/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/nested6.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-46f3038-m [2020-07-08 23:40:15,299 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-08 23:40:15,302 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-08 23:40:15,315 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-08 23:40:15,315 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-08 23:40:15,316 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-08 23:40:15,318 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-08 23:40:15,319 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-08 23:40:15,321 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-08 23:40:15,322 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-08 23:40:15,323 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-08 23:40:15,325 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-08 23:40:15,325 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-08 23:40:15,326 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-08 23:40:15,327 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-08 23:40:15,329 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-08 23:40:15,329 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-08 23:40:15,330 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-08 23:40:15,332 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-08 23:40:15,334 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-08 23:40:15,336 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-08 23:40:15,337 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-08 23:40:15,339 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-08 23:40:15,340 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-08 23:40:15,342 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-08 23:40:15,349 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-08 23:40:15,350 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-08 23:40:15,351 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-08 23:40:15,352 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-08 23:40:15,353 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-08 23:40:15,353 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-08 23:40:15,354 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-08 23:40:15,354 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-08 23:40:15,355 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-08 23:40:15,356 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-08 23:40:15,356 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-08 23:40:15,357 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-08 23:40:15,367 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-08 23:40:15,367 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-08 23:40:15,368 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-08 23:40:15,369 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-08 23:40:15,369 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-08 23:40:15,369 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-08 23:40:15,369 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-08 23:40:15,369 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-08 23:40:15,370 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-08 23:40:15,370 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-08 23:40:15,370 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-08 23:40:15,370 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-08 23:40:15,370 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-08 23:40:15,371 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-08 23:40:15,371 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-08 23:40:15,371 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-08 23:40:15,371 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-08 23:40:15,371 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-08 23:40:15,372 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-08 23:40:15,372 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-08 23:40:15,372 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-08 23:40:15,372 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-08 23:40:15,373 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 [2020-07-08 23:40:15,660 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-08 23:40:15,672 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-08 23:40:15,674 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-08 23:40:15,676 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-08 23:40:15,676 INFO L275 PluginConnector]: CDTParser initialized [2020-07-08 23:40:15,677 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/nested6.i [2020-07-08 23:40:15,750 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6561a3686/ed6cb373abf14cec8afe70641e62ca34/FLAG214d676ab [2020-07-08 23:40:16,144 INFO L306 CDTParser]: Found 1 translation units. [2020-07-08 23:40:16,145 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/nested6.i [2020-07-08 23:40:16,151 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6561a3686/ed6cb373abf14cec8afe70641e62ca34/FLAG214d676ab [2020-07-08 23:40:16,579 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6561a3686/ed6cb373abf14cec8afe70641e62ca34 [2020-07-08 23:40:16,590 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-08 23:40:16,592 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-08 23:40:16,597 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-08 23:40:16,597 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-08 23:40:16,601 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-08 23:40:16,603 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.07 11:40:16" (1/1) ... [2020-07-08 23:40:16,607 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e71235e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 11:40:16, skipping insertion in model container [2020-07-08 23:40:16,607 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.07 11:40:16" (1/1) ... [2020-07-08 23:40:16,616 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-08 23:40:16,634 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-08 23:40:16,806 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-08 23:40:16,811 INFO L203 MainTranslator]: Completed pre-run [2020-07-08 23:40:16,832 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-08 23:40:16,848 INFO L208 MainTranslator]: Completed translation [2020-07-08 23:40:16,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 11:40:16 WrapperNode [2020-07-08 23:40:16,849 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-08 23:40:16,849 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-08 23:40:16,850 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-08 23:40:16,850 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-08 23:40:16,860 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 11:40:16" (1/1) ... [2020-07-08 23:40:16,860 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 11:40:16" (1/1) ... [2020-07-08 23:40:16,865 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 11:40:16" (1/1) ... [2020-07-08 23:40:16,865 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 11:40:16" (1/1) ... [2020-07-08 23:40:16,871 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 11:40:16" (1/1) ... [2020-07-08 23:40:16,878 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 11:40:16" (1/1) ... [2020-07-08 23:40:16,879 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 11:40:16" (1/1) ... [2020-07-08 23:40:16,978 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-08 23:40:16,979 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-08 23:40:16,979 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-08 23:40:16,979 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-08 23:40:16,980 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 11:40:16" (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 [2020-07-08 23:40:17,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-08 23:40:17,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-08 23:40:17,068 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-08 23:40:17,069 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-08 23:40:17,069 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-08 23:40:17,069 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-08 23:40:17,069 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-08 23:40:17,069 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-08 23:40:17,070 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-08 23:40:17,070 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-08 23:40:17,070 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-08 23:40:17,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-08 23:40:17,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-08 23:40:17,467 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-08 23:40:17,467 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-07-08 23:40:17,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.07 11:40:17 BoogieIcfgContainer [2020-07-08 23:40:17,473 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-08 23:40:17,475 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-08 23:40:17,475 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-08 23:40:17,479 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-08 23:40:17,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.07 11:40:16" (1/3) ... [2020-07-08 23:40:17,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42732596 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.07 11:40:17, skipping insertion in model container [2020-07-08 23:40:17,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 11:40:16" (2/3) ... [2020-07-08 23:40:17,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42732596 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.07 11:40:17, skipping insertion in model container [2020-07-08 23:40:17,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.07 11:40:17" (3/3) ... [2020-07-08 23:40:17,483 INFO L109 eAbstractionObserver]: Analyzing ICFG nested6.i [2020-07-08 23:40:17,499 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-08 23:40:17,512 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-08 23:40:17,550 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-08 23:40:17,598 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-08 23:40:17,598 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-08 23:40:17,598 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-07-08 23:40:17,599 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-08 23:40:17,599 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-08 23:40:17,599 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-08 23:40:17,599 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-08 23:40:17,599 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-08 23:40:17,617 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2020-07-08 23:40:17,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-08 23:40:17,646 INFO L414 BasicCegarLoop]: Found error trace [2020-07-08 23:40:17,648 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-08 23:40:17,648 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-08 23:40:17,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-08 23:40:17,663 INFO L82 PathProgramCache]: Analyzing trace with hash 2127483765, now seen corresponding path program 1 times [2020-07-08 23:40:17,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-08 23:40:17,688 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2032312762] [2020-07-08 23:40:17,688 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-08 23:40:17,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 23:40:18,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 23:40:18,039 INFO L280 TraceCheckUtils]: 0: Hoare triple {53#true} assume true; {53#true} is VALID [2020-07-08 23:40:18,040 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {53#true} {53#true} #106#return; {53#true} is VALID [2020-07-08 23:40:18,041 INFO L263 TraceCheckUtils]: 0: Hoare triple {53#true} call ULTIMATE.init(); {53#true} is VALID [2020-07-08 23:40:18,042 INFO L280 TraceCheckUtils]: 1: Hoare triple {53#true} assume true; {53#true} is VALID [2020-07-08 23:40:18,042 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {53#true} {53#true} #106#return; {53#true} is VALID [2020-07-08 23:40:18,043 INFO L263 TraceCheckUtils]: 3: Hoare triple {53#true} call #t~ret6 := main(); {53#true} is VALID [2020-07-08 23:40:18,043 INFO L280 TraceCheckUtils]: 4: Hoare triple {53#true} havoc ~i~0; {53#true} is VALID [2020-07-08 23:40:18,044 INFO L280 TraceCheckUtils]: 5: Hoare triple {53#true} havoc ~j~0; {53#true} is VALID [2020-07-08 23:40:18,044 INFO L280 TraceCheckUtils]: 6: Hoare triple {53#true} havoc ~k~0; {53#true} is VALID [2020-07-08 23:40:18,044 INFO L280 TraceCheckUtils]: 7: Hoare triple {53#true} havoc ~n~0; {53#true} is VALID [2020-07-08 23:40:18,045 INFO L280 TraceCheckUtils]: 8: Hoare triple {53#true} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; {53#true} is VALID [2020-07-08 23:40:18,045 INFO L280 TraceCheckUtils]: 9: Hoare triple {53#true} ~k~0 := #t~nondet0; {53#true} is VALID [2020-07-08 23:40:18,046 INFO L280 TraceCheckUtils]: 10: Hoare triple {53#true} havoc #t~nondet0; {53#true} is VALID [2020-07-08 23:40:18,046 INFO L280 TraceCheckUtils]: 11: Hoare triple {53#true} assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647; {53#true} is VALID [2020-07-08 23:40:18,047 INFO L280 TraceCheckUtils]: 12: Hoare triple {53#true} ~n~0 := #t~nondet1; {53#true} is VALID [2020-07-08 23:40:18,047 INFO L280 TraceCheckUtils]: 13: Hoare triple {53#true} havoc #t~nondet1; {53#true} is VALID [2020-07-08 23:40:18,048 INFO L280 TraceCheckUtils]: 14: Hoare triple {53#true} assume !!(~n~0 < 1000000); {53#true} is VALID [2020-07-08 23:40:18,053 INFO L280 TraceCheckUtils]: 15: Hoare triple {53#true} assume ~k~0 == ~n~0; {57#(<= main_~n~0 main_~k~0)} is VALID [2020-07-08 23:40:18,054 INFO L280 TraceCheckUtils]: 16: Hoare triple {57#(<= main_~n~0 main_~k~0)} ~i~0 := 0; {57#(<= main_~n~0 main_~k~0)} is VALID [2020-07-08 23:40:18,055 INFO L280 TraceCheckUtils]: 17: Hoare triple {57#(<= main_~n~0 main_~k~0)} assume !!(~i~0 < ~n~0); {57#(<= main_~n~0 main_~k~0)} is VALID [2020-07-08 23:40:18,059 INFO L280 TraceCheckUtils]: 18: Hoare triple {57#(<= main_~n~0 main_~k~0)} ~j~0 := 2 * ~i~0; {57#(<= main_~n~0 main_~k~0)} is VALID [2020-07-08 23:40:18,065 INFO L280 TraceCheckUtils]: 19: Hoare triple {57#(<= main_~n~0 main_~k~0)} assume !!(~j~0 < ~n~0); {57#(<= main_~n~0 main_~k~0)} is VALID [2020-07-08 23:40:18,067 INFO L280 TraceCheckUtils]: 20: Hoare triple {57#(<= main_~n~0 main_~k~0)} assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647; {57#(<= main_~n~0 main_~k~0)} is VALID [2020-07-08 23:40:18,069 INFO L280 TraceCheckUtils]: 21: Hoare triple {57#(<= main_~n~0 main_~k~0)} assume !