/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/loop-lit/jm2006.c.i.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 23:15:16,574 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 23:15:16,579 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 23:15:16,624 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 23:15:16,624 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 23:15:16,636 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 23:15:16,638 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 23:15:16,640 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 23:15:16,644 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 23:15:16,646 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 23:15:16,647 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 23:15:16,649 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 23:15:16,649 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 23:15:16,650 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 23:15:16,655 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 23:15:16,656 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 23:15:16,659 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 23:15:16,662 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 23:15:16,666 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 23:15:16,674 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 23:15:16,675 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 23:15:16,679 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 23:15:16,681 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 23:15:16,682 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 23:15:16,687 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 23:15:16,700 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 23:15:16,701 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 23:15:16,703 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 23:15:16,704 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 23:15:16,729 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 23:15:16,729 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 23:15:16,732 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 23:15:16,732 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 23:15:16,732 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 23:15:16,733 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 23:15:16,733 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 23:15:16,733 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 23:15:16,733 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 23:15:16,734 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 23:15:16,735 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 23:15:16,735 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 23:15:16,735 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 23:15:16,735 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 23:15:16,736 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 23:15:16,736 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 23:15:16,736 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 23:15:16,737 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 23:15:16,737 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 23:15:16,737 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 23:15:16,737 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 23:15:16,738 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 23:15:16,738 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 [2020-09-04 23:15:17,195 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 23:15:17,212 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 23:15:17,217 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 23:15:17,218 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 23:15:17,219 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 23:15:17,220 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/jm2006.c.i.v+cfa-reducer.c [2020-09-04 23:15:17,321 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8ffdd8e68/e54afb6a51744c6da082abc335759b53/FLAG28135ccf1 [2020-09-04 23:15:17,853 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 23:15:17,854 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-lit/jm2006.c.i.v+cfa-reducer.c [2020-09-04 23:15:17,862 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8ffdd8e68/e54afb6a51744c6da082abc335759b53/FLAG28135ccf1 [2020-09-04 23:15:18,217 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8ffdd8e68/e54afb6a51744c6da082abc335759b53 [2020-09-04 23:15:18,232 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 23:15:18,234 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 23:15:18,235 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 23:15:18,235 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 23:15:18,239 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 23:15:18,240 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 11:15:18" (1/1) ... [2020-09-04 23:15:18,244 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7673bb3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:15:18, skipping insertion in model container [2020-09-04 23:15:18,244 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 11:15:18" (1/1) ... [2020-09-04 23:15:18,253 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 23:15:18,280 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 23:15:18,522 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 23:15:18,528 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 23:15:18,548 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 23:15:18,564 INFO L208 MainTranslator]: Completed translation [2020-09-04 23:15:18,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:15:18 WrapperNode [2020-09-04 23:15:18,565 