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-acceleration/underapprox_2-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-c6af20d [2019-09-03 19:44:07,037 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-03 19:44:07,039 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-03 19:44:07,057 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-03 19:44:07,058 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-03 19:44:07,059 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-03 19:44:07,062 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-03 19:44:07,071 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-03 19:44:07,072 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-03 19:44:07,075 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-03 19:44:07,078 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-03 19:44:07,079 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-03 19:44:07,080 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-03 19:44:07,083 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-03 19:44:07,083 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-03 19:44:07,084 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-03 19:44:07,087 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-03 19:44:07,088 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-03 19:44:07,092 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-03 19:44:07,094 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-03 19:44:07,097 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-03 19:44:07,098 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-03 19:44:07,099 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-03 19:44:07,100 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-03 19:44:07,103 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-03 19:44:07,109 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-03 19:44:07,110 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-03 19:44:07,113 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-03 19:44:07,113 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-03 19:44:07,117 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-03 19:44:07,117 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-03 19:44:07,117 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-03 19:44:07,118 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-03 19:44:07,118 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-03 19:44:07,121 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-03 19:44:07,122 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-03 19:44:07,122 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 19:44:07,149 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-03 19:44:07,149 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-03 19:44:07,151 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-03 19:44:07,151 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-03 19:44:07,151 INFO L138 SettingsManager]: * Use SBE=true [2019-09-03 19:44:07,152 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-03 19:44:07,152 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-03 19:44:07,152 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-03 19:44:07,153 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-03 19:44:07,153 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-03 19:44:07,154 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-03 19:44:07,154 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-03 19:44:07,154 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-03 19:44:07,155 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-03 19:44:07,155 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-03 19:44:07,155 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-03 19:44:07,155 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-03 19:44:07,155 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-03 19:44:07,156 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-03 19:44:07,156 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-03 19:44:07,156 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-03 19:44:07,156 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-03 19:44:07,157 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-03 19:44:07,157 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-03 19:44:07,157 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-03 19:44:07,157 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-03 19:44:07,157 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-03 19:44:07,158 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-03 19:44:07,158 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-03 19:44:07,201 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-03 19:44:07,211 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-03 19:44:07,214 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-03 19:44:07,216 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-03 19:44:07,216 INFO L275 PluginConnector]: CDTParser initialized [2019-09-03 19:44:07,217 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/underapprox_2-2.c [2019-09-03 19:44:07,270 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d03a69fe/125c2cf52a39415d99dff3e89605043f/FLAG8e9feb15b [2019-09-03 19:44:07,677 INFO L306 CDTParser]: Found 1 translation units. [2019-09-03 19:44:07,678 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/underapprox_2-2.c [2019-09-03 19:44:07,684 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d03a69fe/125c2cf52a39415d99dff3e89605043f/FLAG8e9feb15b [2019-09-03 19:44:08,111 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d03a69fe/125c2cf52a39415d99dff3e89605043f [2019-09-03 19:44:08,124 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-03 19:44:08,125 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-03 19:44:08,126 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-03 19:44:08,126 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-03 19:44:08,130 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-03 19:44:08,131 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.09 07:44:08" (1/1) ... [2019-09-03 19:44:08,133 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23f769f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:44:08, skipping insertion in model container [2019-09-03 19:44:08,134 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.09 07:44:08" (1/1) ... [2019-09-03 19:44:08,141 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-03 19:44:08,159 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-03 19:44:08,334 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-03 19:44:08,338 INFO L188 MainTranslator]: Completed pre-run [2019-09-03 19:44:08,354 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-03 19:44:08,368 INFO L192 MainTranslator]: Completed translation [2019-09-03 19:44:08,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:44:08 WrapperNode [2019-09-03 19:44:08,369 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-03 19:44:08,370 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-03 19:44:08,370 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-03 19:44:08,370 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-03 