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/loops/terminator_02-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-c6af20d [2019-09-03 19:21:10,035 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-03 19:21:10,037 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-03 19:21:10,048 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-03 19:21:10,058 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-03 19:21:10,059 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-03 19:21:10,059 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-03 19:21:10,061 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-03 19:21:10,061 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-03 19:21:10,062 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-03 19:21:10,066 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-03 19:21:10,068 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-03 19:21:10,073 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-03 19:21:10,077 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-03 19:21:10,078 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-03 19:21:10,079 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-03 19:21:10,083 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-03 19:21:10,096 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-03 19:21:10,098 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-03 19:21:10,098 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-03 19:21:10,100 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 [2019-09-03 19:21:10,124 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-03 19:21:10,124 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-03 19:21:10,126 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-03 19:21:10,127 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-03 19:21:10,127 INFO L138 SettingsManager]: * Use SBE=true [2019-09-03 19:21:10,127 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-03 19:21:10,128 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-03 19:21:10,128 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-03 19:21:10,128 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-03 19:21:10,128 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-03 19:21:10,129 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-03 19:21:10,129 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-03 19:21:10,130 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-03 19:21:10,130 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-03 19:21:10,130 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-03 19:21:10,130 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-03 19:21:10,131 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-03 19:21:10,131 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-03 19:21:10,131 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-03 19:21:10,131 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-03 19:21:10,132 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-03 19:21:10,132 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-03 19:21:10,132 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-03 19:21:10,132 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-03 19:21:10,133 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-03 19:21:10,133 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-03 19:21:10,133 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-03 19:21:10,133 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-03 19:21:10,133 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-03 19:21:10,167 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-03 19:21:10,179 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-03 19:21:10,182 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-03 19:21:10,184 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-03 19:21:10,184 INFO L275 PluginConnector]: CDTParser initialized [2019-09-03 19:21:10,185 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/terminator_02-2.c [2019-09-03 19:21:10,262 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/294f50ddb/41d78f0929aa47eb8471289aa811b601/FLAG7af8d3b78 [2019-09-03 19:21:10,707 INFO L306 CDTParser]: Found 1 translation units. [2019-09-03 19:21:10,708 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/terminator_02-2.c [2019-09-03 19:21:10,714 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/294f50ddb/41d78f0929aa47eb8471289aa811b601/FLAG7af8d3b78 [2019-09-03 19:21:11,064 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/294f50ddb/41d78f0929aa47eb8471289aa811b601 [2019-09-03 19:21:11,078 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-03 19:21:11,079 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-03 19:21:11,080 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-03 19:21:11,080 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-03 19:21:11,084 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-03 19:21:11,085 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.09 07:21:11" (1/1) ... [2019-09-03 19:21:11,090 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3540d15a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:21:11, skipping insertion in model container [2019-09-03 19:21:11,090 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.09 07:21:11" (1/1) ... [2019-09-03 19:21:11,098 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-03 19:21:11,115 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-03 19:21:11,363 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-03 19:21:11,367 INFO L188 MainTranslator]: Completed pre-run [2019-09-03 19:21:11,384 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-03 19:21:11,401 INFO L192 MainTranslator]: Completed translation [2019-09-03 19:21:11,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:21:11 WrapperNode [2019-09-03 19:21:11,401 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-03 19:21:11,402 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-03 19:21:11,402 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-03 19:21:11,403 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-03 19:21:11,416 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:21:11" (1/1) ... [2019-09-03 19:21:11,416 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:21:11" (1/1) ... [2019-09-03 19:21:11,503 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:21:11" (1/1) ... [2019-09-03 19:21:11,503 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:21:11" (1/1) ... [2019-09-03 19:21:11,510 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:21:11" (1/1) ... [2019-09-03 19:21:11,516 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:21:11" (1/1) ... [2019-09-03 19:21:11,521 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:21:11" (1/1) ... [2019-09-03 19:21:11,522 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-03 19:21:11,523 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-03 19:21:11,523 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-03 19:21:11,523 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-03 19:21:11,524 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:21:11" (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 [2019-09-03 19:21:11,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-03 19:21:11,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-03 19:21:11,585 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-03 19:21:11,585 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-03 19:21:11,585 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-03 19:21:11,585 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-03 19:21:11,585 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-03 19:21:11,585 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-03 19:21:11,585 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-09-03 19:21:11,585 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-03 19:21:11,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-03 