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 23:15:18,565 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 23:15:18,565 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 23:15:18,566 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 23:15:18,579 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:15:18" (1/1) ... [2020-09-04 23:15:18,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:15:18" (1/1) ... [2020-09-04 23:15:18,585 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:15:18" (1/1) ... [2020-09-04 23:15:18,586 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:15:18" (1/1) ... [2020-09-04 23:15:18,666 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:15:18" (1/1) ... [2020-09-04 23:15:18,669 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:15:18" (1/1) ... [2020-09-04 23:15:18,671 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:15:18" (1/1) ... [2020-09-04 23:15:18,673 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 23:15:18,673 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 23:15:18,673 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 23:15:18,674 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 23:15:18,677 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:15:18" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 23:15:18,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 23:15:18,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 23:15:18,751 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-04 23:15:18,751 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 23:15:18,751 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 23:15:18,751 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 23:15:18,752 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-04 23:15:18,752 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 23:15:18,752 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 23:15:18,752 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 23:15:18,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 23:15:18,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 23:15:19,015 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 23:15:19,016 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-04 23:15:19,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 11:15:19 BoogieIcfgContainer [2020-09-04 23:15:19,024 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 23:15:19,036 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 23:15:19,036 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 23:15:19,047 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 23:15:19,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 11:15:18" (1/3) ... [2020-09-04 23:15:19,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f20577f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 11:15:19, skipping insertion in model container [2020-09-04 23:15:19,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:15:18" (2/3) ... [2020-09-04 23:15:19,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f20577f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 11:15:19, skipping insertion in model container [2020-09-04 23:15:19,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 11:15:19" (3/3) ... [2020-09-04 23:15:19,056 INFO L109 eAbstractionObserver]: Analyzing ICFG jm2006.c.i.v+cfa-reducer.c [2020-09-04 23:15:19,081 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 23:15:19,093 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 23:15:19,116 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 23:15:19,152 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 23:15:19,152 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 23:15:19,152 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-04 23:15:19,152 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 23:15:19,153 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 23:15:19,153 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 23:15:19,153 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 23:15:19,155 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 23:15:19,184 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-09-04 23:15:19,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-04 23:15:19,196 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:15:19,197 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:15:19,198 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:15:19,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:15:19,204 INFO L82 PathProgramCache]: Analyzing trace with hash 405390035, now seen corresponding path program 1 times [2020-09-04 23:15:19,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:15:19,215 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1213152400] [2020-09-04 23:15:19,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:15:19,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:19,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:15:19,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:19,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:15:19,674 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1213152400] [2020-09-04 23:15:19,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 23:15:19,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-04 23:15:19,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175103862] [2020-09-04 23:15:19,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 23:15:19,685 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:15:19,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 23:15:19,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-04 23:15:19,703 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 9 states. [2020-09-04 23:15:20,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:15:20,249 INFO