(0 != #t~nondet4); {57#(<= main_~n~0 main_~k~0)} is VALID [2020-07-08 23:40:18,070 INFO L280 TraceCheckUtils]: 22: Hoare triple {57#(<= main_~n~0 main_~k~0)} havoc #t~nondet4; {57#(<= main_~n~0 main_~k~0)} is VALID [2020-07-08 23:40:18,072 INFO L263 TraceCheckUtils]: 23: Hoare triple {57#(<= main_~n~0 main_~k~0)} call __VERIFIER_assert((if ~k~0 >= ~n~0 then 1 else 0)); {58#(not (= 0 |__VERIFIER_assert_#in~cond|))} is VALID [2020-07-08 23:40:18,074 INFO L280 TraceCheckUtils]: 24: Hoare triple {58#(not (= 0 |__VERIFIER_assert_#in~cond|))} ~cond := #in~cond; {59#(not (= 0 __VERIFIER_assert_~cond))} is VALID [2020-07-08 23:40:18,075 INFO L280 TraceCheckUtils]: 25: Hoare triple {59#(not (= 0 __VERIFIER_assert_~cond))} assume 0 == ~cond; {54#false} is VALID [2020-07-08 23:40:18,076 INFO L280 TraceCheckUtils]: 26: Hoare triple {54#false} assume !false; {54#false} is VALID [2020-07-08 23:40:18,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-08 23:40:18,081 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2032312762] [2020-07-08 23:40:18,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-08 23:40:18,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-08 23:40:18,085 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934376798] [2020-07-08 23:40:18,092 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-07-08 23:40:18,095 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-08 23:40:18,100 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states. [2020-07-08 23:40:18,150 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 27 edges. 27 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 23:40:18,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-08 23:40:18,151 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-08 23:40:18,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-08 23:40:18,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-08 23:40:18,166 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 5 states. [2020-07-08 23:40:18,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 23:40:18,600 INFO L93 Difference]: Finished difference Result 89 states and 112 transitions. [2020-07-08 23:40:18,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-08 23:40:18,600 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-07-08 23:40:18,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-08 23:40:18,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-08 23:40:18,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 112 transitions. [2020-07-08 23:40:18,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-08 23:40:18,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 112 transitions. [2020-07-08 23:40:18,622 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states and 112 transitions. [2020-07-08 23:40:18,778 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 112 edges. 112 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 23:40:18,792 INFO L225 Difference]: With dead ends: 89 [2020-07-08 23:40:18,792 INFO L226 Difference]: Without dead ends: 48 [2020-07-08 23:40:18,797 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 [2020-07-08 23:40:18,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-07-08 23:40:18,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-07-08 23:40:18,881 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-08 23:40:18,882 INFO L82 GeneralOperation]: Start isEquivalent. First operand 48 states. Second operand 48 states. [2020-07-08 23:40:18,883 INFO L74 IsIncluded]: Start isIncluded. First operand 48 states. Second operand 48 states. [2020-07-08 23:40:18,883 INFO L87 Difference]: Start difference. First operand 48 states. Second operand 48 states. [2020-07-08 23:40:18,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 23:40:18,890 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2020-07-08 23:40:18,890 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2020-07-08 23:40:18,891 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 23:40:18,891 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 23:40:18,892 INFO L74 IsIncluded]: Start isIncluded. First operand 48 states. Second operand 48 states. [2020-07-08 23:40:18,892 INFO L87 Difference]: Start difference. First operand 48 states. Second operand 48 states. [2020-07-08 23:40:18,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 23:40:18,897 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2020-07-08 23:40:18,897 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2020-07-08 23:40:18,898 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 23:40:18,898 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 23:40:18,899 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-08 23:40:18,899 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-08 23:40:18,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-07-08 23:40:18,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2020-07-08 23:40:18,905 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 27 [2020-07-08 23:40:18,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-08 23:40:18,906 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2020-07-08 23:40:18,906 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-08 23:40:18,907 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 48 states and 52 transitions. [2020-07-08 23:40:18,970 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 52 edges. 52 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 23:40:18,970 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2020-07-08 23:40:18,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-07-08 23:40:18,971 INFO L414 BasicCegarLoop]: Found error trace [2020-07-08 23:40:18,972 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-08 23:40:18,972 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-08 23:40:18,972 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-08 23:40:18,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-08 23:40:18,973 INFO L82 PathProgramCache]: Analyzing trace with hash 1763359327, now seen corresponding path program 1 times [2020-07-08 23:40:18,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-08 23:40:18,974 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [498600561] [2020-07-08 23:40:18,974 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-08 23:40:18,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 23:40:19,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 23:40:19,065 INFO L280 TraceCheckUtils]: 0: Hoare triple {434#true} assume true; {434#true} is VALID [2020-07-08 23:40:19,066 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {434#true} {434#true} #106#return; {434#true} is VALID [2020-07-08 23:40:19,066 INFO L263 TraceCheckUtils]: 0: Hoare triple {434#true} call ULTIMATE.init(); {434#true} is VALID [2020-07-08 23:40:19,067 INFO L280 TraceCheckUtils]: 1: Hoare triple {434#true} assume true; {434#true} is VALID [2020-07-08 23:40:19,067 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {434#true} {434#true} #106#return; {434#true} is VALID [2020-07-08 23:40:19,067 INFO L263 TraceCheckUtils]: 3: Hoare triple {434#true} call #t~ret6 := main(); {434#true} is VALID [2020-07-08 23:40:19,068 INFO L280 TraceCheckUtils]: 4: Hoare triple {434#true} havoc ~i~0; {434#true} is VALID [2020-07-08 23:40:19,068 INFO L280 TraceCheckUtils]: 5: Hoare triple {434#true} havoc ~j~0; {434#true} is VALID [2020-07-08 23:40:19,068 INFO L280 TraceCheckUtils]: 6: Hoare triple {434#true} havoc ~k~0; {434#true} is VALID [2020-07-08 23:40:19,069 INFO L280 TraceCheckUtils]: 7: Hoare triple {434#true} havoc ~n~0; {434#true} is VALID [2020-07-08 23:40:19,069 INFO L280 TraceCheckUtils]: 8: Hoare triple {434#true} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; {434#true} is VALID [2020-07-08 23:40:19,069 INFO L280 TraceCheckUtils]: 9: Hoare triple {434#true} ~k~0 := #t~nondet0; {434#true} is VALID [2020-07-08 23:40:19,070 INFO L280 TraceCheckUtils]: 10: Hoare triple {434#true} havoc #t~nondet0; {434#true} is VALID [2020-07-08 23:40:19,070 INFO L280 TraceCheckUtils]: 11: Hoare triple {434#true} assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647; {434#true} is VALID [2020-07-08 23:40:19,070 INFO L280 TraceCheckUtils]: 12: Hoare triple {434#true} ~n~0 := #t~nondet1; {434#true} is VALID [2020-07-08 23:40:19,071 INFO L280 TraceCheckUtils]: 13: Hoare triple {434#true} havoc #t~nondet1; {434#true} is VALID [2020-07-08 23:40:19,071 INFO L280 TraceCheckUtils]: 14: Hoare triple {434#true} assume !!(~n~0 < 1000000); {434#true} is VALID [2020-07-08 23:40:19,071 INFO L280 TraceCheckUtils]: 15: Hoare triple {434#true} assume ~k~0 == ~n~0; {434#true} is VALID [2020-07-08 23:40:19,072 INFO L280 TraceCheckUtils]: 16: Hoare triple {434#true} ~i~0 := 0; {434#true} is VALID [2020-07-08 23:40:19,072 INFO L280 TraceCheckUtils]: 17: Hoare triple {434#true} assume !!(~i~0 < ~n~0); {434#true} is VALID [2020-07-08 23:40:19,073 INFO L280 TraceCheckUtils]: 18: Hoare triple {434#true} ~j~0 := 2 * ~i~0; {438#(<= (* 2 main_~i~0) main_~j~0)} is VALID [2020-07-08 23:40:19,074 INFO L280 TraceCheckUtils]: 19: Hoare triple {438#(<= (* 2 main_~i~0) main_~j~0)} assume !!(~j~0 < ~n~0); {438#(<= (* 2 main_~i~0) main_~j~0)} is VALID [2020-07-08 23:40:19,075 INFO L280 TraceCheckUtils]: 20: Hoare triple {438#(<= (* 2 main_~i~0) main_~j~0)} assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647; {438#(<= (* 2 main_~i~0) main_~j~0)} is VALID [2020-07-08 23:40:19,076 INFO L280 TraceCheckUtils]: 21: Hoare triple {438#(<= (* 2 main_~i~0) main_~j~0)} assume 0 != #t~nondet4; {438#(<= (* 2 main_~i~0) main_~j~0)} is VALID [2020-07-08 23:40:19,077 INFO L280 TraceCheckUtils]: 22: Hoare triple {438#(<= (* 2 main_~i~0) main_~j~0)} havoc #t~nondet4; {438#(<= (* 2 main_~i~0) main_~j~0)} is VALID [2020-07-08 23:40:19,078 INFO L280 TraceCheckUtils]: 23: Hoare triple {438#(<= (* 2 main_~i~0) main_~j~0)} ~k~0 := ~j~0; {439#(<= (* 2 main_~i~0) main_~k~0)} is VALID [2020-07-08 23:40:19,079 INFO L280 TraceCheckUtils]: 24: Hoare triple {439#(<= (* 2 main_~i~0) main_~k~0)} assume !!(~k~0 < ~n~0); {439#(<= (* 2 main_~i~0) main_~k~0)} is VALID [2020-07-08 23:40:19,080 INFO L263 TraceCheckUtils]: 25: Hoare triple {439#(<= (* 2 main_~i~0) main_~k~0)} call __VERIFIER_assert((if ~k~0 >= 2 * ~i~0 then 1 else 0)); {440#(not (= 0 |__VERIFIER_assert_#in~cond|))} is VALID [2020-07-08 23:40:19,081 INFO L280 TraceCheckUtils]: 26: Hoare triple {440#(not (= 0 |__VERIFIER_assert_#in~cond|))} ~cond := #in~cond; {441#(not (= 0 __VERIFIER_assert_~cond))} is VALID [2020-07-08 23:40:19,082 INFO L280 TraceCheckUtils]: 27: Hoare triple {441#(not (= 0 __VERIFIER_assert_~cond))} assume 0 == ~cond; {435#false} is VALID [2020-07-08 23:40:19,082 INFO L280 TraceCheckUtils]: 28: Hoare triple {435#false} assume !false; {435#false} is VALID [2020-07-08 23:40:19,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-08 23:40:19,085 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [498600561] [2020-07-08 23:40:19,085 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-08 23:40:19,085 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-08 23:40:19,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232455808] [2020-07-08 23:40:19,087 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-07-08 23:40:19,088 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-08 23:40:19,088 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states. [2020-07-08 23:40:19,121 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 29 edges. 29 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 23:40:19,122 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-08 23:40:19,122 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-08 23:40:19,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-08 23:40:19,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-08 23:40:19,123 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand 6 states. [2020-07-08 23:40:19,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 23:40:19,693 INFO L93 Difference]: Finished difference Result 90 states and 105 transitions. [2020-07-08 23:40:19,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-08 23:40:19,693 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-07-08 23:40:19,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-08 23:40:19,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-08 23:40:19,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 102 transitions. [2020-07-08 23:40:19,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-08 23:40:19,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 102 transitions. [2020-07-08 23:40:19,703 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 8 states and 102 transitions. [2020-07-08 23:40:19,821 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 102 edges. 102 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 23:40:19,826 INFO L225 Difference]: With dead ends: 90 [2020-07-08 23:40:19,826 INFO L226 Difference]: Without dead ends: 88 [2020-07-08 23:40:19,827 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-07-08 23:40:19,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-07-08 23:40:19,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 59. [2020-07-08 23:40:19,899 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-08 23:40:19,899 INFO L82 GeneralOperation]: Start isEquivalent. First operand 88 states. Second operand 59 states. [2020-07-08 23:40:19,900 INFO L74 IsIncluded]: Start isIncluded. First operand 88 states. Second operand 59 states. [2020-07-08 23:40:19,900 INFO L87 Difference]: Start difference. First operand 88 states. Second operand 59 states. [2020-07-08 23:40:19,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 23:40:19,907 INFO L93 Difference]: Finished difference Result 88 states and 103 transitions. [2020-07-08 23:40:19,907 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 103 transitions. [2020-07-08 23:40:19,908 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 23:40:19,908 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 23:40:19,909 INFO L74 IsIncluded]: Start isIncluded. First operand 59 states. Second operand 88 states. [2020-07-08 23:40:19,909 INFO L87 Difference]: Start difference. First operand 59 states. Second operand 88 states. [2020-07-08 23:40:19,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 23:40:19,915 INFO L93 Difference]: Finished difference Result 88 states and 103 transitions. [2020-07-08 23:40:19,915 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 103 transitions. [2020-07-08 23:40:19,917 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 23:40:19,917 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 23:40:19,917 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-08 23:40:19,917 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-08 23:40:19,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-07-08 23:40:19,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2020-07-08 23:40:19,921 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 29 [2020-07-08 23:40:19,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-08 23:40:19,921 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2020-07-08 23:40:19,921 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-08 23:40:19,922 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 59 states and 66 transitions. [2020-07-08 23:40:20,003 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 66 edges. 