-18 06:38:00,198 INFO L263 TraceCheckUtils]: 15: Hoare triple {2627#(<= main_~j~0 0)} call __VERIFIER_assert((if 0 <= ~nlen~0 - 1 - ~i~0 then 1 else 0)); {2623#true} is VALID [2020-07-18 06:38:00,198 INFO L280 TraceCheckUtils]: 16: Hoare triple {2623#true} ~cond := #in~cond; {2623#true} is VALID [2020-07-18 06:38:00,198 INFO L280 TraceCheckUtils]: 17: Hoare triple {2623#true} assume !(0 == ~cond); {2623#true} is VALID [2020-07-18 06:38:00,198 INFO L280 TraceCheckUtils]: 18: Hoare triple {2623#true} assume true; {2623#true} is VALID [2020-07-18 06:38:00,202 INFO L275 TraceCheckUtils]: 19: Hoare quadruple {2623#true} {2627#(<= main_~j~0 0)} #71#return; {2627#(<= main_~j~0 0)} is VALID [2020-07-18 06:38:00,205 INFO L263 TraceCheckUtils]: 20: Hoare triple {2627#(<= main_~j~0 0)} call __VERIFIER_assert((if ~nlen~0 - 1 - ~i~0 < ~nlen~0 then 1 else 0)); {2623#true} is VALID [2020-07-18 06:38:00,205 INFO L280 TraceCheckUtils]: 21: Hoare triple {2623#true} ~cond := #in~cond; {2623#true} is VALID [2020-07-18 06:38:00,205 INFO L280 TraceCheckUtils]: 22: Hoare triple {2623#true} assume !(0 == ~cond); {2623#true} is VALID [2020-07-18 06:38:00,206 INFO L280 TraceCheckUtils]: 23: Hoare triple {2623#true} assume true; {2623#true} is VALID [2020-07-18 06:38:00,206 INFO L275 TraceCheckUtils]: 24: Hoare quadruple {2623#true} {2627#(<= main_~j~0 0)} #73#return; {2627#(<= main_~j~0 0)} is VALID [2020-07-18 06:38:00,207 INFO L280 TraceCheckUtils]: 25: Hoare triple {2627#(<= main_~j~0 0)} #t~post2 := ~j~0; {2636#(<= |main_#t~post2| 0)} is VALID [2020-07-18 06:38:00,208 INFO L280 TraceCheckUtils]: 26: Hoare triple {2636#(<= |main_#t~post2| 0)} ~j~0 := 1 + #t~post2; {2637#(<= main_~j~0 1)} is VALID [2020-07-18 06:38:00,208 INFO L280 TraceCheckUtils]: 27: Hoare triple {2637#(<= main_~j~0 1)} havoc #t~post2; {2637#(<= main_~j~0 1)} is VALID [2020-07-18 06:38:00,209 INFO L280 TraceCheckUtils]: 28: Hoare triple {2637#(<= main_~j~0 1)} assume !!(~j~0 < 8); {2637#(<= main_~j~0 1)} is VALID [2020-07-18 06:38:00,209 INFO L263 TraceCheckUtils]: 29: Hoare triple {2637#(<= main_~j~0 1)} call __VERIFIER_assert((if 0 <= ~nlen~0 - 1 - ~i~0 then 1 else 0)); {2623#true} is VALID [2020-07-18 06:38:00,209 INFO L280 TraceCheckUtils]: 30: Hoare triple {2623#true} ~cond := #in~cond; {2623#true} is VALID [2020-07-18 06:38:00,210 INFO L280 TraceCheckUtils]: 31: Hoare triple {2623#true} assume !(0 == ~cond); {2623#true} is VALID [2020-07-18 06:38:00,210 INFO L280 TraceCheckUtils]: 32: Hoare triple {2623#true} assume true; {2623#true} is VALID [2020-07-18 06:38:00,211 INFO L275 TraceCheckUtils]: 33: Hoare quadruple {2623#true} {2637#(<= main_~j~0 1)} #71#return; {2637#(<= main_~j~0 1)} is VALID [2020-07-18 06:38:00,211 INFO L263 TraceCheckUtils]: 34: Hoare triple {2637#(<= main_~j~0 1)} call __VERIFIER_assert((if ~nlen~0 - 1 - ~i~0 < ~nlen~0 then 1 else 0)); {2623#true} is VALID [2020-07-18 06:38:00,211 INFO L280 TraceCheckUtils]: 35: Hoare triple {2623#true} ~cond := #in~cond; {2623#true} is VALID [2020-07-18 06:38:00,211 INFO L280 TraceCheckUtils]: 36: Hoare triple {2623#true} assume !(0 == ~cond); {2623#true} is VALID [2020-07-18 06:38:00,211 INFO L280 TraceCheckUtils]: 37: Hoare triple {2623#true} assume true; {2623#true} is VALID [2020-07-18 06:38:00,212 INFO L275 TraceCheckUtils]: 38: Hoare quadruple {2623#true} {2637#(<= main_~j~0 1)} #73#return; {2637#(<= main_~j~0 1)} is VALID [2020-07-18 06:38:00,213 INFO L280 TraceCheckUtils]: 39: Hoare triple {2637#(<= main_~j~0 1)} #t~post2 := ~j~0; {2646#(<= |main_#t~post2| 1)} is VALID [2020-07-18 06:38:00,214 INFO L280 TraceCheckUtils]: 40: Hoare triple {2646#(<= |main_#t~post2| 1)} ~j~0 := 1 + #t~post2; {2647#(<= main_~j~0 2)} is VALID [2020-07-18 06:38:00,214 INFO L280 TraceCheckUtils]: 41: Hoare triple {2647#(<= main_~j~0 2)} havoc #t~post2; {2647#(<= main_~j~0 2)} is VALID [2020-07-18 06:38:00,215 INFO L280 TraceCheckUtils]: 42: Hoare triple {2647#(<= main_~j~0 2)} assume !!(~j~0 < 8); {2647#(<= main_~j~0 2)} is VALID [2020-07-18 06:38:00,215 INFO L263 TraceCheckUtils]: 43: Hoare triple {2647#(<= main_~j~0 2)} call __VERIFIER_assert((if 0 <= ~nlen~0 - 1 - ~i~0 then 1 else 0)); {2623#true} is VALID [2020-07-18 06:38:00,215 INFO L280 TraceCheckUtils]: 44: Hoare triple {2623#true} ~cond := #in~cond; {2623#true} is VALID [2020-07-18 06:38:00,215 INFO L280 TraceCheckUtils]: 45: Hoare triple {2623#true} assume !(0 == ~cond); {2623#true} is VALID [2020-07-18 06:38:00,216 INFO L280 TraceCheckUtils]: 46: Hoare triple {2623#true} assume true; {2623#true} is VALID [2020-07-18 06:38:00,216 INFO L275 TraceCheckUtils]: 47: Hoare quadruple {2623#true} {2647#(<= main_~j~0 2)} #71#return; {2647#(<= main_~j~0 2)} is VALID [2020-07-18 06:38:00,217 INFO L263 TraceCheckUtils]: 48: Hoare triple {2647#(<= main_~j~0 2)} call __VERIFIER_assert((if ~nlen~0 - 1 - ~i~0 < ~nlen~0 then 1 else 0)); {2623#true} is VALID [2020-07-18 06:38:00,217 INFO L280 TraceCheckUtils]: 49: Hoare triple {2623#true} ~cond := #in~cond; {2623#true} is VALID [2020-07-18 06:38:00,217 INFO L280 TraceCheckUtils]: 50: Hoare triple {2623#true} assume !(0 == ~cond); {2623#true} is VALID [2020-07-18 06:38:00,217 INFO L280 TraceCheckUtils]: 51: Hoare triple {2623#true} assume true; {2623#true} is VALID [2020-07-18 06:38:00,219 INFO L275 TraceCheckUtils]: 52: Hoare quadruple {2623#true} {2647#(<= main_~j~0 2)} #73#return; {2647#(<= main_~j~0 2)} is VALID [2020-07-18 06:38:00,221 INFO L280 TraceCheckUtils]: 53: Hoare triple {2647#(<= main_~j~0 2)} #t~post2 := ~j~0; {2656#(<= |main_#t~post2| 2)} is VALID [2020-07-18 06:38:00,221 INFO L280 TraceCheckUtils]: 54: Hoare triple {2656#(<= |main_#t~post2| 2)} ~j~0 := 1 + #t~post2; {2657#(<= main_~j~0 3)} is VALID [2020-07-18 06:38:00,222 INFO L280 TraceCheckUtils]: 55: Hoare triple {2657#(<= main_~j~0 3)} havoc #t~post2; {2657#(<= main_~j~0 3)} is VALID [2020-07-18 06:38:00,222 INFO L280 TraceCheckUtils]: 56: Hoare triple {2657#(<= main_~j~0 3)} assume !!(~j~0 < 8); {2657#(<= main_~j~0 3)} is VALID [2020-07-18 06:38:00,223 INFO L263 TraceCheckUtils]: 57: Hoare triple {2657#(<= main_~j~0 3)} call __VERIFIER_assert((if 0 <= ~nlen~0 - 1 - ~i~0 then 1 else 0)); {2623#true} is VALID [2020-07-18 06:38:00,223 INFO L280 TraceCheckUtils]: 58: Hoare triple {2623#true} ~cond := #in~cond; {2623#true} is VALID [2020-07-18 06:38:00,223 INFO L280 TraceCheckUtils]: 59: Hoare triple {2623#true} assume !(0 == ~cond); {2623#true} is VALID [2020-07-18 06:38:00,223 INFO L280 TraceCheckUtils]: 60: Hoare triple {2623#true} assume true; {2623#true} is VALID [2020-07-18 06:38:00,224 INFO L275 TraceCheckUtils]: 61: Hoare quadruple {2623#true} {2657#(<= main_~j~0 3)} #71#return; {2657#(<= main_~j~0 3)} is VALID [2020-07-18 06:38:00,224 INFO L263 TraceCheckUtils]: 62: Hoare triple {2657#(<= main_~j~0 3)} call __VERIFIER_assert((if ~nlen~0 - 1 - ~i~0 < ~nlen~0 then 1 else 0)); {2623#true} is VALID [2020-07-18 06:38:00,224 INFO L280 TraceCheckUtils]: 63: Hoare triple {2623#true} ~cond := #in~cond; {2623#true} is VALID [2020-07-18 06:38:00,225 INFO L280 TraceCheckUtils]: 64: Hoare triple {2623#true} assume !(0 == ~cond); {2623#true} is VALID [2020-07-18 06:38:00,225 INFO L280 TraceCheckUtils]: 65: Hoare triple {2623#true} assume true; {2623#true} is VALID [2020-07-18 06:38:00,225 INFO L275 TraceCheckUtils]: 66: Hoare quadruple {2623#true} {2657#(<= main_~j~0 3)} #73#return; {2657#(<= main_~j~0 3)} is VALID [2020-07-18 06:38:00,226 INFO L280 TraceCheckUtils]: 67: Hoare triple {2657#(<= main_~j~0 3)} #t~post2 := ~j~0; {2666#(<= |main_#t~post2| 3)} is VALID [2020-07-18 06:38:00,227 INFO L280 TraceCheckUtils]: 68: Hoare triple {2666#(<= |main_#t~post2| 3)} ~j~0 := 1 + #t~post2; {2667#(<= main_~j~0 4)} is VALID [2020-07-18 06:38:00,227 INFO L280 TraceCheckUtils]: 69: Hoare triple {2667#(<= main_~j~0 4)} havoc #t~post2; {2667#(<= main_~j~0 4)} is VALID [2020-07-18 06:38:00,229 INFO L280 TraceCheckUtils]: 70: Hoare triple {2667#(<= main_~j~0 4)} assume !(~j~0 < 8); {2624#false} is VALID [2020-07-18 06:38:00,230 INFO L280 TraceCheckUtils]: 71: Hoare triple {2624#false} #t~post1 := ~i~0; {2624#false} is VALID [2020-07-18 06:38:00,230 INFO L280 TraceCheckUtils]: 72: Hoare triple {2624#false} ~i~0 := 1 + #t~post1; {2624#false} is VALID [2020-07-18 06:38:00,230 INFO L280 TraceCheckUtils]: 73: Hoare triple {2624#false} havoc #t~post1; {2624#false} is VALID [2020-07-18 06:38:00,230 INFO L280 TraceCheckUtils]: 74: Hoare triple {2624#false} assume !!(~i~0 < ~nlen~0); {2624#false} is VALID [2020-07-18 06:38:00,230 INFO L280 TraceCheckUtils]: 75: Hoare triple {2624#false} ~j~0 := 0; {2624#false} is VALID [2020-07-18 06:38:00,231 INFO L280 TraceCheckUtils]: 76: Hoare triple {2624#false} assume !!(~j~0 < 8); {2624#false} is VALID [2020-07-18 06:38:00,231 INFO L263 TraceCheckUtils]: 77: Hoare triple {2624#false} call __VERIFIER_assert((if 0 <= ~nlen~0 - 1 - ~i~0 then 1 else 0)); {2623#true} is VALID [2020-07-18 06:38:00,231 INFO L280 TraceCheckUtils]: 78: Hoare triple {2623#true} ~cond := #in~cond; {2623#true} is VALID [2020-07-18 06:38:00,233 INFO L280 TraceCheckUtils]: 79: Hoare triple {2623#true} assume !(0 == ~cond); {2623#true} is VALID [2020-07-18 06:38:00,234 INFO L280 TraceCheckUtils]: 80: Hoare triple {2623#true} assume true; {2623#true} is VALID [2020-07-18 06:38:00,234 INFO L275 TraceCheckUtils]: 81: Hoare quadruple {2623#true} {2624#false} #71#return; {2624#false} is VALID [2020-07-18 06:38:00,234 INFO L263 TraceCheckUtils]: 82: Hoare triple {2624#false} call __VERIFIER_assert((if ~nlen~0 - 1 - ~i~0 < ~nlen~0 then 1 else 0)); {2624#false} is VALID [2020-07-18 06:38:00,234 INFO L280 TraceCheckUtils]: 83: Hoare triple {2624#false} ~cond := #in~cond; {2624#false} is VALID [2020-07-18 06:38:00,234 INFO L280 TraceCheckUtils]: 84: Hoare triple {2624#false} assume 0 == ~cond; {2624#false} is VALID [2020-07-18 06:38:00,235 INFO L280 TraceCheckUtils]: 85: Hoare triple {2624#false} assume !false; {2624#false} is VALID [2020-07-18 06:38:00,256 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 33 proven. 40 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-07-18 06:38:00,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [238616680] [2020-07-18 06:38:00,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-18 06:38:00,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-07-18 06:38:00,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060313165] [2020-07-18 06:38:00,258 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 86 [2020-07-18 06:38:00,259 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-18 06:38:00,259 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 11 states. [2020-07-18 06:38:00,332 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 62 edges. 62 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 06:38:00,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-18 06:38:00,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-18 06:38:00,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-18 06:38:00,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-07-18 06:38:00,333 INFO L87 Difference]: Start difference. First operand 83 states and 98 transitions. Second operand 11 states. [2020-07-18 06:38:00,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 06:38:00,876 INFO L93 Difference]: Finished difference Result 143 states and 175 transitions. [2020-07-18 06:38:00,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-07-18 06:38:00,877 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 86 [2020-07-18 06:38:00,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-18 06:38:00,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-07-18 06:38:00,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 90 transitions. [2020-07-18 06:38:00,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-07-18 06:38:00,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 90 transitions. [2020-07-18 06:38:00,883 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 15 states and 90 transitions. [2020-07-18 06:38:00,978 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 90 edges. 90 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 06:38:00,982 INFO L225 Difference]: With dead ends: 143 [2020-07-18 06:38:00,982 INFO L226 Difference]: Without dead ends: 103 [2020-07-18 06:38:00,984 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=123, Invalid=219, Unknown=0, NotChecked=0, Total=342 [2020-07-18 06:38:00,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-07-18 06:38:01,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 95. [2020-07-18 06:38:01,161 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-18 06:38:01,161 INFO L82 GeneralOperation]: Start isEquivalent. First operand 103 states. Second operand 95 states. [2020-07-18 06:38:01,161 INFO L74 IsIncluded]: Start isIncluded. First operand 103 states. Second operand 95 states. [2020-07-18 06:38:01,162 INFO L87 Difference]: Start difference. First operand 103 states. Second operand 95 states. [2020-07-18 06:38:01,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 06:38:01,167 INFO L93 Difference]: Finished difference Result 103 states and 126 transitions. [2020-07-18 06:38:01,167 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 126 transitions. [2020-07-18 06:38:01,168 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 06:38:01,168 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 06:38:01,168 INFO L74 IsIncluded]: Start isIncluded. First operand 95 states. Second operand 103 states. [2020-07-18 06:38:01,169 INFO L87 Difference]: Start difference. First operand 95 states. Second operand 103 states. [2020-07-18 06:38:01,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 06:38:01,174 INFO L93 Difference]: Finished difference Result 103 states and 126 transitions. [2020-07-18 06:38:01,174 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 126 transitions. [2020-07-18 06:38:01,175 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 06:38:01,175 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 06:38:01,175 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-18 06:38:01,175 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-18 06:38:01,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-07-18 06:38:01,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 114 transitions. [2020-07-18 06:38:01,180 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 114 transitions. Word has length 86 [2020-07-18 06:38:01,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-18 06:38:01,181 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 114 transitions. [2020-07-18 06:38:01,181 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-18 06:38:01,181 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 95 states and 114 transitions. [2020-07-18 06:38:01,316 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 114 edges. 114 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 06:38:01,316 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 114 transitions. [2020-07-18 06:38:01,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-07-18 06:38:01,317 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 06:38:01,318 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 11, 6, 6, 6, 6, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-18 06:38:01,318 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-18 06:38:01,318 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 06:38:01,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 06:38:01,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1582933560, now seen corresponding path program 5 times [2020-07-18 06:38:01,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 06:38:01,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [849603586] [2020-07-18 06:38:01,319 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 06:38:01,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:38:01,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:38:01,478 INFO L280 TraceCheckUtils]: 0: Hoare triple {3372#true} assume true; {3372#true} is VALID [2020-07-18 06:38:01,478 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {3372#true} {3372#true} #67#return; {3372#true} is VALID [2020-07-18 06:38:01,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:38:01,488 INFO L280 TraceCheckUtils]: 0: Hoare triple {3372#true} ~cond := #in~cond; {3372#true} is VALID [2020-07-18 06:38:01,488 INFO L280 TraceCheckUtils]: 1: Hoare triple {3372#true} assume !(0 == ~cond); {3372#true} is VALID [2020-07-18 06:38:01,489 INFO L280 TraceCheckUtils]: 2: Hoare triple {3372#true} assume true; {3372#true} is VALID [2020-07-18 06:38:01,489 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {3372#true} {3376#(<= main_~j~0 0)} #71#return; {3376#(<= main_~j~0 0)} is VALID [2020-07-18 06:38:01,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:38:01,494 INFO L280 TraceCheckUtils]: 0: Hoare triple {3372#true} ~cond := #in~cond; {3372#true} is VALID [2020-07-18 06:38:01,495 INFO L280 TraceCheckUtils]: 1: Hoare triple {3372#true} assume !(0 == ~cond); {3372#true} is VALID [2020-07-18 06:38:01,495 INFO L280 TraceCheckUtils]: 2: Hoare triple {3372#true} assume true; {3372#true} is VALID [2020-07-18 06:38:01,495 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {3372#true} {3376#(<= main_~j~0 0)} #73#return; {3376#(<= main_~j~0 0)} is VALID [2020-07-18 06:38:01,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:38:01,500 INFO L280 TraceCheckUtils]: 0: Hoare triple {3372#true} ~cond := #in~cond; {3372#true} is VALID [2020-07-18 06:38:01,500 INFO L280 TraceCheckUtils]: 1: Hoare triple {3372#true} assume !(0 == ~cond); {3372#true} is VALID [2020-07-18 06:38:01,500 INFO L280 TraceCheckUtils]: 2: Hoare triple {3372#true} assume true; {3372#true} is VALID [2020-07-18 06:38:01,501 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {3372#true} {3386#(<= main_~j~0 1)} #71#return; {3386#(<= main_~j~0 1)} is VALID [2020-07-18 06:38:01,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:38:01,507 INFO L280 TraceCheckUtils]: 0: Hoare triple {3372#true} ~cond := #in~cond; {3372#true} is VALID [2020-07-18 06:38:01,507 INFO L280 TraceCheckUtils]: 1: Hoare triple {3372#true} assume !(0 == ~cond); {3372#true} is VALID [2020-07-18 06:38:01,507 INFO L280 TraceCheckUtils]: 2: Hoare triple {3372#true} assume true; {3372#true} is VALID [2020-07-18 06:38:01,508 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {3372#true} {3386#(<= main_~j~0 1)} #73#return; {3386#(<= main_~j~0 1)} is VALID [2020-07-18 06:38:01,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:38:01,512 INFO L280 TraceCheckUtils]: 0: Hoare triple {3372#true} ~cond := #in~cond; {3372#true} is VALID [2020-07-18 06:38:01,512 INFO L280 TraceCheckUtils]: 1: Hoare triple {3372#true} assume !