/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.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/recursive-simple/sum_10x0-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 17:22:24,262 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 17:22:24,266 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 17:22:24,287 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 17:22:24,287 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 17:22:24,290 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 17:22:24,292 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 17:22:24,303 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 17:22:24,307 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 17:22:24,310 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 17:22:24,312 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 17:22:24,314 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 17:22:24,314 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 17:22:24,317 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 17:22:24,320 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 17:22:24,321 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 17:22:24,323 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 17:22:24,324 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 17:22:24,326 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 17:22:24,331 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 17:22:24,336 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 17:22:24,340 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 17:22:24,341 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 17:22:24,341 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 17:22:24,344 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-17 17:22:24,344 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-17 17:22:24,344 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-17 17:22:24,347 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-17 17:22:24,347 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-17 17:22:24,348 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-17 17:22:24,348 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-17 17:22:24,349 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-17 17:22:24,350 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-17 17:22:24,351 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-17 17:22:24,352 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-17 17:22:24,352 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-17 17:22:24,353 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-17 17:22:24,353 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-17 17:22:24,354 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 17:22:24,354 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 17:22:24,356 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 17:22:24,357 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-17 17:22:24,387 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 17:22:24,388 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 17:22:24,392 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 17:22:24,393 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 17:22:24,393 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 17:22:24,393 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 17:22:24,393 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 17:22:24,393 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 17:22:24,393 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 17:22:24,394 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 17:22:24,394 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 17:22:24,394 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 17:22:24,396 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 17:22:24,396 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 17:22:24,397 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 17:22:24,397 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-17 17:22:24,397 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 17:22:24,397 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 17:22:24,397 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 17:22:24,398 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 17:22:24,398 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-17 17:22:24,398 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 17:22:24,398 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 [2020-07-17 17:22:24,733 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 17:22:24,756 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 17:22:24,760 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 17:22:24,761 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 17:22:24,762 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 17:22:24,762 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/sum_10x0-1.c [2020-07-17 17:22:24,847 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e539cff57/ca55a6d0fa35496f9c38b46d825b2b66/FLAG7a1ec431c [2020-07-17 17:22:25,306 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 17:22:25,307 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/sum_10x0-1.c [2020-07-17 17:22:25,312 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e539cff57/ca55a6d0fa35496f9c38b46d825b2b66/FLAG7a1ec431c [2020-07-17 17:22:25,692 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e539cff57/ca55a6d0fa35496f9c38b46d825b2b66 [2020-07-17 17:22:25,702 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 17:22:25,705 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 17:22:25,706 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 17:22:25,707 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 17:22:25,712 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 17:22:25,713 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 05:22:25" (1/1) ... [2020-07-17 17:22:25,716 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7822e28f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:22:25, skipping insertion in model container [2020-07-17 17:22:25,716 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 05:22:25" (1/1) ... [2020-07-17 17:22:25,726 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 17:22:25,745 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 17:22:25,929 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 17:22:25,934 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 17:22:25,954 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 17:22:25,975 INFO L208 MainTranslator]: Completed translation [2020-07-17 17:22:25,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:22:25 WrapperNode [2020-07-17 17:22:25,976 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 17:22:25,977 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 17:22:25,977 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 17:22:25,977 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 17:22:25,996 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:22:25" (1/1) ... [2020-07-17 17:22:25,997 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:22:25" (1/1) ... [2020-07-17 17:22:26,004 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:22:25" (1/1) ... [2020-07-17 17:22:26,004 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:22:25" (1/1) ... [2020-07-17 17:22:26,009 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:22:25" (1/1) ... [2020-07-17 17:22:26,011 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:22:25" (1/1) ... [2020-07-17 17:22:26,012 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:22:25" (1/1) ... [2020-07-17 