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-efa34d5 [2019-09-16 16:12:32,997 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-16 16:12:32,999 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-16 16:12:33,010 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-16 16:12:33,020 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-16 16:12:33,021 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-16 16:12:33,022 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-16 16:12:33,023 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-16 16:12:33,024 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-16 16:12:33,025 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-16 16:12:33,027 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-16 16:12:33,029 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-16 16:12:33,031 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-16 16:12:33,032 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-16 16:12:33,033 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-16 16:12:33,034 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-16 16:12:33,037 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-16 16:12:33,046 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-16 16:12:33,047 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-16 16:12:33,048 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-16 16:12:33,049 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 [2019-09-16 16:12:33,071 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-16 16:12:33,072 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-16 16:12:33,076 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-16 16:12:33,076 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-16 16:12:33,077 INFO L138 SettingsManager]: * Use SBE=true [2019-09-16 16:12:33,077 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-16 16:12:33,077 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-16 16:12:33,077 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-16 16:12:33,077 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-16 16:12:33,078 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-16 16:12:33,078 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-16 16:12:33,078 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-16 16:12:33,078 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-16 16:12:33,078 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-16 16:12:33,079 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-16 16:12:33,079 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-16 16:12:33,079 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-16 16:12:33,079 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-16 16:12:33,079 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-16 16:12:33,080 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-16 16:12:33,080 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-16 16:12:33,081 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-16 16:12:33,081 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-16 16:12:33,081 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-16 16:12:33,081 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-16 16:12:33,082 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-16 16:12:33,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-16 16:12:33,082 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-16 16:12:33,083 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-16 16:12:33,115 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-16 16:12:33,128 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-16 16:12:33,135 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-16 16:12:33,137 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-16 16:12:33,137 INFO L275 PluginConnector]: CDTParser initialized [2019-09-16 16:12:33,138 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/jm2006.c.i.v+cfa-reducer.c [2019-09-16 16:12:33,216 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b11f37744/e9ae33d7da6c431b957635f94735c612/FLAGda2546feb [2019-09-16 16:12:33,665 INFO L306 CDTParser]: Found 1 translation units. [2019-09-16 16:12:33,666 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/jm2006.c.i.v+cfa-reducer.c [2019-09-16 16:12:33,672 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b11f37744/e9ae33d7da6c431b957635f94735c612/FLAGda2546feb [2019-09-16 16:12:34,060 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b11f37744/e9ae33d7da6c431b957635f94735c612 [2019-09-16 16:12:34,071 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-16 16:12:34,073 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-16 16:12:34,074 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-16 16:12:34,074 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-16 16:12:34,077 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-16 16:12:34,078 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 04:12:34" (1/1) ... [2019-09-16 16:12:34,081 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e3363a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:12:34, skipping insertion in model container [2019-09-16 16:12:34,082 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 04:12:34" (1/1) ... [2019-09-16 16:12:34,089 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-16 16:12:34,106 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-16 16:12:34,332 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 16:12:34,337 INFO L188 MainTranslator]: Completed pre-run [2019-09-16 16:12:34,355 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 16:12:34,368 INFO L192 MainTranslator]: Completed translation [2019-09-16 16:12:34,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:12:34 WrapperNode [2019-09-16 16:12:34,369 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-16 16:12:34,369 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-16 16:12:34,369 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-16 16:12:34,369 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-16 16:12:34,478 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:12:34" (1/1) ... [2019-09-16 16:12:34,479 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:12:34" (1/1) ... [2019-09-16 