(0 == ~cond); {3372#true} is VALID [2020-07-18 06:38:01,513 INFO L280 TraceCheckUtils]: 2: Hoare triple {3372#true} assume true; {3372#true} is VALID [2020-07-18 06:38:01,515 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {3372#true} {3396#(<= main_~j~0 2)} #71#return; {3396#(<= main_~j~0 2)} is VALID [2020-07-18 06:38:01,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:38:01,534 INFO L280 TraceCheckUtils]: 0: Hoare triple {3372#true} ~cond := #in~cond; {3372#true} is VALID [2020-07-18 06:38:01,535 INFO L280 TraceCheckUtils]: 1: Hoare triple {3372#true} assume !(0 == ~cond); {3372#true} is VALID [2020-07-18 06:38:01,535 INFO L280 TraceCheckUtils]: 2: Hoare triple {3372#true} assume true; {3372#true} is VALID [2020-07-18 06:38:01,536 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {3372#true} {3396#(<= main_~j~0 2)} #73#return; {3396#(<= main_~j~0 2)} is VALID [2020-07-18 06:38:01,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:38:01,542 INFO L280 TraceCheckUtils]: 0: Hoare triple {3372#true} ~cond := #in~cond; {3372#true} is VALID [2020-07-18 06:38:01,542 INFO L280 TraceCheckUtils]: 1: Hoare triple {3372#true} assume !(0 == ~cond); {3372#true} is VALID [2020-07-18 06:38:01,542 INFO L280 TraceCheckUtils]: 2: Hoare triple {3372#true} assume true; {3372#true} is VALID [2020-07-18 06:38:01,549 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {3372#true} {3406#(<= main_~j~0 3)} #71#return; {3406#(<= main_~j~0 3)} is VALID [2020-07-18 06:38:01,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:38:01,555 INFO L280 TraceCheckUtils]: 0: Hoare triple {3372#true} ~cond := #in~cond; {3372#true} is VALID [2020-07-18 06:38:01,555 INFO L280 TraceCheckUtils]: 1: Hoare triple {3372#true} assume !(0 == ~cond); {3372#true} is VALID [2020-07-18 06:38:01,555 INFO L280 TraceCheckUtils]: 2: Hoare triple {3372#true} assume true; {3372#true} is VALID [2020-07-18 06:38:01,556 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {3372#true} {3406#(<= main_~j~0 3)} #73#return; {3406#(<= main_~j~0 3)} is VALID [2020-07-18 06:38:01,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:38:01,564 INFO L280 TraceCheckUtils]: 0: Hoare triple {3372#true} ~cond := #in~cond; {3372#true} is VALID [2020-07-18 06:38:01,564 INFO L280 TraceCheckUtils]: 1: Hoare triple {3372#true} assume !(0 == ~cond); {3372#true} is VALID [2020-07-18 06:38:01,564 INFO L280 TraceCheckUtils]: 2: Hoare triple {3372#true} assume true; {3372#true} is VALID [2020-07-18 06:38:01,565 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {3372#true} {3416#(<= main_~j~0 4)} #71#return; {3416#(<= main_~j~0 4)} is VALID [2020-07-18 06:38:01,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:38:01,574 INFO L280 TraceCheckUtils]: 0: Hoare triple {3372#true} ~cond := #in~cond; {3372#true} is VALID [2020-07-18 06:38:01,574 INFO L280 TraceCheckUtils]: 1: Hoare triple {3372#true} assume !(0 == ~cond); {3372#true} is VALID [2020-07-18 06:38:01,574 INFO L280 TraceCheckUtils]: 2: Hoare triple {3372#true} assume true; {3372#true} is VALID [2020-07-18 06:38:01,575 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {3372#true} {3416#(<= main_~j~0 4)} #73#return; {3416#(<= main_~j~0 4)} is VALID [2020-07-18 06:38:01,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:38:01,579 INFO L280 TraceCheckUtils]: 0: Hoare triple {3372#true} ~cond := #in~cond; {3372#true} is VALID [2020-07-18 06:38:01,580 INFO L280 TraceCheckUtils]: 1: Hoare triple {3372#true} assume !(0 == ~cond); {3372#true} is VALID [2020-07-18 06:38:01,580 INFO L280 TraceCheckUtils]: 2: Hoare triple {3372#true} assume true; {3372#true} is VALID [2020-07-18 06:38:01,580 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {3372#true} {3373#false} #71#return; {3373#false} is VALID [2020-07-18 06:38:01,580 INFO L263 TraceCheckUtils]: 0: Hoare triple {3372#true} call ULTIMATE.init(); {3372#true} is VALID [2020-07-18 06:38:01,581 INFO L280 TraceCheckUtils]: 1: Hoare triple {3372#true} assume true; {3372#true} is VALID [2020-07-18 06:38:01,581 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {3372#true} {3372#true} #67#return; {3372#true} is VALID [2020-07-18 06:38:01,581 INFO L263 TraceCheckUtils]: 3: Hoare triple {3372#true} call #t~ret3 := main(); {3372#true} is VALID [2020-07-18 06:38:01,581 INFO L280 TraceCheckUtils]: 4: Hoare triple {3372#true} havoc ~offset~0; {3372#true} is VALID [2020-07-18 06:38:01,581 INFO L280 TraceCheckUtils]: 5: Hoare triple {3372#true} havoc ~length~0; {3372#true} is VALID [2020-07-18 06:38:01,582 INFO L280 TraceCheckUtils]: 6: Hoare triple {3372#true} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; {3372#true} is VALID [2020-07-18 06:38:01,582 INFO L280 TraceCheckUtils]: 7: Hoare triple {3372#true} ~nlen~0 := #t~nondet0; {3372#true} is VALID [2020-07-18 06:38:01,582 INFO L280 TraceCheckUtils]: 8: Hoare triple {3372#true} havoc #t~nondet0; {3372#true} is VALID [2020-07-18 06:38:01,582 INFO L280 TraceCheckUtils]: 9: Hoare triple {3372#true} havoc ~i~0; {3372#true} is VALID [2020-07-18 06:38:01,582 INFO L280 TraceCheckUtils]: 10: Hoare triple {3372#true} havoc ~j~0; {3372#true} is VALID [2020-07-18 06:38:01,583 INFO L280 TraceCheckUtils]: 11: Hoare triple {3372#true} ~i~0 := 0; {3372#true} is VALID [2020-07-18 06:38:01,583 INFO L280 TraceCheckUtils]: 12: Hoare triple {3372#true} assume !!(~i~0 < ~nlen~0); {3372#true} is VALID [2020-07-18 06:38:01,584 INFO L280 TraceCheckUtils]: 13: Hoare triple {3372#true} ~j~0 := 0; {3376#(<= main_~j~0 0)} is VALID [2020-07-18 06:38:01,588 INFO L280 TraceCheckUtils]: 14: Hoare triple {3376#(<= main_~j~0 0)} assume !!(~j~0 < 8); {3376#(<= main_~j~0 0)} is VALID [2020-07-18 06:38:01,588 INFO L263 TraceCheckUtils]: 15: Hoare triple {3376#(<= main_~j~0 0)} call __VERIFIER_assert((if 0 <= ~nlen~0 - 1 - ~i~0 then 1 else 0)); {3372#true} is VALID [2020-07-18 06:38:01,588 INFO L280 TraceCheckUtils]: 16: Hoare triple {3372#true} ~cond := #in~cond; {3372#true} is VALID [2020-07-18 06:38:01,588 INFO L280 TraceCheckUtils]: 17: Hoare triple {3372#true} assume !(0 == ~cond); {3372#true} is VALID [2020-07-18 06:38:01,589 INFO L280 TraceCheckUtils]: 18: Hoare triple {3372#true} assume true; {3372#true} is VALID [2020-07-18 06:38:01,595 INFO L275 TraceCheckUtils]: 19: Hoare quadruple {3372#true} {3376#(<= main_~j~0 0)} #71#return; {3376#(<= main_~j~0 0)} is VALID [2020-07-18 06:38:01,595 INFO L263 TraceCheckUtils]: 20: Hoare triple {3376#(<= main_~j~0 0)} call __VERIFIER_assert((if ~nlen~0 - 1 - ~i~0 < ~nlen~0 then 1 else 0)); {3372#true} is VALID [2020-07-18 06:38:01,595 INFO L280 TraceCheckUtils]: 21: Hoare triple {3372#true} ~cond := #in~cond; {3372#true} is VALID [2020-07-18 06:38:01,595 INFO L280 TraceCheckUtils]: 22: Hoare triple {3372#true} assume !(0 == ~cond); {3372#true} is VALID [2020-07-18 06:38:01,596 INFO L280 TraceCheckUtils]: 23: Hoare triple {3372#true} assume true; {3372#true} is VALID [2020-07-18 06:38:01,596 INFO L275 TraceCheckUtils]: 24: Hoare quadruple {3372#true} {3376#(<= main_~j~0 0)} #73#return; {3376#(<= main_~j~0 0)} is VALID [2020-07-18 06:38:01,597 INFO L280 TraceCheckUtils]: 25: Hoare triple {3376#(<= main_~j~0 0)} #t~post2 := ~j~0; {3385#(<= |main_#t~post2| 0)} is VALID [2020-07-18 06:38:01,597 INFO L280 TraceCheckUtils]: 26: Hoare triple {3385#(<= |main_#t~post2| 0)} ~j~0 := 1 + #t~post2; {3386#(<= main_~j~0 1)} is VALID [2020-07-18 06:38:01,598 INFO L280 TraceCheckUtils]: 27: Hoare triple {3386#(<= main_~j~0 1)} havoc #t~post2; {3386#(<= main_~j~0 1)} is VALID [2020-07-18 06:38:01,598 INFO L280 TraceCheckUtils]: 28: Hoare triple {3386#(<= main_~j~0 1)} assume !!(~j~0 < 8); {3386#(<= main_~j~0 1)} is VALID [2020-07-18 06:38:01,599 INFO L263 TraceCheckUtils]: 29: Hoare triple {3386#(<= main_~j~0 1)} call __VERIFIER_assert((if 0 <= ~nlen~0 - 1 - ~i~0 then 1 else 0)); {3372#true} is VALID [2020-07-18 06:38:01,599 INFO L280 TraceCheckUtils]: 30: Hoare triple {3372#true} ~cond := #in~cond; {3372#true} is VALID [2020-07-18 06:38:01,599 INFO L280 TraceCheckUtils]: 31: Hoare triple {3372#true} assume !(0 == ~cond); {3372#true} is VALID [2020-07-18 06:38:01,599 INFO L280 TraceCheckUtils]: 32: Hoare triple {3372#true} assume true; {3372#true} is VALID [2020-07-18 06:38:01,600 INFO L275 TraceCheckUtils]: 33: Hoare quadruple {3372#true} {3386#(<= main_~j~0 1)} #71#return; {3386#(<= main_~j~0 1)} is VALID [2020-07-18 06:38:01,600 INFO L263 TraceCheckUtils]: 34: Hoare triple {3386#(<= main_~j~0 1)} call __VERIFIER_assert((if ~nlen~0 - 1 - ~i~0 < ~nlen~0 then 1 else 0)); {3372#true} is VALID [2020-07-18 06:38:01,600 INFO L280 TraceCheckUtils]: 35: Hoare triple {3372#true} ~cond := #in~cond; {3372#true} is VALID [2020-07-18 06:38:01,600 INFO L280 TraceCheckUtils]: 36: Hoare triple {3372#true} assume !(0 == ~cond); {3372#true} is VALID [2020-07-18 06:38:01,601 INFO L280 TraceCheckUtils]: 37: Hoare triple {3372#true} assume true; {3372#true} is VALID [2020-07-18 06:38:01,601 INFO L275 TraceCheckUtils]: 38: Hoare quadruple {3372#true} {3386#(<= main_~j~0 1)} #73#return; {3386#(<= main_~j~0 1)} is VALID [2020-07-18 06:38:01,602 INFO L280 TraceCheckUtils]: 39: Hoare triple {3386#(<= main_~j~0 1)} #t~post2 := ~j~0; {3395#(<= |main_#t~post2| 1)} is VALID [2020-07-18 06:38:01,603 INFO L280 TraceCheckUtils]: 40: Hoare triple {3395#(<= |main_#t~post2| 1)} ~j~0 := 1 + #t~post2; {3396#(<= main_~j~0 2)} is VALID [2020-07-18 06:38:01,603 INFO L280 TraceCheckUtils]: 41: Hoare triple {3396#(<= main_~j~0 2)} havoc #t~post2; {3396#(<= main_~j~0 2)} is VALID [2020-07-18 06:38:01,603 INFO L280 TraceCheckUtils]: 42: Hoare triple {3396#(<= main_~j~0 2)} assume !!(~j~0 < 8); {3396#(<= main_~j~0 2)} is VALID [2020-07-18 06:38:01,604 INFO L263 TraceCheckUtils]: 43: Hoare triple {3396#(<= main_~j~0 2)} call __VERIFIER_assert((if 0 <= ~nlen~0 - 1 - ~i~0 then 1 else 0)); {3372#true} is VALID [2020-07-18 06:38:01,604 INFO L280 TraceCheckUtils]: 44: Hoare triple {3372#true} ~cond := #in~cond; {3372#true} is VALID [2020-07-18 06:38:01,604 INFO L280 TraceCheckUtils]: 45: Hoare triple {3372#true} assume !(0 == ~cond); {3372#true} is VALID [2020-07-18 06:38:01,604 INFO L280 TraceCheckUtils]: 46: Hoare triple {3372#true} assume true; {3372#true} is VALID [2020-07-18 06:38:01,605 INFO L275 TraceCheckUtils]: 47: Hoare quadruple {3372#true} {3396#(<= main_~j~0 2)} #71#return; {3396#(<= main_~j~0 2)} is VALID [2020-07-18 06:38:01,606 INFO L263 TraceCheckUtils]: 48: Hoare triple {3396#(<= main_~j~0 2)} call __VERIFIER_assert((if ~nlen~0 - 1 - ~i~0 < ~nlen~0 then 1 else 0)); {3372#true} is VALID [2020-07-18 06:38:01,606 INFO L280 TraceCheckUtils]: 49: Hoare triple {3372#true} ~cond := #in~cond; {3372#true} is VALID [2020-07-18 06:38:01,606 INFO L280 TraceCheckUtils]: 50: Hoare triple {3372#true} assume !(0 == ~cond); {3372#true} is VALID [2020-07-18 06:38:01,606 INFO L280 TraceCheckUtils]: 51: Hoare triple {3372#true} assume true; {3372#true} is VALID [2020-07-18 06:38:01,607 INFO L275 TraceCheckUtils]: 52: Hoare quadruple {3372#true} {3396#(<= main_~j~0 2)} #73#return; {3396#(<= main_~j~0 2)} is VALID [2020-07-18 06:38:01,607 INFO L280 TraceCheckUtils]: 53: Hoare triple {3396#(<= main_~j~0 2)} #t~post2 := ~j~0; {3405#(<= |main_#t~post2| 2)} is VALID [2020-07-18 06:38:01,608 INFO L280 TraceCheckUtils]: 54: Hoare triple {3405#(<= |main_#t~post2| 2)} ~j~0 := 1 + #t~post2; {3406#(<= main_~j~0 3)} is VALID [2020-07-18 06:38:01,608 INFO L280 TraceCheckUtils]: 55: Hoare triple {3406#(<= main_~j~0 3)} havoc #t~post2; {3406#(<= main_~j~0 3)} is VALID [2020-07-18 06:38:01,609 INFO L280 TraceCheckUtils]: 56: Hoare triple {3406#(<= main_~j~0 3)} assume !!(~j~0 < 8); {3406#(<= main_~j~0 3)} is VALID [2020-07-18 06:38:01,609 INFO L263 TraceCheckUtils]: 57: Hoare triple {3406#(<= main_~j~0 3)} call __VERIFIER_assert((if 0 <= ~nlen~0 - 1 - ~i~0 then 1 else 0)); {3372#true} is VALID [2020-07-18 06:38:01,609 INFO L280 TraceCheckUtils]: 58: Hoare triple {3372#true} ~cond := #in~cond; {3372#true} is VALID [2020-07-18 06:38:01,609 INFO L280 TraceCheckUtils]: 59: Hoare triple {3372#true} assume !(0 == ~cond); {3372#true} is VALID [2020-07-18 06:38:01,609 INFO L280 TraceCheckUtils]: 60: Hoare triple {3372#true} assume true; {3372#true} is VALID [2020-07-18 06:38:01,610 INFO L275 TraceCheckUtils]: 61: Hoare quadruple {3372#true} {3406#(<= main_~j~0 3)} #71#return; {3406#(<= main_~j~0 3)} is VALID [2020-07-18 06:38:01,610 INFO L263 TraceCheckUtils]: 62: Hoare triple {3406#(<= main_~j~0 3)} call __VERIFIER_assert((if ~nlen~0 - 1 - ~i~0 < ~nlen~0 then 1 else 0)); {3372#true} is VALID [2020-07-18 06:38:01,610 INFO L280 TraceCheckUtils]: 63: Hoare triple {3372#true} ~cond := #in~cond; {3372#true} is VALID [2020-07-18 06:38:01,610 INFO L280 TraceCheckUtils]: 64: Hoare triple {3372#true} assume !(0 == ~cond); {3372#true} is VALID [2020-07-18 06:38:01,610 INFO L280 TraceCheckUtils]: 65: Hoare triple {3372#true} assume true; {3372#true} is VALID [2020-07-18 06:38:01,611 INFO L275 TraceCheckUtils]: 66: Hoare quadruple {3372#true} {3406#(<= main_~j~0 3)} #73#return; {3406#(<= main_~j~0 3)} is VALID [2020-07-18 06:38:01,611 INFO L280 TraceCheckUtils]: 67: Hoare triple {3406#(<= main_~j~0 3)} #t~post2 := ~j~0; {3415#(<= |main_#t~post2| 3)} is VALID [2020-07-18 06:38:01,612 INFO L280 TraceCheckUtils]: 68: Hoare triple {3415#(<= |main_#t~post2| 3)} ~j~0 := 1 + #t~post2; {3416#(<= main_~j~0 4)} is VALID [2020-07-18 06:38:01,612 INFO L280 TraceCheckUtils]: 69: Hoare triple {3416#(<= main_~j~0 4)} havoc #t~post2; {3416#(<= main_~j~0 4)} is VALID [2020-07-18 06:38:01,612 INFO L280 TraceCheckUtils]: 70: Hoare triple {3416#(<= main_~j~0 4)} assume !!(~j~0 < 8); {3416#(<= main_~j~0 4)} is VALID [2020-07-18 06:38:01,613 INFO L263 TraceCheckUtils]: 71: Hoare triple {3416#(<= main_~j~0 4)} call __VERIFIER_assert((if 0 <= ~nlen~0 - 1 - ~i~0 then 1 else 0)); {3372#true} is VALID [2020-07-18 06:38:01,613 INFO L280 TraceCheckUtils]: 72: Hoare triple {3372#true} ~cond := #in~cond; {3372#true} is VALID [2020-07-18 06:38:01,613 INFO L280 TraceCheckUtils]: 73: Hoare triple {3372#true} assume !(0 == ~cond); {3372#true} is VALID [2020-07-18 06:38:01,613 INFO L280 TraceCheckUtils]: 74: Hoare triple {3372#true} assume true; {3372#true} is VALID [2020-07-18 06:38:01,614 INFO L275 TraceCheckUtils]: 75: Hoare quadruple {3372#true} {3416#(<= main_~j~0 4)} #71#return; {3416#(<= main_~j~0 4)} is VALID [2020-07-18 06:38:01,614 INFO L263 TraceCheckUtils]: 76: Hoare triple {3416#(<= main_~j~0 4)} call __VERIFIER_assert((if ~nlen~0 - 1 - ~i~0 < ~nlen~0 then 1 else 0)); {3372#true} is VALID [2020-07-18 06:38:01,615 INFO L280 TraceCheckUtils]: 77: Hoare triple {3372#true} ~cond := #in~cond; {3372#true} is VALID [2020-07-18 06:38:01,615 INFO L280 TraceCheckUtils]: 78: Hoare triple {3372#true} assume !(0 == ~cond); {3372#true} is VALID [2020-07-18 06:38:01,615 INFO L280 TraceCheckUtils]: 79: Hoare triple {3372#true} assume true; {3372#true} is VALID [2020-07-18 06:38:01,615 INFO L275 TraceCheckUtils]: 80: Hoare quadruple {3372#true} {3416#(<= main_~j~0 4)} #73#return; {3416#(<= main_~j~0 4)} is VALID [2020-07-18 06:38:01,616 INFO L280 TraceCheckUtils]: 81: Hoare triple {3416#(<= main_~j~0 4)} #t~post2 := ~j~0; {3425#(<= |main_#t~post2| 4)} is VALID [2020-07-18 06:38:01,616 INFO L280 TraceCheckUtils]: 82: Hoare triple {3425#(<= |main_#t~post2| 4)} ~j~0 := 1 + #t~post2; {3426#(<= main_~j~0 5)} is VALID [2020-07-18 06:38:01,617 INFO L280 TraceCheckUtils]: 83: Hoare triple {3426#(<= main_~j~0 5)} havoc #t~post2; {3426#(<= main_~j~0 5)} is VALID [2020-07-18 06:38:01,617 INFO L280 TraceCheckUtils]: 84: Hoare triple {3426#(<= main_~j~0 5)} assume !(~j~0 < 8); {3373#false} is VALID [2020-07-18 06:38:01,618 INFO L280 TraceCheckUtils]: 85: Hoare triple {3373#false} #t~post1 := ~i~0; {3373#false} is VALID [2020-07-18 06:38:01,618 INFO L280 TraceCheckUtils]: 86: Hoare triple {3373#false} ~i~0 := 1 + #t~post1; {3373#false} is VALID [2020-07-18 06:38:01,618 INFO L280 TraceCheckUtils]: 87: Hoare triple {3373#false} havoc #t~post1; {3373#false} is VALID [2020-07-18 06:38:01,618 INFO L280 TraceCheckUtils]: 88: Hoare triple {3373#false} assume !!(~i~0 < ~nlen~0); {3373#false} is VALID [2020-07-18 06:38:01,618 INFO L280 TraceCheckUtils]: 89: Hoare triple {3373#false} ~j~0 := 0; {3373#false} is VALID [2020-07-18 06:38:01,619 INFO L280 TraceCheckUtils]: 90: Hoare triple {3373#false} assume !!(~j~0 < 8); {3373#false} is VALID [2020-07-18 06:38:01,619 INFO L263 TraceCheckUtils]: 91: Hoare triple {3373#false} call __VERIFIER_assert((if 0 <= ~nlen~0 - 1 - ~i~0 then 1 else 0)); {3372#true} is VALID [2020-07-18 06:38:01,619 INFO L280 TraceCheckUtils]: 92: Hoare triple {3372#true} ~cond := #in~cond; {3372#true} is VALID [2020-07-18 06:38:01,619 INFO L280 TraceCheckUtils]: 93: Hoare triple {3372#true} assume !(0 == ~cond); {3372#true} is VALID [2020-07-18 06:38:01,619 INFO L280 TraceCheckUtils]: 94: Hoare triple {3372#true} assume true; {3372#true} is VALID [2020-07-18 06:38:01,619 INFO L275 TraceCheckUtils]: 95: Hoare quadruple {3372#true} {3373#false} #71#return; {3373#false} is VALID [2020-07-18 06:38:01,619 INFO L263 TraceCheckUtils]: 96: Hoare triple {3373#false} call __VERIFIER_assert((if ~nlen~0 - 1 - ~i~0 < ~nlen~0 then 1 else 0)); {3373#false} is VALID [2020-07-18 06:38:01,620 INFO L280 TraceCheckUtils]: 97: Hoare triple {3373#false} ~cond := #in~cond; {3373#false} is VALID [2020-07-18 06:38:01,620 INFO L280 TraceCheckUtils]: 98: Hoare triple {3373#false} assume 0 == ~cond; {3373#false} is VALID [2020-07-18 06:38:01,620 INFO L280 TraceCheckUtils]: 99: Hoare triple {3373#false} assume !false; {3373#false} is VALID [2020-07-18 06:38:01,625 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 40 proven. 65 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-07-18 06:38:01,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [849603586] [2020-07-18 06:38:01,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-18 06:38:01,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-07-18 06:38:01,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037270974] [2020-07-18 06:38:01,626 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 100 [2020-07-18 06:38:01,626 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-18 06:38:01,627 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 13 states. [2020-07-18 06:38:01,699 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 70 edges. 