66 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 23:40:20,004 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2020-07-08 23:40:20,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-07-08 23:40:20,006 INFO L414 BasicCegarLoop]: Found error trace [2020-07-08 23:40:20,006 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-08 23:40:20,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-08 23:40:20,007 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-08 23:40:20,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-08 23:40:20,007 INFO L82 PathProgramCache]: Analyzing trace with hash 2139784298, now seen corresponding path program 1 times [2020-07-08 23:40:20,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-08 23:40:20,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [816628540] [2020-07-08 23:40:20,008 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-08 23:40:20,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 23:40:20,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 23:40:20,075 INFO L280 TraceCheckUtils]: 0: Hoare triple {922#true} assume true; {922#true} is VALID [2020-07-08 23:40:20,076 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {922#true} {922#true} #106#return; {922#true} is VALID [2020-07-08 23:40:20,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 23:40:20,085 INFO L280 TraceCheckUtils]: 0: Hoare triple {922#true} ~cond := #in~cond; {922#true} is VALID [2020-07-08 23:40:20,086 INFO L280 TraceCheckUtils]: 1: Hoare triple {922#true} assume !(0 == ~cond); {922#true} is VALID [2020-07-08 23:40:20,086 INFO L280 TraceCheckUtils]: 2: Hoare triple {922#true} assume true; {922#true} is VALID [2020-07-08 23:40:20,087 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {922#true} {926#(<= main_~k~0 main_~n~0)} #112#return; {926#(<= main_~k~0 main_~n~0)} is VALID [2020-07-08 23:40:20,088 INFO L263 TraceCheckUtils]: 0: Hoare triple {922#true} call ULTIMATE.init(); {922#true} is VALID [2020-07-08 23:40:20,088 INFO L280 TraceCheckUtils]: 1: Hoare triple {922#true} assume true; {922#true} is VALID [2020-07-08 23:40:20,088 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {922#true} {922#true} #106#return; {922#true} is VALID [2020-07-08 23:40:20,089 INFO L263 TraceCheckUtils]: 3: Hoare triple {922#true} call #t~ret6 := main(); {922#true} is VALID [2020-07-08 23:40:20,089 INFO L280 TraceCheckUtils]: 4: Hoare triple {922#true} havoc ~i~0; {922#true} is VALID [2020-07-08 23:40:20,089 INFO L280 TraceCheckUtils]: 5: Hoare triple {922#true} havoc ~j~0; {922#true} is VALID [2020-07-08 23:40:20,089 INFO L280 TraceCheckUtils]: 6: Hoare triple {922#true} havoc ~k~0; {922#true} is VALID [2020-07-08 23:40:20,090 INFO L280 TraceCheckUtils]: 7: Hoare triple {922#true} havoc ~n~0; {922#true} is VALID [2020-07-08 23:40:20,090 INFO L280 TraceCheckUtils]: 8: Hoare triple {922#true} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; {922#true} is VALID [2020-07-08 23:40:20,090 INFO L280 TraceCheckUtils]: 9: Hoare triple {922#true} ~k~0 := #t~nondet0; {922#true} is VALID [2020-07-08 23:40:20,091 INFO L280 TraceCheckUtils]: 10: Hoare triple {922#true} havoc #t~nondet0; {922#true} is VALID [2020-07-08 23:40:20,091 INFO L280 TraceCheckUtils]: 11: Hoare triple {922#true} assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647; {922#true} is VALID [2020-07-08 23:40:20,091 INFO L280 TraceCheckUtils]: 12: Hoare triple {922#true} ~n~0 := #t~nondet1; {922#true} is VALID [2020-07-08 23:40:20,091 INFO L280 TraceCheckUtils]: 13: Hoare triple {922#true} havoc #t~nondet1; {922#true} is VALID [2020-07-08 23:40:20,092 INFO L280 TraceCheckUtils]: 14: Hoare triple {922#true} assume !!(~n~0 < 1000000); {922#true} is VALID [2020-07-08 23:40:20,093 INFO L280 TraceCheckUtils]: 15: Hoare triple {922#true} assume ~k~0 == ~n~0; {926#(<= main_~k~0 main_~n~0)} is VALID [2020-07-08 23:40:20,093 INFO L280 TraceCheckUtils]: 16: Hoare triple {926#(<= main_~k~0 main_~n~0)} ~i~0 := 0; {926#(<= main_~k~0 main_~n~0)} is VALID [2020-07-08 23:40:20,094 INFO L280 TraceCheckUtils]: 17: Hoare triple {926#(<= main_~k~0 main_~n~0)} assume !!(~i~0 < ~n~0); {926#(<= main_~k~0 main_~n~0)} is VALID [2020-07-08 23:40:20,095 INFO L280 TraceCheckUtils]: 18: Hoare triple {926#(<= main_~k~0 main_~n~0)} ~j~0 := 2 * ~i~0; {926#(<= main_~k~0 main_~n~0)} is VALID [2020-07-08 23:40:20,096 INFO L280 TraceCheckUtils]: 19: Hoare triple {926#(<= main_~k~0 main_~n~0)} assume !!(~j~0 < ~n~0); {926#(<= main_~k~0 main_~n~0)} is VALID [2020-07-08 23:40:20,096 INFO L280 TraceCheckUtils]: 20: Hoare triple {926#(<= main_~k~0 main_~n~0)} assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647; {926#(<= main_~k~0 main_~n~0)} is VALID [2020-07-08 23:40:20,097 INFO L280 TraceCheckUtils]: 21: Hoare triple {926#(<= main_~k~0 main_~n~0)} assume !(0 != #t~nondet4); {926#(<= main_~k~0 main_~n~0)} is VALID [2020-07-08 23:40:20,098 INFO L280 TraceCheckUtils]: 22: Hoare triple {926#(<= main_~k~0 main_~n~0)} havoc #t~nondet4; {926#(<= main_~k~0 main_~n~0)} is VALID [2020-07-08 23:40:20,098 INFO L263 TraceCheckUtils]: 23: Hoare triple {926#(<= main_~k~0 main_~n~0)} call __VERIFIER_assert((if ~k~0 >= ~n~0 then 1 else 0)); {922#true} is VALID [2020-07-08 23:40:20,098 INFO L280 TraceCheckUtils]: 24: Hoare triple {922#true} ~cond := #in~cond; {922#true} is VALID [2020-07-08 23:40:20,098 INFO L280 TraceCheckUtils]: 25: Hoare triple {922#true} assume !(0 == ~cond); {922#true} is VALID [2020-07-08 23:40:20,099 INFO L280 TraceCheckUtils]: 26: Hoare triple {922#true} assume true; {922#true} is VALID [2020-07-08 23:40:20,100 INFO L275 TraceCheckUtils]: 27: Hoare quadruple {922#true} {926#(<= main_~k~0 main_~n~0)} #112#return; {926#(<= main_~k~0 main_~n~0)} is VALID [2020-07-08 23:40:20,101 INFO L263 TraceCheckUtils]: 28: Hoare triple {926#(<= main_~k~0 main_~n~0)} call __VERIFIER_assert((if ~k~0 <= ~n~0 then 1 else 0)); {931#(not (= 0 |__VERIFIER_assert_#in~cond|))} is VALID [2020-07-08 23:40:20,102 INFO L280 TraceCheckUtils]: 29: Hoare triple {931#(not (= 0 |__VERIFIER_assert_#in~cond|))} ~cond := #in~cond; {932#(not (= 0 __VERIFIER_assert_~cond))} is VALID [2020-07-08 23:40:20,103 INFO L280 TraceCheckUtils]: 30: Hoare triple {932#(not (= 0 __VERIFIER_assert_~cond))} assume 0 == ~cond; {923#false} is VALID [2020-07-08 23:40:20,103 INFO L280 TraceCheckUtils]: 31: Hoare triple {923#false} assume !false; {923#false} is VALID [2020-07-08 23:40:20,105 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-08 23:40:20,105 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [816628540] [2020-07-08 23:40:20,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-08 23:40:20,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-08 23:40:20,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417341180] [2020-07-08 23:40:20,107 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2020-07-08 23:40:20,107 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-08 23:40:20,107 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states. [2020-07-08 23:40:20,138 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 32 edges. 32 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 23:40:20,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-08 23:40:20,138 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-08 23:40:20,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-08 23:40:20,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-08 23:40:20,139 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand 5 states. [2020-07-08 23:40:20,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 23:40:20,500 INFO L93 Difference]: Finished difference Result 86 states and 98 transitions. [2020-07-08 23:40:20,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-08 23:40:20,501 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2020-07-08 23:40:20,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-08 23:40:20,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-08 23:40:20,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 74 transitions. [2020-07-08 23:40:20,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-08 23:40:20,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 74 transitions. [2020-07-08 23:40:20,507 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states and 74 transitions. [2020-07-08 23:40:20,591 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 74 edges. 74 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 23:40:20,594 INFO L225 Difference]: With dead ends: 86 [2020-07-08 23:40:20,595 INFO L226 Difference]: Without dead ends: 84 [2020-07-08 23:40:20,595 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 [2020-07-08 23:40:20,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-07-08 23:40:20,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 80. [2020-07-08 23:40:20,711 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-08 23:40:20,712 INFO L82 GeneralOperation]: Start isEquivalent. First operand 84 states. Second operand 80 states. [2020-07-08 23:40:20,712 INFO L74 IsIncluded]: Start isIncluded. First operand 84 states. Second operand 80 states. [2020-07-08 23:40:20,712 INFO L87 Difference]: Start difference. First operand 84 states. Second operand 80 states. [2020-07-08 23:40:20,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 23:40:20,717 INFO L93 Difference]: Finished difference Result 84 states and 96 transitions. [2020-07-08 23:40:20,717 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 96 transitions. [2020-07-08 23:40:20,718 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 23:40:20,718 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 23:40:20,719 INFO L74 IsIncluded]: Start isIncluded. First operand 80 states. Second operand 84 states. [2020-07-08 23:40:20,719 INFO L87 Difference]: Start difference. First operand 80 states. Second operand 84 states. [2020-07-08 23:40:20,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 23:40:20,724 INFO L93 Difference]: Finished difference Result 84 states and 96 transitions. [2020-07-08 23:40:20,724 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 96 transitions. [2020-07-08 23:40:20,725 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 23:40:20,725 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 23:40:20,725 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-08 23:40:20,726 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-08 23:40:20,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-07-08 23:40:20,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 92 transitions. [2020-07-08 23:40:20,730 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 92 transitions. Word has length 32 [2020-07-08 23:40:20,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-08 23:40:20,730 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 92 transitions. [2020-07-08 23:40:20,730 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-08 23:40:20,731 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 80 states and 92 transitions. [2020-07-08 23:40:20,843 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 92 edges. 92 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 23:40:20,844 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 92 transitions. [2020-07-08 23:40:20,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-08 23:40:20,844 INFO L414 BasicCegarLoop]: Found error trace [2020-07-08 23:40:20,845 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-08 23:40:20,845 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-08 23:40:20,845 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-08 23:40:20,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-08 23:40:20,846 INFO L82 PathProgramCache]: Analyzing trace with hash -268568898, now seen corresponding path program 1 times [2020-07-08 23:40:20,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-08 23:40:20,846 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [600255293] [2020-07-08 23:40:20,846 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-08 23:40:20,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 23:40:21,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 23:40:21,039 INFO L280 TraceCheckUtils]: 0: Hoare triple {1437#true} assume true; {1437#true} is VALID [2020-07-08 23:40:21,039 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {1437#true} {1437#true} #106#return; {1437#true} is VALID [2020-07-08 23:40:21,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 23:40:21,048 INFO L280 TraceCheckUtils]: 0: Hoare triple {1437#true} ~cond := #in~cond; {1437#true} is VALID [2020-07-08 23:40:21,048 INFO L280 TraceCheckUtils]: 1: Hoare triple {1437#true} assume !(0 == ~cond); {1437#true} is VALID [2020-07-08 23:40:21,049 INFO L280 TraceCheckUtils]: 2: Hoare triple {1437#true} assume true; {1437#true} is VALID [2020-07-08 23:40:21,050 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {1437#true} {1442#(<= (* 2 main_~i~0) main_~k~0)} #110#return; {1442#(<= (* 2 main_~i~0) main_~k~0)} is VALID [2020-07-08 23:40:21,051 INFO L263 TraceCheckUtils]: 0: Hoare triple {1437#true} call ULTIMATE.init(); {1437#true} is VALID [2020-07-08 23:40:21,051 INFO L280 TraceCheckUtils]: 1: Hoare triple {1437#true} assume true; {1437#true} is VALID [2020-07-08 23:40:21,051 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {1437#true} {1437#true} #106#return; {1437#true} is VALID [2020-07-08 23:40:21,051 INFO L263 TraceCheckUtils]: 3: Hoare triple {1437#true} call #t~ret6 := main(); {1437#true} is VALID [2020-07-08 23:40:21,052 INFO L280 TraceCheckUtils]: 4: Hoare triple {1437#true} havoc ~i~0; {1437#true} is VALID [2020-07-08 23:40:21,052 INFO L280 TraceCheckUtils]: 5: Hoare triple {1437#true} havoc ~j~0; {1437#true} is VALID [2020-07-08 23:40:21,052 INFO L280 TraceCheckUtils]: 6: Hoare triple {1437#true} havoc ~k~0; {1437#true} is VALID [2020-07-08 23:40:21,052 INFO L280 TraceCheckUtils]: 7: Hoare triple {1437#true} havoc ~n~0; {1437#true} is VALID [2020-07-08 23:40:21,053 INFO L280 TraceCheckUtils]: 8: Hoare triple {1437#true} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; {1437#true} is VALID [2020-07-08 23:40:21,053 INFO L280 TraceCheckUtils]: 9: Hoare triple {1437#true} ~k~0 := #t~nondet0; {1437#true} is VALID [2020-07-08 23:40:21,053 INFO L280 TraceCheckUtils]: 10: Hoare triple {1437#true} havoc #t~nondet0; {1437#true} is VALID [2020-07-08 23:40:21,053 INFO L280 TraceCheckUtils]: 11: Hoare triple {1437#true} assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647; {1437#true} is VALID [2020-07-08 23:40:21,054 INFO L280 TraceCheckUtils]: 12: Hoare triple {1437#true} ~n~0 := #t~nondet1; {1437#true} is VALID [2020-07-08 23:40:21,054 INFO L280 TraceCheckUtils]: 13: Hoare triple {1437#true} havoc #t~nondet1; {1437#true} is VALID [2020-07-08 23:40:21,054 INFO L280 TraceCheckUtils]: 14: Hoare triple {1437#true} assume !!(~n~0 < 1000000); {1437#true} is VALID [2020-07-08 23:40:21,054 INFO L280 TraceCheckUtils]: 15: Hoare triple {1437#true} assume ~k~0 == ~n~0; {1437#true} is VALID [2020-07-08 23:40:21,055 INFO L280 TraceCheckUtils]: 16: Hoare triple {1437#true} ~i~0 := 0; {1437#true} is VALID [2020-07-08 23:40:21,055 INFO L280 TraceCheckUtils]: 17: Hoare triple {1437#true} assume !!(~i~0 < ~n~0); {1437#true} is VALID [2020-07-08 23:40:21,056 INFO L280 TraceCheckUtils]: 18: Hoare triple {1437#true} ~j~0 := 2 * ~i~0; {1441#(<= (* 2 main_~i~0) main_~j~0)} is VALID [2020-07-08 23:40:21,057 INFO L280 TraceCheckUtils]: 19: Hoare triple {1441#(<= (* 2 main_~i~0) main_~j~0)} assume !!