L93 Difference]: Finished difference Result 65 states and 71 transitions. [2020-09-04 23:15:20,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-04 23:15:20,251 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2020-09-04 23:15:20,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:15:20,265 INFO L225 Difference]: With dead ends: 65 [2020-09-04 23:15:20,265 INFO L226 Difference]: Without dead ends: 34 [2020-09-04 23:15:20,270 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2020-09-04 23:15:20,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-09-04 23:15:20,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2020-09-04 23:15:20,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-09-04 23:15:20,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2020-09-04 23:15:20,324 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 26 [2020-09-04 23:15:20,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:15:20,324 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2020-09-04 23:15:20,325 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-04 23:15:20,325 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2020-09-04 23:15:20,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-04 23:15:20,326 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:15:20,326 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:15:20,326 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 23:15:20,327 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:15:20,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:15:20,327 INFO L82 PathProgramCache]: Analyzing trace with hash -86090943, now seen corresponding path program 1 times [2020-09-04 23:15:20,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:15:20,328 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [531965518] [2020-09-04 23:15:20,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:15:20,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:20,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:15:20,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:20,606 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:15:20,607 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [531965518] [2020-09-04 23:15:20,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:15:20,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-04 23:15:20,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044176645] [2020-09-04 23:15:20,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-04 23:15:20,610 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:15:20,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-04 23:15:20,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-04 23:15:20,611 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 11 states. [2020-09-04 23:15:20,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:15:20,941 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2020-09-04 23:15:20,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-04 23:15:20,941 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 31 [2020-09-04 23:15:20,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:15:20,942 INFO L225 Difference]: With dead ends: 34 [2020-09-04 23:15:20,942 INFO L226 Difference]: Without dead ends: 0 [2020-09-04 23:15:20,944 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2020-09-04 23:15:20,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-04 23:15:20,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-04 23:15:20,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-04 23:15:20,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-04 23:15:20,946 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2020-09-04 23:15:20,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:15:20,946 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-04 23:15:20,946 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-04 23:15:20,946 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-04 23:15:20,946 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-04 23:15:20,948 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 23:15:20,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-04 23:15:21,621 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 27 [2020-09-04 23:15:21,852 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-04 23:15:21,853 INFO L271 CegarLoopResult]: At program point L10(line 10) the Hoare annotation is: true [2020-09-04 23:15:21,853 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~__return_main~0 |old(~__return_main~0)|) (= ~__return_72~0 |old(~__return_72~0)|)) [2020-09-04 23:15:21,853 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-09-04 23:15:21,853 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-09-04 23:15:21,854 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-04 23:15:21,856 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-04 23:15:21,856 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-09-04 23:15:21,856 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 4 6) no Hoare annotation was computed. [2020-09-04 23:15:21,856 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-09-04 23:15:21,857 INFO L268 CegarLoopResult]: For program point L5-1(line 5) no Hoare annotation was computed. [2020-09-04 23:15:21,857 INFO L268 CegarLoopResult]: For program point L5-3(lines 4 6) no Hoare annotation was computed. [2020-09-04 23:15:21,857 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 4 6) no Hoare annotation was computed. [2020-09-04 23:15:21,857 INFO L264 CegarLoopResult]: At program point L29(line 29) the Hoare annotation is: (= |old(~__return_72~0)| ~__return_72~0) [2020-09-04 23:15:21,858 INFO L264 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: (= |old(~__return_72~0)| ~__return_72~0) [2020-09-04 23:15:21,858 INFO L264 CegarLoopResult]: At program point mainEXIT(lines 11 68) the Hoare annotation is: (or (= |old(~__return_72~0)| ~__return_72~0) (not (= main_~__VERIFIER_assert__cond~0 0))) [2020-09-04 23:15:21,858 INFO L264 CegarLoopResult]: At program point L56(line 56) the Hoare annotation is: (and (= |old(~__return_72~0)| ~__return_72~0) (not (= main_~__VERIFIER_assert__cond~0 0))) [2020-09-04 23:15:21,858 INFO L264 CegarLoopResult]: At program point L23(lines 23 66) the Hoare annotation is: (= |old(~__return_72~0)| ~__return_72~0) [2020-09-04 23:15:21,859 INFO L264 CegarLoopResult]: At program point L52(line 52) the Hoare annotation is: false [2020-09-04 23:15:21,863 INFO L264 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (= |old(~__return_72~0)| ~__return_72~0) [2020-09-04 23:15:21,863 INFO L264 CegarLoopResult]: At program point L17(lines 17 67) the Hoare annotation is: (= |old(~__return_72~0)| ~__return_72~0) [2020-09-04 23:15:21,863 INFO L264 CegarLoopResult]: At program point L48(line 48) the Hoare annotation is: (let ((.cse0 (not (= main_~__tmp_1~0 0))) (.cse1 (<= 0 main_~main__y~0)) (.cse2 (= |old(~__return_72~0)| ~__return_72~0)) (.cse3 (<= main_~main__y~0 0))) (or (let ((.cse5 (+ main_~main__i~0 main_~main__y~0)) (.cse4 (+ main_~main__j~0 main_~main__x~0))) (and .cse0 .cse1 .cse2 .cse3 (<= .cse4 .cse5) (<= .cse5 .cse4))) (and .cse0 .cse1 .cse2 .cse3 (<= main_~main__i~0 main_~main__x~0) (<= main_~main__x~0 main_~main__i~0)))) [2020-09-04 23:15:21,864 INFO L264 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: (= |old(~__return_72~0)| ~__return_72~0) [2020-09-04 23:15:21,865 INFO L264 CegarLoopResult]: At program point L15-1(line 15) the Hoare annotation is: (= |old(~__return_72~0)| ~__return_72~0) [2020-09-04 23:15:21,869 INFO L264 CegarLoopResult]: At program point L46(line 46) the Hoare annotation is: (let ((.cse0 (<= 0 main_~main__y~0)) (.cse1 (= |old(~__return_72~0)| ~__return_72~0)) (.cse2 (<= main_~main__y~0 0))) (or (and .cse0 .cse1 .cse2 (<= main_~main__i~0 main_~main__x~0) (<= main_~main__x~0 main_~main__i~0)) (let ((.cse4 (+ main_~main__i~0 main_~main__y~0)) (.cse3 (+ main_~main__j~0 main_~main__x~0))) (and .cse0 .cse1 .cse2 (<= .cse3 .cse4) (<= .cse4 .cse3))))) [2020-09-04 23:15:21,870 INFO L264 CegarLoopResult]: At program point L15-2(line 15) the Hoare annotation is: (= |old(~__return_72~0)| ~__return_72~0) [2020-09-04 23:15:21,870 INFO L264 CegarLoopResult]: At program point mainFINAL(lines 11 68) the Hoare annotation is: (or (= |old(~__return_72~0)| ~__return_72~0) (not (= main_~__VERIFIER_assert__cond~0 0))) [2020-09-04 23:15:21,870 INFO L264 CegarLoopResult]: At program point L42(lines 42 64) the Hoare annotation is: (let ((.cse5 (< 0 (+ main_~main__y~0 1))) (.cse6 (<= main_~main__y~0 0)) (.cse8 (+ main_~main__j~0 main_~main__x~0)) (.cse7 (+ main_~main__i~0 main_~main__y~0))) (let ((.cse1 (<= .cse8 .cse7)) (.cse0 (= |old(~__return_72~0)| ~__return_72~0)) (.cse3 (or .cse6 (<= .cse7 main_~main__j~0))) (.cse2 (<= .cse7 .cse8)) (.cse4 (or .cse5 (<= main_~main__j~0 .cse7)))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) (and (or .cse5 .cse1) .cse0 .cse3 (<= main_~main__i~0 main_~main__x~0) (or .cse6 .cse2) (<= main_~main__x~0 main_~main__i~0) .cse4)))) [2020-09-04 23:15:21,871 INFO L264 CegarLoopResult]: At program point L38(lines 28 66) the Hoare annotation is: (let ((.cse1 (+ main_~main__i~0 main_~main__y~0)) (.cse0 (+ main_~main__j~0 main_~main__x~0))) (and (= |old(~__return_72~0)| ~__return_72~0) (<= .cse0 .cse1) (<= .cse1 .cse0))) [2020-09-04 23:15:21,871 INFO L264 CegarLoopResult]: At program point L36(line 36) the Hoare annotation is: (let ((.cse1 (+ main_~main__j~0 main_~main__x~0 1)) (.cse0 (+ main_~main__i~0 main_~main__y~0))) (and (= |old(~__return_72~0)| ~__return_72~0) (<= .cse0 .cse1) (<= .cse1 .cse0))) [2020-09-04 23:15:21,871 INFO L264 CegarLoopResult]: At program point L34(line 34) the Hoare annotation is: (let ((.cse1 (+ main_~main__i~0 main_~main__y~0)) (.cse0 (+ main_~main__j~0 main_~main__x~0))) (and (= |old(~__return_72~0)| ~__return_72~0) (<= .cse0 .cse1) (<= .cse1 .cse0))) [2020-09-04 23:15:21,871 INFO L264 CegarLoopResult]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 51) the Hoare annotation is: false [2020-09-04 23:15:21,871 INFO L264 CegarLoopResult]: At program point L63(line 63) the Hoare annotation is: (= |old(~__return_72~0)| ~__return_72~0) [2020-09-04 23:15:21,872 INFO L264 CegarLoopResult]: At program point L30(line 30) the Hoare annotation is: (and (= |old(~__return_72~0)| ~__return_72~0) (<= main_~main__i~0 main_~main__x~0) (<= main_~main__x~0 main_~main__i~0)) [2020-09-04 23:15:21,872 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 11 68) the Hoare annotation is: (= |old(~__return_72~0)| ~__return_72~0) [2020-09-04 23:15:21,872 INFO L264 CegarLoopResult]: At program point L57(line 57) the Hoare annotation is: (not (= main_~__VERIFIER_assert__cond~0 0)) [2020-09-04 23:15:21,872 INFO L264 CegarLoopResult]: At program point L51(line 51) the Hoare annotation is: false [2020-09-04 23:15:21,873 INFO L264 CegarLoopResult]: At program point L49(lines 49 58) the Hoare annotation is: (let ((.cse0 (not (= main_~__tmp_1~0 0))) (.cse1 (<= 0 main_~main__y~0)) (.cse2 (= |old(~__return_72~0)| ~__return_72~0)) (.cse3 (<= main_~main__y~0 0)) (.cse4 (not (= main_~__VERIFIER_assert__cond~0 0)))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 (<= main_~main__i~0 main_~main__x~0) (<= main_~main__x~0 main_~main__i~0)) (let ((.cse6 (+ main_~main__i~0 main_~main__y~0)) (.cse5 (+ main_~main__j~0 main_~main__x~0))) (and .cse0 .cse1 .cse2 .cse3 (<= .cse5 .cse6) .cse4 (<= .cse6 .cse5))))) [2020-09-04 23:15:21,874 INFO L264 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: (= |old(~__return_72~0)| ~__return_72~0) [2020-09-04 23:15:21,875 INFO L264 