19:44:08,476 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:44:08" (1/1) ... [2019-09-03 19:44:08,477 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:44:08" (1/1) ... [2019-09-03 19:44:08,481 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:44:08" (1/1) ... [2019-09-03 19:44:08,482 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:44:08" (1/1) ... [2019-09-03 19:44:08,485 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:44:08" (1/1) ... [2019-09-03 19:44:08,489 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:44:08" (1/1) ... [2019-09-03 19:44:08,490 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:44:08" (1/1) ... [2019-09-03 19:44:08,491 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-03 19:44:08,492 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-03 19:44:08,492 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-03 19:44:08,492 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-03 19:44:08,493 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:44:08" (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 19:44:08,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-03 19:44:08,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-03 19:44:08,545 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-03 19:44:08,545 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-03 19:44:08,545 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-03 19:44:08,546 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-03 19:44:08,546 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-03 19:44:08,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-03 19:44:08,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-03 19:44:08,708 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-03 19:44:08,708 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-03 19:44:08,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.09 07:44:08 BoogieIcfgContainer [2019-09-03 19:44:08,709 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-03 19:44:08,710 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-03 19:44:08,710 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-03 19:44:08,713 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-03 19:44:08,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.09 07:44:08" (1/3) ... [2019-09-03 19:44:08,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a2063bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.09 07:44:08, skipping insertion in model container [2019-09-03 19:44:08,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:44:08" (2/3) ... [2019-09-03 19:44:08,715 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a2063bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.09 07:44:08, skipping insertion in model container [2019-09-03 19:44:08,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.09 07:44:08" (3/3) ... [2019-09-03 19:44:08,717 INFO L109 eAbstractionObserver]: Analyzing ICFG underapprox_2-2.c [2019-09-03 19:44:08,725 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-03 19:44:08,732 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-03 19:44:08,748 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-03 19:44:08,774 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-03 19:44:08,775 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-03 19:44:08,775 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-03 19:44:08,775 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-03 19:44:08,776 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-03 19:44:08,776 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-03 19:44:08,776 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-03 19:44:08,776 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-03 19:44:08,776 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-03 19:44:08,791 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2019-09-03 19:44:08,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-09-03 19:44:08,795 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 19:44:08,796 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 19:44:08,798 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 19:44:08,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 19:44:08,802 INFO L82 PathProgramCache]: Analyzing trace with hash 1846144830, now seen corresponding path program 1 times [2019-09-03 19:44:08,803 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 19:44:08,803 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 19:44:08,840 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:44:08,841 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 19:44:08,841 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:44:08,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 19:44:09,006 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 19:44:09,010 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-03 19:44:09,018 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-03 19:44:09,029 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-03 19:44:09,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-03 19:44:09,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-03 19:44:09,050 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 3 states. [2019-09-03 19:44:09,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 19:44:09,089 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2019-09-03 19:44:09,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-03 19:44:09,091 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-09-03 19:44:09,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 19:44:09,099 INFO L225 Difference]: With dead ends: 29 [2019-09-03 19:44:09,099 INFO L226 Difference]: Without dead ends: 12 [2019-09-03 19:44:09,103 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-03 19:44:09,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-09-03 19:44:09,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-09-03 19:44:09,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-09-03 19:44:09,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2019-09-03 19:44:09,146 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2019-09-03 19:44:09,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 19:44:09,146 INFO L475 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2019-09-03 19:44:09,147 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-03 19:44:09,147 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2019-09-03 19:44:09,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-09-03 19:44:09,147 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 19:44:09,148 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 19:44:09,148 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 19:44:09,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 19:44:09,148 INFO L82 PathProgramCache]: Analyzing trace with hash 1432376145, now seen corresponding path program 1 times [2019-09-03 19:44:09,149 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 19:44:09,149 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 19:44:09,150 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:44:09,150 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 19:44:09,150 