70 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 06:38:01,699 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-07-18 06:38:01,699 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-18 06:38:01,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-07-18 06:38:01,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-07-18 06:38:01,700 INFO L87 Difference]: Start difference. First operand 95 states and 114 transitions. Second operand 13 states. [2020-07-18 06:38:02,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 06:38:02,339 INFO L93 Difference]: Finished difference Result 161 states and 199 transitions. [2020-07-18 06:38:02,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-07-18 06:38:02,339 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 100 [2020-07-18 06:38:02,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-18 06:38:02,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-07-18 06:38:02,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 98 transitions. [2020-07-18 06:38:02,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-07-18 06:38:02,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 98 transitions. [2020-07-18 06:38:02,345 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 18 states and 98 transitions. [2020-07-18 06:38:02,445 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 98 edges. 98 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 06:38:02,449 INFO L225 Difference]: With dead ends: 161 [2020-07-18 06:38:02,449 INFO L226 Difference]: Without dead ends: 115 [2020-07-18 06:38:02,450 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=178, Invalid=328, Unknown=0, NotChecked=0, Total=506 [2020-07-18 06:38:02,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-07-18 06:38:02,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 107. [2020-07-18 06:38:02,649 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-18 06:38:02,649 INFO L82 GeneralOperation]: Start isEquivalent. First operand 115 states. Second operand 107 states. [2020-07-18 06:38:02,649 INFO L74 IsIncluded]: Start isIncluded. First operand 115 states. Second operand 107 states. [2020-07-18 06:38:02,649 INFO L87 Difference]: Start difference. First operand 115 states. Second operand 107 states. [2020-07-18 06:38:02,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 06:38:02,655 INFO L93 Difference]: Finished difference Result 115 states and 142 transitions. [2020-07-18 06:38:02,656 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 142 transitions. [2020-07-18 06:38:02,656 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 06:38:02,657 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 06:38:02,657 INFO L74 IsIncluded]: Start isIncluded. First operand 107 states. Second operand 115 states. [2020-07-18 06:38:02,657 INFO L87 Difference]: Start difference. First operand 107 states. Second operand 115 states. [2020-07-18 06:38:02,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 06:38:02,663 INFO L93 Difference]: Finished difference Result 115 states and 142 transitions. [2020-07-18 06:38:02,663 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 142 transitions. [2020-07-18 06:38:02,664 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 06:38:02,664 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 06:38:02,664 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-18 06:38:02,664 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-18 06:38:02,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-07-18 06:38:02,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 130 transitions. [2020-07-18 06:38:02,669 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 130 transitions. Word has length 100 [2020-07-18 06:38:02,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-18 06:38:02,669 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 130 transitions. [2020-07-18 06:38:02,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-07-18 06:38:02,669 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 107 states and 130 transitions. [2020-07-18 06:38:02,836 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 130 edges. 130 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 06:38:02,836 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 130 transitions. [2020-07-18 06:38:02,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-07-18 06:38:02,838 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 06:38:02,838 INFO L422 BasicCegarLoop]: trace histogram [14, 13, 13, 7, 7, 7, 7, 6, 6, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-18 06:38:02,838 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-18 06:38:02,838 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 06:38:02,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 06:38:02,839 INFO L82 PathProgramCache]: Analyzing trace with hash 1615510489, now seen corresponding path program 6 times [2020-07-18 06:38:02,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 06:38:02,839 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1323727955] [2020-07-18 06:38:02,839 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 06:38:02,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:38:03,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:38:03,052 INFO L280 TraceCheckUtils]: 0: Hoare triple {4219#true} assume true; {4219#true} is VALID [2020-07-18 06:38:03,053 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {4219#true} {4219#true} #67#return; {4219#true} is VALID [2020-07-18 06:38:03,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:38:03,058 INFO L280 TraceCheckUtils]: 0: Hoare triple {4219#true} ~cond := #in~cond; {4219#true} is VALID [2020-07-18 06:38:03,059 INFO L280 TraceCheckUtils]: 1: Hoare triple {4219#true} assume !(0 == ~cond); {4219#true} is VALID [2020-07-18 06:38:03,059 INFO L280 TraceCheckUtils]: 2: Hoare triple {4219#true} assume true; {4219#true} is VALID [2020-07-18 06:38:03,060 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {4219#true} {4223#(<= main_~j~0 0)} #71#return; {4223#(<= main_~j~0 0)} is VALID [2020-07-18 06:38:03,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:38:03,063 INFO L280 TraceCheckUtils]: 0: Hoare triple {4219#true} ~cond := #in~cond; {4219#true} is VALID [2020-07-18 06:38:03,064 INFO L280 TraceCheckUtils]: 1: Hoare triple {4219#true} assume !(0 == ~cond); {4219#true} is VALID [2020-07-18 06:38:03,064 INFO L280 TraceCheckUtils]: 2: Hoare triple {4219#true} assume true; {4219#true} is VALID [2020-07-18 06:38:03,065 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {4219#true} {4223#(<= main_~j~0 0)} #73#return; {4223#(<= main_~j~0 0)} is VALID [2020-07-18 06:38:03,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:38:03,069 INFO L280 TraceCheckUtils]: 0: Hoare triple {4219#true} ~cond := #in~cond; {4219#true} is VALID [2020-07-18 06:38:03,069 INFO L280 TraceCheckUtils]: 1: Hoare triple {4219#true} assume !(0 == ~cond); {4219#true} is VALID [2020-07-18 06:38:03,069 INFO L280 TraceCheckUtils]: 2: Hoare triple {4219#true} assume true; {4219#true} is VALID [2020-07-18 06:38:03,070 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {4219#true} {4233#(<= main_~j~0 1)} #71#return; {4233#(<= main_~j~0 1)} is VALID [2020-07-18 06:38:03,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:38:03,084 INFO L280 TraceCheckUtils]: 0: Hoare triple {4219#true} ~cond := #in~cond; {4219#true} is VALID [2020-07-18 06:38:03,085 INFO L280 TraceCheckUtils]: 1: Hoare triple {4219#true} assume !(0 == ~cond); {4219#true} is VALID [2020-07-18 06:38:03,085 INFO L280 TraceCheckUtils]: 2: Hoare triple {4219#true} assume true; {4219#true} is VALID [2020-07-18 06:38:03,086 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {4219#true} {4233#(<= main_~j~0 1)} #73#return; {4233#(<= main_~j~0 1)} is VALID [2020-07-18 06:38:03,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:38:03,092 INFO L280 TraceCheckUtils]: 0: Hoare triple {4219#true} ~cond := #in~cond; {4219#true} is VALID [2020-07-18 06:38:03,092 INFO L280 TraceCheckUtils]: 1: Hoare triple {4219#true} assume !(0 == ~cond); {4219#true} is VALID [2020-07-18 06:38:03,092 INFO L280 TraceCheckUtils]: 2: Hoare triple {4219#true} assume true; {4219#true} is VALID [2020-07-18 06:38:03,093 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {4219#true} {4243#(<= main_~j~0 2)} #71#return; {4243#(<= main_~j~0 2)} is VALID [2020-07-18 06:38:03,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:38:03,098 INFO L280 TraceCheckUtils]: 0: Hoare triple {4219#true} ~cond := #in~cond; {4219#true} is VALID [2020-07-18 06:38:03,099 INFO L280 TraceCheckUtils]: 1: Hoare triple {4219#true} assume !(0 == ~cond); {4219#true} is VALID [2020-07-18 06:38:03,099 INFO L280 TraceCheckUtils]: 2: Hoare triple {4219#true} assume true; {4219#true} is VALID [2020-07-18 06:38:03,100 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {4219#true} {4243#(<= main_~j~0 2)} #73#return; {4243#(<= main_~j~0 2)} is VALID [2020-07-18 06:38:03,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:38:03,108 INFO L280 TraceCheckUtils]: 0: Hoare triple {4219#true} ~cond := #in~cond; {4219#true} is VALID [2020-07-18 06:38:03,108 INFO L280 TraceCheckUtils]: 1: Hoare triple {4219#true} assume !(0 == ~cond); {4219#true} is VALID [2020-07-18 06:38:03,108 INFO L280 TraceCheckUtils]: 2: Hoare triple {4219#true} assume true; {4219#true} is VALID [2020-07-18 06:38:03,109 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {4219#true} {4253#(<= main_~j~0 3)} #71#return; {4253#(<= main_~j~0 3)} is VALID [2020-07-18 06:38:03,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:38:03,114 INFO L280 TraceCheckUtils]: 0: Hoare triple {4219#true} ~cond := #in~cond; {4219#true} is VALID [2020-07-18 06:38:03,115 INFO L280 TraceCheckUtils]: 1: Hoare triple {4219#true} assume !(0 == ~cond); {4219#true} is VALID [2020-07-18 06:38:03,115 INFO L280 TraceCheckUtils]: 2: Hoare triple {4219#true} assume true; {4219#true} is VALID [2020-07-18 06:38:03,116 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {4219#true} {4253#(<= main_~j~0 3)} #73#return; {4253#(<= main_~j~0 3)} is VALID [2020-07-18 06:38:03,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:38:03,123 INFO L280 TraceCheckUtils]: 0: Hoare triple {4219#true} ~cond := #in~cond; {4219#true} is VALID [2020-07-18 06:38:03,123 INFO L280 TraceCheckUtils]: 1: Hoare triple {4219#true} assume !(0 == ~cond); {4219#true} is VALID [2020-07-18 06:38:03,124 INFO L280 TraceCheckUtils]: 2: Hoare triple {4219#true} assume true; {4219#true} is VALID [2020-07-18 06:38:03,125 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {4219#true} {4263#(<= main_~j~0 4)} #71#return; {4263#(<= main_~j~0 4)} is VALID [2020-07-18 06:38:03,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:38:03,129 INFO L280 TraceCheckUtils]: 0: Hoare triple {4219#true} ~cond := #in~cond; {4219#true} is VALID [2020-07-18 06:38:03,129 INFO L280 TraceCheckUtils]: 1: Hoare triple {4219#true} assume !(0 == ~cond); {4219#true} is VALID [2020-07-18 06:38:03,129 INFO L280 TraceCheckUtils]: 2: Hoare triple {4219#true} assume true; {4219#true} is VALID [2020-07-18 06:38:03,130 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {4219#true} {4263#(<= main_~j~0 4)} #73#return; {4263#(<= main_~j~0 4)} is VALID [2020-07-18 06:38:03,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:38:03,135 INFO L280 TraceCheckUtils]: 0: Hoare triple {4219#true} ~cond := #in~cond; {4219#true} is VALID [2020-07-18 06:38:03,135 INFO L280 TraceCheckUtils]: 1: Hoare triple {4219#true} assume !(0 == ~cond); {4219#true} is VALID [2020-07-18 06:38:03,136 INFO L280 TraceCheckUtils]: 2: Hoare triple {4219#true} assume true; {4219#true} is VALID [2020-07-18 06:38:03,147 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {4219#true} {4273#(<= main_~j~0 5)} #71#return; {4273#(<= main_~j~0 5)} is VALID [2020-07-18 06:38:03,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:38:03,152 INFO L280 TraceCheckUtils]: 0: Hoare triple {4219#true} ~cond := #in~cond; {4219#true} is VALID [2020-07-18 06:38:03,153 INFO L280 TraceCheckUtils]: 1: Hoare triple {4219#true} assume !(0 == ~cond); {4219#true} is VALID [2020-07-18 06:38:03,153 INFO L280 TraceCheckUtils]: 2: Hoare triple {4219#true} assume true; {4219#true} is VALID [2020-07-18 06:38:03,154 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {4219#true} {4273#(<= main_~j~0 5)} #73#return; {4273#(<= main_~j~0 5)} is VALID [2020-07-18 06:38:03,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:38:03,166 INFO L280 TraceCheckUtils]: 0: Hoare triple {4219#true} ~cond := #in~cond; {4219#true} is VALID [2020-07-18 06:38:03,167 INFO L280 TraceCheckUtils]: 1: Hoare triple {4219#true} assume !(0 == ~cond); {4219#true} is VALID [2020-07-18 06:38:03,167 INFO L280 TraceCheckUtils]: 2: Hoare triple {4219#true} assume true; {4219#true} is VALID [2020-07-18 06:38:03,167 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {4219#true} {4220#false} #71#return; {4220#false} is VALID [2020-07-18 06:38:03,168 INFO L263 TraceCheckUtils]: 0: Hoare triple {4219#true} call ULTIMATE.init(); {4219#true} is VALID [2020-07-18 06:38:03,168 INFO L280 TraceCheckUtils]: 1: Hoare triple {4219#true} assume true; {4219#true} is VALID [2020-07-18 06:38:03,168 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {4219#true} {4219#true} #67#return; {4219#true} is VALID [2020-07-18 06:38:03,168 INFO L263 TraceCheckUtils]: 3: Hoare triple {4219#true} call #t~ret3 := main(); {4219#true} is VALID [2020-07-18 06:38:03,168 INFO L280 TraceCheckUtils]: 4: Hoare triple {4219#true} havoc ~offset~0; {4219#true} is VALID [2020-07-18 06:38:03,169 INFO L280 TraceCheckUtils]: 5: Hoare triple {4219#true} havoc ~length~0; {4219#true} is VALID [2020-07-18 06:38:03,169 INFO L280 TraceCheckUtils]: 6: Hoare triple {4219#true} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; {4219#true} is VALID [2020-07-18 06:38:03,169 INFO L280 TraceCheckUtils]: 7: Hoare triple {4219#true} ~nlen~0 := #t~nondet0; {4219#true} is VALID [2020-07-18 06:38:03,169 INFO L280 TraceCheckUtils]: 8: Hoare triple {4219#true} havoc #t~nondet0; {4219#true} is VALID [2020-07-18 06:38:03,170 INFO L280 TraceCheckUtils]: 9: Hoare triple {4219#true} havoc ~i~0; {4219#true} is VALID [2020-07-18 06:38:03,170 INFO L280 TraceCheckUtils]: 10: Hoare triple {4219#true} havoc ~j~0; {4219#true} is VALID [2020-07-18 06:38:03,170 INFO L280 TraceCheckUtils]: 11: Hoare triple {4219#true} ~i~0 := 0; {4219#true} is VALID [2020-07-18 06:38:03,170 INFO L280 TraceCheckUtils]: 12: Hoare triple {4219#true} assume !!(~i~0 < ~nlen~0); {4219#true} is VALID [2020-07-18 06:38:03,172 INFO L280 TraceCheckUtils]: 13: Hoare triple {4219#true} ~j~0 := 0; {4223#(<= main_~j~0 0)} is VALID [2020-07-18 06:38:03,172 INFO L280 TraceCheckUtils]: 14: Hoare triple {4223#(<= main_~j~0 0)} assume !!(~j~0 < 8); {4223#(<= main_~j~0 0)} is VALID [2020-07-18 06:38:03,172 INFO L263 TraceCheckUtils]: 15: Hoare triple {4223#(<= main_~j~0 0)} call __VERIFIER_assert((if 0 <= ~nlen~0 - 1 - ~i~0 then 1 else 0)); {4219#true} is VALID [2020-07-18 06:38:03,173 INFO L280 TraceCheckUtils]: 16: Hoare triple {4219#true} ~cond := #in~cond; {4219#true} is VALID [2020-07-18 06:38:03,173 INFO L280 TraceCheckUtils]: 17: Hoare triple {4219#true} assume !(0 == ~cond); {4219#true} is VALID [2020-07-18 06:38:03,173 INFO L280 TraceCheckUtils]: 18: Hoare triple {4219#true} assume true; {4219#true} is VALID [2020-07-18 06:38:03,174 INFO L275 TraceCheckUtils]: 19: Hoare quadruple {4219#true} {4223#(<= main_~j~0 0)} #71#return; {4223#(<= main_~j~0 0)} is VALID [2020-07-18 06:38:03,174 INFO L263 TraceCheckUtils]: 20: Hoare triple {4223#(<= main_~j~0 0)} call __VERIFIER_assert((if ~nlen~0 - 1 - ~i~0 < ~nlen~0 then 1 else 0)); {4219#true} is VALID [2020-07-18 06:38:03,174 INFO L280 TraceCheckUtils]: 21: Hoare triple {4219#true} ~cond := #in~cond; {4219#true} is VALID [2020-07-18 06:38:03,174 INFO L280 TraceCheckUtils]: 22: Hoare triple {4219#true} assume !(0 == ~cond); {4219#true} is VALID [2020-07-18 06:38:03,175 INFO L280 TraceCheckUtils]: 23: Hoare triple {4219#true} assume true; {4219#true} is VALID [2020-07-18 06:38:03,176 INFO L275 TraceCheckUtils]: 24: Hoare quadruple {4219#true} {4223#(<= main_~j~0 0)} #73#return; {4223#(<= main_~j~0 0)} is VALID [2020-07-18 06:38:03,176 INFO L280 TraceCheckUtils]: 25: Hoare triple {4223#(<= main_~j~0 0)} #t~post2 := ~j~0; {4232#(<= |main_#t~post2| 0)} is VALID [2020-07-18 06:38:03,177 INFO L280 TraceCheckUtils]: 26: Hoare triple {4232#(<= |main_#t~post2| 0)} ~j~0 := 1 + #t~post2; {4233#(<= main_~j~0 1)} is VALID [2020-07-18 06:38:03,178 INFO L280 TraceCheckUtils]: 27: Hoare triple {4233#(<= main_~j~0 1)} havoc #t~post2; {4233#(<= main_~j~0 1)} is VALID [2020-07-18 06:38:03,178 INFO L280 TraceCheckUtils]: 28: Hoare triple {4233#(<= main_~j~0 1)} assume !!(~j~0 < 8); {4233#(<= main_~j~0 1)} is VALID [2020-07-18 06:38:03,178 INFO L263 TraceCheckUtils]: 29: Hoare triple {4233#(<= main_~j~0 1)} call __VERIFIER_assert((if 0 <= ~nlen~0 - 1 - ~i~0 then 1 else 0)); {4219#true} is VALID [2020-07-18 06:38:03,179 INFO L280 TraceCheckUtils]: 30: Hoare triple {4219#true} ~cond := #in~cond; {4219#true} is VALID [2020-07-18 06:38:03,179 INFO L280 TraceCheckUtils]: 31: Hoare triple {4219#true} assume !(0 == ~cond); {4219#true} is VALID [2020-07-18 06:38:03,179 INFO L280 TraceCheckUtils]: 32: Hoare triple {4219#true} assume true; {4219#true} is VALID [2020-07-18 06:38:03,180 INFO L275 TraceCheckUtils]: 33: Hoare quadruple {4219#true} {4233#(<= main_~j~0 1)} #71#return; {4233#(<= main_~j~0 1)} is VALID [2020-07-18 06:38:03,180 INFO L263 TraceCheckUtils]: 34: Hoare triple {4233#(<= main_~j~0 1)} call __VERIFIER_assert((if ~nlen~0 - 1 - ~i~0 < ~nlen~0 then 1 else 0)); {4219#true} is VALID [2020-07-18 06:38:03,180 INFO L280 TraceCheckUtils]: 35: Hoare triple {4219#true} ~cond := #in~cond; {4219#true} is VALID [2020-07-18 06:38:03,180 INFO L280 TraceCheckUtils]: 36: Hoare triple {4219#true} assume !(0 == ~cond); {4219#true} is VALID [2020-07-18 06:38:03,180 INFO L280 TraceCheckUtils]: 37: Hoare triple {4219#true} assume true; {4219#true} is VALID [2020-07-18 06:38:03,181 INFO L275 TraceCheckUtils]: 38: Hoare quadruple {4219#true} {4233#(<= main_~j~0 1)} #73#return; {4233#(<= main_~j~0 1)} is VALID [2020-07-18 06:38:03,182 INFO L280 TraceCheckUtils]: 39: Hoare triple {4233#(<= main_~j~0 1)} #t~post2 := ~j~0; {4242#(<= |main_#t~post2| 1)} is VALID [2020-07-18 06:38:03,182 INFO L280 TraceCheckUtils]: 40: Hoare triple {4242#(<= |main_#t~post2| 1)} ~j~0 := 1 + #t~post2; {4243#(<= main_~j~0 2)} is VALID [2020-07-18 06:38:03,183 INFO L280 TraceCheckUtils]: 41: Hoare triple {4243#(<= main_~j~0 2)} havoc #t~post2; {4243#(<= main_~j~0 2)} is VALID [2020-07-18 06:38:03,183 INFO L280 TraceCheckUtils]: 42: Hoare triple {4243#(<= main_~j~0 2)} assume !!