(~j~0 < ~n~0); {1441#(<= (* 2 main_~i~0) main_~j~0)} is VALID [2020-07-08 23:40:21,058 INFO L280 TraceCheckUtils]: 20: Hoare triple {1441#(<= (* 2 main_~i~0) main_~j~0)} assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647; {1441#(<= (* 2 main_~i~0) main_~j~0)} is VALID [2020-07-08 23:40:21,059 INFO L280 TraceCheckUtils]: 21: Hoare triple {1441#(<= (* 2 main_~i~0) main_~j~0)} assume 0 != #t~nondet4; {1441#(<= (* 2 main_~i~0) main_~j~0)} is VALID [2020-07-08 23:40:21,061 INFO L280 TraceCheckUtils]: 22: Hoare triple {1441#(<= (* 2 main_~i~0) main_~j~0)} havoc #t~nondet4; {1441#(<= (* 2 main_~i~0) main_~j~0)} is VALID [2020-07-08 23:40:21,062 INFO L280 TraceCheckUtils]: 23: Hoare triple {1441#(<= (* 2 main_~i~0) main_~j~0)} ~k~0 := ~j~0; {1442#(<= (* 2 main_~i~0) main_~k~0)} is VALID [2020-07-08 23:40:21,063 INFO L280 TraceCheckUtils]: 24: Hoare triple {1442#(<= (* 2 main_~i~0) main_~k~0)} assume !!(~k~0 < ~n~0); {1442#(<= (* 2 main_~i~0) main_~k~0)} is VALID [2020-07-08 23:40:21,063 INFO L263 TraceCheckUtils]: 25: Hoare triple {1442#(<= (* 2 main_~i~0) main_~k~0)} call __VERIFIER_assert((if ~k~0 >= 2 * ~i~0 then 1 else 0)); {1437#true} is VALID [2020-07-08 23:40:21,063 INFO L280 TraceCheckUtils]: 26: Hoare triple {1437#true} ~cond := #in~cond; {1437#true} is VALID [2020-07-08 23:40:21,064 INFO L280 TraceCheckUtils]: 27: Hoare triple {1437#true} assume !(0 == ~cond); {1437#true} is VALID [2020-07-08 23:40:21,064 INFO L280 TraceCheckUtils]: 28: Hoare triple {1437#true} assume true; {1437#true} is VALID [2020-07-08 23:40:21,065 INFO L275 TraceCheckUtils]: 29: Hoare quadruple {1437#true} {1442#(<= (* 2 main_~i~0) main_~k~0)} #110#return; {1442#(<= (* 2 main_~i~0) main_~k~0)} is VALID [2020-07-08 23:40:21,065 INFO L280 TraceCheckUtils]: 30: Hoare triple {1442#(<= (* 2 main_~i~0) main_~k~0)} #t~post5 := ~k~0; {1447#(<= (* 2 main_~i~0) |main_#t~post5|)} is VALID [2020-07-08 23:40:21,066 INFO L280 TraceCheckUtils]: 31: Hoare triple {1447#(<= (* 2 main_~i~0) |main_#t~post5|)} ~k~0 := 1 + #t~post5; {1448#(<= (+ (* 2 main_~i~0) 1) main_~k~0)} is VALID [2020-07-08 23:40:21,067 INFO L280 TraceCheckUtils]: 32: Hoare triple {1448#(<= (+ (* 2 main_~i~0) 1) main_~k~0)} havoc #t~post5; {1448#(<= (+ (* 2 main_~i~0) 1) main_~k~0)} is VALID [2020-07-08 23:40:21,067 INFO L280 TraceCheckUtils]: 33: Hoare triple {1448#(<= (+ (* 2 main_~i~0) 1) main_~k~0)} assume !!(~k~0 < ~n~0); {1448#(<= (+ (* 2 main_~i~0) 1) main_~k~0)} is VALID [2020-07-08 23:40:21,068 INFO L263 TraceCheckUtils]: 34: Hoare triple {1448#(<= (+ (* 2 main_~i~0) 1) main_~k~0)} call __VERIFIER_assert((if ~k~0 >= 2 * ~i~0 then 1 else 0)); {1449#(not (= 0 |__VERIFIER_assert_#in~cond|))} is VALID [2020-07-08 23:40:21,069 INFO L280 TraceCheckUtils]: 35: Hoare triple {1449#(not (= 0 |__VERIFIER_assert_#in~cond|))} ~cond := #in~cond; {1450#(not (= 0 __VERIFIER_assert_~cond))} is VALID [2020-07-08 23:40:21,070 INFO L280 TraceCheckUtils]: 36: Hoare triple {1450#(not (= 0 __VERIFIER_assert_~cond))} assume 0 == ~cond; {1438#false} is VALID [2020-07-08 23:40:21,070 INFO L280 TraceCheckUtils]: 37: Hoare triple {1438#false} assume !false; {1438#false} is VALID [2020-07-08 23:40:21,073 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-08 23:40:21,074 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [600255293] [2020-07-08 23:40:21,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-08 23:40:21,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-08 23:40:21,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534256808] [2020-07-08 23:40:21,075 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2020-07-08 23:40:21,075 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-08 23:40:21,076 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 8 states. [2020-07-08 23:40:21,123 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 38 edges. 38 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 23:40:21,124 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-08 23:40:21,124 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-08 23:40:21,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-08 23:40:21,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-07-08 23:40:21,125 INFO L87 Difference]: Start difference. First operand 80 states and 92 transitions. Second operand 8 states. [2020-07-08 23:40:22,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 23:40:22,111 INFO L93 Difference]: Finished difference Result 137 states and 162 transitions. [2020-07-08 23:40:22,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-08 23:40:22,111 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2020-07-08 23:40:22,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-08 23:40:22,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-07-08 23:40:22,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 121 transitions. [2020-07-08 23:40:22,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-07-08 23:40:22,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 121 transitions. [2020-07-08 23:40:22,120 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 12 states and 121 transitions. [2020-07-08 23:40:22,259 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 121 edges. 121 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 23:40:22,264 INFO L225 Difference]: With dead ends: 137 [2020-07-08 23:40:22,265 INFO L226 Difference]: Without dead ends: 135 [2020-07-08 23:40:22,266 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-07-08 23:40:22,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-07-08 23:40:22,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 83. [2020-07-08 23:40:22,413 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-08 23:40:22,413 INFO L82 GeneralOperation]: Start isEquivalent. First operand 135 states. Second operand 83 states. [2020-07-08 23:40:22,413 INFO L74 IsIncluded]: Start isIncluded. First operand 135 states. Second operand 83 states. [2020-07-08 23:40:22,414 INFO L87 Difference]: Start difference. First operand 135 states. Second operand 83 states. [2020-07-08 23:40:22,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 23:40:22,422 INFO L93 Difference]: Finished difference Result 135 states and 160 transitions. [2020-07-08 23:40:22,422 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 160 transitions. [2020-07-08 23:40:22,423 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 23:40:22,423 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 23:40:22,424 INFO L74 IsIncluded]: Start isIncluded. First operand 83 states. Second operand 135 states. [2020-07-08 23:40:22,424 INFO L87 Difference]: Start difference. First operand 83 states. Second operand 135 states. [2020-07-08 23:40:22,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 23:40:22,431 INFO L93 Difference]: Finished difference Result 135 states and 160 transitions. [2020-07-08 23:40:22,431 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 160 transitions. [2020-07-08 23:40:22,432 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 23:40:22,432 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 23:40:22,432 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-08 23:40:22,432 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-08 23:40:22,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-07-08 23:40:22,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 95 transitions. [2020-07-08 23:40:22,436 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 95 transitions. Word has length 38 [2020-07-08 23:40:22,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-08 23:40:22,436 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 95 transitions. [2020-07-08 23:40:22,437 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-08 23:40:22,437 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 83 states and 95 transitions. [2020-07-08 23:40:22,555 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 95 edges. 95 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 23:40:22,555 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 95 transitions. [2020-07-08 23:40:22,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-08 23:40:22,556 INFO L414 BasicCegarLoop]: Found error trace [2020-07-08 23:40:22,557 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-08 23:40:22,557 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-08 23:40:22,557 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-08 23:40:22,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-08 23:40:22,558 INFO L82 PathProgramCache]: Analyzing trace with hash -360550748, now seen corresponding path program 1 times [2020-07-08 23:40:22,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-08 23:40:22,559 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [630131295] [2020-07-08 23:40:22,559 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-08 23:40:22,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 23:40:22,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 23:40:22,631 INFO L280 TraceCheckUtils]: 0: Hoare triple {2173#true} assume true; {2173#true} is VALID [2020-07-08 23:40:22,631 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {2173#true} {2173#true} #106#return; {2173#true} is VALID [2020-07-08 23:40:22,632 INFO L263 TraceCheckUtils]: 0: Hoare triple {2173#true} call ULTIMATE.init(); {2173#true} is VALID [2020-07-08 23:40:22,632 INFO L280 TraceCheckUtils]: 1: Hoare triple {2173#true} assume true; {2173#true} is VALID [2020-07-08 23:40:22,632 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {2173#true} {2173#true} #106#return; {2173#true} is VALID [2020-07-08 23:40:22,633 INFO L263 TraceCheckUtils]: 3: Hoare triple {2173#true} call #t~ret6 := main(); {2173#true} is VALID [2020-07-08 23:40:22,633 INFO L280 TraceCheckUtils]: 4: Hoare triple {2173#true} havoc ~i~0; {2173#true} is VALID [2020-07-08 23:40:22,633 INFO L280 TraceCheckUtils]: 5: Hoare triple {2173#true} havoc ~j~0; {2173#true} is VALID [2020-07-08 23:40:22,633 INFO L280 TraceCheckUtils]: 6: Hoare triple {2173#true} havoc ~k~0; {2173#true} is VALID [2020-07-08 23:40:22,634 INFO L280 TraceCheckUtils]: 7: Hoare triple {2173#true} havoc ~n~0; {2173#true} is VALID [2020-07-08 23:40:22,634 INFO L280 TraceCheckUtils]: 8: Hoare triple {2173#true} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; {2173#true} is VALID [2020-07-08 23:40:22,634 INFO L280 TraceCheckUtils]: 9: Hoare triple {2173#true} ~k~0 := #t~nondet0; {2173#true} is VALID [2020-07-08 23:40:22,634 INFO L280 TraceCheckUtils]: 10: Hoare triple {2173#true} havoc #t~nondet0; {2173#true} is VALID [2020-07-08 23:40:22,634 INFO L280 TraceCheckUtils]: 11: Hoare triple {2173#true} assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647; {2173#true} is VALID [2020-07-08 23:40:22,635 INFO L280 TraceCheckUtils]: 12: Hoare triple {2173#true} ~n~0 := #t~nondet1; {2173#true} is VALID [2020-07-08 23:40:22,635 INFO L280 TraceCheckUtils]: 13: Hoare triple {2173#true} havoc #t~nondet1; {2173#true} is VALID [2020-07-08 23:40:22,635 INFO L280 TraceCheckUtils]: 14: Hoare triple {2173#true} assume !!(~n~0 < 1000000); {2173#true} is VALID [2020-07-08 23:40:22,635 INFO L280 TraceCheckUtils]: 15: Hoare triple {2173#true} assume ~k~0 == ~n~0; {2173#true} is VALID [2020-07-08 23:40:22,640 INFO L280 TraceCheckUtils]: 16: Hoare triple {2173#true} ~i~0 := 0; {2177#(<= main_~i~0 0)} is VALID [2020-07-08 23:40:22,646 INFO L280 TraceCheckUtils]: 17: Hoare triple {2177#(<= main_~i~0 0)} assume !!(~i~0 < ~n~0); {2178#(<= (+ (* 2 main_~i~0) 1) main_~n~0)} is VALID [2020-07-08 23:40:22,649 INFO L280 TraceCheckUtils]: 18: Hoare triple {2178#(<= (+ (* 2 main_~i~0) 1) main_~n~0)} ~j~0 := 2 * ~i~0; {2179#(<= (+ main_~j~0 1) main_~n~0)} is VALID [2020-07-08 23:40:22,650 INFO L280 TraceCheckUtils]: 19: Hoare triple {2179#(<= (+ main_~j~0 1) main_~n~0)} assume !!(~j~0 < ~n~0); {2179#(<= (+ main_~j~0 1) main_~n~0)} is VALID [2020-07-08 23:40:22,651 INFO L280 TraceCheckUtils]: 20: Hoare triple {2179#(<= (+ main_~j~0 1) main_~n~0)} assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647; {2179#(<= (+ main_~j~0 1) main_~n~0)} is VALID [2020-07-08 23:40:22,651 INFO L280 TraceCheckUtils]: 21: Hoare triple {2179#(<= (+ main_~j~0 1) main_~n~0)} assume 0 != #t~nondet4; {2179#(<= (+ main_~j~0 1) main_~n~0)} is VALID [2020-07-08 23:40:22,652 INFO L280 TraceCheckUtils]: 22: Hoare triple {2179#(<= (+ main_~j~0 1) main_~n~0)} havoc #t~nondet4; {2179#(<= (+ main_~j~0 1) main_~n~0)} is VALID [2020-07-08 23:40:22,653 INFO L280 TraceCheckUtils]: 23: Hoare triple {2179#(<= (+ main_~j~0 1) main_~n~0)} ~k~0 := ~j~0; {2180#(<= (+ main_~k~0 1) main_~n~0)} is VALID [2020-07-08 23:40:22,654 INFO L280 TraceCheckUtils]: 24: Hoare triple {2180#(<= (+ main_~k~0 1) main_~n~0)} assume !(~k~0 < ~n~0); {2174#false} is VALID [2020-07-08 23:40:22,654 INFO L280 TraceCheckUtils]: 25: Hoare triple {2174#false} #t~post3 := ~j~0; {2174#false} is VALID [2020-07-08 23:40:22,654 INFO L280 TraceCheckUtils]: 26: Hoare triple {2174#false} ~j~0 := 1 + #t~post3; {2174#false} is VALID [2020-07-08 23:40:22,654 INFO L280 TraceCheckUtils]: 27: Hoare triple {2174#false} havoc #t~post3; {2174#false} is VALID [2020-07-08 23:40:22,655 INFO L280 TraceCheckUtils]: 28: Hoare triple {2174#false} assume !!(~j~0 < ~n~0); {2174#false} is VALID [2020-07-08 23:40:22,655 INFO L280 TraceCheckUtils]: 29: Hoare triple {2174#false} assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647; {2174#false} is VALID [2020-07-08 23:40:22,655 INFO L280 TraceCheckUtils]: 30: Hoare triple {2174#false} assume 0 != #t~nondet4; {2174#false} is VALID [2020-07-08 23:40:22,655 INFO L280 TraceCheckUtils]: 31: Hoare triple {2174#false} havoc #t~nondet4; {2174#false} is VALID [2020-07-08 23:40:22,656 INFO L280 TraceCheckUtils]: 32: Hoare triple {2174#false} ~k~0 := ~j~0; {2174#false} is VALID [2020-07-08 23:40:22,656 INFO L280 TraceCheckUtils]: 33: Hoare triple {2174#false} assume !!(~k~0 < ~n~0); {2174#false} is VALID [2020-07-08 23:40:22,656 INFO L263 TraceCheckUtils]: 34: Hoare triple {2174#false} call __VERIFIER_assert((if ~k~0 >= 2 * ~i~0 then 1 else 0)); {2174#false} is VALID [2020-07-08 23:40:22,656 INFO L280 TraceCheckUtils]: 35: Hoare triple {2174#false} ~cond := #in~cond; {2174#false} is VALID [2020-07-08 23:40:22,657 INFO L280 TraceCheckUtils]: 36: Hoare triple {2174#false} assume 0 == ~cond; {2174#false} is VALID [2020-07-08 23:40:22,657 INFO L280 TraceCheckUtils]: 37: Hoare triple {2174#false} assume !false; {2174#false} is VALID [2020-07-08 23:40:22,659 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-08 23:40:22,659 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [630131295] [2020-07-08 23:40:22,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-08 23:40:22,659 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-08 23:40:22,660 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788446291] [2020-07-08 23:40:22,660 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-07-08 23:40:22,660 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-08 23:40:22,660 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states. [2020-07-08 23:40:22,698 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 38 edges. 38 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 23:40:22,698 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-08 23:40:22,699 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-08 23:40:22,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-08 23:40:22,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-08 23:40:22,699 INFO L87 Difference]: Start difference. First operand 83 states and 95 transitions. Second operand 6 states. [2020-07-08 23:40:23,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 23:40:23,426 INFO L93 Difference]: Finished difference Result 194 states and 236 transitions. [2020-07-08 23:40:23,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-08 23:40:23,426 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-07-08 23:40:23,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-08 23:40:23,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-08 23:40:23,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 113 transitions. [2020-07-08 23:40:23,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-08 23:40:23,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 113 transitions. [2020-07-08 23:40:23,433 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 8 states and 113 transitions. [2020-07-08 23:40:23,569 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 113 edges. 