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:44:09,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 19:44:09,243 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 19:44:09,243 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-03 19:44:09,244 INFO L223 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) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-03 19:44:09,270 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 19:44:09,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 19:44:09,291 INFO L256 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 11 conjunts are in the unsatisfiable core [2019-09-03 19:44:09,296 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-03 19:44:09,348 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 19:44:09,352 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-03 19:44:09,352 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2019-09-03 19:44:09,353 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-03 19:44:09,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-03 19:44:09,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-03 19:44:09,354 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 5 states. [2019-09-03 19:44:09,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 19:44:09,375 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2019-09-03 19:44:09,376 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-03 19:44:09,376 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-09-03 19:44:09,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 19:44:09,378 INFO L225 Difference]: With dead ends: 18 [2019-09-03 19:44:09,378 INFO L226 Difference]: Without dead ends: 13 [2019-09-03 19:44:09,379 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-03 19:44:09,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-09-03 19:44:09,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-09-03 19:44:09,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-09-03 19:44:09,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2019-09-03 19:44:09,391 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2019-09-03 19:44:09,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 19:44:09,392 INFO L475 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2019-09-03 19:44:09,392 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-03 19:44:09,392 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2019-09-03 19:44:09,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-09-03 19:44:09,393 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 19:44:09,393 INFO L399 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 19:44:09,394 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 19:44:09,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 19:44:09,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1490448798, now seen corresponding path program 2 times [2019-09-03 19:44:09,395 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 19:44:09,396 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 19:44:09,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:44:09,398 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 19:44:09,399 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:44:09,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 19:44:09,525 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 19:44:09,526 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-03 19:44:09,526 INFO L223 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 [2019-09-03 19:44:09,541 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-09-03 19:44:09,559 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-09-03 19:44:09,559 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-03 19:44:09,561 INFO L256 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 13 conjunts are in the unsatisfiable core [2019-09-03 19:44:09,562 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-03 19:44:09,592 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 19:44:09,597 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-03 19:44:09,598 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2019-09-03 19:44:09,598 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-03 19:44:09,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-03 19:44:09,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-03 19:44:09,599 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 6 states. [2019-09-03 19:44:09,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 19:44:09,632 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2019-09-03 19:44:09,632 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-03 19:44:09,633 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2019-09-03 19:44:09,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 19:44:09,633 INFO L225 Difference]: With dead ends: 19 [2019-09-03 19:44:09,633 INFO L226 Difference]: Without dead ends: 14 [2019-09-03 19:44:09,637 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-03 19:44:09,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-09-03 19:44:09,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-09-03 19:44:09,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-09-03 19:44:09,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2019-09-03 19:44:09,642 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2019-09-03 19:44:09,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 19:44:09,642 INFO L475 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2019-09-03 19:44:09,642 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-03 19:44:09,643 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2019-09-03 19:44:09,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-09-03 19:44:09,643 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 19:44:09,643 INFO L399 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 19:44:09,644 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 19:44:09,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 19:44:09,644 INFO L82 PathProgramCache]: Analyzing trace with hash -1004266255, now seen corresponding path program 3 times [2019-09-03 19:44:09,644 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 19:44:09,644 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 19:44:09,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:44:09,647 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-03 19:44:09,647 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:44:09,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 19:44:09,744 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 19:44:09,745 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-03 19:44:09,745 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-03 19:44:09,771 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-09-03 19:44:09,782 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-09-03 19:44:09,782 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-03 19:44:09,783 INFO L256 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 10 conjunts are in the unsatisfiable core [2019-09-03 19:44:09,785 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-03 19:44:09,843 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 19:44:09,888 