(~j~0 < 8); {4243#(<= main_~j~0 2)} is VALID [2020-07-18 06:38:03,184 INFO L263 TraceCheckUtils]: 43: Hoare triple {4243#(<= main_~j~0 2)} call __VERIFIER_assert((if 0 <= ~nlen~0 - 1 - ~i~0 then 1 else 0)); {4219#true} is VALID [2020-07-18 06:38:03,184 INFO L280 TraceCheckUtils]: 44: Hoare triple {4219#true} ~cond := #in~cond; {4219#true} is VALID [2020-07-18 06:38:03,184 INFO L280 TraceCheckUtils]: 45: Hoare triple {4219#true} assume !(0 == ~cond); {4219#true} is VALID [2020-07-18 06:38:03,184 INFO L280 TraceCheckUtils]: 46: Hoare triple {4219#true} assume true; {4219#true} is VALID [2020-07-18 06:38:03,185 INFO L275 TraceCheckUtils]: 47: Hoare quadruple {4219#true} {4243#(<= main_~j~0 2)} #71#return; {4243#(<= main_~j~0 2)} is VALID [2020-07-18 06:38:03,185 INFO L263 TraceCheckUtils]: 48: Hoare triple {4243#(<= main_~j~0 2)} call __VERIFIER_assert((if ~nlen~0 - 1 - ~i~0 < ~nlen~0 then 1 else 0)); {4219#true} is VALID [2020-07-18 06:38:03,185 INFO L280 TraceCheckUtils]: 49: Hoare triple {4219#true} ~cond := #in~cond; {4219#true} is VALID [2020-07-18 06:38:03,185 INFO L280 TraceCheckUtils]: 50: Hoare triple {4219#true} assume !(0 == ~cond); {4219#true} is VALID [2020-07-18 06:38:03,185 INFO L280 TraceCheckUtils]: 51: Hoare triple {4219#true} assume true; {4219#true} is VALID [2020-07-18 06:38:03,189 INFO L275 TraceCheckUtils]: 52: Hoare quadruple {4219#true} {4243#(<= main_~j~0 2)} #73#return; {4243#(<= main_~j~0 2)} is VALID [2020-07-18 06:38:03,189 INFO L280 TraceCheckUtils]: 53: Hoare triple {4243#(<= main_~j~0 2)} #t~post2 := ~j~0; {4252#(<= |main_#t~post2| 2)} is VALID [2020-07-18 06:38:03,190 INFO L280 TraceCheckUtils]: 54: Hoare triple {4252#(<= |main_#t~post2| 2)} ~j~0 := 1 + #t~post2; {4253#(<= main_~j~0 3)} is VALID [2020-07-18 06:38:03,191 INFO L280 TraceCheckUtils]: 55: Hoare triple {4253#(<= main_~j~0 3)} havoc #t~post2; {4253#(<= main_~j~0 3)} is VALID [2020-07-18 06:38:03,191 INFO L280 TraceCheckUtils]: 56: Hoare triple {4253#(<= main_~j~0 3)} assume !!(~j~0 < 8); {4253#(<= main_~j~0 3)} is VALID [2020-07-18 06:38:03,191 INFO L263 TraceCheckUtils]: 57: Hoare triple {4253#(<= main_~j~0 3)} call __VERIFIER_assert((if 0 <= ~nlen~0 - 1 - ~i~0 then 1 else 0)); {4219#true} is VALID [2020-07-18 06:38:03,191 INFO L280 TraceCheckUtils]: 58: Hoare triple {4219#true} ~cond := #in~cond; {4219#true} is VALID [2020-07-18 06:38:03,192 INFO L280 TraceCheckUtils]: 59: Hoare triple {4219#true} assume !(0 == ~cond); {4219#true} is VALID [2020-07-18 06:38:03,192 INFO L280 TraceCheckUtils]: 60: Hoare triple {4219#true} assume true; {4219#true} is VALID [2020-07-18 06:38:03,192 INFO L275 TraceCheckUtils]: 61: Hoare quadruple {4219#true} {4253#(<= main_~j~0 3)} #71#return; {4253#(<= main_~j~0 3)} is VALID [2020-07-18 06:38:03,201 INFO L263 TraceCheckUtils]: 62: Hoare triple {4253#(<= main_~j~0 3)} call __VERIFIER_assert((if ~nlen~0 - 1 - ~i~0 < ~nlen~0 then 1 else 0)); {4219#true} is VALID [2020-07-18 06:38:03,201 INFO L280 TraceCheckUtils]: 63: Hoare triple {4219#true} ~cond := #in~cond; {4219#true} is VALID [2020-07-18 06:38:03,201 INFO L280 TraceCheckUtils]: 64: Hoare triple {4219#true} assume !(0 == ~cond); {4219#true} is VALID [2020-07-18 06:38:03,201 INFO L280 TraceCheckUtils]: 65: Hoare triple {4219#true} assume true; {4219#true} is VALID [2020-07-18 06:38:03,202 INFO L275 TraceCheckUtils]: 66: Hoare quadruple {4219#true} {4253#(<= main_~j~0 3)} #73#return; {4253#(<= main_~j~0 3)} is VALID [2020-07-18 06:38:03,203 INFO L280 TraceCheckUtils]: 67: Hoare triple {4253#(<= main_~j~0 3)} #t~post2 := ~j~0; {4262#(<= |main_#t~post2| 3)} is VALID [2020-07-18 06:38:03,203 INFO L280 TraceCheckUtils]: 68: Hoare triple {4262#(<= |main_#t~post2| 3)} ~j~0 := 1 + #t~post2; {4263#(<= main_~j~0 4)} is VALID [2020-07-18 06:38:03,204 INFO L280 TraceCheckUtils]: 69: Hoare triple {4263#(<= main_~j~0 4)} havoc #t~post2; {4263#(<= main_~j~0 4)} is VALID [2020-07-18 06:38:03,204 INFO L280 TraceCheckUtils]: 70: Hoare triple {4263#(<= main_~j~0 4)} assume !!(~j~0 < 8); {4263#(<= main_~j~0 4)} is VALID [2020-07-18 06:38:03,204 INFO L263 TraceCheckUtils]: 71: Hoare triple {4263#(<= main_~j~0 4)} call __VERIFIER_assert((if 0 <= ~nlen~0 - 1 - ~i~0 then 1 else 0)); {4219#true} is VALID [2020-07-18 06:38:03,204 INFO L280 TraceCheckUtils]: 72: Hoare triple {4219#true} ~cond := #in~cond; {4219#true} is VALID [2020-07-18 06:38:03,204 INFO L280 TraceCheckUtils]: 73: Hoare triple {4219#true} assume !(0 == ~cond); {4219#true} is VALID [2020-07-18 06:38:03,205 INFO L280 TraceCheckUtils]: 74: Hoare triple {4219#true} assume true; {4219#true} is VALID [2020-07-18 06:38:03,205 INFO L275 TraceCheckUtils]: 75: Hoare quadruple {4219#true} {4263#(<= main_~j~0 4)} #71#return; {4263#(<= main_~j~0 4)} is VALID [2020-07-18 06:38:03,205 INFO L263 TraceCheckUtils]: 76: Hoare triple {4263#(<= main_~j~0 4)} call __VERIFIER_assert((if ~nlen~0 - 1 - ~i~0 < ~nlen~0 then 1 else 0)); {4219#true} is VALID [2020-07-18 06:38:03,205 INFO L280 TraceCheckUtils]: 77: Hoare triple {4219#true} ~cond := #in~cond; {4219#true} is VALID [2020-07-18 06:38:03,205 INFO L280 TraceCheckUtils]: 78: Hoare triple {4219#true} assume !(0 == ~cond); {4219#true} is VALID [2020-07-18 06:38:03,206 INFO L280 TraceCheckUtils]: 79: Hoare triple {4219#true} assume true; {4219#true} is VALID [2020-07-18 06:38:03,206 INFO L275 TraceCheckUtils]: 80: Hoare quadruple {4219#true} {4263#(<= main_~j~0 4)} #73#return; {4263#(<= main_~j~0 4)} is VALID [2020-07-18 06:38:03,206 INFO L280 TraceCheckUtils]: 81: Hoare triple {4263#(<= main_~j~0 4)} #t~post2 := ~j~0; {4272#(<= |main_#t~post2| 4)} is VALID [2020-07-18 06:38:03,207 INFO L280 TraceCheckUtils]: 82: Hoare triple {4272#(<= |main_#t~post2| 4)} ~j~0 := 1 + #t~post2; {4273#(<= main_~j~0 5)} is VALID [2020-07-18 06:38:03,207 INFO L280 TraceCheckUtils]: 83: Hoare triple {4273#(<= main_~j~0 5)} havoc #t~post2; {4273#(<= main_~j~0 5)} is VALID [2020-07-18 06:38:03,208 INFO L280 TraceCheckUtils]: 84: Hoare triple {4273#(<= main_~j~0 5)} assume !!(~j~0 < 8); {4273#(<= main_~j~0 5)} is VALID [2020-07-18 06:38:03,208 INFO L263 TraceCheckUtils]: 85: Hoare triple {4273#(<= main_~j~0 5)} call __VERIFIER_assert((if 0 <= ~nlen~0 - 1 - ~i~0 then 1 else 0)); {4219#true} is VALID [2020-07-18 06:38:03,208 INFO L280 TraceCheckUtils]: 86: Hoare triple {4219#true} ~cond := #in~cond; {4219#true} is VALID [2020-07-18 06:38:03,208 INFO L280 TraceCheckUtils]: 87: Hoare triple {4219#true} assume !(0 == ~cond); {4219#true} is VALID [2020-07-18 06:38:03,208 INFO L280 TraceCheckUtils]: 88: Hoare triple {4219#true} assume true; {4219#true} is VALID [2020-07-18 06:38:03,209 INFO L275 TraceCheckUtils]: 89: Hoare quadruple {4219#true} {4273#(<= main_~j~0 5)} #71#return; {4273#(<= main_~j~0 5)} is VALID [2020-07-18 06:38:03,209 INFO L263 TraceCheckUtils]: 90: Hoare triple {4273#(<= main_~j~0 5)} call __VERIFIER_assert((if ~nlen~0 - 1 - ~i~0 < ~nlen~0 then 1 else 0)); {4219#true} is VALID [2020-07-18 06:38:03,209 INFO L280 TraceCheckUtils]: 91: Hoare triple {4219#true} ~cond := #in~cond; {4219#true} is VALID [2020-07-18 06:38:03,209 INFO L280 TraceCheckUtils]: 92: Hoare triple {4219#true} assume !(0 == ~cond); {4219#true} is VALID [2020-07-18 06:38:03,209 INFO L280 TraceCheckUtils]: 93: Hoare triple {4219#true} assume true; {4219#true} is VALID [2020-07-18 06:38:03,210 INFO L275 TraceCheckUtils]: 94: Hoare quadruple {4219#true} {4273#(<= main_~j~0 5)} #73#return; {4273#(<= main_~j~0 5)} is VALID [2020-07-18 06:38:03,210 INFO L280 TraceCheckUtils]: 95: Hoare triple {4273#(<= main_~j~0 5)} #t~post2 := ~j~0; {4282#(<= |main_#t~post2| 5)} is VALID [2020-07-18 06:38:03,211 INFO L280 TraceCheckUtils]: 96: Hoare triple {4282#(<= |main_#t~post2| 5)} ~j~0 := 1 + #t~post2; {4283#(<= main_~j~0 6)} is VALID [2020-07-18 06:38:03,211 INFO L280 TraceCheckUtils]: 97: Hoare triple {4283#(<= main_~j~0 6)} havoc #t~post2; {4283#(<= main_~j~0 6)} is VALID [2020-07-18 06:38:03,211 INFO L280 TraceCheckUtils]: 98: Hoare triple {4283#(<= main_~j~0 6)} assume !(~j~0 < 8); {4220#false} is VALID [2020-07-18 06:38:03,212 INFO L280 TraceCheckUtils]: 99: Hoare triple {4220#false} #t~post1 := ~i~0; {4220#false} is VALID [2020-07-18 06:38:03,212 INFO L280 TraceCheckUtils]: 100: Hoare triple {4220#false} ~i~0 := 1 + #t~post1; {4220#false} is VALID [2020-07-18 06:38:03,212 INFO L280 TraceCheckUtils]: 101: Hoare triple {4220#false} havoc #t~post1; {4220#false} is VALID [2020-07-18 06:38:03,212 INFO L280 TraceCheckUtils]: 102: Hoare triple {4220#false} assume !!(~i~0 < ~nlen~0); {4220#false} is VALID [2020-07-18 06:38:03,212 INFO L280 TraceCheckUtils]: 103: Hoare triple {4220#false} ~j~0 := 0; {4220#false} is VALID [2020-07-18 06:38:03,213 INFO L280 TraceCheckUtils]: 104: Hoare triple {4220#false} assume !!(~j~0 < 8); {4220#false} is VALID [2020-07-18 06:38:03,213 INFO L263 TraceCheckUtils]: 105: Hoare triple {4220#false} call __VERIFIER_assert((if 0 <= ~nlen~0 - 1 - ~i~0 then 1 else 0)); {4219#true} is VALID [2020-07-18 06:38:03,213 INFO L280 TraceCheckUtils]: 106: Hoare triple {4219#true} ~cond := #in~cond; {4219#true} is VALID [2020-07-18 06:38:03,213 INFO L280 TraceCheckUtils]: 107: Hoare triple {4219#true} assume !(0 == ~cond); {4219#true} is VALID [2020-07-18 06:38:03,213 INFO L280 TraceCheckUtils]: 108: Hoare triple {4219#true} assume true; {4219#true} is VALID [2020-07-18 06:38:03,214 INFO L275 TraceCheckUtils]: 109: Hoare quadruple {4219#true} {4220#false} #71#return; {4220#false} is VALID [2020-07-18 06:38:03,214 INFO L263 TraceCheckUtils]: 110: Hoare triple {4220#false} call __VERIFIER_assert((if ~nlen~0 - 1 - ~i~0 < ~nlen~0 then 1 else 0)); {4220#false} is VALID [2020-07-18 06:38:03,214 INFO L280 TraceCheckUtils]: 111: Hoare triple {4220#false} ~cond := #in~cond; {4220#false} is VALID [2020-07-18 06:38:03,214 INFO L280 TraceCheckUtils]: 112: Hoare triple {4220#false} assume 0 == ~cond; {4220#false} is VALID [2020-07-18 06:38:03,214 INFO L280 TraceCheckUtils]: 113: Hoare triple {4220#false} assume !false; {4220#false} is VALID [2020-07-18 06:38:03,220 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 47 proven. 96 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2020-07-18 06:38:03,221 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1323727955] [2020-07-18 06:38:03,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-18 06:38:03,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-07-18 06:38:03,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676581216] [2020-07-18 06:38:03,222 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 114 [2020-07-18 06:38:03,222 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-18 06:38:03,223 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 15 states. [2020-07-18 06:38:03,311 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 78 edges. 78 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 06:38:03,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-07-18 06:38:03,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-18 06:38:03,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-07-18 06:38:03,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-07-18 06:38:03,312 INFO L87 Difference]: Start difference. First operand 107 states and 130 transitions. Second operand 15 states. [2020-07-18 06:38:04,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 06:38:04,114 INFO L93 Difference]: Finished difference Result 179 states and 223 transitions. [2020-07-18 06:38:04,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-07-18 06:38:04,115 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 114 [2020-07-18 06:38:04,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-18 06:38:04,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-07-18 06:38:04,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 106 transitions. [2020-07-18 06:38:04,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-07-18 06:38:04,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 106 transitions. [2020-07-18 06:38:04,122 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 21 states and 106 transitions. [2020-07-18 06:38:04,268 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 106 edges. 106 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 06:38:04,272 INFO L225 Difference]: With dead ends: 179 [2020-07-18 06:38:04,272 INFO L226 Difference]: Without dead ends: 127 [2020-07-18 06:38:04,273 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=243, Invalid=459, Unknown=0, NotChecked=0, Total=702 [2020-07-18 06:38:04,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-07-18 06:38:04,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 119. [2020-07-18 06:38:04,485 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-18 06:38:04,485 INFO L82 GeneralOperation]: Start isEquivalent. First operand 127 states. Second operand 119 states. [2020-07-18 06:38:04,485 INFO L74 IsIncluded]: Start isIncluded. First operand 127 states. Second operand 119 states. [2020-07-18 06:38:04,485 INFO L87 Difference]: Start difference. First operand 127 states. Second operand 119 states. [2020-07-18 06:38:04,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 06:38:04,491 INFO L93 Difference]: Finished difference Result 127 states and 158 transitions. [2020-07-18 06:38:04,491 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 158 transitions. [2020-07-18 06:38:04,491 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 06:38:04,491 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 06:38:04,492 INFO L74 IsIncluded]: Start isIncluded. First operand 119 states. Second operand 127 states. [2020-07-18 06:38:04,492 INFO L87 Difference]: Start difference. First operand 119 states. Second operand 127 states. [2020-07-18 06:38:04,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 06:38:04,497 INFO L93 Difference]: Finished difference Result 127 states and 158 transitions. [2020-07-18 06:38:04,497 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 158 transitions. [2020-07-18 06:38:04,497 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 06:38:04,498 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 06:38:04,498 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-18 06:38:04,498 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-18 06:38:04,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-07-18 06:38:04,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 146 transitions. [2020-07-18 06:38:04,502 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 146 transitions. Word has length 114 [2020-07-18 06:38:04,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-18 06:38:04,502 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 146 transitions. [2020-07-18 06:38:04,502 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-07-18 06:38:04,502 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 119 states and 146 transitions. [2020-07-18 06:38:04,699 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 146 edges. 146 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 06:38:04,699 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 146 transitions. [2020-07-18 06:38:04,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-07-18 06:38:04,701 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 06:38:04,701 INFO L422 BasicCegarLoop]: trace histogram [16, 15, 15, 8, 8, 8, 8, 7, 7, 7, 7, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-18 06:38:04,701 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-18 06:38:04,701 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 06:38:04,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 06:38:04,702 INFO L82 PathProgramCache]: Analyzing trace with hash 724624314, now seen corresponding path program 7 times [2020-07-18 06:38:04,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 06:38:04,702 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [960883682] [2020-07-18 06:38:04,702 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 06:38:04,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:38:04,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:38:04,926 INFO L280 TraceCheckUtils]: 0: Hoare triple {5164#true} assume true; {5164#true} is VALID [2020-07-18 06:38:04,926 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {5164#true} {5164#true} #67#return; {5164#true} is VALID [2020-07-18 06:38:04,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:38:04,933 INFO L280 TraceCheckUtils]: 0: Hoare triple {5164#true} ~cond := #in~cond; {5164#true} is VALID [2020-07-18 06:38:04,933 INFO L280 TraceCheckUtils]: 1: Hoare triple {5164#true} assume !(0 == ~cond); {5164#true} is VALID [2020-07-18 06:38:04,934 INFO L280 TraceCheckUtils]: 2: Hoare triple {5164#true} assume true; {5164#true} is VALID [2020-07-18 06:38:04,936 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {5164#true} {5168#(<= main_~j~0 0)} #71#return; {5168#(<= main_~j~0 0)} is VALID [2020-07-18 06:38:04,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:38:04,943 INFO L280 TraceCheckUtils]: 0: Hoare triple {5164#true} ~cond := #in~cond; {5164#true} is VALID [2020-07-18 06:38:04,943 INFO L280 TraceCheckUtils]: 1: Hoare triple {5164#true} assume !(0 == ~cond); {5164#true} is VALID [2020-07-18 06:38:04,944 INFO L280 TraceCheckUtils]: 2: Hoare triple {5164#true} assume true; {5164#true} is VALID [2020-07-18 06:38:04,944 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {5164#true} {5168#(<= main_~j~0 0)} #73#return; {5168#(<= main_~j~0 0)} is VALID [2020-07-18 06:38:04,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:38:04,948 INFO L280 TraceCheckUtils]: 0: Hoare triple {5164#true} ~cond := #in~cond; {5164#true} is VALID [2020-07-18 06:38:04,949 INFO L280 TraceCheckUtils]: 1: Hoare triple {5164#true} assume !(0 == ~cond); {5164#true} is VALID [2020-07-18 06:38:04,949 INFO L280 TraceCheckUtils]: 2: Hoare triple {5164#true} assume true; {5164#true} is VALID [2020-07-18 06:38:04,950 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {5164#true} {5178#(<= main_~j~0 1)} #71#return; {5178#(<= main_~j~0 1)} is VALID [2020-07-18 06:38:04,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:38:04,954 INFO L280 TraceCheckUtils]: 0: Hoare triple {5164#true} ~cond := #in~cond; {5164#true} is VALID [2020-07-18 06:38:04,954 INFO L280 TraceCheckUtils]: 1: Hoare triple {5164#true} assume !(0 == ~cond); {5164#true} is VALID [2020-07-18 06:38:04,955 INFO L280 TraceCheckUtils]: 2: Hoare triple {5164#true} assume true; {5164#true} is VALID [2020-07-18 06:38:04,955 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {5164#true} {5178#(<= main_~j~0 1)} #73#return; {5178#(<= main_~j~0 1)} is VALID [2020-07-18 06:38:04,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:38:04,959 INFO L280 TraceCheckUtils]: 0: Hoare triple {5164#true} ~cond := #in~cond; {5164#true} is VALID [2020-07-18 06:38:04,960 INFO L280 TraceCheckUtils]: 1: Hoare triple {5164#true} assume !