113 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 23:40:23,577 INFO L225 Difference]: With dead ends: 194 [2020-07-08 23:40:23,577 INFO L226 Difference]: Without dead ends: 128 [2020-07-08 23:40:23,579 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-07-08 23:40:23,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-07-08 23:40:23,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 88. [2020-07-08 23:40:23,772 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-08 23:40:23,772 INFO L82 GeneralOperation]: Start isEquivalent. First operand 128 states. Second operand 88 states. [2020-07-08 23:40:23,772 INFO L74 IsIncluded]: Start isIncluded. First operand 128 states. Second operand 88 states. [2020-07-08 23:40:23,772 INFO L87 Difference]: Start difference. First operand 128 states. Second operand 88 states. [2020-07-08 23:40:23,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 23:40:23,782 INFO L93 Difference]: Finished difference Result 128 states and 153 transitions. [2020-07-08 23:40:23,782 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 153 transitions. [2020-07-08 23:40:23,783 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 23:40:23,783 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 23:40:23,783 INFO L74 IsIncluded]: Start isIncluded. First operand 88 states. Second operand 128 states. [2020-07-08 23:40:23,783 INFO L87 Difference]: Start difference. First operand 88 states. Second operand 128 states. [2020-07-08 23:40:23,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 23:40:23,792 INFO L93 Difference]: Finished difference Result 128 states and 153 transitions. [2020-07-08 23:40:23,792 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 153 transitions. [2020-07-08 23:40:23,793 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 23:40:23,793 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 23:40:23,793 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-08 23:40:23,794 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-08 23:40:23,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-07-08 23:40:23,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 100 transitions. [2020-07-08 23:40:23,799 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 100 transitions. Word has length 38 [2020-07-08 23:40:23,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-08 23:40:23,799 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 100 transitions. [2020-07-08 23:40:23,799 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-08 23:40:23,799 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 88 states and 100 transitions. [2020-07-08 23:40:23,953 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 100 edges. 100 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 23:40:23,954 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 100 transitions. [2020-07-08 23:40:23,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-07-08 23:40:23,955 INFO L414 BasicCegarLoop]: Found error trace [2020-07-08 23:40:23,955 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-08 23:40:23,955 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-08 23:40:23,956 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-08 23:40:23,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-08 23:40:23,956 INFO L82 PathProgramCache]: Analyzing trace with hash 1447898534, now seen corresponding path program 1 times [2020-07-08 23:40:23,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-08 23:40:23,956 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [652106024] [2020-07-08 23:40:23,957 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-08 23:40:23,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 23:40:24,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 23:40:24,078 INFO L280 TraceCheckUtils]: 0: Hoare triple {3011#true} assume true; {3011#true} is VALID [2020-07-08 23:40:24,078 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {3011#true} {3011#true} #106#return; {3011#true} is VALID [2020-07-08 23:40:24,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 23:40:24,090 INFO L280 TraceCheckUtils]: 0: Hoare triple {3011#true} ~cond := #in~cond; {3011#true} is VALID [2020-07-08 23:40:24,091 INFO L280 TraceCheckUtils]: 1: Hoare triple {3011#true} assume !(0 == ~cond); {3011#true} is VALID [2020-07-08 23:40:24,091 INFO L280 TraceCheckUtils]: 2: Hoare triple {3011#true} assume true; {3011#true} is VALID [2020-07-08 23:40:24,093 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {3011#true} {3015#(<= (* 2 main_~i~0) main_~j~0)} #112#return; {3015#(<= (* 2 main_~i~0) main_~j~0)} is VALID [2020-07-08 23:40:24,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 23:40:24,114 INFO L280 TraceCheckUtils]: 0: Hoare triple {3011#true} ~cond := #in~cond; {3011#true} is VALID [2020-07-08 23:40:24,115 INFO L280 TraceCheckUtils]: 1: Hoare triple {3011#true} assume !(0 == ~cond); {3011#true} is VALID [2020-07-08 23:40:24,115 INFO L280 TraceCheckUtils]: 2: Hoare triple {3011#true} assume true; {3011#true} is VALID [2020-07-08 23:40:24,116 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {3011#true} {3015#(<= (* 2 main_~i~0) main_~j~0)} #114#return; {3015#(<= (* 2 main_~i~0) main_~j~0)} is VALID [2020-07-08 23:40:24,116 INFO L263 TraceCheckUtils]: 0: Hoare triple {3011#true} call ULTIMATE.init(); {3011#true} is VALID [2020-07-08 23:40:24,116 INFO L280 TraceCheckUtils]: 1: Hoare triple {3011#true} assume true; {3011#true} is VALID [2020-07-08 23:40:24,117 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {3011#true} {3011#true} #106#return; {3011#true} is VALID [2020-07-08 23:40:24,117 INFO L263 TraceCheckUtils]: 3: Hoare triple {3011#true} call #t~ret6 := main(); {3011#true} is VALID [2020-07-08 23:40:24,117 INFO L280 TraceCheckUtils]: 4: Hoare triple {3011#true} havoc ~i~0; {3011#true} is VALID [2020-07-08 23:40:24,117 INFO L280 TraceCheckUtils]: 5: Hoare triple {3011#true} havoc ~j~0; {3011#true} is VALID [2020-07-08 23:40:24,117 INFO L280 TraceCheckUtils]: 6: Hoare triple {3011#true} havoc ~k~0; {3011#true} is VALID [2020-07-08 23:40:24,118 INFO L280 TraceCheckUtils]: 7: Hoare triple {3011#true} havoc ~n~0; {3011#true} is VALID [2020-07-08 23:40:24,118 INFO L280 TraceCheckUtils]: 8: Hoare triple {3011#true} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; {3011#true} is VALID [2020-07-08 23:40:24,118 INFO L280 TraceCheckUtils]: 9: Hoare triple {3011#true} ~k~0 := #t~nondet0; {3011#true} is VALID [2020-07-08 23:40:24,118 INFO L280 TraceCheckUtils]: 10: Hoare triple {3011#true} havoc #t~nondet0; {3011#true} is VALID [2020-07-08 23:40:24,119 INFO L280 TraceCheckUtils]: 11: Hoare triple {3011#true} assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647; {3011#true} is VALID [2020-07-08 23:40:24,119 INFO L280 TraceCheckUtils]: 12: Hoare triple {3011#true} ~n~0 := #t~nondet1; {3011#true} is VALID [2020-07-08 23:40:24,119 INFO L280 TraceCheckUtils]: 13: Hoare triple {3011#true} havoc #t~nondet1; {3011#true} is VALID [2020-07-08 23:40:24,123 INFO L280 TraceCheckUtils]: 14: Hoare triple {3011#true} assume !!(~n~0 < 1000000); {3011#true} is VALID [2020-07-08 23:40:24,123 INFO L280 TraceCheckUtils]: 15: Hoare triple {3011#true} assume ~k~0 == ~n~0; {3011#true} is VALID [2020-07-08 23:40:24,123 INFO L280 TraceCheckUtils]: 16: Hoare triple {3011#true} ~i~0 := 0; {3011#true} is VALID [2020-07-08 23:40:24,123 INFO L280 TraceCheckUtils]: 17: Hoare triple {3011#true} assume !!(~i~0 < ~n~0); {3011#true} is VALID [2020-07-08 23:40:24,125 INFO L280 TraceCheckUtils]: 18: Hoare triple {3011#true} ~j~0 := 2 * ~i~0; {3015#(<= (* 2 main_~i~0) main_~j~0)} is VALID [2020-07-08 23:40:24,126 INFO L280 TraceCheckUtils]: 19: Hoare triple {3015#(<= (* 2 main_~i~0) main_~j~0)} assume !!(~j~0 < ~n~0); {3015#(<= (* 2 main_~i~0) main_~j~0)} is VALID [2020-07-08 23:40:24,126 INFO L280 TraceCheckUtils]: 20: Hoare triple {3015#(<= (* 2 main_~i~0) main_~j~0)} assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647; {3015#(<= (* 2 main_~i~0) main_~j~0)} is VALID [2020-07-08 23:40:24,127 INFO L280 TraceCheckUtils]: 21: Hoare triple {3015#(<= (* 2 main_~i~0) main_~j~0)} assume !(0 != #t~nondet4); {3015#(<= (* 2 main_~i~0) main_~j~0)} is VALID [2020-07-08 23:40:24,127 INFO L280 TraceCheckUtils]: 22: Hoare triple {3015#(<= (* 2 main_~i~0) main_~j~0)} havoc #t~nondet4; {3015#(<= (* 2 main_~i~0) main_~j~0)} is VALID [2020-07-08 23:40:24,127 INFO L263 TraceCheckUtils]: 23: Hoare triple {3015#(<= (* 2 main_~i~0) main_~j~0)} call __VERIFIER_assert((if ~k~0 >= ~n~0 then 1 else 0)); {3011#true} is VALID [2020-07-08 23:40:24,127 INFO L280 TraceCheckUtils]: 24: Hoare triple {3011#true} ~cond := #in~cond; {3011#true} is VALID [2020-07-08 23:40:24,128 INFO L280 TraceCheckUtils]: 25: Hoare triple {3011#true} assume !(0 == ~cond); {3011#true} is VALID [2020-07-08 23:40:24,128 INFO L280 TraceCheckUtils]: 26: Hoare triple {3011#true} assume true; {3011#true} is VALID [2020-07-08 23:40:24,128 INFO L275 TraceCheckUtils]: 27: Hoare quadruple {3011#true} {3015#(<= (* 2 main_~i~0) main_~j~0)} #112#return; {3015#(<= (* 2 main_~i~0) main_~j~0)} is VALID [2020-07-08 23:40:24,129 INFO L263 TraceCheckUtils]: 28: Hoare triple {3015#(<= (* 2 main_~i~0) main_~j~0)} call __VERIFIER_assert((if ~k~0 <= ~n~0 then 1 else 0)); {3011#true} is VALID [2020-07-08 23:40:24,129 INFO L280 TraceCheckUtils]: 29: Hoare triple {3011#true} ~cond := #in~cond; {3011#true} is VALID [2020-07-08 23:40:24,129 INFO L280 TraceCheckUtils]: 30: Hoare triple {3011#true} assume !(0 == ~cond); {3011#true} is VALID [2020-07-08 23:40:24,129 INFO L280 TraceCheckUtils]: 31: Hoare triple {3011#true} assume true; {3011#true} is VALID [2020-07-08 23:40:24,130 INFO L275 TraceCheckUtils]: 32: Hoare quadruple {3011#true} {3015#(<= (* 2 main_~i~0) main_~j~0)} #114#return; {3015#(<= (* 2 main_~i~0) main_~j~0)} is VALID [2020-07-08 23:40:24,130 INFO L280 TraceCheckUtils]: 33: Hoare triple {3015#(<= (* 2 main_~i~0) main_~j~0)} #t~post3 := ~j~0; {3024#(<= (* 2 main_~i~0) |main_#t~post3|)} is VALID [2020-07-08 23:40:24,131 INFO L280 TraceCheckUtils]: 34: Hoare triple {3024#(<= (* 2 main_~i~0) |main_#t~post3|)} ~j~0 := 1 + #t~post3; {3025#(<= (+ (* 2 main_~i~0) 1) main_~j~0)} is VALID [2020-07-08 23:40:24,131 INFO L280 TraceCheckUtils]: 35: Hoare triple {3025#(<= (+ (* 2 main_~i~0) 1) main_~j~0)} havoc #t~post3; {3025#(<= (+ (* 2 main_~i~0) 1) main_~j~0)} is VALID [2020-07-08 23:40:24,132 INFO L280 TraceCheckUtils]: 36: Hoare triple {3025#(<= (+ (* 2 main_~i~0) 1) main_~j~0)} assume !!(~j~0 < ~n~0); {3025#(<= (+ (* 2 main_~i~0) 1) main_~j~0)} is VALID [2020-07-08 23:40:24,133 INFO L280 TraceCheckUtils]: 37: Hoare triple {3025#(<= (+ (* 2 main_~i~0) 1) main_~j~0)} assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647; {3025#(<= (+ (* 2 main_~i~0) 1) main_~j~0)} is VALID [2020-07-08 23:40:24,134 INFO L280 TraceCheckUtils]: 38: Hoare triple {3025#(<= (+ (* 2 main_~i~0) 1) main_~j~0)} assume 0 != #t~nondet4; {3025#(<= (+ (* 2 main_~i~0) 1) main_~j~0)} is VALID [2020-07-08 23:40:24,134 INFO L280 TraceCheckUtils]: 39: Hoare triple {3025#(<= (+ (* 2 main_~i~0) 1) main_~j~0)} havoc #t~nondet4; {3025#(<= (+ (* 2 main_~i~0) 1) main_~j~0)} is VALID [2020-07-08 23:40:24,135 INFO L280 TraceCheckUtils]: 40: Hoare triple {3025#(<= (+ (* 2 main_~i~0) 1) main_~j~0)} ~k~0 := ~j~0; {3026#(<= (+ (* 2 main_~i~0) 1) main_~k~0)} is VALID [2020-07-08 23:40:24,135 INFO L280 TraceCheckUtils]: 41: Hoare triple {3026#(<= (+ (* 2 main_~i~0) 1) main_~k~0)} assume !!(~k~0 < ~n~0); {3026#(<= (+ (* 2 main_~i~0) 1) main_~k~0)} is VALID [2020-07-08 23:40:24,136 INFO L263 TraceCheckUtils]: 42: Hoare triple {3026#(<= (+ (* 2 main_~i~0) 1) main_~k~0)} call __VERIFIER_assert((if ~k~0 >= 2 * ~i~0 then 1 else 0)); {3027#(not (= 0 |__VERIFIER_assert_#in~cond|))} is VALID [2020-07-08 23:40:24,137 INFO L280 TraceCheckUtils]: 43: Hoare triple {3027#(not (= 0 |__VERIFIER_assert_#in~cond|))} ~cond := #in~cond; {3028#(not (= 0 __VERIFIER_assert_~cond))} is VALID [2020-07-08 23:40:24,138 INFO L280 TraceCheckUtils]: 44: Hoare triple {3028#(not (= 0 __VERIFIER_assert_~cond))} assume 0 == ~cond; {3012#false} is VALID [2020-07-08 23:40:24,138 INFO L280 TraceCheckUtils]: 45: Hoare triple {3012#false} assume !false; {3012#false} is VALID [2020-07-08 23:40:24,142 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-08 23:40:24,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [652106024] [2020-07-08 23:40:24,143 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-08 23:40:24,143 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-08 23:40:24,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546340802] [2020-07-08 23:40:24,144 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 46 [2020-07-08 23:40:24,144 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-08 23:40:24,144 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 8 states. [2020-07-08 23:40:24,184 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 43 edges. 43 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 23:40:24,184 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-08 23:40:24,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-08 23:40:24,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-08 23:40:24,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-07-08 23:40:24,185 INFO L87 Difference]: Start difference. First operand 88 states and 100 transitions. Second operand 8 states. [2020-07-08 23:40:25,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 23:40:25,045 INFO L93 Difference]: Finished difference Result 111 states and 127 transitions. [2020-07-08 23:40:25,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-08 23:40:25,045 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 46 [2020-07-08 23:40:25,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-08 23:40:25,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-07-08 23:40:25,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 82 transitions. [2020-07-08 23:40:25,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-07-08 23:40:25,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 82 transitions. [2020-07-08 23:40:25,051 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 10 states and 82 transitions. [2020-07-08 23:40:25,151 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 82 edges. 