17:22:26,014 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 17:22:26,015 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 17:22:26,015 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 17:22:26,016 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 17:22:26,017 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:22:25" (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 [2020-07-17 17:22:26,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 17:22:26,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 17:22:26,237 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2020-07-17 17:22:26,237 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 17:22:26,237 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 17:22:26,238 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2020-07-17 17:22:26,238 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 17:22:26,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 17:22:26,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 17:22:26,510 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 17:22:26,511 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-17 17:22:26,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 05:22:26 BoogieIcfgContainer [2020-07-17 17:22:26,515 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 17:22:26,517 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 17:22:26,517 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 17:22:26,523 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 17:22:26,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 05:22:25" (1/3) ... [2020-07-17 17:22:26,525 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@783613dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 05:22:26, skipping insertion in model container [2020-07-17 17:22:26,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:22:25" (2/3) ... [2020-07-17 17:22:26,525 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@783613dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 05:22:26, skipping insertion in model container [2020-07-17 17:22:26,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 05:22:26" (3/3) ... [2020-07-17 17:22:26,528 INFO L109 eAbstractionObserver]: Analyzing ICFG sum_10x0-1.c [2020-07-17 17:22:26,542 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-17 17:22:26,554 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 17:22:26,570 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 17:22:26,599 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 17:22:26,600 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 17:22:26,600 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-07-17 17:22:26,600 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 17:22:26,600 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 17:22:26,601 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 17:22:26,602 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 17:22:26,602 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 17:22:26,622 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-07-17 17:22:26,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-17 17:22:26,636 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:22:26,638 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:22:26,638 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:22:26,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:22:26,646 INFO L82 PathProgramCache]: Analyzing trace with hash 989240825, now seen corresponding path program 1 times [2020-07-17 17:22:26,657 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:22:26,658 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [746260721] [2020-07-17 17:22:26,659 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:22:26,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:22:26,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:22:26,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:22:26,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 17:22:26,892 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [746260721] [2020-07-17 17:22:26,895 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 17:22:26,896 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-17 17:22:26,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866687861] [2020-07-17 17:22:26,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-17 17:22:26,905 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:22:26,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-17 17:22:26,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-17 17:22:26,933 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 5 states. [2020-07-17 17:22:27,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:22:27,058 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2020-07-17 17:22:27,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-17 17:22:27,061 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-07-17 17:22:27,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:22:27,077 INFO L225 Difference]: With dead ends: 39 [2020-07-17 17:22:27,077 INFO L226 Difference]: Without dead ends: 25 [2020-07-17 17:22:27,083 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-17 17:22:27,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-07-17 17:22:27,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-07-17 17:22:27,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-07-17 17:22:27,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2020-07-17 17:22:27,150 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 18 [2020-07-17 17:22:27,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:22:27,151 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2020-07-17 17:22:27,151 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-17 17:22:27,151 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2020-07-17 17:22:27,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-17 17:22:27,154 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:22:27,154 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] [2020-07-17 17:22:27,155 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 17:22:27,155 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:22:27,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:22:27,156 INFO L82 PathProgramCache]: Analyzing trace with hash 1852726759, now seen corresponding path program 1 times [2020-07-17 17:22:27,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:22:27,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [756926358] [2020-07-17 17:22:27,157 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:22:27,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:22:27,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:22:27,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:22:27,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:22:27,317 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-17 17:22:27,318 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [756926358] [2020-07-17 17:22:27,318 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:22:27,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-07-17 17:22:27,319 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770393729] [2020-07-17 17:22:27,321 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-17 17:22:27,322 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:22:27,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-17 17:22:27,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-17 17:22:27,323 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 6 states. [2020-07-17 17:22:27,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:22:27,411 