(0 == ~cond); {5164#true} is VALID [2020-07-18 06:38:04,960 INFO L280 TraceCheckUtils]: 2: Hoare triple {5164#true} assume true; {5164#true} is VALID [2020-07-18 06:38:04,961 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {5164#true} {5188#(<= main_~j~0 2)} #71#return; {5188#(<= main_~j~0 2)} is VALID [2020-07-18 06:38:04,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:38:04,965 INFO L280 TraceCheckUtils]: 0: Hoare triple {5164#true} ~cond := #in~cond; {5164#true} is VALID [2020-07-18 06:38:04,965 INFO L280 TraceCheckUtils]: 1: Hoare triple {5164#true} assume !(0 == ~cond); {5164#true} is VALID [2020-07-18 06:38:04,966 INFO L280 TraceCheckUtils]: 2: Hoare triple {5164#true} assume true; {5164#true} is VALID [2020-07-18 06:38:04,966 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {5164#true} {5188#(<= main_~j~0 2)} #73#return; {5188#(<= main_~j~0 2)} is VALID [2020-07-18 06:38:04,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:38:04,970 INFO L280 TraceCheckUtils]: 0: Hoare triple {5164#true} ~cond := #in~cond; {5164#true} is VALID [2020-07-18 06:38:04,970 INFO L280 TraceCheckUtils]: 1: Hoare triple {5164#true} assume !(0 == ~cond); {5164#true} is VALID [2020-07-18 06:38:04,970 INFO L280 TraceCheckUtils]: 2: Hoare triple {5164#true} assume true; {5164#true} is VALID [2020-07-18 06:38:04,971 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {5164#true} {5198#(<= main_~j~0 3)} #71#return; {5198#(<= main_~j~0 3)} is VALID [2020-07-18 06:38:04,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:38:04,975 INFO L280 TraceCheckUtils]: 0: Hoare triple {5164#true} ~cond := #in~cond; {5164#true} is VALID [2020-07-18 06:38:04,976 INFO L280 TraceCheckUtils]: 1: Hoare triple {5164#true} assume !(0 == ~cond); {5164#true} is VALID [2020-07-18 06:38:04,976 INFO L280 TraceCheckUtils]: 2: Hoare triple {5164#true} assume true; {5164#true} is VALID [2020-07-18 06:38:04,977 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {5164#true} {5198#(<= main_~j~0 3)} #73#return; {5198#(<= main_~j~0 3)} is VALID [2020-07-18 06:38:04,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:38:04,981 INFO L280 TraceCheckUtils]: 0: Hoare triple {5164#true} ~cond := #in~cond; {5164#true} is VALID [2020-07-18 06:38:04,981 INFO L280 TraceCheckUtils]: 1: Hoare triple {5164#true} assume !(0 == ~cond); {5164#true} is VALID [2020-07-18 06:38:04,981 INFO L280 TraceCheckUtils]: 2: Hoare triple {5164#true} assume true; {5164#true} is VALID [2020-07-18 06:38:04,982 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {5164#true} {5208#(<= main_~j~0 4)} #71#return; {5208#(<= main_~j~0 4)} is VALID [2020-07-18 06:38:04,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:38:04,986 INFO L280 TraceCheckUtils]: 0: Hoare triple {5164#true} ~cond := #in~cond; {5164#true} is VALID [2020-07-18 06:38:04,986 INFO L280 TraceCheckUtils]: 1: Hoare triple {5164#true} assume !(0 == ~cond); {5164#true} is VALID [2020-07-18 06:38:04,986 INFO L280 TraceCheckUtils]: 2: Hoare triple {5164#true} assume true; {5164#true} is VALID [2020-07-18 06:38:04,987 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {5164#true} {5208#(<= main_~j~0 4)} #73#return; {5208#(<= main_~j~0 4)} is VALID [2020-07-18 06:38:04,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:38:04,992 INFO L280 TraceCheckUtils]: 0: Hoare triple {5164#true} ~cond := #in~cond; {5164#true} is VALID [2020-07-18 06:38:04,992 INFO L280 TraceCheckUtils]: 1: Hoare triple {5164#true} assume !(0 == ~cond); {5164#true} is VALID [2020-07-18 06:38:04,992 INFO L280 TraceCheckUtils]: 2: Hoare triple {5164#true} assume true; {5164#true} is VALID [2020-07-18 06:38:04,993 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {5164#true} {5218#(<= main_~j~0 5)} #71#return; {5218#(<= main_~j~0 5)} is VALID [2020-07-18 06:38:04,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:38:04,997 INFO L280 TraceCheckUtils]: 0: Hoare triple {5164#true} ~cond := #in~cond; {5164#true} is VALID [2020-07-18 06:38:04,997 INFO L280 TraceCheckUtils]: 1: Hoare triple {5164#true} assume !(0 == ~cond); {5164#true} is VALID [2020-07-18 06:38:04,997 INFO L280 TraceCheckUtils]: 2: Hoare triple {5164#true} assume true; {5164#true} is VALID [2020-07-18 06:38:04,998 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {5164#true} {5218#(<= main_~j~0 5)} #73#return; {5218#(<= main_~j~0 5)} is VALID [2020-07-18 06:38:05,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:38:05,002 INFO L280 TraceCheckUtils]: 0: Hoare triple {5164#true} ~cond := #in~cond; {5164#true} is VALID [2020-07-18 06:38:05,003 INFO L280 TraceCheckUtils]: 1: Hoare triple {5164#true} assume !(0 == ~cond); {5164#true} is VALID [2020-07-18 06:38:05,003 INFO L280 TraceCheckUtils]: 2: Hoare triple {5164#true} assume true; {5164#true} is VALID [2020-07-18 06:38:05,004 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {5164#true} {5228#(<= main_~j~0 6)} #71#return; {5228#(<= main_~j~0 6)} is VALID [2020-07-18 06:38:05,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:38:05,007 INFO L280 TraceCheckUtils]: 0: Hoare triple {5164#true} ~cond := #in~cond; {5164#true} is VALID [2020-07-18 06:38:05,008 INFO L280 TraceCheckUtils]: 1: Hoare triple {5164#true} assume !(0 == ~cond); {5164#true} is VALID [2020-07-18 06:38:05,008 INFO L280 TraceCheckUtils]: 2: Hoare triple {5164#true} assume true; {5164#true} is VALID [2020-07-18 06:38:05,008 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {5164#true} {5228#(<= main_~j~0 6)} #73#return; {5228#(<= main_~j~0 6)} is VALID [2020-07-18 06:38:05,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:38:05,011 INFO L280 TraceCheckUtils]: 0: Hoare triple {5164#true} ~cond := #in~cond; {5164#true} is VALID [2020-07-18 06:38:05,012 INFO L280 TraceCheckUtils]: 1: Hoare triple {5164#true} assume !(0 == ~cond); {5164#true} is VALID [2020-07-18 06:38:05,012 INFO L280 TraceCheckUtils]: 2: Hoare triple {5164#true} assume true; {5164#true} is VALID [2020-07-18 06:38:05,012 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {5164#true} {5165#false} #71#return; {5165#false} is VALID [2020-07-18 06:38:05,012 INFO L263 TraceCheckUtils]: 0: Hoare triple {5164#true} call ULTIMATE.init(); {5164#true} is VALID [2020-07-18 06:38:05,012 INFO L280 TraceCheckUtils]: 1: Hoare triple {5164#true} assume true; {5164#true} is VALID [2020-07-18 06:38:05,013 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {5164#true} {5164#true} #67#return; {5164#true} is VALID [2020-07-18 06:38:05,013 INFO L263 TraceCheckUtils]: 3: Hoare triple {5164#true} call #t~ret3 := main(); {5164#true} is VALID [2020-07-18 06:38:05,013 INFO L280 TraceCheckUtils]: 4: Hoare triple {5164#true} havoc ~offset~0; {5164#true} is VALID [2020-07-18 06:38:05,013 INFO L280 TraceCheckUtils]: 5: Hoare triple {5164#true} havoc ~length~0; {5164#true} is VALID [2020-07-18 06:38:05,013 INFO L280 TraceCheckUtils]: 6: Hoare triple {5164#true} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; {5164#true} is VALID [2020-07-18 06:38:05,013 INFO L280 TraceCheckUtils]: 7: Hoare triple {5164#true} ~nlen~0 := #t~nondet0; {5164#true} is VALID [2020-07-18 06:38:05,014 INFO L280 TraceCheckUtils]: 8: Hoare triple {5164#true} havoc #t~nondet0; {5164#true} is VALID [2020-07-18 06:38:05,014 INFO L280 TraceCheckUtils]: 9: Hoare triple {5164#true} havoc ~i~0; {5164#true} is VALID [2020-07-18 06:38:05,014 INFO L280 TraceCheckUtils]: 10: Hoare triple {5164#true} havoc ~j~0; {5164#true} is VALID [2020-07-18 06:38:05,014 INFO L280 TraceCheckUtils]: 11: Hoare triple {5164#true} ~i~0 := 0; {5164#true} is VALID [2020-07-18 06:38:05,014 INFO L280 TraceCheckUtils]: 12: Hoare triple {5164#true} assume !!(~i~0 < ~nlen~0); {5164#true} is VALID [2020-07-18 06:38:05,015 INFO L280 TraceCheckUtils]: 13: Hoare triple {5164#true} ~j~0 := 0; {5168#(<= main_~j~0 0)} is VALID [2020-07-18 06:38:05,015 INFO L280 TraceCheckUtils]: 14: Hoare triple {5168#(<= main_~j~0 0)} assume !!(~j~0 < 8); {5168#(<= main_~j~0 0)} is VALID [2020-07-18 06:38:05,016 INFO L263 TraceCheckUtils]: 15: Hoare triple {5168#(<= main_~j~0 0)} call __VERIFIER_assert((if 0 <= ~nlen~0 - 1 - ~i~0 then 1 else 0)); {5164#true} is VALID [2020-07-18 06:38:05,016 INFO L280 TraceCheckUtils]: 16: Hoare triple {5164#true} ~cond := #in~cond; {5164#true} is VALID [2020-07-18 06:38:05,016 INFO L280 TraceCheckUtils]: 17: Hoare triple {5164#true} assume !(0 == ~cond); {5164#true} is VALID [2020-07-18 06:38:05,016 INFO L280 TraceCheckUtils]: 18: Hoare triple {5164#true} assume true; {5164#true} is VALID [2020-07-18 06:38:05,017 INFO L275 TraceCheckUtils]: 19: Hoare quadruple {5164#true} {5168#(<= main_~j~0 0)} #71#return; {5168#(<= main_~j~0 0)} is VALID [2020-07-18 06:38:05,017 INFO L263 TraceCheckUtils]: 20: Hoare triple {5168#(<= main_~j~0 0)} call __VERIFIER_assert((if ~nlen~0 - 1 - ~i~0 < ~nlen~0 then 1 else 0)); {5164#true} is VALID [2020-07-18 06:38:05,017 INFO L280 TraceCheckUtils]: 21: Hoare triple {5164#true} ~cond := #in~cond; {5164#true} is VALID [2020-07-18 06:38:05,017 INFO L280 TraceCheckUtils]: 22: Hoare triple {5164#true} assume !(0 == ~cond); {5164#true} is VALID [2020-07-18 06:38:05,018 INFO L280 TraceCheckUtils]: 23: Hoare triple {5164#true} assume true; {5164#true} is VALID [2020-07-18 06:38:05,018 INFO L275 TraceCheckUtils]: 24: Hoare quadruple {5164#true} {5168#(<= main_~j~0 0)} #73#return; {5168#(<= main_~j~0 0)} is VALID [2020-07-18 06:38:05,019 INFO L280 TraceCheckUtils]: 25: Hoare triple {5168#(<= main_~j~0 0)} #t~post2 := ~j~0; {5177#(<= |main_#t~post2| 0)} is VALID [2020-07-18 06:38:05,020 INFO L280 TraceCheckUtils]: 26: Hoare triple {5177#(<= |main_#t~post2| 0)} ~j~0 := 1 + #t~post2; {5178#(<= main_~j~0 1)} is VALID [2020-07-18 06:38:05,020 INFO L280 TraceCheckUtils]: 27: Hoare triple {5178#(<= main_~j~0 1)} havoc #t~post2; {5178#(<= main_~j~0 1)} is VALID [2020-07-18 06:38:05,021 INFO L280 TraceCheckUtils]: 28: Hoare triple {5178#(<= main_~j~0 1)} assume !!(~j~0 < 8); {5178#(<= main_~j~0 1)} is VALID [2020-07-18 06:38:05,021 INFO L263 TraceCheckUtils]: 29: Hoare triple {5178#(<= main_~j~0 1)} call __VERIFIER_assert((if 0 <= ~nlen~0 - 1 - ~i~0 then 1 else 0)); {5164#true} is VALID [2020-07-18 06:38:05,021 INFO L280 TraceCheckUtils]: 30: Hoare triple {5164#true} ~cond := #in~cond; {5164#true} is VALID [2020-07-18 06:38:05,021 INFO L280 TraceCheckUtils]: 31: Hoare triple {5164#true} assume !(0 == ~cond); {5164#true} is VALID [2020-07-18 06:38:05,021 INFO L280 TraceCheckUtils]: 32: Hoare triple {5164#true} assume true; {5164#true} is VALID [2020-07-18 06:38:05,022 INFO L275 TraceCheckUtils]: 33: Hoare quadruple {5164#true} {5178#(<= main_~j~0 1)} #71#return; {5178#(<= main_~j~0 1)} is VALID [2020-07-18 06:38:05,022 INFO L263 TraceCheckUtils]: 34: Hoare triple {5178#(<= main_~j~0 1)} call __VERIFIER_assert((if ~nlen~0 - 1 - ~i~0 < ~nlen~0 then 1 else 0)); {5164#true} is VALID [2020-07-18 06:38:05,022 INFO L280 TraceCheckUtils]: 35: Hoare triple {5164#true} ~cond := #in~cond; {5164#true} is VALID [2020-07-18 06:38:05,023 INFO L280 TraceCheckUtils]: 36: Hoare triple {5164#true} assume !(0 == ~cond); {5164#true} is VALID [2020-07-18 06:38:05,023 INFO L280 TraceCheckUtils]: 37: Hoare triple {5164#true} assume true; {5164#true} is VALID [2020-07-18 06:38:05,023 INFO L275 TraceCheckUtils]: 38: Hoare quadruple {5164#true} {5178#(<= main_~j~0 1)} #73#return; {5178#(<= main_~j~0 1)} is VALID [2020-07-18 06:38:05,024 INFO L280 TraceCheckUtils]: 39: Hoare triple {5178#(<= main_~j~0 1)} #t~post2 := ~j~0; {5187#(<= |main_#t~post2| 1)} is VALID [2020-07-18 06:38:05,025 INFO L280 TraceCheckUtils]: 40: Hoare triple {5187#(<= |main_#t~post2| 1)} ~j~0 := 1 + #t~post2; {5188#(<= main_~j~0 2)} is VALID [2020-07-18 06:38:05,025 INFO L280 TraceCheckUtils]: 41: Hoare triple {5188#(<= main_~j~0 2)} havoc #t~post2; {5188#(<= main_~j~0 2)} is VALID [2020-07-18 06:38:05,026 INFO L280 TraceCheckUtils]: 42: Hoare triple {5188#(<= main_~j~0 2)} assume !!(~j~0 < 8); {5188#(<= main_~j~0 2)} is VALID [2020-07-18 06:38:05,026 INFO L263 TraceCheckUtils]: 43: Hoare triple {5188#(<= main_~j~0 2)} call __VERIFIER_assert((if 0 <= ~nlen~0 - 1 - ~i~0 then 1 else 0)); {5164#true} is VALID [2020-07-18 06:38:05,026 INFO L280 TraceCheckUtils]: 44: Hoare triple {5164#true} ~cond := #in~cond; {5164#true} is VALID [2020-07-18 06:38:05,026 INFO L280 TraceCheckUtils]: 45: Hoare triple {5164#true} assume !(0 == ~cond); {5164#true} is VALID [2020-07-18 06:38:05,026 INFO L280 TraceCheckUtils]: 46: Hoare triple {5164#true} assume true; {5164#true} is VALID [2020-07-18 06:38:05,027 INFO L275 TraceCheckUtils]: 47: Hoare quadruple {5164#true} {5188#(<= main_~j~0 2)} #71#return; {5188#(<= main_~j~0 2)} is VALID [2020-07-18 06:38:05,027 INFO L263 TraceCheckUtils]: 48: Hoare triple {5188#(<= main_~j~0 2)} call __VERIFIER_assert((if ~nlen~0 - 1 - ~i~0 < ~nlen~0 then 1 else 0)); {5164#true} is VALID [2020-07-18 06:38:05,028 INFO L280 TraceCheckUtils]: 49: Hoare triple {5164#true} ~cond := #in~cond; {5164#true} is VALID [2020-07-18 06:38:05,028 INFO L280 TraceCheckUtils]: 50: Hoare triple {5164#true} assume !(0 == ~cond); {5164#true} is VALID [2020-07-18 06:38:05,028 INFO L280 TraceCheckUtils]: 51: Hoare triple {5164#true} assume true; {5164#true} is VALID [2020-07-18 06:38:05,028 INFO L275 TraceCheckUtils]: 52: Hoare quadruple {5164#true} {5188#(<= main_~j~0 2)} #73#return; {5188#(<= main_~j~0 2)} is VALID [2020-07-18 06:38:05,029 INFO L280 TraceCheckUtils]: 53: Hoare triple {5188#(<= main_~j~0 2)} #t~post2 := ~j~0; {5197#(<= |main_#t~post2| 2)} is VALID [2020-07-18 06:38:05,030 INFO L280 TraceCheckUtils]: 54: Hoare triple {5197#(<= |main_#t~post2| 2)} ~j~0 := 1 + #t~post2; {5198#(<= main_~j~0 3)} is VALID [2020-07-18 06:38:05,030 INFO L280 TraceCheckUtils]: 55: Hoare triple {5198#(<= main_~j~0 3)} havoc #t~post2; {5198#(<= main_~j~0 3)} is VALID [2020-07-18 06:38:05,031 INFO L280 TraceCheckUtils]: 56: Hoare triple {5198#(<= main_~j~0 3)} assume !!(~j~0 < 8); {5198#(<= main_~j~0 3)} is VALID [2020-07-18 06:38:05,031 INFO L263 TraceCheckUtils]: 57: Hoare triple {5198#(<= main_~j~0 3)} call __VERIFIER_assert((if 0 <= ~nlen~0 - 1 - ~i~0 then 1 else 0)); {5164#true} is VALID [2020-07-18 06:38:05,031 INFO L280 TraceCheckUtils]: 58: Hoare triple {5164#true} ~cond := #in~cond; {5164#true} is VALID [2020-07-18 06:38:05,031 INFO L280 TraceCheckUtils]: 59: Hoare triple {5164#true} assume !(0 == ~cond); {5164#true} is VALID [2020-07-18 06:38:05,032 INFO L280 TraceCheckUtils]: 60: Hoare triple {5164#true} assume true; {5164#true} is VALID [2020-07-18 06:38:05,032 INFO L275 TraceCheckUtils]: 61: Hoare quadruple {5164#true} {5198#(<= main_~j~0 3)} #71#return; {5198#(<= main_~j~0 3)} is VALID [2020-07-18 06:38:05,032 INFO L263 TraceCheckUtils]: 62: Hoare triple {5198#(<= main_~j~0 3)} call __VERIFIER_assert((if ~nlen~0 - 1 - ~i~0 < ~nlen~0 then 1 else 0)); {5164#true} is VALID [2020-07-18 06:38:05,033 INFO L280 TraceCheckUtils]: 63: Hoare triple {5164#true} ~cond := #in~cond; {5164#true} is VALID [2020-07-18 06:38:05,033 INFO L280 TraceCheckUtils]: 64: Hoare triple {5164#true} assume !(0 == ~cond); {5164#true} is VALID [2020-07-18 06:38:05,033 INFO L280 TraceCheckUtils]: 65: Hoare triple {5164#true} assume true; {5164#true} is VALID [2020-07-18 06:38:05,034 INFO L275 TraceCheckUtils]: 66: Hoare quadruple {5164#true} {5198#(<= main_~j~0 3)} #73#return; {5198#(<= main_~j~0 3)} is VALID [2020-07-18 06:38:05,034 INFO L280 TraceCheckUtils]: 67: Hoare triple {5198#(<= main_~j~0 3)} #t~post2 := ~j~0; {5207#(<= |main_#t~post2| 3)} is VALID [2020-07-18 06:38:05,035 INFO L280 TraceCheckUtils]: 68: Hoare triple {5207#(<= |main_#t~post2| 3)} ~j~0 := 1 + #t~post2; {5208#(<= main_~j~0 4)} is VALID [2020-07-18 06:38:05,036 INFO L280 TraceCheckUtils]: 69: Hoare triple {5208#(<= main_~j~0 4)} havoc #t~post2; {5208#(<= main_~j~0 4)} is VALID [2020-07-18 06:38:05,036 INFO L280 TraceCheckUtils]: 70: Hoare triple {5208#(<= main_~j~0 4)} assume !!(~j~0 < 8); {5208#(<= main_~j~0 4)} is VALID [2020-07-18 06:38:05,036 INFO L263 TraceCheckUtils]: 71: Hoare triple {5208#(<= main_~j~0 4)} call __VERIFIER_assert((if 0 <= ~nlen~0 - 1 - ~i~0 then 1 else 0)); {5164#true} is VALID [2020-07-18 06:38:05,037 INFO L280 TraceCheckUtils]: 72: Hoare triple {5164#true} ~cond := #in~cond; {5164#true} is VALID [2020-07-18 06:38:05,037 INFO L280 TraceCheckUtils]: 73: Hoare triple {5164#true} assume !(0 == ~cond); {5164#true} is VALID [2020-07-18 06:38:05,037 INFO L280 TraceCheckUtils]: 74: Hoare triple {5164#true} assume true; {5164#true} is VALID [2020-07-18 06:38:05,038 INFO L275 TraceCheckUtils]: 75: Hoare quadruple {5164#true} {5208#(<= main_~j~0 4)} #71#return; {5208#(<= main_~j~0 4)} is VALID [2020-07-18 06:38:05,038 INFO L263 TraceCheckUtils]: 76: Hoare triple {5208#(<= main_~j~0 4)} call __VERIFIER_assert((if ~nlen~0 - 1 - ~i~0 < ~nlen~0 then 1 else 0)); {5164#true} is VALID [2020-07-18 06:38:05,038 INFO L280 TraceCheckUtils]: 77: Hoare triple {5164#true} ~cond := #in~cond; {5164#true} is VALID [2020-07-18 06:38:05,038 INFO L280 TraceCheckUtils]: 78: Hoare triple {5164#true} assume !(0 == ~cond); {5164#true} is VALID [2020-07-18 06:38:05,038 INFO L280 TraceCheckUtils]: 79: Hoare triple {5164#true} assume true; {5164#true} is VALID [2020-07-18 06:38:05,039 INFO L275 TraceCheckUtils]: 80: Hoare quadruple {5164#true} {5208#(<= main_~j~0 4)} #73#return; {5208#(<= main_~j~0 4)} is VALID [2020-07-18 06:38:05,040 INFO L280 TraceCheckUtils]: 81: Hoare triple {5208#(<= main_~j~0 4)} #t~post2 := ~j~0; {5217#(<= |main_#t~post2| 4)} is VALID [2020-07-18 06:38:05,041 INFO L280 TraceCheckUtils]: 82: Hoare triple {5217#(<= |main_#t~post2| 4)} ~j~0 := 1 + #t~post2; {5218#(<= main_~j~0 5)} is VALID [2020-07-18 06:38:05,041 INFO L280 TraceCheckUtils]: 83: Hoare triple {5218#(<= main_~j~0 5)} havoc #t~post2; {5218#(<= main_~j~0 5)} is VALID [2020-07-18 06:38:05,042 INFO L280 TraceCheckUtils]: 84: Hoare triple {5218#(<= main_~j~0 5)} assume !!(~j~0 < 8); {5218#(<= main_~j~0 5)} is VALID [2020-07-18 06:38:05,042 INFO L263 TraceCheckUtils]: 85: Hoare triple {5218#(<= main_~j~0 5)} call __VERIFIER_assert((if 0 <= ~nlen~0 - 1 - ~i~0 then 1 else 0)); {5164#true} is VALID [2020-07-18 06:38:05,042 INFO L280 TraceCheckUtils]: 86: Hoare triple {5164#true} ~cond := #in~cond; {5164#true} is VALID [2020-07-18 06:38:05,042 INFO L280 TraceCheckUtils]: 87: Hoare triple {5164#true} assume !(0 == ~cond); {5164#true} is VALID [2020-07-18 06:38:05,042 INFO L280 TraceCheckUtils]: 88: Hoare triple {5164#true} assume true; {5164#true} is VALID [2020-07-18 06:38:05,043 INFO L275 TraceCheckUtils]: 89: Hoare quadruple {5164#true} {5218#(<= main_~j~0 5)} #71#return; {5218#(<= main_~j~0 5)} is VALID [2020-07-18 06:38:05,043 INFO L263 TraceCheckUtils]: 90: Hoare triple {5218#(<= main_~j~0 5)} call __VERIFIER_assert((if ~nlen~0 - 1 - ~i~0 < ~nlen~0 then 1 else 0)); {5164#true} is VALID [2020-07-18 06:38:05,043 INFO L280 TraceCheckUtils]: 91: Hoare triple {5164#true} ~cond := #in~cond; {5164#true} is VALID [2020-07-18 06:38:05,044 INFO L280 TraceCheckUtils]: 92: Hoare triple {5164#true} assume !