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-fea9116 [2019-09-20 12:57:36,811 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 12:57:36,815 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 12:57:36,835 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 12:57:36,835 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 12:57:36,836 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 12:57:36,838 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 12:57:36,840 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 12:57:36,841 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 12:57:36,842 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 12:57:36,843 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 12:57:36,844 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 12:57:36,845 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 12:57:36,846 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 12:57:36,847 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 12:57:36,848 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 12:57:36,849 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 12:57:36,850 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 12:57:36,852 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 12:57:36,853 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 12:57:36,855 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 12:57:36,856 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 12:57:36,857 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 12:57:36,858 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 12:57:36,860 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-20 12:57:36,868 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 12:57:36,869 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 12:57:36,870 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 12:57:36,871 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 [2019-09-20 12:57:36,889 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 12:57:36,889 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 12:57:36,892 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-20 12:57:36,893 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-20 12:57:36,893 INFO L138 SettingsManager]: * Use SBE=true [2019-09-20 12:57:36,894 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 12:57:36,894 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 12:57:36,894 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-20 12:57:36,894 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 12:57:36,895 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 12:57:36,895 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 12:57:36,895 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 12:57:36,895 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 12:57:36,895 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 12:57:36,896 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 12:57:36,896 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-20 12:57:36,896 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 12:57:36,897 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 12:57:36,898 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 12:57:36,898 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-20 12:57:36,898 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-20 12:57:36,898 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 12:57:36,899 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 12:57:36,899 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 12:57:36,899 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-20 12:57:36,899 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-20 12:57:36,900 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 12:57:36,900 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-20 12:57:36,900 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 12:57:36,937 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 12:57:36,949 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 12:57:36,953 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 12:57:36,954 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 12:57:36,955 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 12:57:36,956 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/terminator_02-2.c [2019-09-20 12:57:37,016 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7793b8fe/11eec31181bb421ca5310f722a92738b/FLAGb8e81428e [2019-09-20 12:57:37,438 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 12:57:37,438 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/terminator_02-2.c [2019-09-20 12:57:37,444 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7793b8fe/11eec31181bb421ca5310f722a92738b/FLAGb8e81428e [2019-09-20 12:57:37,783 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7793b8fe/11eec31181bb421ca5310f722a92738b [2019-09-20 12:57:37,797 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 12:57:37,798 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 12:57:37,799 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 12:57:37,799 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 12:57:37,803 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 12:57:37,804 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 12:57:37" (1/1) ... [2019-09-20 12:57:37,808 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@377f0a5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:57:37, skipping insertion in model container [2019-09-20 12:57:37,808 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 12:57:37" (1/1) ... [2019-09-20 12:57:37,817 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 12:57:37,843 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 12:57:38,052 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 12:57:38,059 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 12:57:38,081 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 12:57:38,096 INFO L192 MainTranslator]: Completed translation [2019-09-20 12:57:38,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:57:38 WrapperNode [2019-09-20 12:57:38,096 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 12:57:38,097 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 12:57:38,097 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 12:57:38,098 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 12:57:38,196 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:57:38" (1/1) ... [2019-09-20 12:57:38,197 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:57:38" (1/1) ... [2019-09-20 12:57:38,202 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:57:38" (1/1) ... [2019-09-20 12:57:38,205 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:57:38" (1/1) ... [2019-09-20 12:57:38,210 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:57:38" (1/1) ... [2019-09-20 12:57:38,215 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:57:38" (1/1) ... [2019-09-20 12:57:38,216 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:57:38" (1/1) ... [2019-09-20 12:57:38,218 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 12:57:38,218 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 12:57:38,219 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 12:57:38,219 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 12:57:38,219 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:57:38" (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 [2019-09-20 12:57:38,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 12:57:38,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 12:57:38,277 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-20 12:57:38,277 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 12:57:38,277 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 12:57:38,277 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-20 12:57:38,278 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-20 12:57:38,278 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 12:57:38,278 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-09-20 12:57:38,278 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 