CegarLoopResult]: At program point L16-1(line 16) the Hoare annotation is: (= |old(~__return_72~0)| ~__return_72~0) [2020-09-04 23:15:21,875 INFO L264 CegarLoopResult]: At program point L47(line 47) the Hoare annotation is: (let ((.cse0 (not (= main_~__tmp_1~0 0))) (.cse1 (<= 0 main_~main__y~0)) (.cse2 (= |old(~__return_72~0)| ~__return_72~0)) (.cse3 (<= main_~main__y~0 0))) (or (let ((.cse5 (+ main_~main__i~0 main_~main__y~0)) (.cse4 (+ main_~main__j~0 main_~main__x~0))) (and .cse0 .cse1 .cse2 .cse3 (<= .cse4 .cse5) (<= .cse5 .cse4))) (and .cse0 .cse1 .cse2 .cse3 (<= main_~main__i~0 main_~main__x~0) (<= main_~main__x~0 main_~main__i~0)))) [2020-09-04 23:15:21,875 INFO L264 CegarLoopResult]: At program point L14(line 14) the Hoare annotation is: (= |old(~__return_72~0)| ~__return_72~0) [2020-09-04 23:15:21,875 INFO L264 CegarLoopResult]: At program point L16-2(line 16) the Hoare annotation is: (= |old(~__return_72~0)| ~__return_72~0) [2020-09-04 23:15:21,875 INFO L264 CegarLoopResult]: At program point L45(line 45) the Hoare annotation is: (let ((.cse0 (<= 0 main_~main__y~0)) (.cse1 (= |old(~__return_72~0)| ~__return_72~0)) (.cse2 (<= main_~main__y~0 0))) (or (and .cse0 .cse1 .cse2 (<= main_~main__i~0 main_~main__x~0) (<= main_~main__x~0 main_~main__i~0)) (let ((.cse4 (+ main_~main__i~0 main_~main__y~0)) (.cse3 (+ main_~main__j~0 main_~main__x~0))) (and .cse0 .cse1 .cse2 (<= .cse3 .cse4) (<= .cse4 .cse3))))) [2020-09-04 23:15:21,876 INFO L264 CegarLoopResult]: At program point L37(line 37) the Hoare annotation is: (let ((.cse1 (+ main_~main__j~0 main_~main__x~0 1)) (.cse0 (+ main_~main__i~0 main_~main__y~0))) (and (= |old(~__return_72~0)| ~__return_72~0) (<= .cse0 .cse1) (<= .cse1 .cse0))) [2020-09-04 23:15:21,876 INFO L264 CegarLoopResult]: At program point L35(line 35) the Hoare annotation is: (let ((.cse1 (+ main_~main__i~0 main_~main__y~0)) (.cse0 (+ main_~main__j~0 main_~main__x~0))) (and (= |old(~__return_72~0)| ~__return_72~0) (<= .cse0 .cse1) (<= .cse1 .cse0))) [2020-09-04 23:15:21,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 11:15:21 BoogieIcfgContainer [2020-09-04 23:15:21,908 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 23:15:21,917 INFO L168 Benchmark]: Toolchain (without parser) took 3679.42 ms. Allocated memory was 140.0 MB in the beginning and 244.3 MB in the end (delta: 104.3 MB). Free memory was 104.3 MB in the beginning and 153.6 MB in the end (delta: -49.3 MB). Peak memory consumption was 113.2 MB. Max. memory is 7.1 GB. [2020-09-04 23:15:21,918 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 140.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 23:15:21,921 INFO L168 Benchmark]: CACSL2BoogieTranslator took 330.10 ms. Allocated memory is still 140.0 MB. Free memory was 104.0 MB in the beginning and 94.3 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-09-04 23:15:21,925 INFO L168 Benchmark]: Boogie Preprocessor took 107.55 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 94.3 MB in the beginning and 182.5 MB in the end (delta: -88.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. [2020-09-04 23:15:21,926 INFO L168 Benchmark]: RCFGBuilder took 351.02 ms. Allocated memory is still 203.4 MB. Free memory was 182.5 MB in the beginning and 167.5 MB in the end (delta: 15.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 7.1 GB. [2020-09-04 23:15:21,927 INFO L168 Benchmark]: TraceAbstraction took 2872.14 ms. Allocated memory was 203.4 MB in the beginning and 244.3 MB in the end (delta: 40.9 MB). Free memory was 166.9 MB in the beginning and 153.6 MB in the end (delta: 13.3 MB). Peak memory consumption was 112.4 MB. Max. memory is 7.1 GB. [2020-09-04 23:15:21,935 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 140.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 330.10 ms. Allocated memory is still 140.0 MB. Free memory was 104.0 MB in the beginning and 94.3 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 107.55 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 94.3 MB in the beginning and 182.5 MB in the end (delta: -88.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 351.02 ms. Allocated memory is still 203.4 MB. Free memory was 182.5 MB in the beginning and 167.5 MB in the end (delta: 15.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2872.14 ms. Allocated memory was 203.4 MB in the beginning and 244.3 MB in the end (delta: 40.9 MB). Free memory was 166.9 MB in the beginning and 153.6 MB in the end (delta: 13.3 MB). Peak memory consumption was 112.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 51]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: (\old(__return_72) == __return_72 && main__j + main__x <= main__i + main__y) && main__i + main__y <= main__j + main__x - ProcedureContractResult [Line: 11]: Procedure Contract for main Derived contract for procedure main: \old(__return_72) == __return_72 || !(__VERIFIER_assert__cond == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 46 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 55 SDtfs, 151 SDslu, 106 SDs, 0 SdLazy, 329 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred 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, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 41 LocationsWithAnnotation, 41 PreInvPairs, 63 NumberOfFragments, 521 HoareAnnotationTreeSize, 41 FomulaSimplifications, 552 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 41 FomulaSimplificationsInter, 121 FormulaSimplificationTreeSizeReductionInter, 0.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 57 NumberOfCodeBlocks, 57 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 55 ConstructedInterpolants, 0 QuantifiedInterpolants, 7980 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 0/1 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...