/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 -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/recursive-simple/sum_25x0-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 13:19:19,705 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 13:19:19,707 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 13:19:19,727 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 13:19:19,727 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 13:19:19,729 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 13:19:19,731 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 13:19:19,742 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 13:19:19,745 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 13:19:19,749 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 13:19:19,751 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 13:19:19,753 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 13:19:19,754 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 13:19:19,756 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 13:19:19,758 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 13:19:19,760 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 13:19:19,761 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 13:19:19,762 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 13:19:19,763 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 13:19:19,769 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 13:19:19,772 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 13:19:19,773 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 13:19:19,774 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 13:19:19,778 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 13:19:19,781 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-07 13:19:19,792 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 13:19:19,793 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 13:19:19,795 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 13:19:19,796 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-07 13:19:19,825 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 13:19:19,825 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 13:19:19,830 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 13:19:19,830 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 13:19:19,831 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 13:19:19,831 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 13:19:19,831 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 13:19:19,831 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 13:19:19,831 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 13:19:19,831 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 13:19:19,832 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 13:19:19,832 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 13:19:19,832 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 13:19:19,832 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 13:19:19,832 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 13:19:19,833 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 13:19:19,833 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 13:19:19,833 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 13:19:19,836 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 13:19:19,837 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 13:19:19,837 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 13:19:19,837 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 13:19:19,837 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-07 13:19:20,115 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 13:19:20,130 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 13:19:20,135 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 13:19:20,137 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 13:19:20,137 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 13:19:20,138 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/sum_25x0-1.c [2020-07-07 13:19:20,225 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69aca1256/ae039c87757c4e20aff89e9d738221cf/FLAGfaacddce3 [2020-07-07 13:19:20,707 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 13:19:20,707 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/sum_25x0-1.c [2020-07-07 13:19:20,712 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69aca1256/ae039c87757c4e20aff89e9d738221cf/FLAGfaacddce3 [2020-07-07 13:19:21,083 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69aca1256/ae039c87757c4e20aff89e9d738221cf [2020-07-07 13:19:21,095 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 13:19:21,097 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 13:19:21,098 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 13:19:21,098 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 13:19:21,102 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 13:19:21,103 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:19:21" (1/1) ... [2020-07-07 13:19:21,107 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7913cb97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:19:21, skipping insertion in model container [2020-07-07 13:19:21,107 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:19:21" (1/1) ... [2020-07-07 13:19:21,116 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 13:19:21,137 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 13:19:21,320 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:19:21,325 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 13:19:21,341 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:19:21,357 INFO L208 MainTranslator]: Completed translation [2020-07-07 13:19:21,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:19:21 WrapperNode [2020-07-07 13:19:21,357 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 13:19:21,358 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 13:19:21,358 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 