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2020-07-17 17:22:27,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-17 17:22:27,412 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-07-17 17:22:27,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:22:27,414 INFO L225 Difference]: With dead ends: 36 [2020-07-17 17:22:27,414 INFO L226 Difference]: Without dead ends: 30 [2020-07-17 17:22:27,416 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-07-17 17:22:27,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-07-17 17:22:27,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-07-17 17:22:27,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-07-17 17:22:27,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2020-07-17 17:22:27,430 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 27 [2020-07-17 17:22:27,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:22:27,431 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2020-07-17 17:22:27,431 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-17 17:22:27,431 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2020-07-17 17:22:27,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-07-17 17:22:27,433 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:22:27,433 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:22:27,434 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 17:22:27,434 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:22:27,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:22:27,435 INFO L82 PathProgramCache]: Analyzing trace with hash -175020829, now seen corresponding path program 2 times [2020-07-17 17:22:27,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:22:27,436 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [408505220] [2020-07-17 17:22:27,436 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:22:27,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:22:27,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:22:27,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:22:27,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:22:27,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:22:27,673 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-07-17 17:22:27,674 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [408505220] [2020-07-17 17:22:27,675 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:22:27,675 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-07-17 17:22:27,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569329665] [2020-07-17 17:22:27,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-17 17:22:27,677 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:22:27,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-17 17:22:27,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-07-17 17:22:27,678 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 7 states. [2020-07-17 17:22:27,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:22:27,796 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2020-07-17 17:22:27,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-17 17:22:27,797 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-07-17 17:22:27,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:22:27,801 INFO L225 Difference]: With dead ends: 41 [2020-07-17 17:22:27,803 INFO L226 Difference]: Without dead ends: 35 [2020-07-17 17:22:27,804 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-07-17 17:22:27,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-07-17 17:22:27,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-07-17 17:22:27,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-07-17 17:22:27,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2020-07-17 17:22:27,836 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 36 [2020-07-17 17:22:27,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:22:27,842 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2020-07-17 17:22:27,842 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-17 17:22:27,842 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2020-07-17 17:22:27,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-07-17 17:22:27,844 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:22:27,845 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:22:27,845 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-17 17:22:27,845 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:22:27,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:22:27,846 INFO L82 PathProgramCache]: Analyzing trace with hash -1021564803, now seen corresponding path program 3 times [2020-07-17 17:22:27,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:22:27,849 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [370106615] [2020-07-17 17:22:27,849 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:22:27,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:22:27,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:22:27,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:22:27,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:22:28,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:22:28,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:22:28,123 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-07-17 17:22:28,124 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [370106615] [2020-07-17 17:22:28,124 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:22:28,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-07-17 17:22:28,125 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469192810] [2020-07-17 17:22:28,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-17 17:22:28,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:22:28,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-17 17:22:28,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-07-17 17:22:28,126 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 8 states. [2020-07-17 17:22:28,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:22:28,233 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions. [2020-07-17 17:22:28,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-17 17:22:28,234 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 45 [2020-07-17 17:22:28,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:22:28,236 INFO L225 Difference]: With dead ends: 46 [2020-07-17 17:22:28,236 INFO L226 Difference]: Without dead ends: 40 [2020-07-17 17:22:28,237 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-07-17 17:22:28,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-07-17 17:22:28,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-07-17 17:22:28,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-07-17 17:22:28,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2020-07-17 17:22:28,250 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 45 [2020-07-17 17:22:28,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:22:28,251 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2020-07-17 17:22:28,251 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-17 17:22:28,251 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2020-07-17 17:22:28,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-07-17 17:22:28,253 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:22:28,254 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:22:28,254 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-17 17:22:28,254 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:22:28,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:22:28,255 INFO L82 PathProgramCache]: Analyzing trace with hash -263249715, now seen corresponding path program 4 times [2020-07-17 