(0 == ~cond); {5164#true} is VALID [2020-07-18 06:38:05,044 INFO L280 TraceCheckUtils]: 93: Hoare triple {5164#true} assume true; {5164#true} is VALID [2020-07-18 06:38:05,044 INFO L275 TraceCheckUtils]: 94: Hoare quadruple {5164#true} {5218#(<= main_~j~0 5)} #73#return; {5218#(<= main_~j~0 5)} is VALID [2020-07-18 06:38:05,045 INFO L280 TraceCheckUtils]: 95: Hoare triple {5218#(<= main_~j~0 5)} #t~post2 := ~j~0; {5227#(<= |main_#t~post2| 5)} is VALID [2020-07-18 06:38:05,046 INFO L280 TraceCheckUtils]: 96: Hoare triple {5227#(<= |main_#t~post2| 5)} ~j~0 := 1 + #t~post2; {5228#(<= main_~j~0 6)} is VALID [2020-07-18 06:38:05,046 INFO L280 TraceCheckUtils]: 97: Hoare triple {5228#(<= main_~j~0 6)} havoc #t~post2; {5228#(<= main_~j~0 6)} is VALID [2020-07-18 06:38:05,047 INFO L280 TraceCheckUtils]: 98: Hoare triple {5228#(<= main_~j~0 6)} assume !!(~j~0 < 8); {5228#(<= main_~j~0 6)} is VALID [2020-07-18 06:38:05,047 INFO L263 TraceCheckUtils]: 99: Hoare triple {5228#(<= main_~j~0 6)} call __VERIFIER_assert((if 0 <= ~nlen~0 - 1 - ~i~0 then 1 else 0)); {5164#true} is VALID [2020-07-18 06:38:05,047 INFO L280 TraceCheckUtils]: 100: Hoare triple {5164#true} ~cond := #in~cond; {5164#true} is VALID [2020-07-18 06:38:05,047 INFO L280 TraceCheckUtils]: 101: Hoare triple {5164#true} assume !(0 == ~cond); {5164#true} is VALID [2020-07-18 06:38:05,047 INFO L280 TraceCheckUtils]: 102: Hoare triple {5164#true} assume true; {5164#true} is VALID [2020-07-18 06:38:05,048 INFO L275 TraceCheckUtils]: 103: Hoare quadruple {5164#true} {5228#(<= main_~j~0 6)} #71#return; {5228#(<= main_~j~0 6)} is VALID [2020-07-18 06:38:05,048 INFO L263 TraceCheckUtils]: 104: Hoare triple {5228#(<= main_~j~0 6)} call __VERIFIER_assert((if ~nlen~0 - 1 - ~i~0 < ~nlen~0 then 1 else 0)); {5164#true} is VALID [2020-07-18 06:38:05,049 INFO L280 TraceCheckUtils]: 105: Hoare triple {5164#true} ~cond := #in~cond; {5164#true} is VALID [2020-07-18 06:38:05,049 INFO L280 TraceCheckUtils]: 106: Hoare triple {5164#true} assume !(0 == ~cond); {5164#true} is VALID [2020-07-18 06:38:05,049 INFO L280 TraceCheckUtils]: 107: Hoare triple {5164#true} assume true; {5164#true} is VALID [2020-07-18 06:38:05,050 INFO L275 TraceCheckUtils]: 108: Hoare quadruple {5164#true} {5228#(<= main_~j~0 6)} #73#return; {5228#(<= main_~j~0 6)} is VALID [2020-07-18 06:38:05,050 INFO L280 TraceCheckUtils]: 109: Hoare triple {5228#(<= main_~j~0 6)} #t~post2 := ~j~0; {5237#(<= |main_#t~post2| 6)} is VALID [2020-07-18 06:38:05,051 INFO L280 TraceCheckUtils]: 110: Hoare triple {5237#(<= |main_#t~post2| 6)} ~j~0 := 1 + #t~post2; {5238#(<= main_~j~0 7)} is VALID [2020-07-18 06:38:05,051 INFO L280 TraceCheckUtils]: 111: Hoare triple {5238#(<= main_~j~0 7)} havoc #t~post2; {5238#(<= main_~j~0 7)} is VALID [2020-07-18 06:38:05,052 INFO L280 TraceCheckUtils]: 112: Hoare triple {5238#(<= main_~j~0 7)} assume !(~j~0 < 8); {5165#false} is VALID [2020-07-18 06:38:05,052 INFO L280 TraceCheckUtils]: 113: Hoare triple {5165#false} #t~post1 := ~i~0; {5165#false} is VALID [2020-07-18 06:38:05,052 INFO L280 TraceCheckUtils]: 114: Hoare triple {5165#false} ~i~0 := 1 + #t~post1; {5165#false} is VALID [2020-07-18 06:38:05,052 INFO L280 TraceCheckUtils]: 115: Hoare triple {5165#false} havoc #t~post1; {5165#false} is VALID [2020-07-18 06:38:05,053 INFO L280 TraceCheckUtils]: 116: Hoare triple {5165#false} assume !!(~i~0 < ~nlen~0); {5165#false} is VALID [2020-07-18 06:38:05,053 INFO L280 TraceCheckUtils]: 117: Hoare triple {5165#false} ~j~0 := 0; {5165#false} is VALID [2020-07-18 06:38:05,053 INFO L280 TraceCheckUtils]: 118: Hoare triple {5165#false} assume !!(~j~0 < 8); {5165#false} is VALID [2020-07-18 06:38:05,053 INFO L263 TraceCheckUtils]: 119: Hoare triple {5165#false} call __VERIFIER_assert((if 0 <= ~nlen~0 - 1 - ~i~0 then 1 else 0)); {5164#true} is VALID [2020-07-18 06:38:05,053 INFO L280 TraceCheckUtils]: 120: Hoare triple {5164#true} ~cond := #in~cond; {5164#true} is VALID [2020-07-18 06:38:05,053 INFO L280 TraceCheckUtils]: 121: Hoare triple {5164#true} assume !(0 == ~cond); {5164#true} is VALID [2020-07-18 06:38:05,054 INFO L280 TraceCheckUtils]: 122: Hoare triple {5164#true} assume true; {5164#true} is VALID [2020-07-18 06:38:05,054 INFO L275 TraceCheckUtils]: 123: Hoare quadruple {5164#true} {5165#false} #71#return; {5165#false} is VALID [2020-07-18 06:38:05,054 INFO L263 TraceCheckUtils]: 124: Hoare triple {5165#false} call __VERIFIER_assert((if ~nlen~0 - 1 - ~i~0 < ~nlen~0 then 1 else 0)); {5165#false} is VALID [2020-07-18 06:38:05,054 INFO L280 TraceCheckUtils]: 125: Hoare triple {5165#false} ~cond := #in~cond; {5165#false} is VALID [2020-07-18 06:38:05,054 INFO L280 TraceCheckUtils]: 126: Hoare triple {5165#false} assume 0 == ~cond; {5165#false} is VALID [2020-07-18 06:38:05,055 INFO L280 TraceCheckUtils]: 127: Hoare triple {5165#false} assume !false; {5165#false} is VALID [2020-07-18 06:38:05,065 INFO L134 CoverageAnalysis]: Checked inductivity of 607 backedges. 54 proven. 133 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2020-07-18 06:38:05,065 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [960883682] [2020-07-18 06:38:05,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-18 06:38:05,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-07-18 06:38:05,066 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957009497] [2020-07-18 06:38:05,066 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 128 [2020-07-18 06:38:05,067 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-18 06:38:05,067 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 17 states. [2020-07-18 06:38:05,171 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 86 edges. 86 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 06:38:05,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-07-18 06:38:05,172 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-18 06:38:05,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-07-18 06:38:05,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-07-18 06:38:05,173 INFO L87 Difference]: Start difference. First operand 119 states and 146 transitions. Second operand 17 states. [2020-07-18 06:38:06,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 06:38:06,027 INFO L93 Difference]: Finished difference Result 189 states and 235 transitions. [2020-07-18 06:38:06,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-07-18 06:38:06,027 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 128 [2020-07-18 06:38:06,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-18 06:38:06,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-07-18 06:38:06,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 108 transitions. [2020-07-18 06:38:06,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-07-18 06:38:06,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 108 transitions. [2020-07-18 06:38:06,033 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 24 states and 108 transitions. [2020-07-18 06:38:06,138 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 108 edges. 108 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 06:38:06,145 INFO L225 Difference]: With dead ends: 189 [2020-07-18 06:38:06,145 INFO L226 Difference]: Without dead ends: 131 [2020-07-18 06:38:06,149 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=318, Invalid=612, Unknown=0, NotChecked=0, Total=930 [2020-07-18 06:38:06,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-07-18 06:38:06,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2020-07-18 06:38:06,443 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-18 06:38:06,443 INFO L82 GeneralOperation]: Start isEquivalent. First operand 131 states. Second operand 131 states. [2020-07-18 06:38:06,443 INFO L74 IsIncluded]: Start isIncluded. First operand 131 states. Second operand 131 states. [2020-07-18 06:38:06,444 INFO L87 Difference]: Start difference. First operand 131 states. Second operand 131 states. [2020-07-18 06:38:06,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 06:38:06,449 INFO L93 Difference]: Finished difference Result 131 states and 162 transitions. [2020-07-18 06:38:06,449 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 162 transitions. [2020-07-18 06:38:06,450 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 06:38:06,450 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 06:38:06,450 INFO L74 IsIncluded]: Start isIncluded. First operand 131 states. Second operand 131 states. [2020-07-18 06:38:06,451 INFO L87 Difference]: Start difference. First operand 131 states. Second operand 131 states. [2020-07-18 06:38:06,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 06:38:06,455 INFO L93 Difference]: Finished difference Result 131 states and 162 transitions. [2020-07-18 06:38:06,456 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 162 transitions. [2020-07-18 06:38:06,456 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 06:38:06,456 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 06:38:06,456 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-18 06:38:06,457 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-18 06:38:06,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-07-18 06:38:06,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 162 transitions. [2020-07-18 06:38:06,461 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 162 transitions. Word has length 128 [2020-07-18 06:38:06,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-18 06:38:06,462 INFO L479 AbstractCegarLoop]: Abstraction has 131 states and 162 transitions. [2020-07-18 06:38:06,462 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-07-18 06:38:06,462 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 131 states and 162 transitions. [2020-07-18 06:38:06,682 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 162 edges. 162 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 06:38:06,683 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 162 transitions. [2020-07-18 06:38:06,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-07-18 06:38:06,685 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 06:38:06,685 INFO L422 BasicCegarLoop]: trace histogram [18, 17, 17, 9, 9, 9, 9, 8, 8, 8, 8, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-18 06:38:06,685 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-07-18 06:38:06,685 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 06:38:06,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 06:38:06,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1386163675, now seen corresponding path program 8 times [2020-07-18 06:38:06,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 06:38:06,686 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [761926116] [2020-07-18 06:38:06,686 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 06:38:06,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:38:06,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:38:06,801 INFO L280 TraceCheckUtils]: 0: Hoare triple {6175#true} assume true; {6175#true} is VALID [2020-07-18 06:38:06,801 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {6175#true} {6175#true} #67#return; {6175#true} is VALID [2020-07-18 06:38:06,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:38:06,805 INFO L280 TraceCheckUtils]: 0: Hoare triple {6175#true} ~cond := #in~cond; {6175#true} is VALID [2020-07-18 06:38:06,806 INFO L280 TraceCheckUtils]: 1: Hoare triple {6175#true} assume !(0 == ~cond); {6175#true} is VALID [2020-07-18 06:38:06,806 INFO L280 TraceCheckUtils]: 2: Hoare triple {6175#true} assume true; {6175#true} is VALID [2020-07-18 06:38:06,807 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {6175#true} {6179#(<= 0 main_~i~0)} #71#return; {6179#(<= 0 main_~i~0)} is VALID [2020-07-18 06:38:06,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:38:06,810 INFO L280 TraceCheckUtils]: 0: Hoare triple {6175#true} ~cond := #in~cond; {6175#true} is VALID [2020-07-18 06:38:06,810 INFO L280 TraceCheckUtils]: 1: Hoare triple {6175#true} assume !(0 == ~cond); {6175#true} is VALID [2020-07-18 06:38:06,811 INFO L280 TraceCheckUtils]: 2: Hoare triple {6175#true} assume true; {6175#true} is VALID [2020-07-18 06:38:06,811 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {6175#true} {6179#(<= 0 main_~i~0)} #73#return; {6179#(<= 0 main_~i~0)} is VALID [2020-07-18 06:38:06,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:38:06,815 INFO L280 TraceCheckUtils]: 0: Hoare triple {6175#true} ~cond := #in~cond; {6175#true} is VALID [2020-07-18 06:38:06,816 INFO L280 TraceCheckUtils]: 1: Hoare triple {6175#true} assume !(0 == ~cond); {6175#true} is VALID [2020-07-18 06:38:06,816 INFO L280 TraceCheckUtils]: 2: Hoare triple {6175#true} assume true; {6175#true} is VALID [2020-07-18 06:38:06,817 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {6175#true} {6179#(<= 0 main_~i~0)} #71#return; {6179#(<= 0 main_~i~0)} is VALID [2020-07-18 06:38:06,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:38:06,820 INFO L280 TraceCheckUtils]: 0: Hoare triple {6175#true} ~cond := #in~cond; {6175#true} is VALID [2020-07-18 06:38:06,820 INFO L280 TraceCheckUtils]: 1: Hoare triple {6175#true} assume !(0 == ~cond); {6175#true} is VALID [2020-07-18 06:38:06,821 INFO L280 TraceCheckUtils]: 2: Hoare triple {6175#true} assume true; {6175#true} is VALID [2020-07-18 06:38:06,821 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {6175#true} {6179#(<= 0 main_~i~0)} #73#return; {6179#(<= 0 main_~i~0)} is VALID [2020-07-18 06:38:06,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:38:06,825 INFO L280 TraceCheckUtils]: 0: Hoare triple {6175#true} ~cond := #in~cond; {6175#true} is VALID [2020-07-18 06:38:06,825 INFO L280 TraceCheckUtils]: 1: Hoare triple {6175#true} assume !(0 == ~cond); {6175#true} is VALID [2020-07-18 06:38:06,826 INFO L280 TraceCheckUtils]: 2: Hoare triple {6175#true} assume true; {6175#true} is VALID [2020-07-18 06:38:06,826 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {6175#true} {6179#(<= 0 main_~i~0)} #71#return; {6179#(<= 0 main_~i~0)} is VALID [2020-07-18 06:38:06,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:38:06,830 INFO L280 TraceCheckUtils]: 0: Hoare triple {6175#true} ~cond := #in~cond; {6175#true} is VALID [2020-07-18 06:38:06,830 INFO L280 TraceCheckUtils]: 1: Hoare triple {6175#true} assume !(0 == ~cond); {6175#true} is VALID [2020-07-18 06:38:06,830 INFO L280 TraceCheckUtils]: 2: Hoare triple {6175#true} assume true; {6175#true} is VALID [2020-07-18 06:38:06,831 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {6175#true} {6179#(<= 0 main_~i~0)} #73#return; {6179#(<= 0 main_~i~0)} is VALID [2020-07-18 06:38:06,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:38:06,852 INFO L280 TraceCheckUtils]: 0: Hoare triple {6175#true} ~cond := #in~cond; {6175#true} is VALID [2020-07-18 06:38:06,852 INFO L280 TraceCheckUtils]: 1: Hoare triple {6175#true} assume !(0 == ~cond); {6175#true} is VALID [2020-07-18 06:38:06,852 INFO L280 TraceCheckUtils]: 2: Hoare triple {6175#true} assume true; {6175#true} is VALID [2020-07-18 06:38:06,853 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {6175#true} {6179#(<= 0 main_~i~0)} #71#return; {6179#(<= 0 main_~i~0)} is VALID [2020-07-18 06:38:06,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:38:06,856 INFO L280 TraceCheckUtils]: 0: Hoare triple {6175#true} ~cond := #in~cond; {6175#true} is VALID [2020-07-18 06:38:06,857 INFO L280 TraceCheckUtils]: 1: Hoare triple {6175#true} assume !(0 == ~cond); {6175#true} is VALID [2020-07-18 06:38:06,857 INFO L280 TraceCheckUtils]: 2: Hoare triple {6175#true} assume true; {6175#true} is VALID [2020-07-18 06:38:06,857 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {6175#true} {6179#(<= 0 main_~i~0)} #73#return; {6179#(<= 0 main_~i~0)} is VALID [2020-07-18 06:38:06,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:38:06,863 INFO L280 TraceCheckUtils]: 0: Hoare triple {6175#true} ~cond := #in~cond; {6175#true} is VALID [2020-07-18 06:38:06,863 INFO L280 TraceCheckUtils]: 1: Hoare triple {6175#true} assume !(0 == ~cond); {6175#true} is VALID [2020-07-18 06:38:06,863 INFO L280 TraceCheckUtils]: 2: Hoare triple {6175#true} assume true; {6175#true} is VALID [2020-07-18 06:38:06,865 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {6175#true} {6179#(<= 0 main_~i~0)} #71#return; {6179#(<= 0 main_~i~0)} is VALID [2020-07-18 06:38:06,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:38:06,871 INFO L280 TraceCheckUtils]: 0: Hoare triple {6175#true} ~cond := #in~cond; {6175#true} is VALID [2020-07-18 06:38:06,871 INFO L280 TraceCheckUtils]: 1: Hoare triple {6175#true} assume !(0 == ~cond); {6175#true} is VALID [2020-07-18 06:38:06,872 INFO L280 TraceCheckUtils]: 2: Hoare triple {6175#true} assume true; {6175#true} is VALID [2020-07-18 06:38:06,873 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {6175#true} {6179#(<= 0 main_~i~0)} #73#return; {6179#(<= 0 main_~i~0)} is VALID [2020-07-18 06:38:06,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:38:06,877 INFO L280 TraceCheckUtils]: 0: Hoare triple {6175#true} ~cond := #in~cond; {6175#true} is VALID [2020-07-18 06:38:06,878 INFO L280 TraceCheckUtils]: 1: Hoare triple {6175#true} assume !(0 == ~cond); {6175#true} is VALID [2020-07-18 06:38:06,878 INFO L280 TraceCheckUtils]: 2: Hoare triple {6175#true} assume true; {6175#true} is VALID [2020-07-18 06:38:06,879 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {6175#true} {6179#(<= 0 main_~i~0)} #71#return; {6179#(<= 0 main_~i~0)} is VALID [2020-07-18 06:38:06,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:38:06,883 INFO L280 TraceCheckUtils]: 0: Hoare triple {6175#true} ~cond := #in~cond; {6175#true} is VALID [2020-07-18 06:38:06,884 INFO L280 TraceCheckUtils]: 1: Hoare triple {6175#true} assume !(0 == ~cond); {6175#true} is VALID [2020-07-18 06:38:06,884 INFO L280 TraceCheckUtils]: 2: Hoare triple {6175#true} assume true; {6175#true} is VALID [2020-07-18 06:38:06,885 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {6175#true} {6179#(<= 0 main_~i~0)} #73#return; {6179#(<= 0 main_~i~0)} is VALID [2020-07-18 06:38:06,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:38:06,889 INFO L280 TraceCheckUtils]: 0: Hoare triple {6175#true} ~cond := #in~cond; {6175#true} is VALID [2020-07-18 06:38:06,890 INFO L280 TraceCheckUtils]: 1: Hoare triple {6175#true} assume !