13:19:21,358 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 13:19:21,374 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:19:21" (1/1) ... [2020-07-07 13:19:21,374 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:19:21" (1/1) ... [2020-07-07 13:19:21,380 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:19:21" (1/1) ... [2020-07-07 13:19:21,380 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:19:21" (1/1) ... [2020-07-07 13:19:21,385 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:19:21" (1/1) ... [2020-07-07 13:19:21,387 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:19:21" (1/1) ... [2020-07-07 13:19:21,388 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:19:21" (1/1) ... [2020-07-07 13:19:21,389 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 13:19:21,390 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 13:19:21,390 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 13:19:21,390 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 13:19:21,391 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:19:21" (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 [2020-07-07 13:19:21,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 13:19:21,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 13:19:21,543 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2020-07-07 13:19:21,543 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 13:19:21,543 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 13:19:21,543 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2020-07-07 13:19:21,544 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 13:19:21,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 13:19:21,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 13:19:21,724 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 13:19:21,724 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-07 13:19:21,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:19:21 BoogieIcfgContainer [2020-07-07 13:19:21,729 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 13:19:21,730 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 13:19:21,730 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 13:19:21,733 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 13:19:21,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 01:19:21" (1/3) ... [2020-07-07 13:19:21,735 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b34332 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:19:21, skipping insertion in model container [2020-07-07 13:19:21,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:19:21" (2/3) ... [2020-07-07 13:19:21,735 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b34332 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:19:21, skipping insertion in model container [2020-07-07 13:19:21,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:19:21" (3/3) ... [2020-07-07 13:19:21,738 INFO L109 eAbstractionObserver]: Analyzing ICFG sum_25x0-1.c [2020-07-07 13:19:21,756 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 13:19:21,763 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 13:19:21,779 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 13:19:21,802 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 13:19:21,802 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 13:19:21,802 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-07 13:19:21,802 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 13:19:21,803 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 13:19:21,803 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 13:19:21,803 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 13:19:21,803 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 13:19:21,817 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-07-07 13:19:21,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-07 13:19:21,826 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:19:21,828 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:19:21,828 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:19:21,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:19:21,833 INFO L82 PathProgramCache]: Analyzing trace with hash 989240825, now seen corresponding path program 1 times [2020-07-07 13:19:21,840 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:19:21,841 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [841015205] [2020-07-07 13:19:21,841 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:19:21,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:19:21,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:19:22,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:19:22,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:19:22,136 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:19:22,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [841015205] [2020-07-07 13:19:22,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:19:22,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-07 13:19:22,142 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751162936] [2020-07-07 13:19:22,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-07 13:19:22,148 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:19:22,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-07 13:19:22,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-07 13:19:22,168 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 6 states. [2020-07-07 13:19:22,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:19:22,265 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2020-07-07 13:19:22,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 13:19:22,267 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-07-07 13:19:22,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:19:22,278 INFO L225 Difference]: With dead ends: 39 [2020-07-07 13:19:22,278 INFO L226 Difference]: Without dead ends: 25 [2020-07-07 13:19:22,282 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-07 13:19:22,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-07-07 