17:22:28,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:22:28,256 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1298833936] [2020-07-17 17:22:28,256 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:22:28,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:22:28,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:22:28,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:22:28,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:22:28,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:22:28,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:22:28,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:22:28,537 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-07-17 17:22:28,538 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1298833936] [2020-07-17 17:22:28,539 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:22:28,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-07-17 17:22:28,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423552205] [2020-07-17 17:22:28,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-17 17:22:28,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:22:28,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-17 17:22:28,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-07-17 17:22:28,542 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand 9 states. [2020-07-17 17:22:28,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:22:28,664 INFO L93 Difference]: Finished difference Result 51 states and 52 transitions. [2020-07-17 17:22:28,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-17 17:22:28,668 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 54 [2020-07-17 17:22:28,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:22:28,670 INFO L225 Difference]: With dead ends: 51 [2020-07-17 17:22:28,670 INFO L226 Difference]: Without dead ends: 45 [2020-07-17 17:22:28,672 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2020-07-17 17:22:28,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-07-17 17:22:28,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-07-17 17:22:28,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-07-17 17:22:28,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2020-07-17 17:22:28,685 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 54 [2020-07-17 17:22:28,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:22:28,686 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2020-07-17 17:22:28,686 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-17 17:22:28,686 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2020-07-17 17:22:28,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-07-17 17:22:28,688 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:22:28,689 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:22:28,693 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-17 17:22:28,693 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:22:28,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:22:28,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1884999187, now seen corresponding path program 5 times [2020-07-17 17:22:28,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:22:28,695 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1671469031] [2020-07-17 17:22:28,695 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:22:28,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:22:28,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:22:28,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:22:28,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:22:28,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:22:28,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:22:29,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:22:29,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:22:29,104 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-07-17 17:22:29,107 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1671469031] [2020-07-17 17:22:29,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:22:29,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-07-17 17:22:29,110 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472048307] [2020-07-17 17:22:29,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-17 17:22:29,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:22:29,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-17 17:22:29,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-07-17 17:22:29,114 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand 10 states. [2020-07-17 17:22:29,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:22:29,297 INFO L93 Difference]: Finished difference Result 56 states and 57 transitions. [2020-07-17 17:22:29,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-17 17:22:29,301 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 63 [2020-07-17 17:22:29,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:22:29,303 INFO L225 Difference]: With dead ends: 56 [2020-07-17 17:22:29,303 INFO L226 Difference]: Without dead ends: 50 [2020-07-17 17:22:29,307 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2020-07-17 17:22:29,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-07-17 17:22:29,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-07-17 17:22:29,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-07-17 17:22:29,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2020-07-17 17:22:29,337 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 63 [2020-07-17 17:22:29,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:22:29,340 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2020-07-17 17:22:29,340 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-17 17:22:29,341 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2020-07-17 17:22:29,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-07-17 17:22:29,345 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:22:29,346 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:22:29,351 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-17 17:22:29,352 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:22:29,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:22:29,353 INFO L82 PathProgramCache]: Analyzing trace with hash -441437769, now seen corresponding path program 6 times [2020-07-17 17:22:29,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:22:29,354 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1968384040] [2020-07-17 17:22:29,354 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:22:29,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:22:29,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:22:29,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:22:29,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:22:29,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:22:29,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:22:29,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:22:29,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:22:29,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:22:29,708 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-07-17 17:22:29,708 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1968384040] [2020-07-17 17:22:29,709 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:22:29,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-07-17 17:22:29,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474998361] [2020-07-17 17:22:29,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-17 17:22:29,713 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:22:29,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-17 17:22:29,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-07-17 