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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-lit/jm2006.c.i.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:16:42,969 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:16:42,972 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:16:42,990 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:16:42,990 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:16:42,992 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:16:42,994 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:16:43,005 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:16:43,008 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:16:43,009 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:16:43,010 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:16:43,011 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:16:43,011 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:16:43,012 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:16:43,013 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:16:43,014 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:16:43,016 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:16:43,017 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:16:43,019 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:16:43,022 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:16:43,025 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:16:43,027 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:16:43,029 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:16:43,030 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:16:43,035 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 19:16:43,042 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:16:43,043 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:16:43,045 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:16:43,045 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:16:43,050 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:16:43,050 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:16:43,051 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:16:43,051 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:16:43,051 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:16:43,053 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:16:43,057 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:16:43,058 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 19:16:43,073 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:16:43,074 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:16:43,075 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:16:43,075 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:16:43,076 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:16:43,076 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:16:43,076 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:16:43,076 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:16:43,077 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:16:43,077 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:16:43,077 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:16:43,077 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:16:43,077 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:16:43,078 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:16:43,078 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:16:43,078 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:16:43,078 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:16:43,079 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:16:43,079 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:16:43,079 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:16:43,079 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:16:43,080 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:16:43,080 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:16:43,080 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:16:43,080 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:16:43,080 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:16:43,081 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:16:43,081 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:16:43,081 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:16:43,378 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:16:43,391 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:16:43,395 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:16:43,397 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:16:43,397 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:16:43,398 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/jm2006.c.i.v+cfa-reducer.c [2019-10-13 19:16:43,476 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e6d3d146/11f7fa8b27534661b11187b4e2dbd146/FLAGfcdd4f9b6 [2019-10-13 19:16:43,907 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:16:43,908 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/jm2006.c.i.v+cfa-reducer.c [2019-10-13 19:16:43,915 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e6d3d146/11f7fa8b27534661b11187b4e2dbd146/FLAGfcdd4f9b6 [2019-10-13 19:16:44,274 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e6d3d146/11f7fa8b27534661b11187b4e2dbd146 [2019-10-13 19:16:44,284 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:16:44,285 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:16:44,286 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:16:44,287 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:16:44,290 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:16:44,291 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:16:44" (1/1) ... [2019-10-13 19:16:44,295 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cd6405c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:16:44, skipping insertion in model container [2019-10-13 19:16:44,295 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:16:44" (1/1) ... [2019-10-13 19:16:44,303 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:16:44,323 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:16:44,479 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:16:44,484 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:16:44,499 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:16:44,514 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:16:44,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:16:44 WrapperNode [2019-10-13 19:16:44,514 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:16:44,515 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:16:44,515 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:16:44,515 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:16:44,601 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:16:44" (1/1) ... [2019-10-13 19:16:44,601 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:16:44" (1/1) ... [2019-10-13 19:16:44,606 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:16:44" (1/1) ... [2019-10-13 19:16:44,607 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:16:44" (1/1) ... [2019-10-13 19:16:44,613 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:16:44" (1/1) ... [2019-10-13 19:16:44,615 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:16:44" (1/1) ... [2019-10-13 19:16:44,617 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:16:44" (1/1) ... [2019-10-13 19:16:44,622 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:16:44,623 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:16:44,623 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:16:44,623 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:16:44,623 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:16:44" (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 [2019-10-13 19:16:44,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:16:44,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:16:44,678 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:16:44,678 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:16:44,679 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-13 19:16:44,679 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-13 19:16:44,680 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 19:16:44,680 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:16:44,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:16:44,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:16:44,861 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:16:44,862 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-13 19:16:44,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:16:44 BoogieIcfgContainer [2019-10-13 19:16:44,863 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:16:44,864 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:16:44,865 