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-03 19:44:09,892 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-03 19:44:09,893 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2019-09-03 19:44:09,893 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-03 19:44:09,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-03 19:44:09,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-09-03 19:44:09,895 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 10 states. [2019-09-03 19:44:09,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 19:44:09,978 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2019-09-03 19:44:09,978 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-03 19:44:09,978 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2019-09-03 19:44:09,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 19:44:09,979 INFO L225 Difference]: With dead ends: 18 [2019-09-03 19:44:09,979 INFO L226 Difference]: Without dead ends: 0 [2019-09-03 19:44:09,980 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2019-09-03 19:44:09,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-03 19:44:09,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-03 19:44:09,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-03 19:44:09,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-03 19:44:09,982 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2019-09-03 19:44:09,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 19:44:09,982 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-03 19:44:09,982 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-09-03 19:44:09,982 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-03 19:44:09,982 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-03 19:44:09,986 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-09-03 19:44:10,063 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-09-03 19:44:10,064 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-09-03 19:44:10,064 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-09-03 19:44:10,064 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-09-03 19:44:10,064 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-09-03 19:44:10,064 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-09-03 19:44:10,065 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 10 20) the Hoare annotation is: true [2019-09-03 19:44:10,065 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 10 20) no Hoare annotation was computed. [2019-09-03 19:44:10,065 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 10 20) no Hoare annotation was computed. [2019-09-03 19:44:10,065 INFO L439 ceAbstractionStarter]: At program point L14-2(lines 14 17) the Hoare annotation is: (or (and (<= main_~x~0 0) (<= 0 main_~x~0)) (< (mod (+ main_~x~0 4294967295) 4294967296) 6)) [2019-09-03 19:44:10,065 INFO L439 ceAbstractionStarter]: At program point L14-3(lines 14 17) the Hoare annotation is: (and (< (mod (+ main_~x~0 4294967295) 4294967296) 6) (<= 6 (mod main_~x~0 4294967296))) [2019-09-03 19:44:10,066 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2019-09-03 19:44:10,066 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2019-09-03 19:44:10,066 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-09-03 19:44:10,067 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-09-03 19:44:10,067 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-09-03 19:44:10,067 INFO L443 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2019-09-03 19:44:10,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.09 07:44:10 BoogieIcfgContainer [2019-09-03 19:44:10,085 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-03 19:44:10,088 INFO L168 Benchmark]: Toolchain (without parser) took 1961.20 ms. Allocated memory was 132.6 MB in the beginning and 199.8 MB in the end (delta: 67.1 MB). Free memory was 87.8 MB in the beginning and 80.2 MB in the end (delta: 7.7 MB). Peak memory consumption was 74.8 MB. Max. memory is 7.1 GB. [2019-09-03 19:44:10,090 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 132.6 MB. Free memory was 105.6 MB in the beginning and 105.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-03 19:44:10,091 INFO L168 Benchmark]: CACSL2BoogieTranslator took 243.10 ms. Allocated memory is still 132.6 MB. Free memory was 87.4 MB in the beginning and 78.5 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 7.1 GB. [2019-09-03 19:44:10,092 INFO L168 Benchmark]: Boogie Preprocessor took 121.64 ms. Allocated memory was 132.6 MB in the beginning and 199.8 MB in the end (delta: 67.1 MB). Free memory was 78.5 MB in the beginning and 176.7 MB in the end (delta: -98.2 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. [2019-09-03 19:44:10,093 INFO L168 Benchmark]: RCFGBuilder took 217.86 ms. Allocated memory is still 199.8 MB. Free memory was 176.7 MB in the beginning and 165.9 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. [2019-09-03 19:44:10,094 INFO L168 Benchmark]: TraceAbstraction took 1374.43 ms. Allocated memory is still 199.8 MB. Free memory was 165.9 MB in the beginning and 80.2 MB in the end (delta: 85.7 MB). Peak memory consumption was 85.7 MB. Max. memory is 7.1 GB. [2019-09-03 19:44:10,098 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 132.6 MB. Free memory was 105.6 MB in the beginning and 105.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 243.10 ms. Allocated memory is still 132.6 MB. Free memory was 87.4 MB in the beginning and 78.5 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 121.64 ms. Allocated memory was 132.6 MB in the beginning and 199.8 MB in the end (delta: 67.1 MB). Free memory was 78.5 MB in the beginning and 176.7 MB in the end (delta: -98.2 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 217.86 ms. Allocated memory is still 199.8 MB. Free memory was 176.7 MB in the beginning and 165.9 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1374.43 ms. Allocated memory is still 199.8 MB. Free memory was 165.9 MB in the beginning and 80.2 MB in the end (delta: 85.7 MB). Peak memory consumption was 85.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: 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: 14]: Loop Invariant Derived loop invariant: (x <= 0 && 0 <= x) || (x + 4294967295) % 4294967296 < 6 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 17 locations, 1 error locations. SAFE Result, 1.3s OverallTime, 4 OverallIterations, 3 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 42 SDtfs, 2 SDslu, 88 SDs, 0 SdLazy, 60 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 57 GetRequests, 31 SyntacticMatches, 8 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 11 PreInvPairs, 16 NumberOfFragments, 33 HoareAnnotationTreeSize, 11 FomulaSimplifications, 18 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 14 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 82 NumberOfCodeBlocks, 81 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 75 ConstructedInterpolants, 0 QuantifiedInterpolants, 2185 SizeOfPredicates, 2 NumberOfNonLiveVariables, 97 ConjunctsInSsa, 34 ConjunctsInUnsatCore, 7 InterpolantComputations, 2 PerfectInterpolantSequences, 6/20 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...