19:21:11,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-03 19:21:11,774 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-03 19:21:11,774 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-03 19:21:11,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.09 07:21:11 BoogieIcfgContainer [2019-09-03 19:21:11,776 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-03 19:21:11,784 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-03 19:21:11,784 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-03 19:21:11,788 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-03 19:21:11,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.09 07:21:11" (1/3) ... [2019-09-03 19:21:11,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74a5cbfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.09 07:21:11, skipping insertion in model container [2019-09-03 19:21:11,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:21:11" (2/3) ... [2019-09-03 19:21:11,798 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74a5cbfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.09 07:21:11, skipping insertion in model container [2019-09-03 19:21:11,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.09 07:21:11" (3/3) ... [2019-09-03 19:21:11,804 INFO L109 eAbstractionObserver]: Analyzing ICFG terminator_02-2.c [2019-09-03 19:21:11,833 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-03 19:21:11,849 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-03 19:21:11,878 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-03 19:21:11,912 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-03 19:21:11,912 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-03 19:21:11,912 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-03 19:21:11,913 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-03 19:21:11,913 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-03 19:21:11,913 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-03 19:21:11,913 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-03 19:21:11,913 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-03 19:21:11,913 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-03 19:21:11,929 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-09-03 19:21:11,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-09-03 19:21:11,934 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 19:21:11,935 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 19:21:11,936 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 19:21:11,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 19:21:11,941 INFO L82 PathProgramCache]: Analyzing trace with hash 2111920953, now seen corresponding path program 1 times [2019-09-03 19:21:11,943 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 19:21:11,943 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 19:21:11,992 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:21:11,993 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 19:21:11,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:21:12,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 19:21:12,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 19:21:12,065 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-03 19:21:12,065 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-03 19:21:12,070 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-03 19:21:12,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-03 19:21:12,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-03 19:21:12,086 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2019-09-03 19:21:12,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 19:21:12,106 INFO L93 Difference]: Finished difference Result 35 states and 43 transitions. [2019-09-03 19:21:12,106 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-03 19:21:12,108 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2019-09-03 19:21:12,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 19:21:12,115 INFO L225 Difference]: With dead ends: 35 [2019-09-03 19:21:12,115 INFO L226 Difference]: Without dead ends: 16 [2019-09-03 19:21:12,119 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-03 19:21:12,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-09-03 19:21:12,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-09-03 19:21:12,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-09-03 19:21:12,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2019-09-03 19:21:12,157 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 14 [2019-09-03 19:21:12,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 19:21:12,157 INFO L475 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2019-09-03 19:21:12,157 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-03 19:21:12,158 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2019-09-03 19:21:12,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-09-03 19:21:12,159 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 19:21:12,159 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 19:21:12,159 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 19:21:12,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 19:21:12,160 INFO L82 PathProgramCache]: Analyzing trace with hash 2102685743, now seen corresponding path program 1 times [2019-09-03 19:21:12,160 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 19:21:12,160 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 19:21:12,162 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:21:12,162 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 19:21:12,162 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:21:12,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 19:21:12,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 19:21:12,271 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-03 19:21:12,271 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-03 19:21:12,272 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-03 19:21:12,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-03 19:21:12,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-03 19:21:12,273 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 6 states. [2019-09-03 19:21:12,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 19:21:12,376 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2019-09-03 19:21:12,377 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-03 19:21:12,377 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2019-09-03 19:21:12,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 19:21:12,378 INFO L225 Difference]: With dead ends: 22 [2019-09-03 19:21:12,379 INFO L226 Difference]: Without dead ends: 17 [2019-09-03 19:21:12,380 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-09-03 19:21:12,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-09-03 19:21:12,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-09-03 19:21:12,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-09-03 19:21:12,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2019-09-03 19:21:12,385 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 14 [2019-09-03 19:21:12,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 19:21:12,386 INFO L475 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2019-09-03 19:21:12,386 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-03 19:21:12,386 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2019-09-03 19:21:12,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-09-03 19:21:12,387 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 19:21:12,387 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 19:21:12,387 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 19:21:12,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 19:21:12,388 INFO L82 PathProgramCache]: Analyzing trace with hash -1145559190, now seen corresponding path program 1 times [2019-09-03 19:21:12,388 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 19:21:12,388 