16:12:34,483 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:12:34" (1/1) ... [2019-09-16 16:12:34,484 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:12:34" (1/1) ... [2019-09-16 16:12:34,488 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:12:34" (1/1) ... [2019-09-16 16:12:34,494 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:12:34" (1/1) ... [2019-09-16 16:12:34,495 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:12:34" (1/1) ... [2019-09-16 16:12:34,496 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-16 16:12:34,500 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-16 16:12:34,500 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-16 16:12:34,501 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-16 16:12:34,502 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:12:34" (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 [2019-09-16 16:12:34,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-16 16:12:34,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-16 16:12:34,560 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-16 16:12:34,560 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-16 16:12:34,560 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-16 16:12:34,560 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-16 16:12:34,560 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-16 16:12:34,560 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-16 16:12:34,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-16 16:12:34,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-16 16:12:34,766 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-16 16:12:34,767 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-09-16 16:12:34,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 04:12:34 BoogieIcfgContainer [2019-09-16 16:12:34,770 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-16 16:12:34,772 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-16 16:12:34,772 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-16 16:12:34,780 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-16 16:12:34,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 04:12:34" (1/3) ... [2019-09-16 16:12:34,781 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a66bdd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 04:12:34, skipping insertion in model container [2019-09-16 16:12:34,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:12:34" (2/3) ... [2019-09-16 16:12:34,782 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a66bdd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 04:12:34, skipping insertion in model container [2019-09-16 16:12:34,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 04:12:34" (3/3) ... [2019-09-16 16:12:34,791 INFO L109 eAbstractionObserver]: Analyzing ICFG jm2006.c.i.v+cfa-reducer.c [2019-09-16 16:12:34,804 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-16 16:12:34,813 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-16 16:12:34,829 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-16 16:12:34,866 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-16 16:12:34,867 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-16 16:12:34,867 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-16 16:12:34,867 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-16 16:12:34,867 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-16 16:12:34,868 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-16 16:12:34,868 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-16 16:12:34,868 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-16 16:12:34,868 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-16 16:12:34,886 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2019-09-16 16:12:34,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-09-16 16:12:34,892 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 16:12:34,893 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 16:12:34,895 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 16:12:34,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 16:12:34,901 INFO L82 PathProgramCache]: Analyzing trace with hash -696314067, now seen corresponding path program 1 times [2019-09-16 16:12:34,903 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-16 16:12:34,904 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-16 16:12:34,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:12:34,947 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 16:12:34,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:12:35,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 16:12:35,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 16:12:35,167 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 16:12:35,168 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-16 16:12:35,172 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-16 16:12:35,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-16 16:12:35,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-16 16:12:35,184 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 6 states. [2019-09-16 16:12:35,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 16:12:35,356 INFO L93 Difference]: Finished difference Result 32 states and 38 transitions. [2019-09-16 16:12:35,356 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-16 16:12:35,357 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2019-09-16 16:12:35,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 16:12:35,367 INFO L225 Difference]: With dead ends: 32 [2019-09-16 16:12:35,368 INFO L226 Difference]: Without dead ends: 14 [2019-09-16 16:12:35,371 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2019-09-16 16:12:35,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-09-16 16:12:35,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-09-16 16:12:35,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-09-16 16:12:35,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2019-09-16 16:12:35,410 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2019-09-16 16:12:35,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 16:12:35,411 INFO L475 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2019-09-16 