13:19:22,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-07-07 13:19:22,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-07-07 13:19:22,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2020-07-07 13:19:22,330 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 18 [2020-07-07 13:19:22,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:19:22,330 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2020-07-07 13:19:22,331 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-07 13:19:22,331 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2020-07-07 13:19:22,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-07 13:19:22,333 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:19:22,334 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] [2020-07-07 13:19:22,334 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 13:19:22,334 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:19:22,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:19:22,335 INFO L82 PathProgramCache]: Analyzing trace with hash 1852726759, now seen corresponding path program 1 times [2020-07-07 13:19:22,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:19:22,336 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1214234624] [2020-07-07 13:19:22,336 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Garbage collection #1: 11 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 11 to 19 Garbage collection #2: 19 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 19 to 37 Garbage collection #3: 37 nodes / 0 free / 0.001s / 0.001s total Resizing node table from 37 to 73 Garbage collection #1: 11 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 11 to 19 Garbage collection #2: 19 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 19 to 37 [2020-07-07 13:19:22,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:19:22,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:19:22,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:19:22,622 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:19:22,893 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:19:22,894 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1214234624] [2020-07-07 13:19:22,894 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:19:22,895 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-07-07 13:19:22,895 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153026995] [2020-07-07 13:19:22,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-07-07 13:19:22,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:19:22,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-07-07 13:19:22,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2020-07-07 13:19:22,900 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 16 states. [2020-07-07 13:19:23,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:19:23,181 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2020-07-07 13:19:23,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-07 13:19:23,182 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 27 [2020-07-07 13:19:23,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:19:23,183 INFO L225 Difference]: With dead ends: 25 [2020-07-07 13:19:23,183 INFO L226 Difference]: Without dead ends: 0 [2020-07-07 13:19:23,186 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2020-07-07 13:19:23,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-07 13:19:23,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-07 13:19:23,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-07 13:19:23,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-07 13:19:23,190 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2020-07-07 13:19:23,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:19:23,190 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-07 13:19:23,190 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-07-07 13:19:23,191 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-07 13:19:23,191 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-07 13:19:23,191 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 13:19:23,194 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-07 13:19:23,608 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-07 13:19:23,608 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-07-07 13:19:23,608 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-07-07 13:19:23,609 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-07 13:19:23,609 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-07 13:19:23,609 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-07-07 13:19:23,609 INFO L264 CegarLoopResult]: At program point sumEXIT(lines 3 9) the Hoare annotation is: (let ((.cse0 (= sum_~m |sum_#in~m|)) (.cse1 (= sum_~n |sum_#in~n|))) (or (not (< 0 (+ |sum_#in~n| 1))) (and .cse0 .cse1 (<= sum_~n 0)) (and (<= |sum_#in~n| 1) .cse0 (<= 0 (+ |sum_#res| 2147483648)) .cse1 (<= |sum_#res| 2147483647)))) [2020-07-07 13:19:23,610 INFO L264 CegarLoopResult]: At program point L7(line 7) the Hoare annotation is: (or (not (< 0 (+ |sum_#in~n| 1))) (and (= sum_~m |sum_#in~m|) (= sum_~n |sum_#in~n|) (< 0 sum_~n))) [2020-07-07 13:19:23,610 INFO L264 CegarLoopResult]: At program point L7-1(line 7) the Hoare annotation is: (or (not (< 0 (+ |sum_#in~n| 1))) (and (<= |sum_#in~n| 1) (= sum_~m |sum_#in~m|) (= sum_~n |sum_#in~n|) (< 0 sum_~n))) [2020-07-07 13:19:23,610 INFO L264 CegarLoopResult]: At program point L5(line 5) the Hoare annotation is: (let ((.cse0 (not (< 0 (+ |sum_#in~n| 1))))) (and (or .cse0 (= sum_~m |sum_#in~m|)) (or .cse0 (and (= sum_~n |sum_#in~n|) (<= sum_~n 0))))) [2020-07-07 13:19:23,610 INFO L264 CegarLoopResult]: At program point L7-2(line 7) the Hoare annotation is: (or (not (< 0 (+ |sum_#in~n| 1))) (and (<= |sum_#in~n| 1) (= sum_~m |sum_#in~m|) (<= |sum_#t~ret0| 2147483647) (= sum_~n |sum_#in~n|) (< 0 sum_~n) (<= 0 (+ |sum_#t~ret0| 2147483648)))) [2020-07-07 13:19:23,611 INFO L264 CegarLoopResult]: At program point L4(lines 