82 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 23:40:25,155 INFO L225 Difference]: With dead ends: 111 [2020-07-08 23:40:25,155 INFO L226 Difference]: Without dead ends: 109 [2020-07-08 23:40:25,156 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-07-08 23:40:25,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-07-08 23:40:25,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 93. [2020-07-08 23:40:25,357 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-08 23:40:25,357 INFO L82 GeneralOperation]: Start isEquivalent. First operand 109 states. Second operand 93 states. [2020-07-08 23:40:25,358 INFO L74 IsIncluded]: Start isIncluded. First operand 109 states. Second operand 93 states. [2020-07-08 23:40:25,358 INFO L87 Difference]: Start difference. First operand 109 states. Second operand 93 states. [2020-07-08 23:40:25,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 23:40:25,365 INFO L93 Difference]: Finished difference Result 109 states and 125 transitions. [2020-07-08 23:40:25,365 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 125 transitions. [2020-07-08 23:40:25,366 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 23:40:25,366 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 23:40:25,366 INFO L74 IsIncluded]: Start isIncluded. First operand 93 states. Second operand 109 states. [2020-07-08 23:40:25,366 INFO L87 Difference]: Start difference. First operand 93 states. Second operand 109 states. [2020-07-08 23:40:25,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 23:40:25,371 INFO L93 Difference]: Finished difference Result 109 states and 125 transitions. [2020-07-08 23:40:25,371 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 125 transitions. [2020-07-08 23:40:25,372 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 23:40:25,372 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 23:40:25,372 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-08 23:40:25,372 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-08 23:40:25,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-07-08 23:40:25,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 105 transitions. [2020-07-08 23:40:25,377 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 105 transitions. Word has length 46 [2020-07-08 23:40:25,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-08 23:40:25,378 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 105 transitions. [2020-07-08 23:40:25,378 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-08 23:40:25,379 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 93 states and 105 transitions. [2020-07-08 23:40:25,547 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 105 edges. 105 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 23:40:25,547 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 105 transitions. [2020-07-08 23:40:25,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-07-08 23:40:25,549 INFO L414 BasicCegarLoop]: Found error trace [2020-07-08 23:40:25,549 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-08 23:40:25,549 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-08 23:40:25,550 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-08 23:40:25,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-08 23:40:25,550 INFO L82 PathProgramCache]: Analyzing trace with hash 87970788, now seen corresponding path program 1 times [2020-07-08 23:40:25,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-08 23:40:25,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [157199126] [2020-07-08 23:40:25,551 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-08 23:40:25,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 23:40:25,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 23:40:25,717 INFO L280 TraceCheckUtils]: 0: Hoare triple {3665#true} assume true; {3665#true} is VALID [2020-07-08 23:40:25,717 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {3665#true} {3665#true} #106#return; {3665#true} is VALID [2020-07-08 23:40:25,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 23:40:25,743 INFO L280 TraceCheckUtils]: 0: Hoare triple {3665#true} ~cond := #in~cond; {3665#true} is VALID [2020-07-08 23:40:25,743 INFO L280 TraceCheckUtils]: 1: Hoare triple {3665#true} assume !(0 == ~cond); {3665#true} is VALID [2020-07-08 23:40:25,744 INFO L280 TraceCheckUtils]: 2: Hoare triple {3665#true} assume true; {3665#true} is VALID [2020-07-08 23:40:25,745 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {3665#true} {3672#(<= (+ main_~k~0 1) main_~n~0)} #110#return; {3672#(<= (+ main_~k~0 1) main_~n~0)} is VALID [2020-07-08 23:40:25,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 23:40:25,766 INFO L280 TraceCheckUtils]: 0: Hoare triple {3665#true} ~cond := #in~cond; {3665#true} is VALID [2020-07-08 23:40:25,767 INFO L280 TraceCheckUtils]: 1: Hoare triple {3665#true} assume !(0 == ~cond); {3665#true} is VALID [2020-07-08 23:40:25,767 INFO L280 TraceCheckUtils]: 2: Hoare triple {3665#true} assume true; {3665#true} is VALID [2020-07-08 23:40:25,769 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {3665#true} {3678#(<= main_~k~0 main_~n~0)} #112#return; {3678#(<= main_~k~0 main_~n~0)} is VALID [2020-07-08 23:40:25,769 INFO L263 TraceCheckUtils]: 0: Hoare triple {3665#true} call ULTIMATE.init(); {3665#true} is VALID [2020-07-08 23:40:25,770 INFO L280 TraceCheckUtils]: 1: Hoare triple {3665#true} assume true; {3665#true} is VALID [2020-07-08 23:40:25,770 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {3665#true} {3665#true} #106#return; {3665#true} is VALID [2020-07-08 23:40:25,770 INFO L263 TraceCheckUtils]: 3: Hoare triple {3665#true} call #t~ret6 := main(); {3665#true} is VALID [2020-07-08 23:40:25,771 INFO L280 TraceCheckUtils]: 4: Hoare triple {3665#true} havoc ~i~0; {3665#true} is VALID [2020-07-08 23:40:25,771 INFO L280 TraceCheckUtils]: 5: Hoare triple {3665#true} havoc ~j~0; {3665#true} is VALID [2020-07-08 23:40:25,771 INFO L280 TraceCheckUtils]: 6: Hoare triple {3665#true} havoc ~k~0; {3665#true} is VALID [2020-07-08 23:40:25,772 INFO L280 TraceCheckUtils]: 7: Hoare triple {3665#true} havoc ~n~0; {3665#true} is VALID [2020-07-08 23:40:25,772 INFO L280 TraceCheckUtils]: 8: Hoare triple {3665#true} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; {3665#true} is VALID [2020-07-08 23:40:25,772 INFO L280 TraceCheckUtils]: 9: Hoare triple {3665#true} ~k~0 := #t~nondet0; {3665#true} is VALID [2020-07-08 23:40:25,772 INFO L280 TraceCheckUtils]: 10: Hoare triple {3665#true} havoc #t~nondet0; {3665#true} is VALID [2020-07-08 23:40:25,773 INFO L280 TraceCheckUtils]: 11: Hoare triple {3665#true} assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647; {3665#true} is VALID [2020-07-08 23:40:25,773 INFO L280 TraceCheckUtils]: 12: Hoare triple {3665#true} ~n~0 := #t~nondet1; {3665#true} is VALID [2020-07-08 23:40:25,773 INFO L280 TraceCheckUtils]: 13: Hoare triple {3665#true} havoc #t~nondet1; {3665#true} is VALID [2020-07-08 23:40:25,774 INFO L280 TraceCheckUtils]: 14: Hoare triple {3665#true} assume !!(~n~0 < 1000000); {3665#true} is VALID [2020-07-08 23:40:25,775 INFO L280 TraceCheckUtils]: 15: Hoare triple {3665#true} assume ~k~0 == ~n~0; {3665#true} is VALID [2020-07-08 23:40:25,775 INFO L280 TraceCheckUtils]: 16: Hoare triple {3665#true} ~i~0 := 0; {3669#(<= main_~i~0 0)} is VALID [2020-07-08 23:40:25,776 INFO L280 TraceCheckUtils]: 17: Hoare triple {3669#(<= main_~i~0 0)} assume !!(~i~0 < ~n~0); {3670#(<= (+ (* 2 main_~i~0) 1) main_~n~0)} is VALID [2020-07-08 23:40:25,777 INFO L280 TraceCheckUtils]: 18: Hoare triple {3670#(<= (+ (* 2 main_~i~0) 1) main_~n~0)} ~j~0 := 2 * ~i~0; {3671#(<= (+ main_~j~0 1) main_~n~0)} is VALID [2020-07-08 23:40:25,778 INFO L280 TraceCheckUtils]: 19: Hoare triple {3671#(<= (+ main_~j~0 1) main_~n~0)} assume !!(~j~0 < ~n~0); {3671#(<= (+ main_~j~0 1) main_~n~0)} is VALID [2020-07-08 23:40:25,779 INFO L280 TraceCheckUtils]: 20: Hoare triple {3671#(<= (+ main_~j~0 1) main_~n~0)} assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647; {3671#(<= (+ main_~j~0 1) main_~n~0)} is VALID [2020-07-08 23:40:25,780 INFO L280 TraceCheckUtils]: 21: Hoare triple {3671#(<= (+ main_~j~0 1) main_~n~0)} assume 0 != #t~nondet4; {3671#(<= (+ main_~j~0 1) main_~n~0)} is VALID [2020-07-08 23:40:25,781 INFO L280 TraceCheckUtils]: 22: Hoare triple {3671#(<= (+ main_~j~0 1) main_~n~0)} havoc #t~nondet4; {3671#(<= (+ main_~j~0 1) main_~n~0)} is VALID [2020-07-08 23:40:25,783 INFO L280 TraceCheckUtils]: 23: Hoare triple {3671#(<= (+ main_~j~0 1) main_~n~0)} ~k~0 := ~j~0; {3672#(<= (+ main_~k~0 1) main_~n~0)} is VALID [2020-07-08 23:40:25,784 INFO L280 TraceCheckUtils]: 24: Hoare triple {3672#(<= (+ main_~k~0 1) main_~n~0)} assume !!(~k~0 < ~n~0); {3672#(<= (+ main_~k~0 1) main_~n~0)} is VALID [2020-07-08 23:40:25,784 INFO L263 TraceCheckUtils]: 25: Hoare triple {3672#(<= (+ main_~k~0 1) main_~n~0)} call __VERIFIER_assert((if ~k~0 >= 2 * ~i~0 then 1 else 0)); {3665#true} is VALID [2020-07-08 23:40:25,784 INFO L280 TraceCheckUtils]: 26: Hoare triple {3665#true} ~cond := #in~cond; {3665#true} is VALID [2020-07-08 23:40:25,785 INFO L280 TraceCheckUtils]: 27: Hoare triple {3665#true} assume !(0 == ~cond); {3665#true} is VALID [2020-07-08 23:40:25,785 INFO L280 TraceCheckUtils]: 28: Hoare triple {3665#true} assume true; {3665#true} is VALID [2020-07-08 23:40:25,788 INFO L275 TraceCheckUtils]: 29: Hoare quadruple {3665#true} {3672#(<= (+ main_~k~0 1) main_~n~0)} #110#return; {3672#(<= (+ main_~k~0 1) main_~n~0)} is VALID [2020-07-08 23:40:25,789 INFO L280 TraceCheckUtils]: 30: Hoare triple {3672#(<= (+ main_~k~0 1) main_~n~0)} #t~post5 := ~k~0; {3677#(<= (+ |main_#t~post5| 1) main_~n~0)} is VALID [2020-07-08 23:40:25,791 INFO L280 TraceCheckUtils]: 31: Hoare triple {3677#(<= (+ |main_#t~post5| 1) main_~n~0)} ~k~0 := 1 + #t~post5; {3678#(<= main_~k~0 main_~n~0)} is VALID [2020-07-08 23:40:25,792 INFO L280 TraceCheckUtils]: 32: Hoare triple {3678#(<= main_~k~0 main_~n~0)} havoc #t~post5; {3678#(<= main_~k~0 main_~n~0)} is VALID [2020-07-08 23:40:25,792 INFO L280 TraceCheckUtils]: 33: Hoare triple {3678#(<= main_~k~0 main_~n~0)} assume !(~k~0 < ~n~0); {3678#(<= main_~k~0 main_~n~0)} is VALID [2020-07-08 23:40:25,793 INFO L280 TraceCheckUtils]: 34: Hoare triple {3678#(<= main_~k~0 main_~n~0)} #t~post3 := ~j~0; {3678#(<= main_~k~0 main_~n~0)} is VALID [2020-07-08 23:40:25,794 INFO L280 TraceCheckUtils]: 35: Hoare triple {3678#(<= main_~k~0 main_~n~0)} ~j~0 := 1 + #t~post3; {3678#(<= main_~k~0 main_~n~0)} is VALID [2020-07-08 23:40:25,795 INFO L280 TraceCheckUtils]: 36: Hoare triple {3678#(<= main_~k~0 main_~n~0)} havoc #t~post3; {3678#(<= main_~k~0 main_~n~0)} is VALID [2020-07-08 23:40:25,796 INFO L280 TraceCheckUtils]: 37: Hoare triple {3678#(<= main_~k~0 main_~n~0)} assume !!(~j~0 < ~n~0); {3678#(<= main_~k~0 main_~n~0)} is VALID [2020-07-08 23:40:25,796 INFO L280 TraceCheckUtils]: 38: Hoare triple {3678#(<= main_~k~0 main_~n~0)} assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647; {3678#(<= main_~k~0 main_~n~0)} is VALID [2020-07-08 23:40:25,797 INFO L280 TraceCheckUtils]: 39: Hoare triple {3678#(<= main_~k~0 main_~n~0)} assume !(0 != #t~nondet4); {3678#(<= main_~k~0 main_~n~0)} is VALID [2020-07-08 23:40:25,798 INFO L280 TraceCheckUtils]: 40: Hoare triple {3678#(<= main_~k~0 main_~n~0)} havoc #t~nondet4; {3678#(<= main_~k~0 main_~n~0)} is VALID [2020-07-08 23:40:25,798 INFO L263 TraceCheckUtils]: 41: Hoare triple {3678#(<= main_~k~0 main_~n~0)} call __VERIFIER_assert((if ~k~0 >= ~n~0 then 1 else 0)); {3665#true} is VALID [2020-07-08 23:40:25,799 INFO L280 TraceCheckUtils]: 42: Hoare triple {3665#true} ~cond := #in~cond; {3665#true} is VALID [2020-07-08 23:40:25,799 INFO L280 TraceCheckUtils]: 43: Hoare triple {3665#true} assume !(0 == ~cond); {3665#true} is VALID [2020-07-08 23:40:25,801 INFO L280 TraceCheckUtils]: 44: Hoare triple {3665#true} assume true; {3665#true} is VALID [2020-07-08 23:40:25,803 INFO L275 TraceCheckUtils]: 45: Hoare quadruple {3665#true} {3678#(<= main_~k~0 main_~n~0)} #112#return; {3678#(<= main_~k~0 main_~n~0)} is VALID [2020-07-08 23:40:25,804 INFO L263 TraceCheckUtils]: 46: Hoare triple {3678#(<= main_~k~0 main_~n~0)} call __VERIFIER_assert((if ~k~0 <= ~n~0 then 1 else 0)); {3683#(not (= 0 |__VERIFIER_assert_#in~cond|))} is VALID [2020-07-08 23:40:25,805 INFO L280 TraceCheckUtils]: 47: Hoare triple {3683#(not (= 0 |__VERIFIER_assert_#in~cond|))} ~cond := #in~cond; {3684#(not (= 0 __VERIFIER_assert_~cond))} is VALID [2020-07-08 23:40:25,805 INFO L280 TraceCheckUtils]: 48: Hoare triple {3684#(not (= 0 __VERIFIER_assert_~cond))} assume 0 == ~cond; {3666#false} is VALID [2020-07-08 23:40:25,805 INFO L280 TraceCheckUtils]: 49: Hoare triple {3666#false} assume !false; {3666#false} is VALID [2020-07-08 23:40:25,808 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-08 23:40:25,809 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [157199126] [2020-07-08 23:40:25,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-08 23:40:25,809 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-07-08 23:40:25,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53177629] [2020-07-08 23:40:25,812 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 50 [2020-07-08 23:40:25,813 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-08 23:40:25,813 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 10 states. [2020-07-08 23:40:25,873 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 47 edges. 47 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 23:40:25,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-08 23:40:25,874 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-08 23:40:25,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-08 23:40:25,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-07-08 23:40:25,874 INFO L87 Difference]: Start difference. First operand 93 states and 105 transitions. Second operand 10 states. [2020-07-08 23:40:27,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 23:40:27,069 INFO L93 Difference]: Finished difference Result 140 states and 165 transitions. [2020-07-08 23:40:27,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-08 23:40:27,070 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 50 [2020-07-08 23:40:27,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-08 23:40:27,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-07-08 23:40:27,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 83 transitions. [2020-07-08 23:40:27,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-07-08 23:40:27,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 83 transitions. [2020-07-08 23:40:27,075 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 16 states and 83 transitions. [2020-07-08 23:40:27,181 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 83 edges. 