(0 == ~cond); {6175#true} is VALID [2020-07-18 06:38:06,890 INFO L280 TraceCheckUtils]: 2: Hoare triple {6175#true} assume true; {6175#true} is VALID [2020-07-18 06:38:06,894 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {6175#true} {6179#(<= 0 main_~i~0)} #71#return; {6179#(<= 0 main_~i~0)} is VALID [2020-07-18 06:38:06,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:38:06,897 INFO L280 TraceCheckUtils]: 0: Hoare triple {6175#true} ~cond := #in~cond; {6175#true} is VALID [2020-07-18 06:38:06,898 INFO L280 TraceCheckUtils]: 1: Hoare triple {6175#true} assume !(0 == ~cond); {6175#true} is VALID [2020-07-18 06:38:06,898 INFO L280 TraceCheckUtils]: 2: Hoare triple {6175#true} assume true; {6175#true} is VALID [2020-07-18 06:38:06,898 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {6175#true} {6179#(<= 0 main_~i~0)} #73#return; {6179#(<= 0 main_~i~0)} is VALID [2020-07-18 06:38:06,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:38:06,903 INFO L280 TraceCheckUtils]: 0: Hoare triple {6175#true} ~cond := #in~cond; {6175#true} is VALID [2020-07-18 06:38:06,903 INFO L280 TraceCheckUtils]: 1: Hoare triple {6175#true} assume !(0 == ~cond); {6175#true} is VALID [2020-07-18 06:38:06,904 INFO L280 TraceCheckUtils]: 2: Hoare triple {6175#true} assume true; {6175#true} is VALID [2020-07-18 06:38:06,904 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {6175#true} {6179#(<= 0 main_~i~0)} #71#return; {6179#(<= 0 main_~i~0)} is VALID [2020-07-18 06:38:06,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:38:06,913 INFO L280 TraceCheckUtils]: 0: Hoare triple {6175#true} ~cond := #in~cond; {6175#true} is VALID [2020-07-18 06:38:06,914 INFO L280 TraceCheckUtils]: 1: Hoare triple {6175#true} assume !(0 == ~cond); {6175#true} is VALID [2020-07-18 06:38:06,914 INFO L280 TraceCheckUtils]: 2: Hoare triple {6175#true} assume true; {6175#true} is VALID [2020-07-18 06:38:06,915 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {6175#true} {6179#(<= 0 main_~i~0)} #73#return; {6179#(<= 0 main_~i~0)} is VALID [2020-07-18 06:38:06,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:38:06,922 INFO L280 TraceCheckUtils]: 0: Hoare triple {6175#true} ~cond := #in~cond; {6175#true} is VALID [2020-07-18 06:38:06,922 INFO L280 TraceCheckUtils]: 1: Hoare triple {6175#true} assume !(0 == ~cond); {6175#true} is VALID [2020-07-18 06:38:06,923 INFO L280 TraceCheckUtils]: 2: Hoare triple {6175#true} assume true; {6175#true} is VALID [2020-07-18 06:38:06,924 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {6175#true} {6245#(<= 1 main_~i~0)} #71#return; {6245#(<= 1 main_~i~0)} is VALID [2020-07-18 06:38:06,924 INFO L263 TraceCheckUtils]: 0: Hoare triple {6175#true} call ULTIMATE.init(); {6175#true} is VALID [2020-07-18 06:38:06,924 INFO L280 TraceCheckUtils]: 1: Hoare triple {6175#true} assume true; {6175#true} is VALID [2020-07-18 06:38:06,925 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {6175#true} {6175#true} #67#return; {6175#true} is VALID [2020-07-18 06:38:06,925 INFO L263 TraceCheckUtils]: 3: Hoare triple {6175#true} call #t~ret3 := main(); {6175#true} is VALID [2020-07-18 06:38:06,925 INFO L280 TraceCheckUtils]: 4: Hoare triple {6175#true} havoc ~offset~0; {6175#true} is VALID [2020-07-18 06:38:06,925 INFO L280 TraceCheckUtils]: 5: Hoare triple {6175#true} havoc ~length~0; {6175#true} is VALID [2020-07-18 06:38:06,926 INFO L280 TraceCheckUtils]: 6: Hoare triple {6175#true} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; {6175#true} is VALID [2020-07-18 06:38:06,926 INFO L280 TraceCheckUtils]: 7: Hoare triple {6175#true} ~nlen~0 := #t~nondet0; {6175#true} is VALID [2020-07-18 06:38:06,926 INFO L280 TraceCheckUtils]: 8: Hoare triple {6175#true} havoc #t~nondet0; {6175#true} is VALID [2020-07-18 06:38:06,927 INFO L280 TraceCheckUtils]: 9: Hoare triple {6175#true} havoc ~i~0; {6175#true} is VALID [2020-07-18 06:38:06,927 INFO L280 TraceCheckUtils]: 10: Hoare triple {6175#true} havoc ~j~0; {6175#true} is VALID [2020-07-18 06:38:06,928 INFO L280 TraceCheckUtils]: 11: Hoare triple {6175#true} ~i~0 := 0; {6179#(<= 0 main_~i~0)} is VALID [2020-07-18 06:38:06,928 INFO L280 TraceCheckUtils]: 12: Hoare triple {6179#(<= 0 main_~i~0)} assume !!(~i~0 < ~nlen~0); {6179#(<= 0 main_~i~0)} is VALID [2020-07-18 06:38:06,929 INFO L280 TraceCheckUtils]: 13: Hoare triple {6179#(<= 0 main_~i~0)} ~j~0 := 0; {6179#(<= 0 main_~i~0)} is VALID [2020-07-18 06:38:06,929 INFO L280 TraceCheckUtils]: 14: Hoare triple {6179#(<= 0 main_~i~0)} assume !!(~j~0 < 8); {6179#(<= 0 main_~i~0)} is VALID [2020-07-18 06:38:06,930 INFO L263 TraceCheckUtils]: 15: Hoare triple {6179#(<= 0 main_~i~0)} call __VERIFIER_assert((if 0 <= ~nlen~0 - 1 - ~i~0 then 1 else 0)); {6175#true} is VALID [2020-07-18 06:38:06,930 INFO L280 TraceCheckUtils]: 16: Hoare triple {6175#true} ~cond := #in~cond; {6175#true} is VALID [2020-07-18 06:38:06,930 INFO L280 TraceCheckUtils]: 17: Hoare triple {6175#true} assume !(0 == ~cond); {6175#true} is VALID [2020-07-18 06:38:06,930 INFO L280 TraceCheckUtils]: 18: Hoare triple {6175#true} assume true; {6175#true} is VALID [2020-07-18 06:38:06,931 INFO L275 TraceCheckUtils]: 19: Hoare quadruple {6175#true} {6179#(<= 0 main_~i~0)} #71#return; {6179#(<= 0 main_~i~0)} is VALID [2020-07-18 06:38:06,931 INFO L263 TraceCheckUtils]: 20: Hoare triple {6179#(<= 0 main_~i~0)} call __VERIFIER_assert((if ~nlen~0 - 1 - ~i~0 < ~nlen~0 then 1 else 0)); {6175#true} is VALID [2020-07-18 06:38:06,931 INFO L280 TraceCheckUtils]: 21: Hoare triple {6175#true} ~cond := #in~cond; {6175#true} is VALID [2020-07-18 06:38:06,931 INFO L280 TraceCheckUtils]: 22: Hoare triple {6175#true} assume !(0 == ~cond); {6175#true} is VALID [2020-07-18 06:38:06,932 INFO L280 TraceCheckUtils]: 23: Hoare triple {6175#true} assume true; {6175#true} is VALID [2020-07-18 06:38:06,932 INFO L275 TraceCheckUtils]: 24: Hoare quadruple {6175#true} {6179#(<= 0 main_~i~0)} #73#return; {6179#(<= 0 main_~i~0)} is VALID [2020-07-18 06:38:06,933 INFO L280 TraceCheckUtils]: 25: Hoare triple {6179#(<= 0 main_~i~0)} #t~post2 := ~j~0; {6179#(<= 0 main_~i~0)} is VALID [2020-07-18 06:38:06,933 INFO L280 TraceCheckUtils]: 26: Hoare triple {6179#(<= 0 main_~i~0)} ~j~0 := 1 + #t~post2; {6179#(<= 0 main_~i~0)} is VALID [2020-07-18 06:38:06,934 INFO L280 TraceCheckUtils]: 27: Hoare triple {6179#(<= 0 main_~i~0)} havoc #t~post2; {6179#(<= 0 main_~i~0)} is VALID [2020-07-18 06:38:06,934 INFO L280 TraceCheckUtils]: 28: Hoare triple {6179#(<= 0 main_~i~0)} assume !!(~j~0 < 8); {6179#(<= 0 main_~i~0)} is VALID [2020-07-18 06:38:06,934 INFO L263 TraceCheckUtils]: 29: Hoare triple {6179#(<= 0 main_~i~0)} call __VERIFIER_assert((if 0 <= ~nlen~0 - 1 - ~i~0 then 1 else 0)); {6175#true} is VALID [2020-07-18 06:38:06,935 INFO L280 TraceCheckUtils]: 30: Hoare triple {6175#true} ~cond := #in~cond; {6175#true} is VALID [2020-07-18 06:38:06,935 INFO L280 TraceCheckUtils]: 31: Hoare triple {6175#true} assume !(0 == ~cond); {6175#true} is VALID [2020-07-18 06:38:06,935 INFO L280 TraceCheckUtils]: 32: Hoare triple {6175#true} assume true; {6175#true} is VALID [2020-07-18 06:38:06,936 INFO L275 TraceCheckUtils]: 33: Hoare quadruple {6175#true} {6179#(<= 0 main_~i~0)} #71#return; {6179#(<= 0 main_~i~0)} is VALID [2020-07-18 06:38:06,936 INFO L263 TraceCheckUtils]: 34: Hoare triple {6179#(<= 0 main_~i~0)} call __VERIFIER_assert((if ~nlen~0 - 1 - ~i~0 < ~nlen~0 then 1 else 0)); {6175#true} is VALID [2020-07-18 06:38:06,937 INFO L280 TraceCheckUtils]: 35: Hoare triple {6175#true} ~cond := #in~cond; {6175#true} is VALID [2020-07-18 06:38:06,937 INFO L280 TraceCheckUtils]: 36: Hoare triple {6175#true} assume !(0 == ~cond); {6175#true} is VALID [2020-07-18 06:38:06,937 INFO L280 TraceCheckUtils]: 37: Hoare triple {6175#true} assume true; {6175#true} is VALID [2020-07-18 06:38:06,938 INFO L275 TraceCheckUtils]: 38: Hoare quadruple {6175#true} {6179#(<= 0 main_~i~0)} #73#return; {6179#(<= 0 main_~i~0)} is VALID [2020-07-18 06:38:06,939 INFO L280 TraceCheckUtils]: 39: Hoare triple {6179#(<= 0 main_~i~0)} #t~post2 := ~j~0; {6179#(<= 0 main_~i~0)} is VALID [2020-07-18 06:38:06,941 INFO L280 TraceCheckUtils]: 40: Hoare triple {6179#(<= 0 main_~i~0)} ~j~0 := 1 + #t~post2; {6179#(<= 0 main_~i~0)} is VALID [2020-07-18 06:38:06,941 INFO L280 TraceCheckUtils]: 41: Hoare triple {6179#(<= 0 main_~i~0)} havoc #t~post2; {6179#(<= 0 main_~i~0)} is VALID [2020-07-18 06:38:06,942 INFO L280 TraceCheckUtils]: 42: Hoare triple {6179#(<= 0 main_~i~0)} assume !!(~j~0 < 8); {6179#(<= 0 main_~i~0)} is VALID [2020-07-18 06:38:06,942 INFO L263 TraceCheckUtils]: 43: Hoare triple {6179#(<= 0 main_~i~0)} call __VERIFIER_assert((if 0 <= ~nlen~0 - 1 - ~i~0 then 1 else 0)); {6175#true} is VALID [2020-07-18 06:38:06,943 INFO L280 TraceCheckUtils]: 44: Hoare triple {6175#true} ~cond := #in~cond; {6175#true} is VALID [2020-07-18 06:38:06,943 INFO L280 TraceCheckUtils]: 45: Hoare triple {6175#true} assume !(0 == ~cond); {6175#true} is VALID [2020-07-18 06:38:06,943 INFO L280 TraceCheckUtils]: 46: Hoare triple {6175#true} assume true; {6175#true} is VALID [2020-07-18 06:38:06,944 INFO L275 TraceCheckUtils]: 47: Hoare quadruple {6175#true} {6179#(<= 0 main_~i~0)} #71#return; {6179#(<= 0 main_~i~0)} is VALID [2020-07-18 06:38:06,944 INFO L263 TraceCheckUtils]: 48: Hoare triple {6179#(<= 0 main_~i~0)} call __VERIFIER_assert((if ~nlen~0 - 1 - ~i~0 < ~nlen~0 then 1 else 0)); {6175#true} is VALID [2020-07-18 06:38:06,945 INFO L280 TraceCheckUtils]: 49: Hoare triple {6175#true} ~cond := #in~cond; {6175#true} is VALID [2020-07-18 06:38:06,945 INFO L280 TraceCheckUtils]: 50: Hoare triple {6175#true} assume !(0 == ~cond); {6175#true} is VALID [2020-07-18 06:38:06,945 INFO L280 TraceCheckUtils]: 51: Hoare triple {6175#true} assume true; {6175#true} is VALID [2020-07-18 06:38:06,946 INFO L275 TraceCheckUtils]: 52: Hoare quadruple {6175#true} {6179#(<= 0 main_~i~0)} #73#return; {6179#(<= 0 main_~i~0)} is VALID [2020-07-18 06:38:06,947 INFO L280 TraceCheckUtils]: 53: Hoare triple {6179#(<= 0 main_~i~0)} #t~post2 := ~j~0; {6179#(<= 0 main_~i~0)} is VALID [2020-07-18 06:38:06,947 INFO L280 TraceCheckUtils]: 54: Hoare triple {6179#(<= 0 main_~i~0)} ~j~0 := 1 + #t~post2; {6179#(<= 0 main_~i~0)} is VALID [2020-07-18 06:38:06,948 INFO L280 TraceCheckUtils]: 55: Hoare triple {6179#(<= 0 main_~i~0)} havoc #t~post2; {6179#(<= 0 main_~i~0)} is VALID [2020-07-18 06:38:06,949 INFO L280 TraceCheckUtils]: 56: Hoare triple {6179#(<= 0 main_~i~0)} assume !!(~j~0 < 8); {6179#(<= 0 main_~i~0)} is VALID [2020-07-18 06:38:06,949 INFO L263 TraceCheckUtils]: 57: Hoare triple {6179#(<= 0 main_~i~0)} call __VERIFIER_assert((if 0 <= ~nlen~0 - 1 - ~i~0 then 1 else 0)); {6175#true} is VALID [2020-07-18 06:38:06,949 INFO L280 TraceCheckUtils]: 58: Hoare triple {6175#true} ~cond := #in~cond; {6175#true} is VALID [2020-07-18 06:38:06,950 INFO L280 TraceCheckUtils]: 59: Hoare triple {6175#true} assume !(0 == ~cond); {6175#true} is VALID [2020-07-18 06:38:06,950 INFO L280 TraceCheckUtils]: 60: Hoare triple {6175#true} assume true; {6175#true} is VALID [2020-07-18 06:38:06,951 INFO L275 TraceCheckUtils]: 61: Hoare quadruple {6175#true} {6179#(<= 0 main_~i~0)} #71#return; {6179#(<= 0 main_~i~0)} is VALID [2020-07-18 06:38:06,951 INFO L263 TraceCheckUtils]: 62: Hoare triple {6179#(<= 0 main_~i~0)} call __VERIFIER_assert((if ~nlen~0 - 1 - ~i~0 < ~nlen~0 then 1 else 0)); {6175#true} is VALID [2020-07-18 06:38:06,952 INFO L280 TraceCheckUtils]: 63: Hoare triple {6175#true} ~cond := #in~cond; {6175#true} is VALID [2020-07-18 06:38:06,952 INFO L280 TraceCheckUtils]: 64: Hoare triple {6175#true} assume !(0 == ~cond); {6175#true} is VALID [2020-07-18 06:38:06,952 INFO L280 TraceCheckUtils]: 65: Hoare triple {6175#true} assume true; {6175#true} is VALID [2020-07-18 06:38:06,953 INFO L275 TraceCheckUtils]: 66: Hoare quadruple {6175#true} {6179#(<= 0 main_~i~0)} #73#return; {6179#(<= 0 main_~i~0)} is VALID [2020-07-18 06:38:06,954 INFO L280 TraceCheckUtils]: 67: Hoare triple {6179#(<= 0 main_~i~0)} #t~post2 := ~j~0; {6179#(<= 0 main_~i~0)} is VALID [2020-07-18 06:38:06,954 INFO L280 TraceCheckUtils]: 68: Hoare triple {6179#(<= 0 main_~i~0)} ~j~0 := 1 + #t~post2; {6179#(<= 0 main_~i~0)} is VALID [2020-07-18 06:38:06,955 INFO L280 TraceCheckUtils]: 69: Hoare triple {6179#(<= 0 main_~i~0)} havoc #t~post2; {6179#(<= 0 main_~i~0)} is VALID [2020-07-18 06:38:06,956 INFO L280 TraceCheckUtils]: 70: Hoare triple {6179#(<= 0 main_~i~0)} assume !!(~j~0 < 8); {6179#(<= 0 main_~i~0)} is VALID [2020-07-18 06:38:06,956 INFO L263 TraceCheckUtils]: 71: Hoare triple {6179#(<= 0 main_~i~0)} call __VERIFIER_assert((if 0 <= ~nlen~0 - 1 - ~i~0 then 1 else 0)); {6175#true} is VALID [2020-07-18 06:38:06,956 INFO L280 TraceCheckUtils]: 72: Hoare triple {6175#true} ~cond := #in~cond; {6175#true} is VALID [2020-07-18 06:38:06,957 INFO L280 TraceCheckUtils]: 73: Hoare triple {6175#true} assume !(0 == ~cond); {6175#true} is VALID [2020-07-18 06:38:06,957 INFO L280 TraceCheckUtils]: 74: Hoare triple {6175#true} assume true; {6175#true} is VALID [2020-07-18 06:38:06,958 INFO L275 TraceCheckUtils]: 75: Hoare quadruple {6175#true} {6179#(<= 0 main_~i~0)} #71#return; {6179#(<= 0 main_~i~0)} is VALID [2020-07-18 06:38:06,958 INFO L263 TraceCheckUtils]: 76: Hoare triple {6179#(<= 0 main_~i~0)} call __VERIFIER_assert((if ~nlen~0 - 1 - ~i~0 < ~nlen~0 then 1 else 0)); {6175#true} is VALID [2020-07-18 06:38:06,958 INFO L280 TraceCheckUtils]: 77: Hoare triple {6175#true} ~cond := #in~cond; {6175#true} is VALID [2020-07-18 06:38:06,959 INFO L280 TraceCheckUtils]: 78: Hoare triple {6175#true} assume !(0 == ~cond); {6175#true} is VALID [2020-07-18 06:38:06,959 INFO L280 TraceCheckUtils]: 79: Hoare triple {6175#true} assume true; {6175#true} is VALID [2020-07-18 06:38:06,960 INFO L275 TraceCheckUtils]: 80: Hoare quadruple {6175#true} {6179#(<= 0 main_~i~0)} #73#return; {6179#(<= 0 main_~i~0)} is VALID [2020-07-18 06:38:06,960 INFO L280 TraceCheckUtils]: 81: Hoare triple {6179#(<= 0 main_~i~0)} #t~post2 := ~j~0; {6179#(<= 0 main_~i~0)} is VALID [2020-07-18 06:38:06,961 INFO L280 TraceCheckUtils]: 82: Hoare triple {6179#(<= 0 main_~i~0)} ~j~0 := 1 + #t~post2; {6179#(<= 0 main_~i~0)} is VALID [2020-07-18 06:38:06,961 INFO L280 TraceCheckUtils]: 83: Hoare triple {6179#(<= 0 main_~i~0)} havoc #t~post2; {6179#(<= 0 main_~i~0)} is VALID [2020-07-18 06:38:06,962 INFO L280 TraceCheckUtils]: 84: Hoare triple {6179#(<= 0 main_~i~0)} assume !!(~j~0 < 8); {6179#(<= 0 main_~i~0)} is VALID [2020-07-18 06:38:06,962 INFO L263 TraceCheckUtils]: 85: Hoare triple {6179#(<= 0 main_~i~0)} call __VERIFIER_assert((if 0 <= ~nlen~0 - 1 - ~i~0 then 1 else 0)); {6175#true} is VALID [2020-07-18 06:38:06,962 INFO L280 TraceCheckUtils]: 86: Hoare triple {6175#true} ~cond := #in~cond; {6175#true} is VALID [2020-07-18 06:38:06,962 INFO L280 TraceCheckUtils]: 87: Hoare triple {6175#true} assume !(0 == ~cond); {6175#true} is VALID [2020-07-18 06:38:06,963 INFO L280 TraceCheckUtils]: 88: Hoare triple {6175#true} assume true; {6175#true} is VALID [2020-07-18 06:38:06,964 INFO L275 TraceCheckUtils]: 89: Hoare quadruple {6175#true} {6179#(<= 0 main_~i~0)} #71#return; {6179#(<= 0 main_~i~0)} is VALID [2020-07-18 06:38:06,964 INFO L263 TraceCheckUtils]: 90: Hoare triple {6179#(<= 0 main_~i~0)} call __VERIFIER_assert((if ~nlen~0 - 1 - ~i~0 < ~nlen~0 then 1 else 0)); {6175#true} is VALID [2020-07-18 06:38:06,964 INFO L280 TraceCheckUtils]: 91: Hoare triple {6175#true} ~cond := #in~cond; {6175#true} is VALID [2020-07-18 06:38:06,964 INFO L280 TraceCheckUtils]: 92: Hoare triple {6175#true} assume !(0 == ~cond); {6175#true} is VALID [2020-07-18 06:38:06,964 INFO L280 TraceCheckUtils]: 93: Hoare triple {6175#true} assume true; {6175#true} is VALID [2020-07-18 06:38:06,965 INFO L275 TraceCheckUtils]: 94: Hoare quadruple {6175#true} {6179#(<= 0 main_~i~0)} #73#return; {6179#(<= 0 main_~i~0)} is VALID [2020-07-18 06:38:06,965 INFO L280 TraceCheckUtils]: 95: Hoare triple {6179#(<= 0 main_~i~0)} #t~post2 := ~j~0; {6179#(<= 0 main_~i~0)} is VALID [2020-07-18 06:38:06,966 INFO L280 TraceCheckUtils]: 96: Hoare triple {6179#(<= 0 main_~i~0)} ~j~0 := 1 + #t~post2; {6179#(<= 0 main_~i~0)} is VALID [2020-07-18 06:38:06,966 INFO L280 TraceCheckUtils]: 97: Hoare triple {6179#(<= 0 main_~i~0)} havoc #t~post2; {6179#(<= 0 main_~i~0)} is VALID [2020-07-18 06:38:06,967 INFO L280 TraceCheckUtils]: 98: Hoare triple {6179#(<= 0 main_~i~0)} assume !!(~j~0 < 8); {6179#(<= 0 main_~i~0)} is VALID [2020-07-18 06:38:06,967 INFO L263 TraceCheckUtils]: 99: Hoare triple {6179#(<= 0 main_~i~0)} call __VERIFIER_assert((if 0 <= ~nlen~0 - 1 - ~i~0 then 1 else 0)); {6175#true} is VALID [2020-07-18 06:38:06,967 INFO L280 TraceCheckUtils]: 100: Hoare triple {6175#true} ~cond := #in~cond; {6175#true} is VALID [2020-07-18 06:38:06,967 INFO L280 TraceCheckUtils]: 101: Hoare triple {6175#true} assume !(0 == ~cond); {6175#true} is VALID [2020-07-18 06:38:06,968 INFO L280 TraceCheckUtils]: 102: Hoare triple {6175#true} assume true; {6175#true} is VALID [2020-07-18 06:38:06,968 INFO L275 TraceCheckUtils]: 103: Hoare quadruple {6175#true} {6179#(<= 0 main_~i~0)} #71#return; {6179#(<= 0 main_~i~0)} is VALID [2020-07-18 06:38:06,969 INFO L263 TraceCheckUtils]: 104: Hoare triple {6179#(<= 0 main_~i~0)} call __VERIFIER_assert((if ~nlen~0 - 1 - ~i~0 < ~nlen~0 then 1 else 0)); {6175#true} is VALID [2020-07-18 06:38:06,969 INFO L280 TraceCheckUtils]: 105: Hoare triple {6175#true} ~cond := #in~cond; {6175#true} is VALID [2020-07-18 06:38:06,969 INFO L280 TraceCheckUtils]: 106: Hoare triple {6175#true} assume !(0 == ~cond); {6175#true} is VALID [2020-07-18 06:38:06,969 INFO L280 TraceCheckUtils]: 107: Hoare triple {6175#true} assume true; {6175#true} is VALID [2020-07-18 06:38:06,970 INFO L275 TraceCheckUtils]: 108: Hoare quadruple {6175#true} {6179#(<= 0 main_~i~0)} #73#return; {6179#(<= 0 main_~i~0)} is VALID [2020-07-18 06:38:06,971 INFO L280 TraceCheckUtils]: 109: Hoare triple {6179#(<= 0 main_~i~0)} #t~post2 := ~j~0; {6179#(<= 0 main_~i~0)} is VALID [2020-07-18 06:38:06,972 INFO L280 TraceCheckUtils]: 110: Hoare triple {6179#(<= 0 main_~i~0)} ~j~0 := 1 + #t~post2; {6179#(<= 0 main_~i~0)} is VALID [2020-07-18 06:38:06,972 INFO L280 TraceCheckUtils]: 111: Hoare triple {6179#(<= 0 main_~i~0)} havoc #t~post2; {6179#(<= 0 main_~i~0)} is VALID [2020-07-18 06:38:06,973 INFO L280 TraceCheckUtils]: 112: Hoare triple {6179#(<= 0 main_~i~0)} assume !!(~j~0 < 8); {6179#(<= 0 main_~i~0)} is VALID [2020-07-18 06:38:06,973 INFO L263 TraceCheckUtils]: 113: Hoare triple {6179#(<= 0 main_~i~0)} call __VERIFIER_assert((if 0 <= ~nlen~0 - 1 - ~i~0 then 1 else 0)); {6175#true} is VALID [2020-07-18 06:38:06,973 INFO L280 TraceCheckUtils]: 114: Hoare triple {6175#true} ~cond := #in~cond; {6175#true} is VALID [2020-07-18 06:38:06,973 INFO L280 TraceCheckUtils]: 115: Hoare triple {6175#true} assume !