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:16:44,868 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:16:44,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:16:44" (1/3) ... [2019-10-13 19:16:44,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58ca8ba6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:16:44, skipping insertion in model container [2019-10-13 19:16:44,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:16:44" (2/3) ... [2019-10-13 19:16:44,871 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58ca8ba6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:16:44, skipping insertion in model container [2019-10-13 19:16:44,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:16:44" (3/3) ... [2019-10-13 19:16:44,873 INFO L109 eAbstractionObserver]: Analyzing ICFG jm2006.c.i.v+cfa-reducer.c [2019-10-13 19:16:44,895 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:16:44,916 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:16:44,945 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:16:44,993 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:16:44,993 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:16:44,993 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:16:44,993 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:16:44,994 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:16:44,994 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:16:44,994 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:16:44,994 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:16:45,012 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2019-10-13 19:16:45,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-10-13 19:16:45,018 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:16:45,019 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:16:45,021 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:16:45,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:16:45,027 INFO L82 PathProgramCache]: Analyzing trace with hash -696314067, now seen corresponding path program 1 times [2019-10-13 19:16:45,036 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:16:45,036 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551081627] [2019-10-13 19:16:45,037 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:16:45,037 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:16:45,037 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:16:45,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:16:45,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:16:45,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:16:45,336 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551081627] [2019-10-13 19:16:45,337 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:16:45,337 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 19:16:45,337 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325905646] [2019-10-13 19:16:45,342 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 19:16:45,343 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:16:45,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 19:16:45,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 19:16:45,362 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 7 states. [2019-10-13 19:16:45,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:16:45,742 INFO L93 Difference]: Finished difference Result 32 states and 38 transitions. [2019-10-13 19:16:45,744 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 19:16:45,745 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2019-10-13 19:16:45,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:16:45,759 INFO L225 Difference]: With dead ends: 32 [2019-10-13 19:16:45,759 INFO L226 Difference]: Without dead ends: 14 [2019-10-13 19:16:45,766 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:16:45,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-10-13 19:16:45,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-10-13 19:16:45,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-10-13 19:16:45,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2019-10-13 19:16:45,823 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2019-10-13 19:16:45,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:16:45,824 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2019-10-13 19:16:45,825 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 19:16:45,826 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2019-10-13 19:16:45,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-13 19:16:45,827 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:16:45,827 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:16:45,828 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:16:45,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:16:45,830 INFO L82 PathProgramCache]: Analyzing trace with hash -112838900, now seen corresponding path program 1 times [2019-10-13 19:16:45,830 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:16:45,831 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419378055] [2019-10-13 19:16:45,831 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:16:45,832 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:16:45,832 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:16:45,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:16:45,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:16:45,986 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:16:45,987 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419378055] [2019-10-13 19:16:45,987 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379652485] [2019-10-13 19:16:45,987 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:16:46,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:16:46,030 INFO L256 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 18 conjunts are in the unsatisfiable core [2019-10-13 19:16:46,036 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:16:46,120 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 19:16:46,141 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:16:46,142 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-13 19:16:46,142 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 10 [2019-10-13 19:16:46,142 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502692377] [2019-10-13 19:16:46,144 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 19:16:46,144 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:16:46,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 19:16:46,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:16:46,145 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 10 states. [2019-10-13 19:16:46,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:16:46,428 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2019-10-13 19:16:46,428 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 19:16:46,428 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2019-10-13 19:16:46,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:16:46,429 INFO L225 Difference]: With dead ends: 22 [2019-10-13 19:16:46,429 INFO L226 Difference]: Without dead ends: 16 [2019-10-13 19:16:46,431 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2019-10-13 19:16:46,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-10-13 19:16:46,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-10-13 19:16:46,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-10-13 19:16:46,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2019-10-13 19:16:46,436 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 13 [2019-10-13 19:16:46,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:16:46,436 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2019-10-13 19:16:46,436 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-13 19:16:46,437 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2019-10-13 19:16:46,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-13 19:16:46,437 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:16:46,438 INFO L380 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:16:46,643 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:16:46,643 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:16:46,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:16:46,644 INFO L82 PathProgramCache]: Analyzing trace with hash -1126058196, now seen corresponding path program 2 times [2019-10-13 19:16:46,645 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:16:46,645 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798439628] [2019-10-13 19:16:46,646 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:16:46,646 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:16:46,646 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:16:46,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:16:46,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:16:46,822 