4 8) the Hoare annotation is: (or (not (< 0 (+ |sum_#in~n| 1))) (and (= sum_~m |sum_#in~m|) (= sum_~n |sum_#in~n|))) [2020-07-07 13:19:23,611 INFO L264 CegarLoopResult]: At program point L7-3(line 7) the Hoare annotation is: (or (not (< 0 (+ |sum_#in~n| 1))) (and (<= |sum_#in~n| 1) (= sum_~m |sum_#in~m|) (<= |sum_#t~ret0| 2147483647) (= sum_~n |sum_#in~n|) (< 0 sum_~n) (= |sum_#res| |sum_#t~ret0|) (<= 0 (+ |sum_#t~ret0| 2147483648)))) [2020-07-07 13:19:23,611 INFO L264 CegarLoopResult]: At program point L3(lines 3 9) the Hoare annotation is: (or (not (< 0 (+ |sum_#in~n| 1))) (= sum_~n |sum_#in~n|)) [2020-07-07 13:19:23,611 INFO L264 CegarLoopResult]: At program point sumFINAL(lines 3 9) the Hoare annotation is: (let ((.cse0 (not (< 0 (+ |sum_#in~n| 1))))) (and (or .cse0 (= sum_~m |sum_#in~m|)) (let ((.cse1 (= sum_~n |sum_#in~n|))) (or .cse0 (and .cse1 (<= sum_~n 0)) (and (<= |sum_#in~n| 1) .cse1 (<= 0 (+ |sum_#res| 2147483648)) (<= |sum_#res| 2147483647)))))) [2020-07-07 13:19:23,612 INFO L271 CegarLoopResult]: At program point sumENTRY(lines 3 9) the Hoare annotation is: true [2020-07-07 13:19:23,612 INFO L264 CegarLoopResult]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) the Hoare annotation is: false [2020-07-07 13:19:23,612 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 11 18) the Hoare annotation is: true [2020-07-07 13:19:23,612 INFO L264 CegarLoopResult]: At program point mainEXIT(lines 11 18) the Hoare annotation is: (<= 25 main_~a~0) [2020-07-07 13:19:23,613 INFO L264 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: false [2020-07-07 13:19:23,613 INFO L264 CegarLoopResult]: At program point L15(lines 15 17) the Hoare annotation is: false [2020-07-07 13:19:23,613 INFO L264 CegarLoopResult]: At program point L14(line 14) the Hoare annotation is: (<= 25 main_~a~0) [2020-07-07 13:19:23,613 INFO L264 CegarLoopResult]: At program point L13(line 13) the Hoare annotation is: (<= 25 main_~a~0) [2020-07-07 13:19:23,614 INFO L264 CegarLoopResult]: At program point L14-1(line 14) the Hoare annotation is: false [2020-07-07 13:19:23,614 INFO L264 CegarLoopResult]: At program point L15-2(lines 11 18) the Hoare annotation is: (<= 25 main_~a~0) [2020-07-07 13:19:23,614 INFO L264 CegarLoopResult]: At program point L14-2(line 14) the Hoare annotation is: false [2020-07-07 13:19:23,614 INFO L264 CegarLoopResult]: At program point L14-3(line 14) the Hoare annotation is: false [2020-07-07 13:19:23,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 01:19:23 BoogieIcfgContainer [2020-07-07 13:19:23,636 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 13:19:23,639 INFO L168 Benchmark]: Toolchain (without parser) took 2541.65 ms. Allocated memory was 146.8 MB in the beginning and 233.3 MB in the end (delta: 86.5 MB). Free memory was 105.6 MB in the beginning and 131.5 MB in the end (delta: -25.8 MB). Peak memory consumption was 60.7 MB. Max. memory is 7.1 GB. [2020-07-07 13:19:23,640 INFO L168 Benchmark]: CDTParser took 0.94 ms. Allocated memory is still 146.8 MB. Free memory was 123.4 MB in the beginning and 123.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-07 13:19:23,641 INFO L168 Benchmark]: CACSL2BoogieTranslator took 260.07 ms. Allocated memory is still 146.8 MB. Free memory was 105.4 MB in the beginning and 96.1 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-07-07 13:19:23,642 INFO L168 Benchmark]: Boogie Preprocessor took 31.27 ms. Allocated memory is still 146.8 MB. Free memory was 96.1 MB in the beginning and 94.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-07-07 13:19:23,644 INFO L168 Benchmark]: RCFGBuilder took 339.04 ms. Allocated memory was 146.8 MB in the beginning and 203.9 MB in the end (delta: 57.1 MB). Free memory was 94.7 MB in the beginning and 171.6 MB in the end (delta: -76.8 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-07-07 13:19:23,645 INFO L168 Benchmark]: TraceAbstraction took 1906.15 ms. Allocated memory was 203.9 MB in the beginning and 233.3 MB in the end (delta: 29.4 MB). Free memory was 170.9 MB in the beginning and 131.5 MB in the end (delta: 39.5 MB). Peak memory consumption was 68.8 MB. Max. memory is 7.1 GB. [2020-07-07 13:19:23,649 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.94 ms. Allocated memory is still 146.8 MB. Free memory was 123.4 MB in the beginning and 123.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 260.07 ms. Allocated memory is still 146.8 MB. Free memory was 105.4 MB in the beginning and 96.1 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 31.27 ms. Allocated memory is still 146.8 MB. Free memory was 96.1 MB in the beginning and 94.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 339.04 ms. Allocated memory was 146.8 MB in the beginning and 203.9 MB in the end (delta: 57.1 MB). Free memory was 94.7 MB in the beginning and 171.6 MB in the end (delta: -76.8 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1906.15 ms. Allocated memory was 203.9 MB in the beginning and 233.3 MB in the end (delta: 29.4 MB). Free memory was 170.9 MB in the beginning and 131.5 MB in the end (delta: 39.5 MB). Peak memory consumption was 68.8 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: (!(0 < \old(n) + 1) || ((m == \old(m) && n == \old(n)) && n <= 0)) || ((((\old(n) <= 1 && m == \old(m)) && 0 <= \result + 2147483648) && n == \old(n)) && \result <= 2147483647) - ProcedureContractResult [Line: 11]: Procedure Contract for main Derived contract for procedure main: 25 <= a - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.3s, OverallIterations: 2, TraceHistogramMax: 2, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 34 SDtfs, 53 SDslu, 119 SDs, 0 SdLazy, 89 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 27 LocationsWithAnnotation, 37 PreInvPairs, 48 NumberOfFragments, 246 HoareAnnotationTreeSize, 37 FomulaSimplifications, 55 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 27 FomulaSimplificationsInter, 115 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...