16:12:35,411 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-16 16:12:35,411 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2019-09-16 16:12:35,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-09-16 16:12:35,412 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 16:12:35,412 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 16:12:35,413 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 16:12:35,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 16:12:35,413 INFO L82 PathProgramCache]: Analyzing trace with hash -112838900, now seen corresponding path program 1 times [2019-09-16 16:12:35,413 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-16 16:12:35,414 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-16 16:12:35,415 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:12:35,415 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 16:12:35,416 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:12:35,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 16:12:35,601 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 16:12:35,602 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-16 16:12:35,602 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-16 16:12:35,624 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-16 16:12:35,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 16:12:35,649 INFO L256 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 18 conjunts are in the unsatisfiable core [2019-09-16 16:12:35,655 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-16 16:12:35,729 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-16 16:12:35,749 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 16:12:35,755 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-16 16:12:35,755 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-09-16 16:12:35,756 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-16 16:12:35,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-16 16:12:35,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-09-16 16:12:35,757 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 9 states. [2019-09-16 16:12:35,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 16:12:35,952 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2019-09-16 16:12:35,953 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-16 16:12:35,954 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2019-09-16 16:12:35,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 16:12:35,955 INFO L225 Difference]: With dead ends: 22 [2019-09-16 16:12:35,955 INFO L226 Difference]: Without dead ends: 16 [2019-09-16 16:12:35,957 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2019-09-16 16:12:35,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-09-16 16:12:35,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-09-16 16:12:35,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-09-16 16:12:35,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2019-09-16 16:12:35,966 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 13 [2019-09-16 16:12:35,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 16:12:35,967 INFO L475 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2019-09-16 16:12:35,967 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-16 16:12:35,967 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2019-09-16 16:12:35,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-09-16 16:12:35,968 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 16:12:35,968 INFO L407 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 16:12:35,969 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 16:12:35,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 16:12:35,970 INFO L82 PathProgramCache]: Analyzing trace with hash -1126058196, now seen corresponding path program 2 times [2019-09-16 16:12:35,971 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-16 16:12:35,971 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-16 16:12:35,975 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:12:35,976 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 16:12:35,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:12:36,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 16:12:36,192 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-16 16:12:36,192 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-16 16:12:36,192 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-16 16:12:36,211 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-09-16 16:12:36,228 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-09-16 16:12:36,228 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-16 16:12:36,230 INFO L256 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 27 conjunts are in the unsatisfiable core [2019-09-16 16:12:36,231 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-16 16:12:36,321 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-16 16:12:36,342 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 16:12:36,345 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-16 16:12:36,346 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 12 [2019-09-16 16:12:36,346 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-09-16 16:12:36,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-09-16 16:12:36,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2019-09-16 16:12:36,348 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 12 states. [2019-09-16 16:12:36,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 16:12:36,535 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2019-09-16 16:12:36,536 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-09-16 16:12:36,536 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2019-09-16 16:12:36,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 16:12:36,536 INFO L225 Difference]: With dead ends: 19 [2019-09-16 16:12:36,536 INFO L226 Difference]: Without dead ends: 0 [2019-09-16 16:12:36,537 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2019-09-16 16:12:36,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-16 16:12:36,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-16 16:12:36,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-16 16:12:36,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-16 