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 19:16:46,823 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798439628] [2019-10-13 19:16:46,823 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777537290] [2019-10-13 19:16:46,823 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:16:46,861 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-13 19:16:46,861 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 19:16:46,862 INFO L256 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 27 conjunts are in the unsatisfiable core [2019-10-13 19:16:46,864 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:16:46,967 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 19:16:46,981 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:16:46,981 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-13 19:16:46,982 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2019-10-13 19:16:46,982 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289374578] [2019-10-13 19:16:46,982 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-10-13 19:16:46,983 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:16:46,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-10-13 19:16:46,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2019-10-13 19:16:46,983 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 13 states. [2019-10-13 19:16:47,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:16:47,330 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2019-10-13 19:16:47,330 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 19:16:47,330 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 15 [2019-10-13 19:16:47,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:16:47,331 INFO L225 Difference]: With dead ends: 19 [2019-10-13 19:16:47,331 INFO L226 Difference]: Without dead ends: 0 [2019-10-13 19:16:47,332 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=110, Invalid=352, Unknown=0, NotChecked=0, Total=462 [2019-10-13 19:16:47,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-13 19:16:47,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-13 19:16:47,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-13 19:16:47,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-13 19:16:47,333 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2019-10-13 19:16:47,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:16:47,334 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-13 19:16:47,334 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-10-13 19:16:47,334 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-13 19:16:47,334 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-13 19:16:47,539 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:16:47,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-13 19:16:47,713 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-13 19:16:47,713 INFO L439 ceAbstractionStarter]: 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)|)) [2019-10-13 19:16:47,714 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-13 19:16:47,714 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-13 19:16:47,714 INFO L439 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: (and (<= 0 ~__return_72~0) (<= ~__return_72~0 0)) [2019-10-13 19:16:47,714 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-13 19:16:47,714 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-13 19:16:47,714 INFO L439 ceAbstractionStarter]: At program point mainENTRY(lines 8 65) the Hoare annotation is: (or (= ~__return_72~0 |old(~__return_72~0)|) (not (<= |old(~__return_72~0)| 0)) (not (<= 0 |old(~__return_72~0)|))) [2019-10-13 19:16:47,715 INFO L443 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 48) no Hoare annotation was computed. [2019-10-13 19:16:47,715 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 8 65) no Hoare annotation was computed. [2019-10-13 19:16:47,715 INFO L443 ceAbstractionStarter]: For program point L20(lines 20 63) no Hoare annotation was computed. [2019-10-13 19:16:47,715 INFO L443 ceAbstractionStarter]: For program point L48(line 48) no Hoare annotation was computed. [2019-10-13 19:16:47,715 INFO L443 ceAbstractionStarter]: For program point L14(lines 14 64) no Hoare annotation was computed. [2019-10-13 19:16:47,715 INFO L443 ceAbstractionStarter]: For program point L46(lines 46 55) no Hoare annotation was computed. [2019-10-13 19:16:47,715 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 8 65) no Hoare annotation was computed. [2019-10-13 19:16:47,716 INFO L443 ceAbstractionStarter]: For program point L39(lines 39 61) no Hoare annotation was computed. [2019-10-13 19:16:47,716 INFO L439 ceAbstractionStarter]: At program point L35(lines 25 63) the Hoare annotation is: (or (not (<= |old(~__return_72~0)| 0)) (not (<= 0 |old(~__return_72~0)|)) (let ((.cse1 (+ main_~main__i~0 main_~main__y~0)) (.cse0 (+ main_~main__j~0 main_~main__x~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0) (= ~__return_72~0 |old(~__return_72~0)|)))) [2019-10-13 19:16:47,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:16:47 BoogieIcfgContainer [2019-10-13 19:16:47,736 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-13 19:16:47,740 INFO L168 Benchmark]: Toolchain (without parser) took 3452.80 ms. Allocated memory was 138.9 MB in the beginning and 243.3 MB in the end (delta: 104.3 MB). Free memory was 104.0 MB in the beginning and 208.1 MB in the end (delta: -104.1 MB). Peak memory consumption was 114.6 MB. Max. memory is 7.1 GB. [2019-10-13 19:16:47,741 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 138.9 MB. Free memory was 122.2 MB in the beginning and 122.0 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2019-10-13 19:16:47,744 INFO L168 Benchmark]: CACSL2BoogieTranslator took 228.35 ms. Allocated memory is still 138.9 MB. Free memory was 103.8 MB in the beginning and 94.2 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2019-10-13 19:16:47,745 INFO L168 Benchmark]: Boogie Preprocessor took 107.18 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 94.2 MB in the beginning and 181.8 MB in the end (delta: -87.6 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2019-10-13 19:16:47,746 INFO L168 Benchmark]: RCFGBuilder took 240.88 ms. Allocated memory is still 203.4 MB. Free memory was 181.8 MB in the beginning and 170.6 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. [2019-10-13 19:16:47,754 INFO L168 Benchmark]: TraceAbstraction took 2871.69 ms. Allocated memory was 203.4 MB in the beginning and 243.3 MB in the end (delta: 39.8 MB). Free memory was 169.9 MB in the beginning and 208.1 MB in the end (delta: -38.1 MB). Peak memory consumption was 116.1 MB. Max. memory is 7.1 GB. [2019-10-13 19:16:47,766 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 138.9 MB. Free memory was 122.2 MB in the beginning and 122.0 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 228.35 ms. Allocated memory is still 138.9 MB. Free memory was 103.8 MB in the beginning and 94.2 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 107.18 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 94.2 MB in the beginning and 181.8 MB in the end (delta: -87.6 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 240.88 ms. Allocated memory is still 203.4 MB. Free memory was 181.8 MB in the beginning and 170.6 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2871.69 ms. Allocated memory was 203.4 MB in the beginning and 243.3 MB in the end (delta: 39.8 MB). Free memory was 169.9 MB in the beginning and 208.1 MB in the end (delta: -38.1 MB). Peak memory consumption was 116.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 48]: 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: 25]: Loop Invariant Derived loop invariant: (!(\old(__return_72) <= 0) || !(0 <= \old(__return_72))) || ((main__j + main__x <= main__i + main__y && main__i + main__y <= main__j + main__x) && __return_72 == \old(__return_72)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 17 locations, 1 error locations. Result: SAFE, OverallTime: 2.7s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 32 SDtfs, 74 SDslu, 90 SDs, 0 SdLazy, 179 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 75 GetRequests, 26 SyntacticMatches, 4 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 9 NumberOfFragments, 54 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 166 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 68 NumberOfCodeBlocks, 68 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 63 ConstructedInterpolants, 0 QuantifiedInterpolants, 4766 SizeOfPredicates, 12 NumberOfNonLiveVariables, 130 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 1/14 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...