17:22:29,714 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand 11 states. [2020-07-17 17:22:29,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:22:29,846 INFO L93 Difference]: Finished difference Result 61 states and 62 transitions. [2020-07-17 17:22:29,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-17 17:22:29,846 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 72 [2020-07-17 17:22:29,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:22:29,848 INFO L225 Difference]: With dead ends: 61 [2020-07-17 17:22:29,849 INFO L226 Difference]: Without dead ends: 55 [2020-07-17 17:22:29,850 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=110, Invalid=196, Unknown=0, NotChecked=0, Total=306 [2020-07-17 17:22:29,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-07-17 17:22:29,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-07-17 17:22:29,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-07-17 17:22:29,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2020-07-17 17:22:29,861 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 72 [2020-07-17 17:22:29,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:22:29,861 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions. [2020-07-17 17:22:29,861 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-17 17:22:29,861 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions. [2020-07-17 17:22:29,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-07-17 17:22:29,863 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:22:29,863 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:22:29,863 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-17 17:22:29,864 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:22:29,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:22:29,864 INFO L82 PathProgramCache]: Analyzing trace with hash 999943849, now seen corresponding path program 7 times [2020-07-17 17:22:29,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:22:29,865 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1308271694] [2020-07-17 17:22:29,865 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:22:29,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:22:29,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:22:29,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:22:29,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:22:29,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:22:30,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:22:30,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:22:30,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:22:30,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:22:30,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:22:30,176 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-07-17 17:22:30,177 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1308271694] [2020-07-17 17:22:30,177 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:22:30,178 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-07-17 17:22:30,178 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531108186] [2020-07-17 17:22:30,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-17 17:22:30,179 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:22:30,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-17 17:22:30,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2020-07-17 17:22:30,180 INFO L87 Difference]: Start difference. First operand 55 states and 56 transitions. Second operand 12 states. [2020-07-17 17:22:30,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:22:30,309 INFO L93 Difference]: Finished difference Result 66 states and 67 transitions. [2020-07-17 17:22:30,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-17 17:22:30,309 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 81 [2020-07-17 17:22:30,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:22:30,311 INFO L225 Difference]: With dead ends: 66 [2020-07-17 17:22:30,311 INFO L226 Difference]: Without dead ends: 60 [2020-07-17 17:22:30,313 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=137, Invalid=243, Unknown=0, NotChecked=0, Total=380 [2020-07-17 17:22:30,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-07-17 17:22:30,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-07-17 17:22:30,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-07-17 17:22:30,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2020-07-17 17:22:30,323 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 81 [2020-07-17 17:22:30,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:22:30,324 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2020-07-17 17:22:30,324 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-17 17:22:30,324 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2020-07-17 17:22:30,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-07-17 17:22:30,326 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:22:30,326 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:22:30,326 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-17 17:22:30,327 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:22:30,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:22:30,327 INFO L82 PathProgramCache]: Analyzing trace with hash 1356134305, now seen corresponding path program 8 times [2020-07-17 17:22:30,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:22:30,328 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [166656527] [2020-07-17 17:22:30,328 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:22:30,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:22:30,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:22:30,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:22:30,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:22:30,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:22:30,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:22:30,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:22:30,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:22:30,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:22:30,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:22:30,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:22:30,682 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2020-07-17 17:22:30,683 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [166656527] [2020-07-17 17:22:30,684 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:22:30,684 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-07-17 17:22:30,684 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554155846] [2020-07-17 17:22:30,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-07-17 17:22:30,686 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:22:30,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-07-17 17:22:30,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2020-07-17 17:22:30,687 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand 13 states. [2020-07-17 17:22:30,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:22:30,873 INFO L93 Difference]: Finished difference Result 71 states and 72 transitions. [2020-07-17 17:22:30,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-07-17 17:22:30,874 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 90 [2020-07-17 17:22:30,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:22:30,876 INFO L225 Difference]: With dead ends: 71 [2020-07-17 17:22:30,876 INFO L226 Difference]: Without dead ends: 65 [2020-07-17 17:22:30,880 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=167, Invalid=295, Unknown=0, NotChecked=0, Total=462 [2020-07-17 17:22:30,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-07-17 