(0 == ~cond); {6175#true} is VALID [2020-07-18 06:38:06,974 INFO L280 TraceCheckUtils]: 116: Hoare triple {6175#true} assume true; {6175#true} is VALID [2020-07-18 06:38:06,975 INFO L275 TraceCheckUtils]: 117: Hoare quadruple {6175#true} {6179#(<= 0 main_~i~0)} #71#return; {6179#(<= 0 main_~i~0)} is VALID [2020-07-18 06:38:06,975 INFO L263 TraceCheckUtils]: 118: Hoare triple {6179#(<= 0 main_~i~0)} call __VERIFIER_assert((if ~nlen~0 - 1 - ~i~0 < ~nlen~0 then 1 else 0)); {6175#true} is VALID [2020-07-18 06:38:06,975 INFO L280 TraceCheckUtils]: 119: Hoare triple {6175#true} ~cond := #in~cond; {6175#true} is VALID [2020-07-18 06:38:06,975 INFO L280 TraceCheckUtils]: 120: Hoare triple {6175#true} assume !(0 == ~cond); {6175#true} is VALID [2020-07-18 06:38:06,975 INFO L280 TraceCheckUtils]: 121: Hoare triple {6175#true} assume true; {6175#true} is VALID [2020-07-18 06:38:06,976 INFO L275 TraceCheckUtils]: 122: Hoare quadruple {6175#true} {6179#(<= 0 main_~i~0)} #73#return; {6179#(<= 0 main_~i~0)} is VALID [2020-07-18 06:38:06,976 INFO L280 TraceCheckUtils]: 123: Hoare triple {6179#(<= 0 main_~i~0)} #t~post2 := ~j~0; {6179#(<= 0 main_~i~0)} is VALID [2020-07-18 06:38:06,977 INFO L280 TraceCheckUtils]: 124: Hoare triple {6179#(<= 0 main_~i~0)} ~j~0 := 1 + #t~post2; {6179#(<= 0 main_~i~0)} is VALID [2020-07-18 06:38:06,977 INFO L280 TraceCheckUtils]: 125: Hoare triple {6179#(<= 0 main_~i~0)} havoc #t~post2; {6179#(<= 0 main_~i~0)} is VALID [2020-07-18 06:38:06,978 INFO L280 TraceCheckUtils]: 126: Hoare triple {6179#(<= 0 main_~i~0)} assume !(~j~0 < 8); {6179#(<= 0 main_~i~0)} is VALID [2020-07-18 06:38:06,978 INFO L280 TraceCheckUtils]: 127: Hoare triple {6179#(<= 0 main_~i~0)} #t~post1 := ~i~0; {6244#(<= 0 |main_#t~post1|)} is VALID [2020-07-18 06:38:06,979 INFO L280 TraceCheckUtils]: 128: Hoare triple {6244#(<= 0 |main_#t~post1|)} ~i~0 := 1 + #t~post1; {6245#(<= 1 main_~i~0)} is VALID [2020-07-18 06:38:06,980 INFO L280 TraceCheckUtils]: 129: Hoare triple {6245#(<= 1 main_~i~0)} havoc #t~post1; {6245#(<= 1 main_~i~0)} is VALID [2020-07-18 06:38:06,981 INFO L280 TraceCheckUtils]: 130: Hoare triple {6245#(<= 1 main_~i~0)} assume !!(~i~0 < ~nlen~0); {6245#(<= 1 main_~i~0)} is VALID [2020-07-18 06:38:06,981 INFO L280 TraceCheckUtils]: 131: Hoare triple {6245#(<= 1 main_~i~0)} ~j~0 := 0; {6245#(<= 1 main_~i~0)} is VALID [2020-07-18 06:38:06,982 INFO L280 TraceCheckUtils]: 132: Hoare triple {6245#(<= 1 main_~i~0)} assume !!(~j~0 < 8); {6245#(<= 1 main_~i~0)} is VALID [2020-07-18 06:38:06,982 INFO L263 TraceCheckUtils]: 133: Hoare triple {6245#(<= 1 main_~i~0)} call __VERIFIER_assert((if 0 <= ~nlen~0 - 1 - ~i~0 then 1 else 0)); {6175#true} is VALID [2020-07-18 06:38:06,983 INFO L280 TraceCheckUtils]: 134: Hoare triple {6175#true} ~cond := #in~cond; {6175#true} is VALID [2020-07-18 06:38:06,983 INFO L280 TraceCheckUtils]: 135: Hoare triple {6175#true} assume !(0 == ~cond); {6175#true} is VALID [2020-07-18 06:38:06,983 INFO L280 TraceCheckUtils]: 136: Hoare triple {6175#true} assume true; {6175#true} is VALID [2020-07-18 06:38:06,984 INFO L275 TraceCheckUtils]: 137: Hoare quadruple {6175#true} {6245#(<= 1 main_~i~0)} #71#return; {6245#(<= 1 main_~i~0)} is VALID [2020-07-18 06:38:06,986 INFO L263 TraceCheckUtils]: 138: Hoare triple {6245#(<= 1 main_~i~0)} call __VERIFIER_assert((if ~nlen~0 - 1 - ~i~0 < ~nlen~0 then 1 else 0)); {6250#(not (= 0 |__VERIFIER_assert_#in~cond|))} is VALID [2020-07-18 06:38:06,986 INFO L280 TraceCheckUtils]: 139: Hoare triple {6250#(not (= 0 |__VERIFIER_assert_#in~cond|))} ~cond := #in~cond; {6251#(not (= 0 __VERIFIER_assert_~cond))} is VALID [2020-07-18 06:38:06,987 INFO L280 TraceCheckUtils]: 140: Hoare triple {6251#(not (= 0 __VERIFIER_assert_~cond))} assume 0 == ~cond; {6176#false} is VALID [2020-07-18 06:38:06,987 INFO L280 TraceCheckUtils]: 141: Hoare triple {6176#false} assume !false; {6176#false} is VALID [2020-07-18 06:38:07,010 INFO L134 CoverageAnalysis]: Checked inductivity of 781 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 720 trivial. 0 not checked. [2020-07-18 06:38:07,010 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [761926116] [2020-07-18 06:38:07,011 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-18 06:38:07,011 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-18 06:38:07,011 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230829878] [2020-07-18 06:38:07,012 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 142 [2020-07-18 06:38:07,013 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-18 06:38:07,013 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 7 states. [2020-07-18 06:38:07,064 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 38 edges. 38 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 06:38:07,064 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-18 06:38:07,064 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-18 06:38:07,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-18 06:38:07,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-07-18 06:38:07,065 INFO L87 Difference]: Start difference. First operand 131 states and 162 transitions. Second operand 7 states. [2020-07-18 06:38:07,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 06:38:07,593 INFO L93 Difference]: Finished difference Result 133 states and 164 transitions. [2020-07-18 06:38:07,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-18 06:38:07,593 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 142 [2020-07-18 06:38:07,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-18 06:38:07,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-07-18 06:38:07,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 47 transitions. [2020-07-18 06:38:07,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-07-18 06:38:07,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 47 transitions. [2020-07-18 06:38:07,598 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 9 states and 47 transitions. [2020-07-18 06:38:07,658 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 47 edges. 47 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 06:38:07,658 INFO L225 Difference]: With dead ends: 133 [2020-07-18 06:38:07,659 INFO L226 Difference]: Without dead ends: 0 [2020-07-18 06:38:07,660 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-07-18 06:38:07,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-18 06:38:07,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-18 06:38:07,660 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-18 06:38:07,660 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand 0 states. [2020-07-18 06:38:07,660 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-18 06:38:07,661 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-18 06:38:07,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 06:38:07,661 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-18 06:38:07,661 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-18 06:38:07,661 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 06:38:07,661 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 06:38:07,662 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-18 06:38:07,662 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-18 06:38:07,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 06:38:07,662 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-18 06:38:07,662 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-18 06:38:07,662 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 06:38:07,663 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 06:38:07,663 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-18 06:38:07,663 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-18 06:38:07,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-18 06:38:07,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-18 06:38:07,664 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 142 [2020-07-18 06:38:07,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-18 06:38:07,665 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-18 06:38:07,665 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-18 06:38:07,665 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 0 states and 0 transitions. [2020-07-18 06:38:07,665 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 06:38:07,665 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-18 06:38:07,665 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 06:38:07,666 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-07-18 06:38:07,668 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-18 06:38:08,857 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 12 [2020-07-18 06:38:09,053 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 12 [2020-07-18 06:38:09,380 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 12 [2020-07-18 06:38:09,581 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 12 [2020-07-18 06:38:09,628 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-18 06:38:09,629 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-07-18 06:38:09,629 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-07-18 06:38:09,629 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-18 06:38:09,629 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-18 06:38:09,629 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-07-18 06:38:09,629 INFO L268 CegarLoopResult]: For program point L4-3(lines 3 5) no Hoare annotation was computed. [2020-07-18 06:38:09,629 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-07-18 06:38:09,629 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-07-18 06:38:09,630 INFO L268 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-07-18 06:38:09,630 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-07-18 06:38:09,630 INFO L271 CegarLoopResult]: At program point mainEXIT(lines 13 23) the Hoare annotation is: true [2020-07-18 06:38:09,630 INFO L264 CegarLoopResult]: At program point L19(lines 17 20) the Hoare annotation is: (and (<= main_~j~0 7) (< main_~i~0 main_~nlen~0) (< 0 (+ main_~i~0 1))) [2020-07-18 06:38:09,630 INFO L264 CegarLoopResult]: At program point L17(line 17) the Hoare annotation is: (and (< main_~i~0 main_~nlen~0) (< 0 (+ main_~i~0 1))) [2020-07-18 06:38:09,630 INFO L271 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: true [2020-07-18 06:38:09,631 INFO L271 CegarLoopResult]: At program point L15-1(line 15) the Hoare annotation is: true [2020-07-18 06:38:09,631 INFO L264 CegarLoopResult]: At program point L17-3(line 17) the Hoare annotation is: (and (<= main_~j~0 7) (< main_~i~0 main_~nlen~0) (< 0 (+ main_~i~0 1))) [2020-07-18 06:38:09,631 INFO L264 CegarLoopResult]: At program point L17-4(line 17) the Hoare annotation is: (and (< main_~i~0 main_~nlen~0) (< 0 (+ main_~i~0 1))) [2020-07-18 06:38:09,631 INFO L271 CegarLoopResult]: At program point mainFINAL(lines 13 23) the Hoare annotation is: true [2020-07-18 06:38:09,631 INFO L264 CegarLoopResult]: At program point L17-5(lines 17 20) the Hoare annotation is: (and (< main_~i~0 main_~nlen~0) (< 0 (+ main_~i~0 1))) [2020-07-18 06:38:09,631 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 23) the Hoare annotation is: true [2020-07-18 06:38:09,632 INFO L264 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (and (<= main_~j~0 7) (< main_~i~0 main_~nlen~0) (< 0 (+ main_~i~0 1))) [2020-07-18 06:38:09,632 INFO L264 CegarLoopResult]: At program point L18-1(line 18) the Hoare annotation is: (and (<= main_~j~0 7) (< main_~i~0 main_~nlen~0) (< 0 (+ main_~i~0 1))) [2020-07-18 06:38:09,632 INFO L271 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: true [2020-07-18 06:38:09,632 INFO L271 CegarLoopResult]: At program point L14(line 14) the Hoare annotation is: true [2020-07-18 06:38:09,632 INFO L271 CegarLoopResult]: At program point L14-1(line 14) the Hoare annotation is: true [2020-07-18 06:38:09,632 INFO L264 CegarLoopResult]: At program point L16-3(lines 16 21) the Hoare annotation is: (and (<= 0 main_~i~0) (< main_~i~0 main_~nlen~0)) [2020-07-18 06:38:09,632 INFO L271 CegarLoopResult]: At program point L14-2(line 14) the Hoare annotation is: true [2020-07-18 06:38:09,633 INFO L264 CegarLoopResult]: At program point L16-4(line 16) the Hoare annotation is: (and (<= 0 main_~i~0) (< main_~i~0 main_~nlen~0) (<= 0 |main_#t~post1|)) [2020-07-18 06:38:09,633 INFO L271 CegarLoopResult]: At program point L14-3(line 14) the Hoare annotation is: true [2020-07-18 06:38:09,633 INFO L264 CegarLoopResult]: At program point L16-5(line 16) the Hoare annotation is: (and (<= 0 |main_#t~post1|) (<= 1 main_~i~0)) [2020-07-18 06:38:09,633 INFO L264 CegarLoopResult]: At program point L16-6(lines 16 21) the Hoare annotation is: (< 0 (+ main_~i~0 1)) [2020-07-18 06:38:09,633 INFO L271 CegarLoopResult]: At program point L16-7(lines 16 21) the Hoare annotation is: true [2020-07-18 06:38:09,633 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-07-18 06:38:09,633 INFO L264 CegarLoopResult]: At program point __VERIFIER_assertEXIT(lines 6 11) the Hoare annotation is: (or (= 0 |__VERIFIER_assert_#in~cond|) (not (= 0 __VERIFIER_assert_~cond))) [2020-07-18 06:38:09,634 INFO L264 CegarLoopResult]: At program point L8(line 8) the Hoare annotation is: (= 0 |__VERIFIER_assert_#in~cond|) [2020-07-18 06:38:09,634 INFO L264 CegarLoopResult]: At program point L7(lines 7 9) the Hoare annotation is: (or (= 0 |__VERIFIER_assert_#in~cond|) (not (= 0 __VERIFIER_assert_~cond))) [2020-07-18 06:38:09,634 INFO L264 CegarLoopResult]: At program point L7-2(lines 6 11) the Hoare annotation is: (or (= 0 |__VERIFIER_assert_#in~cond|) (not (= 0 __VERIFIER_assert_~cond))) [2020-07-18 06:38:09,634 INFO L264 CegarLoopResult]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) the Hoare annotation is: (= 0 |__VERIFIER_assert_#in~cond|) [2020-07-18 06:38:09,639 WARN L170 areAnnotationChecker]: assume_abort_if_notENTRY has no Hoare annotation [2020-07-18 06:38:09,641 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2020-07-18 06:38:09,642 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2020-07-18 06:38:09,642 WARN L170 areAnnotationChecker]: L4-1 has no Hoare annotation [2020-07-18 06:38:09,643 WARN L170 areAnnotationChecker]: L4-3 has no Hoare annotation [2020-07-18 06:38:09,652 INFO L163 areAnnotationChecker]: CFG has 39 edges. 39 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-18 06:38:09,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.07 06:38:09 BoogieIcfgContainer [2020-07-18 06:38:09,665 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-18 06:38:09,667 INFO L168 Benchmark]: Toolchain (without parser) took 15237.60 ms. Allocated memory was 146.3 MB in the beginning and 386.9 MB in the end (delta: 240.6 MB). Free memory was 104.7 MB in the beginning and 276.8 MB in the end (delta: -172.2 MB). Peak memory consumption was 68.5 MB. Max. memory is 7.1 GB. [2020-07-18 06:38:09,668 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 146.3 MB. Free memory was 122.8 MB in the beginning and 122.6 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-18 06:38:09,669 INFO L168 Benchmark]: CACSL2BoogieTranslator took 224.01 ms. Allocated memory is still 146.3 MB. Free memory was 104.3 MB in the beginning and 94.6 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-07-18 06:38:09,669 INFO L168 Benchmark]: Boogie Preprocessor took 33.49 ms. Allocated memory is still 146.3 MB. Free memory was 94.6 MB in the beginning and 93.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 7.1 GB. [2020-07-18 06:38:09,670 INFO L168 Benchmark]: RCFGBuilder took 469.31 ms. Allocated memory was 146.3 MB in the beginning and 202.9 MB in the end (delta: 56.6 MB). Free memory was 93.0 MB in the beginning and 163.2 MB in the end (delta: -70.1 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-07-18 06:38:09,671 INFO L168 Benchmark]: TraceAbstraction took 14504.96 ms. Allocated memory was 202.9 MB in the beginning and 386.9 MB in the end (delta: 184.0 MB). Free memory was 162.5 MB in the beginning and 276.8 MB in the end (delta: -114.3 MB). Peak memory consumption was 69.7 MB. Max. memory is 7.1 GB. [2020-07-18 06:38:09,674 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 146.3 MB. Free memory was 122.8 MB in the beginning and 122.6 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 224.01 ms. Allocated memory is still 146.3 MB. Free memory was 104.3 MB in the beginning and 94.6 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 33.49 ms. Allocated memory is still 146.3 MB. Free memory was 94.6 MB in the beginning and 93.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 469.31 ms. Allocated memory was 146.3 MB in the beginning and 202.9 MB in the end (delta: 56.6 MB). Free memory was 93.0 MB in the beginning and 163.2 MB in the end (delta: -70.1 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 14504.96 ms. Allocated memory was 202.9 MB in the beginning and 386.9 MB in the end (delta: 184.0 MB). Free memory was 162.5 MB in the beginning and 276.8 MB in the end (delta: -114.3 MB). Peak memory consumption was 69.7 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: 17]: Loop Invariant Derived loop invariant: i < nlen && 0 < i + 1 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 0 < i + 1 - ProcedureContractResult [Line: 13]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 6]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 0 == \old(cond) || !(0 == cond) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 12.4s, OverallIterations: 11, TraceHistogramMax: 18, AutomataDifference: 6.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 393 SDtfs, 131 SDslu, 1161 SDs, 0 SdLazy, 419 SolverSat, 125 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 345 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=131occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.5s AutomataMinimizationTime, 11 MinimizatonAttempts, 58 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 34 LocationsWithAnnotation, 580 PreInvPairs, 756 NumberOfFragments, 152 HoareAnnotationTreeSize, 580 FomulaSimplifications, 21629 FormulaSimplificationTreeSizeReduction, 0.7s HoareSimplificationTime, 34 FomulaSimplificationsInter, 10417 FormulaSimplificationTreeSizeReductionInter, 0.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 817 NumberOfCodeBlocks, 817 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 806 ConstructedInterpolants, 0 QuantifiedInterpolants, 130448 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 4 PerfectInterpolantSequences, 2251/2615 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...