16:12:36,538 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2019-09-16 16:12:36,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 16:12:36,539 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-16 16:12:36,539 INFO L476 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-09-16 16:12:36,539 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-16 16:12:36,539 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-16 16:12:36,544 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-09-16 16:12:36,641 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-09-16 16:12:36,641 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-09-16 16:12:36,642 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-09-16 16:12:36,642 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-09-16 16:12:36,642 INFO L439 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: (and (<= 0 ~__return_72~0) (<= ~__return_72~0 0)) [2019-09-16 16:12:36,642 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-09-16 16:12:36,642 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-09-16 16:12:36,643 INFO L439 ceAbstractionStarter]: At program point mainENTRY(lines 8 65) the Hoare annotation is: (or (not (<= |old(~__return_72~0)| 0)) (not (<= 0 |old(~__return_72~0)|)) (and (<= 0 ~__return_72~0) (<= ~__return_72~0 0))) [2019-09-16 16:12:36,643 INFO L443 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 48) no Hoare annotation was computed. [2019-09-16 16:12:36,643 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 8 65) no Hoare annotation was computed. [2019-09-16 16:12:36,643 INFO L443 ceAbstractionStarter]: For program point L20(lines 20 63) no Hoare annotation was computed. [2019-09-16 16:12:36,643 INFO L443 ceAbstractionStarter]: For program point L48(line 48) no Hoare annotation was computed. [2019-09-16 16:12:36,643 INFO L443 ceAbstractionStarter]: For program point L14(lines 14 64) no Hoare annotation was computed. [2019-09-16 16:12:36,644 INFO L443 ceAbstractionStarter]: For program point L46(lines 46 55) no Hoare annotation was computed. [2019-09-16 16:12:36,644 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 8 65) no Hoare annotation was computed. [2019-09-16 16:12:36,644 INFO L443 ceAbstractionStarter]: For program point L39(lines 39 61) no Hoare annotation was computed. [2019-09-16 16:12:36,645 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) (<= 0 ~__return_72~0) (<= .cse1 .cse0) (<= ~__return_72~0 0)))) [2019-09-16 16:12:36,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 04:12:36 BoogieIcfgContainer [2019-09-16 16:12:36,664 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-16 16:12:36,668 INFO L168 Benchmark]: Toolchain (without parser) took 2593.65 ms. Allocated memory was 137.4 MB in the beginning and 217.6 MB in the end (delta: 80.2 MB). Free memory was 84.7 MB in the beginning and 128.2 MB in the end (delta: -43.5 MB). Peak memory consumption was 36.7 MB. Max. memory is 7.1 GB. [2019-09-16 16:12:36,670 INFO L168 Benchmark]: CDTParser took 0.46 ms. Allocated memory is still 137.4 MB. Free memory was 103.3 MB in the beginning and 103.1 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2019-09-16 16:12:36,671 INFO L168 Benchmark]: CACSL2BoogieTranslator took 295.16 ms. Allocated memory is still 137.4 MB. Free memory was 84.5 MB in the beginning and 74.9 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2019-09-16 16:12:36,673 INFO L168 Benchmark]: Boogie Preprocessor took 127.14 ms. Allocated memory was 137.4 MB in the beginning and 197.7 MB in the end (delta: 60.3 MB). Free memory was 74.9 MB in the beginning and 175.4 MB in the end (delta: -100.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. [2019-09-16 16:12:36,674 INFO L168 Benchmark]: RCFGBuilder took 269.48 ms. Allocated memory is still 197.7 MB. Free memory was 175.0 MB in the beginning and 162.9 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. [2019-09-16 16:12:36,676 INFO L168 Benchmark]: TraceAbstraction took 1893.06 ms. Allocated memory was 197.7 MB in the beginning and 217.6 MB in the end (delta: 19.9 MB). Free memory was 162.9 MB in the beginning and 128.2 MB in the end (delta: 34.7 MB). Peak memory consumption was 54.7 MB. Max. memory is 7.1 GB. [2019-09-16 16:12:36,685 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.46 ms. Allocated memory is still 137.4 MB. Free memory was 103.3 MB in the beginning and 103.1 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 295.16 ms. Allocated memory is still 137.4 MB. Free memory was 84.5 MB in the beginning and 74.9 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 127.14 ms. Allocated memory was 137.4 MB in the beginning and 197.7 MB in the end (delta: 60.3 MB). Free memory was 74.9 MB in the beginning and 175.4 MB in the end (delta: -100.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 269.48 ms. Allocated memory is still 197.7 MB. Free memory was 175.0 MB in the beginning and 162.9 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1893.06 ms. Allocated memory was 197.7 MB in the beginning and 217.6 MB in the end (delta: 19.9 MB). Free memory was 162.9 MB in the beginning and 128.2 MB in the end (delta: 34.7 MB). Peak memory consumption was 54.7 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 && 0 <= __return_72) && main__i + main__y <= main__j + main__x) && __return_72 <= 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 17 locations, 1 error locations. SAFE Result, 1.7s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 37 SDtfs, 40 SDslu, 136 SDs, 0 SdLazy, 126 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 23 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.7s 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 AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 9 NumberOfFragments, 55 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 123 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 68 NumberOfCodeBlocks, 68 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 63 ConstructedInterpolants, 0 QuantifiedInterpolants, 4544 SizeOfPredicates, 12 NumberOfNonLiveVariables, 130 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 1/14 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...