17:22:30,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2020-07-17 17:22:30,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-07-17 17:22:30,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 66 transitions. [2020-07-17 17:22:30,906 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 66 transitions. Word has length 90 [2020-07-17 17:22:30,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:22:30,907 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 66 transitions. [2020-07-17 17:22:30,907 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-07-17 17:22:30,907 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 66 transitions. [2020-07-17 17:22:30,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-07-17 17:22:30,911 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:22:30,911 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:22:30,911 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-17 17:22:30,912 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:22:30,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:22:30,917 INFO L82 PathProgramCache]: Analyzing trace with hash -928437697, now seen corresponding path program 9 times [2020-07-17 17:22:30,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:22:30,918 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1722548471] [2020-07-17 17:22:30,918 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:22:30,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:22:30,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:22:30,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:22:31,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:22:31,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:22:31,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:22:31,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:22:31,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:22:31,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:22:31,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:22:31,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:22:31,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:22:31,363 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2020-07-17 17:22:31,365 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1722548471] [2020-07-17 17:22:31,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:22:31,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-07-17 17:22:31,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306086795] [2020-07-17 17:22:31,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-17 17:22:31,367 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:22:31,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-17 17:22:31,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2020-07-17 17:22:31,368 INFO L87 Difference]: Start difference. First operand 65 states and 66 transitions. Second operand 14 states. [2020-07-17 17:22:31,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:22:31,554 INFO L93 Difference]: Finished difference Result 76 states and 77 transitions. [2020-07-17 17:22:31,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-17 17:22:31,555 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 99 [2020-07-17 17:22:31,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:22:31,558 INFO L225 Difference]: With dead ends: 76 [2020-07-17 17:22:31,558 INFO L226 Difference]: Without dead ends: 70 [2020-07-17 17:22:31,563 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=200, Invalid=352, Unknown=0, NotChecked=0, Total=552 [2020-07-17 17:22:31,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-07-17 17:22:31,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-07-17 17:22:31,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-07-17 17:22:31,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 71 transitions. [2020-07-17 17:22:31,583 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 71 transitions. Word has length 99 [2020-07-17 17:22:31,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:22:31,585 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 71 transitions. [2020-07-17 17:22:31,585 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-17 17:22:31,586 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 71 transitions. [2020-07-17 17:22:31,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-07-17 17:22:31,588 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:22:31,588 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:22:31,589 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-07-17 17:22:31,589 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:22:31,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:22:31,590 INFO L82 PathProgramCache]: Analyzing trace with hash -276966773, now seen corresponding path program 10 times [2020-07-17 17:22:31,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:22:31,591 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1970712309] [2020-07-17 17:22:31,591 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:22:31,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:22:31,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:22:31,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:22:31,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:22:32,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:22:32,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:22:32,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:22:32,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:22:32,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:22:32,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:22:32,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:22:32,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:22:32,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:22:32,784 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 234 proven. 20 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2020-07-17 17:22:32,785 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1970712309] [2020-07-17 17:22:32,785 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:22:32,785 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-07-17 17:22:32,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463776655] [2020-07-17 17:22:32,786 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-07-17 17:22:32,787 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:22:32,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-07-17 17:22:32,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=718, Unknown=0, NotChecked=0, Total=870 [2020-07-17 17:22:32,788 INFO L87 Difference]: Start difference. First operand 70 states and 71 transitions. Second operand 30 states. [2020-07-17 17:22:34,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:22:34,597 INFO L93 Difference]: Finished difference Result 70 states and 71 transitions. [2020-07-17 17:22:34,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-07-17 17:22:34,597 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 108 [2020-07-17 17:22:34,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:22:34,598 INFO L225 Difference]: With dead ends: 70 [2020-07-17 17:22:34,599 INFO L226 Difference]: Without dead ends: 0 [2020-07-17 17:22:34,602 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 537 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=788, Invalid=3244, Unknown=0, NotChecked=0, Total=4032 [2020-07-17 17:22:34,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-17 17:22:34,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-17 17:22:34,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-17 17:22:34,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-17 17:22:34,603 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 108 [2020-07-17 17:22:34,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:22:34,603 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-17 17:22:34,603 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-07-17 17:22:34,603 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-17 17:22:34,604 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 17:22:34,604 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-07-17 17:22:34,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-17 17:22:34,988 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 59 [2020-07-17 17:22:35,253 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 59 [2020-07-17 17:22:35,773 WARN L193 SmtUtils]: Spent 491.