83 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 23:40:27,185 INFO L225 Difference]: With dead ends: 140 [2020-07-08 23:40:27,185 INFO L226 Difference]: Without dead ends: 138 [2020-07-08 23:40:27,186 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2020-07-08 23:40:27,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-07-08 23:40:27,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 76. [2020-07-08 23:40:27,363 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-08 23:40:27,364 INFO L82 GeneralOperation]: Start isEquivalent. First operand 138 states. Second operand 76 states. [2020-07-08 23:40:27,364 INFO L74 IsIncluded]: Start isIncluded. First operand 138 states. Second operand 76 states. [2020-07-08 23:40:27,364 INFO L87 Difference]: Start difference. First operand 138 states. Second operand 76 states. [2020-07-08 23:40:27,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 23:40:27,377 INFO L93 Difference]: Finished difference Result 138 states and 163 transitions. [2020-07-08 23:40:27,377 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 163 transitions. [2020-07-08 23:40:27,380 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 23:40:27,380 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 23:40:27,380 INFO L74 IsIncluded]: Start isIncluded. First operand 76 states. Second operand 138 states. [2020-07-08 23:40:27,380 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 138 states. [2020-07-08 23:40:27,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 23:40:27,391 INFO L93 Difference]: Finished difference Result 138 states and 163 transitions. [2020-07-08 23:40:27,391 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 163 transitions. [2020-07-08 23:40:27,392 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 23:40:27,392 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 23:40:27,392 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-08 23:40:27,393 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-08 23:40:27,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-07-08 23:40:27,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 82 transitions. [2020-07-08 23:40:27,400 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 82 transitions. Word has length 50 [2020-07-08 23:40:27,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-08 23:40:27,401 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 82 transitions. [2020-07-08 23:40:27,401 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-08 23:40:27,401 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 76 states and 82 transitions. [2020-07-08 23:40:27,561 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 82 edges. 82 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 23:40:27,561 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 82 transitions. [2020-07-08 23:40:27,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-07-08 23:40:27,562 INFO L414 BasicCegarLoop]: Found error trace [2020-07-08 23:40:27,562 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-08 23:40:27,562 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-08 23:40:27,562 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-08 23:40:27,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-08 23:40:27,563 INFO L82 PathProgramCache]: Analyzing trace with hash 2033926999, now seen corresponding path program 1 times [2020-07-08 23:40:27,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-08 23:40:27,563 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1335844545] [2020-07-08 23:40:27,564 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-08 23:40:27,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 23:40:27,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 23:40:27,750 INFO L280 TraceCheckUtils]: 0: Hoare triple {4417#true} assume true; {4417#true} is VALID [2020-07-08 23:40:27,751 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {4417#true} {4417#true} #106#return; {4417#true} is VALID [2020-07-08 23:40:27,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 23:40:27,763 INFO L280 TraceCheckUtils]: 0: Hoare triple {4417#true} ~cond := #in~cond; {4417#true} is VALID [2020-07-08 23:40:27,763 INFO L280 TraceCheckUtils]: 1: Hoare triple {4417#true} assume !(0 == ~cond); {4417#true} is VALID [2020-07-08 23:40:27,764 INFO L280 TraceCheckUtils]: 2: Hoare triple {4417#true} assume true; {4417#true} is VALID [2020-07-08 23:40:27,765 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {4417#true} {4421#(<= (* 2 main_~i~0) main_~j~0)} #112#return; {4421#(<= (* 2 main_~i~0) main_~j~0)} is VALID [2020-07-08 23:40:27,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 23:40:27,773 INFO L280 TraceCheckUtils]: 0: Hoare triple {4417#true} ~cond := #in~cond; {4417#true} is VALID [2020-07-08 23:40:27,773 INFO L280 TraceCheckUtils]: 1: Hoare triple {4417#true} assume !(0 == ~cond); {4417#true} is VALID [2020-07-08 23:40:27,773 INFO L280 TraceCheckUtils]: 2: Hoare triple {4417#true} assume true; {4417#true} is VALID [2020-07-08 23:40:27,775 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {4417#true} {4421#(<= (* 2 main_~i~0) main_~j~0)} #114#return; {4421#(<= (* 2 main_~i~0) main_~j~0)} is VALID [2020-07-08 23:40:27,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 23:40:27,785 INFO L280 TraceCheckUtils]: 0: Hoare triple {4417#true} ~cond := #in~cond; {4417#true} is VALID [2020-07-08 23:40:27,785 INFO L280 TraceCheckUtils]: 1: Hoare triple {4417#true} assume !(0 == ~cond); {4417#true} is VALID [2020-07-08 23:40:27,785 INFO L280 TraceCheckUtils]: 2: Hoare triple {4417#true} assume true; {4417#true} is VALID [2020-07-08 23:40:27,786 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {4417#true} {4432#(<= (+ (* 2 main_~i~0) 1) main_~k~0)} #110#return; {4432#(<= (+ (* 2 main_~i~0) 1) main_~k~0)} is VALID [2020-07-08 23:40:27,787 INFO L263 TraceCheckUtils]: 0: Hoare triple {4417#true} call ULTIMATE.init(); {4417#true} is VALID [2020-07-08 23:40:27,787 INFO L280 TraceCheckUtils]: 1: Hoare triple {4417#true} assume true; {4417#true} is VALID [2020-07-08 23:40:27,787 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {4417#true} {4417#true} #106#return; {4417#true} is VALID [2020-07-08 23:40:27,788 INFO L263 TraceCheckUtils]: 3: Hoare triple {4417#true} call #t~ret6 := main(); {4417#true} is VALID [2020-07-08 23:40:27,788 INFO L280 TraceCheckUtils]: 4: Hoare triple {4417#true} havoc ~i~0; {4417#true} is VALID [2020-07-08 23:40:27,788 INFO L280 TraceCheckUtils]: 5: Hoare triple {4417#true} havoc ~j~0; {4417#true} is VALID [2020-07-08 23:40:27,788 INFO L280 TraceCheckUtils]: 6: Hoare triple {4417#true} havoc ~k~0; {4417#true} is VALID [2020-07-08 23:40:27,789 INFO L280 TraceCheckUtils]: 7: Hoare triple {4417#true} havoc ~n~0; {4417#true} is VALID [2020-07-08 23:40:27,789 INFO L280 TraceCheckUtils]: 8: Hoare triple {4417#true} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; {4417#true} is VALID [2020-07-08 23:40:27,789 INFO L280 TraceCheckUtils]: 9: Hoare triple {4417#true} ~k~0 := #t~nondet0; {4417#true} is VALID [2020-07-08 23:40:27,790 INFO L280 TraceCheckUtils]: 10: Hoare triple {4417#true} havoc #t~nondet0; {4417#true} is VALID [2020-07-08 23:40:27,791 INFO L280 TraceCheckUtils]: 11: Hoare triple {4417#true} assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647; {4417#true} is VALID [2020-07-08 23:40:27,791 INFO L280 TraceCheckUtils]: 12: Hoare triple {4417#true} ~n~0 := #t~nondet1; {4417#true} is VALID [2020-07-08 23:40:27,791 INFO L280 TraceCheckUtils]: 13: Hoare triple {4417#true} havoc #t~nondet1; {4417#true} is VALID [2020-07-08 23:40:27,791 INFO L280 TraceCheckUtils]: 14: Hoare triple {4417#true} assume !!(~n~0 < 1000000); {4417#true} is VALID [2020-07-08 23:40:27,792 INFO L280 TraceCheckUtils]: 15: Hoare triple {4417#true} assume ~k~0 == ~n~0; {4417#true} is VALID [2020-07-08 23:40:27,792 INFO L280 TraceCheckUtils]: 16: Hoare triple {4417#true} ~i~0 := 0; {4417#true} is VALID [2020-07-08 23:40:27,792 INFO L280 TraceCheckUtils]: 17: Hoare triple {4417#true} assume !!(~i~0 < ~n~0); {4417#true} is VALID [2020-07-08 23:40:27,793 INFO L280 TraceCheckUtils]: 18: Hoare triple {4417#true} ~j~0 := 2 * ~i~0; {4421#(<= (* 2 main_~i~0) main_~j~0)} is VALID [2020-07-08 23:40:27,794 INFO L280 TraceCheckUtils]: 19: Hoare triple {4421#(<= (* 2 main_~i~0) main_~j~0)} assume !!(~j~0 < ~n~0); {4421#(<= (* 2 main_~i~0) main_~j~0)} is VALID [2020-07-08 23:40:27,794 INFO L280 TraceCheckUtils]: 20: Hoare triple {4421#(<= (* 2 main_~i~0) main_~j~0)} assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647; {4421#(<= (* 2 main_~i~0) main_~j~0)} is VALID [2020-07-08 23:40:27,795 INFO L280 TraceCheckUtils]: 21: Hoare triple {4421#(<= (* 2 main_~i~0) main_~j~0)} assume !(0 != #t~nondet4); {4421#(<= (* 2 main_~i~0) main_~j~0)} is VALID [2020-07-08 23:40:27,795 INFO L280 TraceCheckUtils]: 22: Hoare triple {4421#(<= (* 2 main_~i~0) main_~j~0)} havoc #t~nondet4; {4421#(<= (* 2 main_~i~0) main_~j~0)} is VALID [2020-07-08 23:40:27,795 INFO L263 TraceCheckUtils]: 23: Hoare triple {4421#(<= (* 2 main_~i~0) main_~j~0)} call __VERIFIER_assert((if ~k~0 >= ~n~0 then 1 else 0)); {4417#true} is VALID [2020-07-08 23:40:27,795 INFO L280 TraceCheckUtils]: 24: Hoare triple {4417#true} ~cond := #in~cond; {4417#true} is VALID [2020-07-08 23:40:27,796 INFO L280 TraceCheckUtils]: 25: Hoare triple {4417#true} assume !(0 == ~cond); {4417#true} is VALID [2020-07-08 23:40:27,796 INFO L280 TraceCheckUtils]: 26: Hoare triple {4417#true} assume true; {4417#true} is VALID [2020-07-08 23:40:27,796 INFO L275 TraceCheckUtils]: 27: Hoare quadruple {4417#true} {4421#(<= (* 2 main_~i~0) main_~j~0)} #112#return; {4421#(<= (* 2 main_~i~0) main_~j~0)} is VALID [2020-07-08 23:40:27,797 INFO L263 TraceCheckUtils]: 28: Hoare triple {4421#(<= (* 2 main_~i~0) main_~j~0)} call __VERIFIER_assert((if ~k~0 <= ~n~0 then 1 else 0)); {4417#true} is VALID [2020-07-08 23:40:27,797 INFO L280 TraceCheckUtils]: 29: Hoare triple {4417#true} ~cond := #in~cond; {4417#true} is VALID [2020-07-08 23:40:27,797 INFO L280 TraceCheckUtils]: 30: Hoare triple {4417#true} assume !(0 == ~cond); {4417#true} is VALID [2020-07-08 23:40:27,797 INFO L280 TraceCheckUtils]: 31: Hoare triple {4417#true} assume true; {4417#true} is VALID [2020-07-08 23:40:27,799 INFO L275 TraceCheckUtils]: 32: Hoare quadruple {4417#true} {4421#(<= (* 2 main_~i~0) main_~j~0)} #114#return; {4421#(<= (* 2 main_~i~0) main_~j~0)} is VALID [2020-07-08 23:40:27,801 INFO L280 TraceCheckUtils]: 33: Hoare triple {4421#(<= (* 2 main_~i~0) main_~j~0)} #t~post3 := ~j~0; {4430#(<= (* 2 main_~i~0) |main_#t~post3|)} is VALID [2020-07-08 23:40:27,803 INFO L280 TraceCheckUtils]: 34: Hoare triple {4430#(<= (* 2 main_~i~0) |main_#t~post3|)} ~j~0 := 1 + #t~post3; {4431#(<= (+ (* 2 main_~i~0) 1) main_~j~0)} is VALID [2020-07-08 23:40:27,804 INFO L280 TraceCheckUtils]: 35: Hoare triple {4431#(<= (+ (* 2 main_~i~0) 1) main_~j~0)} havoc #t~post3; {4431#(<= (+ (* 2 main_~i~0) 1) main_~j~0)} is VALID [2020-07-08 23:40:27,804 INFO L280 TraceCheckUtils]: 36: Hoare triple {4431#(<= (+ (* 2 main_~i~0) 1) main_~j~0)} assume !!(~j~0 < ~n~0); {4431#(<= (+ (* 2 main_~i~0) 1) main_~j~0)} is VALID [2020-07-08 23:40:27,804 INFO L280 TraceCheckUtils]: 37: Hoare triple {4431#(<= (+ (* 2 main_~i~0) 1) main_~j~0)} assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647; {4431#(<= (+ (* 2 main_~i~0) 1) main_~j~0)} is VALID [2020-07-08 23:40:27,805 INFO L280 TraceCheckUtils]: 38: Hoare triple {4431#(<= (+ (* 2 main_~i~0) 1) main_~j~0)} assume 0 != #t~nondet4; {4431#(<= (+ (* 2 main_~i~0) 1) main_~j~0)} is VALID [2020-07-08 23:40:27,805 INFO L280 TraceCheckUtils]: 39: Hoare triple {4431#(<= (+ (* 2 main_~i~0) 1) main_~j~0)} havoc #t~nondet4; {4431#(<= (+ (* 2 main_~i~0) 1) main_~j~0)} is VALID [2020-07-08 23:40:27,806 INFO L280 TraceCheckUtils]: 40: Hoare triple {4431#(<= (+ (* 2 main_~i~0) 1) main_~j~0)} ~k~0 := ~j~0; {4432#(<= (+ (* 2 main_~i~0) 1) main_~k~0)} is VALID [2020-07-08 23:40:27,806 INFO L280 TraceCheckUtils]: 41: Hoare triple {4432#(<= (+ (* 2 main_~i~0) 1) main_~k~0)} assume !!(~k~0 < ~n~0); {4432#(<= (+ (* 2 main_~i~0) 1) main_~k~0)} is VALID [2020-07-08 23:40:27,806 INFO L263 TraceCheckUtils]: 42: Hoare triple {4432#(<= (+ (* 2 main_~i~0) 1) main_~k~0)} call __VERIFIER_assert((if ~k~0 >= 2 * ~i~0 then 1 else 0)); {4417#true} is VALID [2020-07-08 23:40:27,806 INFO L280 TraceCheckUtils]: 43: Hoare triple {4417#true} ~cond := #in~cond; {4417#true} is VALID [2020-07-08 23:40:27,807 INFO L280 TraceCheckUtils]: 44: Hoare triple {4417#true} assume !(0 == ~cond); {4417#true} is VALID [2020-07-08 23:40:27,807 INFO L280 TraceCheckUtils]: 45: Hoare triple {4417#true} assume true; {4417#true} is VALID [2020-07-08 23:40:27,807 INFO L275 TraceCheckUtils]: 46: Hoare quadruple {4417#true} {4432#(<= (+ (* 2 main_~i~0) 1) main_~k~0)} #110#return; {4432#(<= (+ (* 2 main_~i~0) 1) main_~k~0)} is VALID [2020-07-08 23:40:27,808 INFO L280 TraceCheckUtils]: 47: Hoare triple {4432#(<= (+ (* 2 main_~i~0) 1) main_~k~0)} #t~post5 := ~k~0; {4437#(<= (+ (* 2 main_~i~0) 1) |main_#t~post5|)} is VALID [2020-07-08 23:40:27,809 INFO L280 TraceCheckUtils]: 48: Hoare triple {4437#(<= (+ (* 2 main_~i~0) 1) |main_#t~post5|)} ~k~0 := 1 + #t~post5; {4438#(<= (+ (* 2 main_~i~0) 2) main_~k~0)} is VALID [2020-07-08 23:40:27,810 INFO L280 TraceCheckUtils]: 49: Hoare triple {4438#(<= (+ (* 2 main_~i~0) 2) main_~k~0)} havoc #t~post5; {4438#(<= (+ (* 2 main_~i~0) 2) main_~k~0)} is VALID [2020-07-08 23:40:27,811 INFO L280 TraceCheckUtils]: 50: Hoare triple {4438#(<= (+ (* 2 main_~i~0) 2) main_~k~0)} assume !!(~k~0 < ~n~0); {4438#(<= (+ (* 2 main_~i~0) 2) main_~k~0)} is VALID [2020-07-08 23:40:27,812 INFO L263 TraceCheckUtils]: 51: Hoare triple {4438#(<= (+ (* 2 main_~i~0) 2) main_~k~0)} call __VERIFIER_assert((if ~k~0 >= 2 * ~i~0 then 1 else 0)); {4439#(not (= 0 |__VERIFIER_assert_#in~cond|))} is VALID [2020-07-08 23:40:27,813 INFO L280 TraceCheckUtils]: 52: Hoare triple {4439#(not (= 0 |__VERIFIER_assert_#in~cond|))} ~cond := #in~cond; {4440#(not (= 0 __VERIFIER_assert_~cond))} is VALID [2020-07-08 23:40:27,813 INFO L280 TraceCheckUtils]: 53: Hoare triple {4440#(not (= 0 __VERIFIER_assert_~cond))} assume 0 == ~cond; {4418#false} is VALID [2020-07-08 23:40:27,814 INFO L280 TraceCheckUtils]: 54: Hoare triple {4418#false} assume !false; {4418#false} is VALID [2020-07-08 23:40:27,821 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-07-08 23:40:27,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1335844545] [2020-07-08 23:40:27,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-08 23:40:27,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-08 23:40:27,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612610248] [2020-07-08 23:40:27,822 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 55 [2020-07-08 23:40:27,823 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-08 23:40:27,823 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 10 states. [2020-07-08 23:40:27,871 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 49 edges. 49 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 23:40:27,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-08 23:40:27,872 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-08 23:40:27,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-08 23:40:27,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-07-08 23:40:27,872 INFO L87 Difference]: Start difference. First operand 76 states and 82 transitions. Second operand 10 states. [2020-07-08 23:40:29,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 23:40:29,142 INFO L93 Difference]: Finished difference Result 98 states and 110 transitions. [2020-07-08 23:40:29,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-08 23:40:29,142 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 55 [2020-07-08 23:40:29,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-08 23:40:29,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-07-08 23:40:29,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 97 transitions. [2020-07-08 23:40:29,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-07-08 23:40:29,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 97 transitions. [2020-07-08 23:40:29,151 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 14 states and 97 transitions. [2020-07-08 23:40:29,260 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 97 edges. 