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 19:21:12,389 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:21:12,390 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 19:21:12,390 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:21:12,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 19:21:12,441 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-03 19:21:12,441 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-03 19:21:12,442 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-03 19:21:12,442 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-03 19:21:12,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-03 19:21:12,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-03 19:21:12,443 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 5 states. [2019-09-03 19:21:12,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 19:21:12,477 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2019-09-03 19:21:12,477 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-03 19:21:12,477 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2019-09-03 19:21:12,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 19:21:12,478 INFO L225 Difference]: With dead ends: 17 [2019-09-03 19:21:12,478 INFO L226 Difference]: Without dead ends: 0 [2019-09-03 19:21:12,479 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-03 19:21:12,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-03 19:21:12,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-03 19:21:12,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-03 19:21:12,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-03 19:21:12,480 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2019-09-03 19:21:12,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 19:21:12,481 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-03 19:21:12,481 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-03 19:21:12,481 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-03 19:21:12,481 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-03 19:21:12,486 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-09-03 19:21:12,513 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-09-03 19:21:12,514 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-09-03 19:21:12,514 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-09-03 19:21:12,514 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-09-03 19:21:12,514 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-09-03 19:21:12,514 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-09-03 19:21:12,515 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 13 35) no Hoare annotation was computed. [2019-09-03 19:21:12,515 INFO L443 ceAbstractionStarter]: For program point L19(line 19) no Hoare annotation was computed. [2019-09-03 19:21:12,515 INFO L439 ceAbstractionStarter]: At program point L21-2(lines 21 30) the Hoare annotation is: (or (< 99 main_~x~0) (<= main_~z~0 100)) [2019-09-03 19:21:12,515 INFO L443 ceAbstractionStarter]: For program point L17(line 17) no Hoare annotation was computed. [2019-09-03 19:21:12,515 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 13 35) no Hoare annotation was computed. [2019-09-03 19:21:12,516 INFO L443 ceAbstractionStarter]: For program point L32(line 32) no Hoare annotation was computed. [2019-09-03 19:21:12,516 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 13 35) the Hoare annotation is: true [2019-09-03 19:21:12,516 INFO L443 ceAbstractionStarter]: For program point L24(lines 24 29) no Hoare annotation was computed. [2019-09-03 19:21:12,516 INFO L446 ceAbstractionStarter]: At program point L24-2(lines 21 30) the Hoare annotation is: true [2019-09-03 19:21:12,516 INFO L443 ceAbstractionStarter]: For program point L20(line 20) no Hoare annotation was computed. [2019-09-03 19:21:12,516 INFO L443 ceAbstractionStarter]: For program point L18(line 18) no Hoare annotation was computed. [2019-09-03 19:21:12,517 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 4 9) the Hoare annotation is: true [2019-09-03 19:21:12,517 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2019-09-03 19:21:12,517 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 4 9) no Hoare annotation was computed. [2019-09-03 19:21:12,517 INFO L443 ceAbstractionStarter]: For program point L6(line 6) no Hoare annotation was computed. [2019-09-03 19:21:12,517 INFO L443 ceAbstractionStarter]: For program point L5(lines 5 7) no Hoare annotation was computed. [2019-09-03 19:21:12,518 INFO L443 ceAbstractionStarter]: For program point L5-2(lines 4 9) no Hoare annotation was computed. [2019-09-03 19:21:12,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.09 07:21:12 BoogieIcfgContainer [2019-09-03 19:21:12,525 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-03 19:21:12,528 INFO L168 Benchmark]: Toolchain (without parser) took 1448.01 ms. Allocated memory was 131.1 MB in the beginning and 195.6 MB in the end (delta: 64.5 MB). Free memory was 86.9 MB in the beginning and 115.2 MB in the end (delta: -28.2 MB). Peak memory consumption was 36.2 MB. Max. memory is 7.1 GB. [2019-09-03 19:21:12,529 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 131.1 MB. Free memory was 105.3 MB in the beginning and 105.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-03 19:21:12,530 INFO L168 Benchmark]: CACSL2BoogieTranslator took 321.71 ms. Allocated memory is still 131.1 MB. Free memory was 86.7 MB in the beginning and 77.3 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2019-09-03 19:21:12,531 INFO L168 Benchmark]: Boogie Preprocessor took 120.35 ms. Allocated memory was 131.1 MB in the beginning and 195.6 MB in the end (delta: 64.5 MB). Free memory was 77.3 MB in the beginning and 172.0 MB in the end (delta: -94.7 MB). Peak memory consumption was 16.6 MB. Max. memory is 7.1 GB. [2019-09-03 19:21:12,532 INFO L168 Benchmark]: RCFGBuilder took 253.20 ms. Allocated memory is still 195.6 MB. Free memory was 172.0 MB in the beginning and 159.6 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2019-09-03 19:21:12,533 INFO L168 Benchmark]: TraceAbstraction took 741.74 ms. Allocated memory is still 195.6 MB. Free memory was 158.9 MB in the beginning and 115.2 MB in the end (delta: 43.8 MB). Peak memory consumption was 43.8 MB. Max. memory is 7.1 GB. [2019-09-03 19:21:12,537 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 131.1 MB. Free memory was 105.3 MB in the beginning and 105.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 321.71 ms. Allocated memory is still 131.1 MB. Free memory was 86.7 MB in the beginning and 77.3 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 120.35 ms. Allocated memory was 131.1 MB in the beginning and 195.6 MB in the end (delta: 64.5 MB). Free memory was 77.3 MB in the beginning and 172.0 MB in the end (delta: -94.7 MB). Peak memory consumption was 16.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 253.20 ms. Allocated memory is still 195.6 MB. Free memory was 172.0 MB in the beginning and 159.6 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 741.74 ms. Allocated memory is still 195.6 MB. Free memory was 158.9 MB in the beginning and 115.2 MB in the end (delta: 43.8 MB). Peak memory consumption was 43.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: 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: 21]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 23 locations, 1 error locations. SAFE Result, 0.6s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 54 SDtfs, 5 SDslu, 71 SDs, 0 SdLazy, 40 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred 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, 7 LocationsWithAnnotation, 9 PreInvPairs, 12 NumberOfFragments, 13 HoareAnnotationTreeSize, 9 FomulaSimplifications, 7 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 41 ConstructedInterpolants, 0 QuantifiedInterpolants, 899 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 1/1 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...