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 74 [2020-07-17 17:22:36,064 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 62 [2020-07-17 17:22:36,318 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 62 [2020-07-17 17:22:36,346 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-17 17:22:36,347 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-07-17 17:22:36,347 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-07-17 17:22:36,347 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-17 17:22:36,347 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-17 17:22:36,348 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-07-17 17:22:36,348 INFO L264 CegarLoopResult]: At program point sumEXIT(lines 3 9) the Hoare annotation is: (let ((.cse3 (+ |sum_#in~n| |sum_#in~m|))) (let ((.cse0 (= sum_~m |sum_#in~m|)) (.cse1 (= sum_~n |sum_#in~n|)) (.cse2 (<= |sum_#res| .cse3))) (or (and (<= (+ |sum_#in~m| 9) |sum_#res|) .cse0 (<= |sum_#in~n| 9) .cse1 .cse2) (and .cse0 .cse1 .cse2 (<= |sum_#in~n| 8) (<= (+ |sum_#in~m| 8) |sum_#res|)) (and (<= |sum_#in~n| 1) .cse0 .cse1 (<= (+ |sum_#in~m| 1) |sum_#res|) .cse2) (and .cse0 .cse1 .cse2 (<= |sum_#in~n| 4) (<= (+ |sum_#in~m| 4) |sum_#res|)) (and .cse0 .cse1 (<= .cse3 |sum_#res|) (<= |sum_#res| |sum_#in~m|)) (and (<= |sum_#in~n| 5) .cse0 (<= (+ |sum_#in~m| 5) |sum_#res|) .cse1 .cse2) (and .cse0 .cse1 .cse2 (<= (+ |sum_#in~m| 7) |sum_#res|) (<= |sum_#in~n| 7)) (and .cse0 (<= (+ |sum_#in~m| 10) |sum_#res|) .cse1 .cse2) (and (<= (+ |sum_#in~m| 6) |sum_#res|) .cse0 .cse1 .cse2 (<= |sum_#in~n| 6)) (and .cse0 .cse1 .cse2 (<= |sum_#in~n| 3) (<= (+ |sum_#in~m| 3) |sum_#res|)) (and .cse0 (<= |sum_#in~n| 2) .cse1 .cse2 (<= (+ |sum_#in~m| 2) |sum_#res|))))) [2020-07-17 17:22:36,349 INFO L264 CegarLoopResult]: At program point L7(line 7) the Hoare annotation is: (and (= sum_~m |sum_#in~m|) (= sum_~n |sum_#in~n|) (<= 1 sum_~n)) [2020-07-17 17:22:36,349 INFO L264 CegarLoopResult]: At program point L7-1(line 7) the Hoare annotation is: (let ((.cse0 (= sum_~m |sum_#in~m|)) (.cse1 (= sum_~n |sum_#in~n|)) (.cse2 (<= |sum_#t~ret0| (+ |sum_#in~n| |sum_#in~m|)))) (or (and .cse0 (<= (+ |sum_#in~m| 4) |sum_#t~ret0|) .cse1 (<= |sum_#in~n| 4) .cse2) (and (<= (+ |sum_#in~m| 1) |sum_#t~ret0|) (<= |sum_#in~n| 1) .cse0 .cse1 .cse2) (and .cse0 (<= |sum_#in~n| 9) .cse1 (<= (+ |sum_#in~m| 9) |sum_#t~ret0|) .cse2) (and .cse0 (<= (+ |sum_#in~m| 6) |sum_#t~ret0|) .cse1 (<= |sum_#in~n| 6) .cse2) (and .cse0 .cse1 (<= |sum_#in~n| 3) (<= (+ |sum_#in~m| 3) |sum_#t~ret0|) .cse2) (and (<= |sum_#in~n| 5) .cse0 .cse1 (<= (+ |sum_#in~m| 5) |sum_#t~ret0|) .cse2) (and .cse0 (<= |sum_#in~n| 2) .cse1 (<= (+ |sum_#in~m| 2) |sum_#t~ret0|) .cse2) (and .cse0 .cse1 (<= (+ |sum_#in~m| 7) |sum_#t~ret0|) (<= |sum_#in~n| 7) .cse2) (and .cse0 .cse1 (<= (+ |sum_#in~m| 10) |sum_#t~ret0|) .cse2) (and (<= (+ |sum_#in~m| 8) |sum_#t~ret0|) .cse0 .cse1 (<= |sum_#in~n| 8) .cse2))) [2020-07-17 17:22:36,349 INFO L264 CegarLoopResult]: At program point L5(line 5) the Hoare annotation is: (and (= sum_~m |sum_#in~m|) (= sum_~n |sum_#in~n|) (<= |sum_#in~n| 0)) [2020-07-17 17:22:36,350 INFO L264 CegarLoopResult]: At program point L7-2(line 7) the Hoare annotation is: (let ((.cse0 (= sum_~m |sum_#in~m|)) (.cse1 (= sum_~n |sum_#in~n|)) (.cse2 (<= |sum_#t~ret0| (+ |sum_#in~n| |sum_#in~m|)))) (or (and .cse0 (<= (+ |sum_#in~m| 4) |sum_#t~ret0|) .cse1 (<= |sum_#in~n| 4) .cse2) (and (<= (+ |sum_#in~m| 1) |sum_#t~ret0|) (<= |sum_#in~n| 1) .cse0 .cse1 .cse2) (and .cse0 (<= |sum_#in~n| 9) .cse1 (<= (+ |sum_#in~m| 9) |sum_#t~ret0|) .cse2) (and .cse0 (<= (+ |sum_#in~m| 6) |sum_#t~ret0|) .cse1 (<= |sum_#in~n| 6) .cse2) (and .cse0 .cse1 (<= |sum_#in~n| 3) (<= (+ |sum_#in~m| 3) |sum_#t~ret0|) .cse2) (and (<= |sum_#in~n| 5) .cse0 .cse1 (<= (+ |sum_#in~m| 5) |sum_#t~ret0|) .cse2) (and .cse0 (<= |sum_#in~n| 2) .cse1 (<= (+ |sum_#in~m| 2) |sum_#t~ret0|) .cse2) (and .cse0 .cse1 (<= (+ |sum_#in~m| 7) |sum_#t~ret0|) (<= |sum_#in~n| 7) .cse2) (and .cse0 .cse1 (<= (+ |sum_#in~m| 10) |sum_#t~ret0|) .cse2) (and (<= (+ |sum_#in~m| 8) |sum_#t~ret0|) .cse0 .cse1 (<= |sum_#in~n| 8) .cse2))) [2020-07-17 17:22:36,350 INFO L264 CegarLoopResult]: At program point L4(lines 4 8) the Hoare annotation is: (and (= sum_~m |sum_#in~m|) (= sum_~n |sum_#in~n|)) [2020-07-17 17:22:36,350 INFO L264 CegarLoopResult]: At program point L7-3(line 7) the Hoare annotation is: (and (let ((.cse12 (+ |sum_#in~n| |sum_#in~m|))) (let ((.cse1 (= sum_~m |sum_#in~m|)) (.cse2 (<= |sum_#res| .cse12)) (.cse3 (<= |sum_#t~ret0| .cse12))) (or (let ((.cse0 (+ |sum_#in~m| 9))) (and (<= .cse0 |sum_#res|) .cse1 .cse2 (<= .cse0 |sum_#t~ret0|) .cse3)) (let ((.cse4 (+ |sum_#in~m| 4))) (and .cse1 (<= .cse4 |sum_#t~ret0|) .cse2 (<= |sum_#in~n| 4) (<= .cse4 |sum_#res|) .cse3)) (let ((.cse5 (+ |sum_#in~m| 7))) (and .cse1 .cse2 (<= .cse5 |sum_#t~ret0|) (<= .cse5 |sum_#res|) (<= |sum_#in~n| 7) .cse3)) (let ((.cse6 (+ |sum_#in~m| 8))) (and (<= .cse6 |sum_#t~ret0|) .cse1 .cse2 (<= |sum_#in~n| 8) (<= .cse6 |sum_#res|) .cse3)) (let ((.cse7 (+ |sum_#in~m| 2))) (and .cse1 (<= |sum_#in~n| 2) (<= .cse7 |sum_#t~ret0|) .cse2 (<= .cse7 |sum_#res|) .cse3)) (let ((.cse8 (+ |sum_#in~m| 5))) (and (<= |sum_#in~n| 5) .cse1 (<= .cse8 |sum_#res|) .cse2 (<= .cse8 |sum_#t~ret0|) .cse3)) (let ((.cse9 (+ |sum_#in~m| 6))) (and (<= .cse9 |sum_#res|) .cse1 (<= .cse9 |sum_#t~ret0|) .cse2 (<= |sum_#in~n| 6) .cse3)) (let ((.cse10 (+ |sum_#in~m| 3))) (and .cse1 .cse2 (<= |sum_#in~n| 3) (<= .cse10 |sum_#res|) (<= .cse10 |sum_#t~ret0|) .cse3)) (let ((.cse11 (+ |sum_#in~m| 1))) (and (<= .cse11 |sum_#t~ret0|) (<= |sum_#in~n| 1) .cse1 (<= .cse11 |sum_#res|) .cse2 .cse3))))) (let ((.cse13 (= sum_~n |sum_#in~n|))) (or (and (<= |sum_#in~n| 9) .cse13) (let ((.cse14 (+ |sum_#in~m| 10))) (and (<= .cse14 |sum_#res|) .cse13 (<= .cse14 |sum_#t~ret0|)))))) [2020-07-17 17:22:36,350 INFO L264 CegarLoopResult]: At program point L3(lines 3 9) the Hoare annotation is: (= sum_~n |sum_#in~n|) [2020-07-17 17:22:36,351 INFO L264 CegarLoopResult]: At program point sumFINAL(lines 3 9) the Hoare annotation is: (let ((.cse3 (+ |sum_#in~n| |sum_#in~m|))) (let ((.cse0 (= sum_~m |sum_#in~m|)) (.cse1 (= sum_~n |sum_#in~n|)) (.cse2 (<= |sum_#res| .cse3))) (or (and (<= (+ |sum_#in~m| 9) |sum_#res|) .cse0 (<= |sum_#in~n| 9) .cse1 .cse2) (and .cse0 .cse1 .cse2 (<= |sum_#in~n| 8) (<= (+ |sum_#in~m| 8) |sum_#res|)) (and (<= |sum_#in~n| 1) .cse0 .cse1 (<= (+ |sum_#in~m| 1) |sum_#res|) .cse2) (and .cse0 .cse1 .cse2 (<= |sum_#in~n| 4) (<= (+ |sum_#in~m| 4) |sum_#res|)) (and .cse0 .cse1 (<= .cse3 |sum_#res|) (<= |sum_#res| |sum_#in~m|)) (and (<= |sum_#in~n| 5) .cse0 (<= (+ |sum_#in~m| 5) |sum_#res|) .cse1 .cse2) (and .cse0 .cse1 .cse2 (<= (+ |sum_#in~m| 7) |sum_#res|) (<= |sum_#in~n| 7)) (and .cse0 (<= (+ |sum_#in~m| 10) |sum_#res|) .cse1 .cse2) (and (<= (+ |sum_#in~m| 6) |sum_#res|) .cse0 .cse1 .cse2 (<= |sum_#in~n| 6)) (and .cse0 .cse1 .cse2 (<= |sum_#in~n| 3) (<= (+ |sum_#in~m| 3) |sum_#res|)) (and .cse0 (<= |sum_#in~n| 2) .cse1 .cse2 (<= (+ |sum_#in~m| 2) |sum_#res|))))) [2020-07-17 17:22:36,351 INFO L271 CegarLoopResult]: At program point sumENTRY(lines 3 9) the Hoare annotation is: true [2020-07-17 17:22:36,351 INFO L264 CegarLoopResult]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) the Hoare annotation is: false [2020-07-17 17:22:36,351 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 11 18) the Hoare annotation is: true [2020-07-17 17:22:36,352 INFO L264 CegarLoopResult]: At program point mainEXIT(lines 11 18) the Hoare annotation is: (<= 10 main_~a~0) [2020-07-17 17:22:36,352 INFO L264 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: false [2020-07-17 17:22:36,352 INFO L264 CegarLoopResult]: At program point L15(lines 15 17) the Hoare annotation is: (let ((.cse0 (+ main_~a~0 main_~b~0))) (and (<= main_~a~0 10) (<= main_~result~0 .cse0) (<= .cse0 main_~result~0) (<= 10 main_~a~0))) [2020-07-17 17:22:36,352 INFO L264 CegarLoopResult]: At program point L14(line 14) the Hoare annotation is: (and (<= main_~a~0 10) (<= 10 main_~a~0)) [2020-07-17 17:22:36,352 INFO L264 CegarLoopResult]: At program point L13(line 13) the Hoare annotation is: (and (<= main_~a~0 10) (<= 10 main_~a~0)) [2020-07-17 17:22:36,352 INFO L264 CegarLoopResult]: At program point L14-1(line 14) the Hoare annotation is: (let ((.cse0 (+ main_~a~0 main_~b~0))) (and (<= main_~a~0 10) (<= .cse0 |main_#t~ret1|) (<= 10 main_~a~0) (<= |main_#t~ret1| .cse0))) [2020-07-17 17:22:36,352 INFO L264 CegarLoopResult]: At program point L15-2(lines 11 18) the Hoare annotation is: (<= 10 main_~a~0) [2020-07-17 17:22:36,353 INFO L264 CegarLoopResult]: At program point L14-2(line 14) the Hoare annotation is: (let ((.cse0 (+ main_~a~0 main_~b~0))) (and (<= main_~a~0 10) (<= .cse0 |main_#t~ret1|) (<= 10 main_~a~0) (<= |main_#t~ret1| .cse0))) [2020-07-17 17:22:36,353 INFO L264 CegarLoopResult]: At program point L14-3(line 14) the Hoare annotation is: (let ((.cse0 (+ main_~a~0 main_~b~0))) (and (<= main_~a~0 10) (<= .cse0 |main_#t~ret1|) (<= main_~result~0 .cse0) (<= .cse0 main_~result~0) (<= 10 main_~a~0) (<= |main_#t~ret1| .cse0))) [2020-07-17 17:22:36,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 05:22:36 BoogieIcfgContainer [2020-07-17 17:22:36,389 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 17:22:36,393 INFO L168 Benchmark]: Toolchain (without parser) took 10688.97 ms. Allocated memory was 143.1 MB in the beginning and 366.5 MB in the end (delta: 223.3 MB). Free memory was 101.6 MB in the beginning and 240.5 MB in the end (delta: -138.9 MB). Peak memory consumption was 204.6 MB. Max. memory is 7.1 GB. [2020-07-17 17:22:36,395 INFO L168 Benchmark]: CDTParser took 1.34 ms. Allocated memory is still 143.1 MB. Free memory was 119.8 MB in the beginning and 119.6 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-17 17:22:36,396 INFO L168 Benchmark]: CACSL2BoogieTranslator took 269.91 ms. Allocated memory is still 143.1 MB. Free memory was 101.2 MB in the beginning and 92.0 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2020-07-17 17:22:36,398 INFO L168 Benchmark]: Boogie Preprocessor took 37.43 ms. Allocated memory is still 143.1 MB. Free memory was 92.0 MB in the beginning and 90.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-07-17 17:22:36,398 INFO L168 Benchmark]: RCFGBuilder took 500.44 ms. Allocated memory was 143.1 MB in the beginning and 202.4 MB in the end (delta: 59.2 MB). Free memory was 90.6 MB in the beginning and 169.8 MB in the end (delta: -79.1 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-07-17 17:22:36,400 INFO L168 Benchmark]: TraceAbstraction took 9872.46 ms. Allocated memory was 202.4 MB in the beginning and 366.5 MB in the end (delta: 164.1 MB). Free memory was 169.8 MB in the beginning and 240.5 MB in the end (delta: -70.8 MB). Peak memory consumption was 213.4 MB. Max. memory is 7.1 GB. [2020-07-17 17:22:36,411 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.34 ms. Allocated memory is still 143.1 MB. Free memory was 119.8 MB in the beginning and 119.6 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 269.91 ms. Allocated memory is still 143.1 MB. Free memory was 101.2 MB in the beginning and 92.0 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 37.43 ms. Allocated memory is still 143.1 MB. Free memory was 92.0 MB in the beginning and 90.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 500.44 ms. Allocated memory was 143.1 MB in the beginning and 202.4 MB in the end (delta: 59.2 MB). Free memory was 90.6 MB in the beginning and 169.8 MB in the end (delta: -79.1 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 9872.46 ms. Allocated memory was 202.4 MB in the beginning and 366.5 MB in the end (delta: 164.1 MB). Free memory was 169.8 MB in the beginning and 240.5 MB in the end (delta: -70.8 MB). Peak memory consumption was 213.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 16]: 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 - ProcedureContractResult [Line: 3]: Procedure Contract for sum Derived contract for procedure sum: (((((((((((((\old(m) + 9 <= \result && m == \old(m)) && \old(n) <= 9) && n == \old(n)) && \result <= \old(n) + \old(m)) || ((((m == \old(m) && n == \old(n)) && \result <= \old(n) + \old(m)) && \old(n) <= 8) && \old(m) + 8 <= \result)) || ((((\old(n) <= 1 && m == \old(m)) && n == \old(n)) && \old(m) + 1 <= \result) && \result <= \old(n) + \old(m))) || ((((m == \old(m) && n == \old(n)) && \result <= \old(n) + \old(m)) && \old(n) <= 4) && \old(m) + 4 <= \result)) || (((m == \old(m) && n == \old(n)) && \old(n) + \old(m) <= \result) && \result <= \old(m))) || ((((\old(n) <= 5 && m == \old(m)) && \old(m) + 5 <= \result) && n == \old(n)) && \result <= \old(n) + \old(m))) || ((((m == \old(m) && n == \old(n)) && \result <= \old(n) + \old(m)) && \old(m) + 7 <= \result) && \old(n) <= 7)) || (((m == \old(m) && \old(m) + 10 <= \result) && n == \old(n)) && \result <= \old(n) + \old(m))) || ((((\old(m) + 6 <= \result && m == \old(m)) && n == \old(n)) && \result <= \old(n) + \old(m)) && \old(n) <= 6)) || ((((m == \old(m) && n == \old(n)) && \result <= \old(n) + \old(m)) && \old(n) <= 3) && \old(m) + 3 <= \result)) || ((((m == \old(m) && \old(n) <= 2) && n == \old(n)) && \result <= \old(n) + \old(m)) && \old(m) + 2 <= \result) - ProcedureContractResult [Line: 11]: Procedure Contract for main Derived contract for procedure main: 10 <= a - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 8.0s, OverallIterations: 11, TraceHistogramMax: 11, AutomataDifference: 3.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 215 SDtfs, 343 SDslu, 960 SDs, 0 SdLazy, 818 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 367 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 822 ImplicationChecksByTransitivity, 3.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=70occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 27 LocationsWithAnnotation, 37 PreInvPairs, 187 NumberOfFragments, 1224 HoareAnnotationTreeSize, 37 FomulaSimplifications, 1040 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 27 FomulaSimplificationsInter, 477 FormulaSimplificationTreeSizeReductionInter, 1.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.7s InterpolantComputationTime, 693 NumberOfCodeBlocks, 693 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 682 ConstructedInterpolants, 0 QuantifiedInterpolants, 189564 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 1 PerfectInterpolantSequences, 1050/1760 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...