97 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 23:40:29,260 INFO L225 Difference]: With dead ends: 98 [2020-07-08 23:40:29,260 INFO L226 Difference]: Without dead ends: 0 [2020-07-08 23:40:29,262 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2020-07-08 23:40:29,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-08 23:40:29,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-08 23:40:29,264 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-08 23:40:29,264 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand 0 states. [2020-07-08 23:40:29,264 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-08 23:40:29,264 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-08 23:40:29,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 23:40:29,265 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-08 23:40:29,265 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-08 23:40:29,265 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 23:40:29,265 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 23:40:29,267 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-08 23:40:29,267 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-08 23:40:29,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 23:40:29,267 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-08 23:40:29,268 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-08 23:40:29,268 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 23:40:29,268 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 23:40:29,268 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-08 23:40:29,268 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-08 23:40:29,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-08 23:40:29,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-08 23:40:29,269 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 55 [2020-07-08 23:40:29,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-08 23:40:29,269 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-08 23:40:29,269 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-08 23:40:29,269 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 0 states and 0 transitions. [2020-07-08 23:40:29,269 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 23:40:29,269 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-08 23:40:29,270 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 23:40:29,270 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-08 23:40:29,273 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-08 23:40:30,847 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-08 23:40:30,847 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-07-08 23:40:30,848 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-07-08 23:40:30,848 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-08 23:40:30,848 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-08 23:40:30,848 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-07-08 23:40:30,848 INFO L268 CegarLoopResult]: For program point L4-3(lines 3 5) no Hoare annotation was computed. [2020-07-08 23:40:30,848 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-07-08 23:40:30,848 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-07-08 23:40:30,848 INFO L268 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-07-08 23:40:30,848 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-07-08 23:40:30,849 INFO L264 CegarLoopResult]: At program point L31(lines 23 33) the Hoare annotation is: (and (<= (+ main_~j~0 1) main_~n~0) (<= main_~k~0 main_~n~0) (<= (* 2 main_~i~0) main_~j~0) (<= main_~n~0 main_~k~0)) [2020-07-08 23:40:30,849 INFO L271 CegarLoopResult]: At program point mainEXIT(lines 13 37) the Hoare annotation is: true [2020-07-08 23:40:30,849 INFO L264 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: (and (<= main_~k~0 main_~n~0) (<= main_~n~0 main_~k~0)) [2020-07-08 23:40:30,849 INFO L264 CegarLoopResult]: At program point L23-3(line 23) the Hoare annotation is: (let ((.cse0 (* 2 main_~i~0))) (and (<= (+ main_~j~0 1) main_~n~0) (<= main_~k~0 main_~n~0) (<= .cse0 |main_#t~post3|) (<= .cse0 main_~j~0) (<= main_~n~0 main_~k~0))) [2020-07-08 23:40:30,849 INFO L264 CegarLoopResult]: At program point L23-4(line 23) the Hoare annotation is: (let ((.cse0 (* 2 main_~i~0))) (and (<= (+ .cse0 1) main_~j~0) (<= main_~k~0 main_~n~0) (<= .cse0 |main_#t~post3|) (<= main_~n~0 main_~k~0))) [2020-07-08 23:40:30,850 INFO L264 CegarLoopResult]: At program point L23-5(lines 23 33) the Hoare annotation is: (and (<= main_~k~0 main_~n~0) (<= main_~n~0 main_~k~0) (<= (* 2 main_~i~0) main_~j~0)) [2020-07-08 23:40:30,850 INFO L271 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: true [2020-07-08 23:40:30,850 INFO L271 CegarLoopResult]: At program point L15-1(line 15) the Hoare annotation is: true [2020-07-08 23:40:30,850 INFO L271 CegarLoopResult]: At program point L15-2(line 15) the Hoare annotation is: true [2020-07-08 23:40:30,850 INFO L264 CegarLoopResult]: At program point L24(line 24) the Hoare annotation is: (and (<= (+ main_~j~0 1) main_~n~0) (<= main_~k~0 main_~n~0) (<= main_~n~0 main_~k~0) (<= (* 2 main_~i~0) main_~j~0)) [2020-07-08 23:40:30,850 INFO L264 CegarLoopResult]: At program point L24-1(lines 24 32) the Hoare annotation is: (and (<= (+ main_~j~0 1) main_~n~0) (<= main_~k~0 main_~n~0) (<= main_~n~0 main_~k~0) (<= (* 2 main_~i~0) main_~j~0)) [2020-07-08 23:40:30,850 INFO L264 CegarLoopResult]: At program point L24-2(line 24) the Hoare annotation is: (and (<= (+ main_~j~0 1) main_~n~0) (<= main_~k~0 main_~n~0) (<= main_~n~0 main_~k~0) (<= (* 2 main_~i~0) main_~j~0)) [2020-07-08 23:40:30,851 INFO L264 CegarLoopResult]: At program point L24-3(line 24) the Hoare annotation is: (and (<= (+ main_~j~0 1) main_~n~0) (<= main_~k~0 main_~n~0) (<= main_~n~0 main_~k~0) (<= (* 2 main_~i~0) main_~j~0)) [2020-07-08 23:40:30,851 INFO L271 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: true [2020-07-08 23:40:30,851 INFO L271 CegarLoopResult]: At program point L16-1(line 16) the Hoare annotation is: true [2020-07-08 23:40:30,851 INFO L271 CegarLoopResult]: At program point L16-2(line 16) the Hoare annotation is: true [2020-07-08 23:40:30,851 INFO L264 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: (and (<= (+ main_~j~0 1) main_~n~0) (<= main_~k~0 main_~n~0) (<= main_~n~0 main_~k~0) (<= (* 2 main_~i~0) main_~j~0)) [2020-07-08 23:40:30,851 INFO L264 CegarLoopResult]: At program point L25-3(line 25) the Hoare annotation is: (let ((.cse0 (* 2 main_~i~0))) (and (<= (+ main_~j~0 1) main_~n~0) (<= (+ main_~k~0 1) main_~n~0) (<= .cse0 main_~k~0) (<= (+ |main_#t~post5| 1) main_~n~0) (<= .cse0 |main_#t~post5|) (<= .cse0 main_~j~0))) [2020-07-08 23:40:30,852 INFO L264 CegarLoopResult]: At program point L25-4(line 25) the Hoare annotation is: (let ((.cse0 (* 2 main_~i~0))) (and (<= (+ .cse0 1) main_~k~0) (<= (+ main_~j~0 1) main_~n~0) (<= (+ |main_#t~post5| 1) main_~n~0) (<= main_~k~0 main_~n~0) (<= .cse0 |main_#t~post5|) (<= .cse0 main_~j~0))) [2020-07-08 23:40:30,852 INFO L264 CegarLoopResult]: At program point L25-5(lines 25 27) the Hoare annotation is: (let ((.cse0 (* 2 main_~i~0))) (and (<= (+ main_~j~0 1) main_~n~0) (<= .cse0 main_~k~0) (<= main_~k~0 main_~n~0) (<= .cse0 main_~j~0))) [2020-07-08 23:40:30,852 INFO L271 CegarLoopResult]: At program point L17(line 17) the Hoare annotation is: true [2020-07-08 23:40:30,852 INFO L271 CegarLoopResult]: At program point L17-1(line 17) the Hoare annotation is: true [2020-07-08 23:40:30,852 INFO L271 CegarLoopResult]: At program point mainFINAL(lines 13 37) the Hoare annotation is: true [2020-07-08 23:40:30,852 INFO L264 CegarLoopResult]: At program point L30(line 30) the Hoare annotation is: (and (<= (+ main_~j~0 1) main_~n~0) (<= main_~k~0 main_~n~0) (<= main_~n~0 main_~k~0) (<= (* 2 main_~i~0) main_~j~0)) [2020-07-08 23:40:30,852 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 37) the Hoare annotation is: true [2020-07-08 23:40:30,853 INFO L264 CegarLoopResult]: At program point L30-1(line 30) the Hoare annotation is: (and (<= (+ main_~j~0 1) main_~n~0) (<= main_~k~0 main_~n~0) (<= main_~n~0 main_~k~0) (<= (* 2 main_~i~0) main_~j~0)) [2020-07-08 23:40:30,853 INFO L264 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: (let ((.cse0 (* 2 main_~i~0))) (and (<= (+ main_~j~0 1) main_~n~0) (<= (+ main_~k~0 1) main_~n~0) (<= .cse0 main_~k~0) (<= .cse0 main_~j~0))) [2020-07-08 23:40:30,853 INFO L264 CegarLoopResult]: At program point L26-1(lines 25 27) the Hoare annotation is: (let ((.cse0 (* 2 main_~i~0))) (and (<= (+ main_~j~0 1) main_~n~0) (<= (+ main_~k~0 1) main_~n~0) (<= .cse0 main_~k~0) (<= .cse0 main_~j~0))) [2020-07-08 23:40:30,853 INFO L264 CegarLoopResult]: At program point L22-2(lines 22 34) the Hoare annotation is: (and (<= main_~k~0 main_~n~0) (<= main_~n~0 main_~k~0) (<= (* 2 main_~i~0) main_~j~0)) [2020-07-08 23:40:30,853 INFO L264 CegarLoopResult]: At program point L22-3(line 22) the Hoare annotation is: (and (<= main_~k~0 main_~n~0) (<= main_~n~0 main_~k~0) (<= (* 2 main_~i~0) main_~j~0)) [2020-07-08 23:40:30,853 INFO L271 CegarLoopResult]: At program point L18(lines 18 21) the Hoare annotation is: true [2020-07-08 23:40:30,854 INFO L264 CegarLoopResult]: At program point L22-4(line 22) the Hoare annotation is: (and (<= main_~k~0 main_~n~0) (<= main_~n~0 main_~k~0)) [2020-07-08 23:40:30,854 INFO L264 CegarLoopResult]: At program point L18-1(lines 18 21) the Hoare annotation is: (and (<= main_~k~0 main_~n~0) (<= main_~n~0 main_~k~0)) [2020-07-08 23:40:30,854 INFO L264 CegarLoopResult]: At program point L22-5(lines 22 34) the Hoare annotation is: (and (<= main_~k~0 main_~n~0) (<= main_~n~0 main_~k~0)) [2020-07-08 23:40:30,854 INFO L271 CegarLoopResult]: At program point L14(line 14) the Hoare annotation is: true [2020-07-08 23:40:30,854 INFO L271 CegarLoopResult]: At program point L14-1(line 14) the Hoare annotation is: true [2020-07-08 23:40:30,854 INFO L271 CegarLoopResult]: At program point L14-2(line 14) the Hoare annotation is: true [2020-07-08 23:40:30,854 INFO L271 CegarLoopResult]: At program point L35(lines 13 37) the Hoare annotation is: true [2020-07-08 23:40:30,855 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-07-08 23:40:30,855 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))) [2020-07-08 23:40:30,855 INFO L264 CegarLoopResult]: At program point L8(line 8) the Hoare annotation is: (= 0 |__VERIFIER_assert_#in~cond|) [2020-07-08 23:40:30,855 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))) [2020-07-08 23:40:30,855 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))) [2020-07-08 23:40:30,855 INFO L264 CegarLoopResult]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) the Hoare annotation is: (= 0 |__VERIFIER_assert_#in~cond|) [2020-07-08 23:40:30,860 WARN L170 areAnnotationChecker]: assume_abort_if_notENTRY has no Hoare annotation [2020-07-08 23:40:30,862 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2020-07-08 23:40:30,862 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2020-07-08 23:40:30,863 WARN L170 areAnnotationChecker]: L4-1 has no Hoare annotation [2020-07-08 23:40:30,863 WARN L170 areAnnotationChecker]: L4-3 has no Hoare annotation [2020-07-08 23:40:30,885 INFO L163 areAnnotationChecker]: CFG has 61 edges. 61 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-08 23:40:30,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.07 11:40:30 BoogieIcfgContainer [2020-07-08 23:40:30,900 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-08 23:40:30,903 INFO L168 Benchmark]: Toolchain (without parser) took 14311.13 ms. Allocated memory was 143.7 MB in the beginning and 349.7 MB in the end (delta: 206.0 MB). Free memory was 102.0 MB in the beginning and 139.3 MB in the end (delta: -37.4 MB). Peak memory consumption was 168.7 MB. Max. memory is 7.1 GB. [2020-07-08 23:40:30,904 INFO L168 Benchmark]: CDTParser took 0.69 ms. Allocated memory is still 143.7 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-08 23:40:30,905 INFO L168 Benchmark]: CACSL2BoogieTranslator took 251.93 ms. Allocated memory is still 143.7 MB. Free memory was 101.7 MB in the beginning and 91.7 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-07-08 23:40:30,906 INFO L168 Benchmark]: Boogie Preprocessor took 128.74 ms. Allocated memory was 143.7 MB in the beginning and 201.3 MB in the end (delta: 57.7 MB). Free memory was 91.7 MB in the beginning and 180.4 MB in the end (delta: -88.7 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. [2020-07-08 23:40:30,906 INFO L168 Benchmark]: RCFGBuilder took 495.13 ms. Allocated memory is still 201.3 MB. Free memory was 180.4 MB in the beginning and 155.6 MB in the end (delta: 24.8 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. [2020-07-08 23:40:30,913 INFO L168 Benchmark]: TraceAbstraction took 13424.99 ms. Allocated memory was 201.3 MB in the beginning and 349.7 MB in the end (delta: 148.4 MB). Free memory was 154.9 MB in the beginning and 139.3 MB in the end (delta: 15.6 MB). Peak memory consumption was 164.0 MB. Max. memory is 7.1 GB. [2020-07-08 23:40:30,918 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 0.69 ms. Allocated memory is still 143.7 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 251.93 ms. Allocated memory is still 143.7 MB. Free memory was 101.7 MB in the beginning and 91.7 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 128.74 ms. Allocated memory was 143.7 MB in the beginning and 201.3 MB in the end (delta: 57.7 MB). Free memory was 91.7 MB in the beginning and 180.4 MB in the end (delta: -88.7 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 495.13 ms. Allocated memory is still 201.3 MB. Free memory was 180.4 MB in the beginning and 155.6 MB in the end (delta: 24.8 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 13424.99 ms. Allocated memory was 201.3 MB in the beginning and 349.7 MB in the end (delta: 148.4 MB). Free memory was 154.9 MB in the beginning and 139.3 MB in the end (delta: 15.6 MB). Peak memory consumption was 164.0 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: 22]: Loop Invariant Derived loop invariant: k <= n && n <= k - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: (k <= n && n <= k) && 2 * i <= j - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: ((j + 1 <= n && 2 * i <= k) && k <= n) && 2 * i <= j - 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, 55 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 11.6s, OverallIterations: 8, TraceHistogramMax: 4, AutomataDifference: 7.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 437 SDtfs, 342 SDslu, 1605 SDs, 0 SdLazy, 854 SolverSat, 93 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 128 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=93occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 203 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 50 LocationsWithAnnotation, 152 PreInvPairs, 237 NumberOfFragments, 417 HoareAnnotationTreeSize, 152 FomulaSimplifications, 48886 FormulaSimplificationTreeSizeReduction, 0.5s HoareSimplificationTime, 50 FomulaSimplificationsInter, 2689 FormulaSimplificationTreeSizeReductionInter, 0.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 315 NumberOfCodeBlocks, 315 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 307 ConstructedInterpolants, 0 QuantifiedInterpolants, 31835 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 7 PerfectInterpolantSequences, 54/58 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...