12:57:38,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 12:57:38,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 12:57:38,522 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 12:57:38,522 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-20 12:57:38,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 12:57:38 BoogieIcfgContainer [2019-09-20 12:57:38,524 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 12:57:38,527 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 12:57:38,527 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 12:57:38,531 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 12:57:38,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 12:57:37" (1/3) ... [2019-09-20 12:57:38,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@700c2fb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 12:57:38, skipping insertion in model container [2019-09-20 12:57:38,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:57:38" (2/3) ... [2019-09-20 12:57:38,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@700c2fb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 12:57:38, skipping insertion in model container [2019-09-20 12:57:38,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 12:57:38" (3/3) ... [2019-09-20 12:57:38,547 INFO L109 eAbstractionObserver]: Analyzing ICFG terminator_02-2.c [2019-09-20 12:57:38,569 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 12:57:38,583 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 12:57:38,602 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 12:57:38,633 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-20 12:57:38,634 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 12:57:38,634 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-20 12:57:38,635 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 12:57:38,635 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 12:57:38,635 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 12:57:38,635 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 12:57:38,635 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 12:57:38,635 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 12:57:38,650 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-09-20 12:57:38,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-09-20 12:57:38,654 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 12:57:38,655 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 12:57:38,657 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 12:57:38,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 12:57:38,662 INFO L82 PathProgramCache]: Analyzing trace with hash 2111920953, now seen corresponding path program 1 times [2019-09-20 12:57:38,664 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 12:57:38,664 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 12:57:38,708 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:57:38,709 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 12:57:38,709 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:57:38,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 12:57:38,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 12:57:38,776 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 12:57:38,776 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 12:57:38,779 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 12:57:38,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 12:57:38,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 12:57:38,792 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2019-09-20 12:57:38,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 12:57:38,812 INFO L93 Difference]: Finished difference Result 35 states and 43 transitions. [2019-09-20 12:57:38,812 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 12:57:38,813 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2019-09-20 12:57:38,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 12:57:38,820 INFO L225 Difference]: With dead ends: 35 [2019-09-20 12:57:38,820 INFO L226 Difference]: Without dead ends: 16 [2019-09-20 12:57:38,823 INFO L636 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 [2019-09-20 12:57:38,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-09-20 12:57:38,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-09-20 12:57:38,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-09-20 12:57:38,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2019-09-20 12:57:38,860 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 14 [2019-09-20 12:57:38,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 12:57:38,861 INFO L475 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2019-09-20 12:57:38,861 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 12:57:38,861 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2019-09-20 12:57:38,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-09-20 12:57:38,862 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 12:57:38,862 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 12:57:38,863 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 12:57:38,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 12:57:38,863 INFO L82 PathProgramCache]: Analyzing trace with hash 2102685743, now seen corresponding path program 1 times [2019-09-20 12:57:38,863 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 12:57:38,864 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 12:57:38,865 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:57:38,865 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 12:57:38,866 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:57:38,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 12:57:38,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 12:57:38,974 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 12:57:38,974 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-20 12:57:38,975 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 12:57:38,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 12:57:38,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-20 12:57:38,976 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 6 states. [2019-09-20 12:57:39,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 12:57:39,076 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2019-09-20 12:57:39,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 12:57:39,077 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2019-09-20 12:57:39,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 12:57:39,078 INFO L225 Difference]: With dead ends: 22 [2019-09-20 12:57:39,078 INFO L226 Difference]: Without dead ends: 17 [2019-09-20 12:57:39,079 INFO L636 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 [2019-09-20 12:57:39,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-09-20 12:57:39,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-09-20 12:57:39,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-09-20 12:57:39,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2019-09-20 12:57:39,085 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 14 [2019-09-20 12:57:39,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 12:57:39,085 INFO L475 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2019-09-20 12:57:39,085 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 12:57:39,086 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2019-09-20 12:57:39,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-09-20 12:57:39,086 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 12:57:39,087 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 12:57:39,087 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 12:57:39,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 12:57:39,087 INFO L82 PathProgramCache]: Analyzing trace with hash -1145559190, now seen corresponding path program 1 times [2019-09-20 12:57:39,088 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 12:57:39,088 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 12:57:39,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:57:39,090 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 12:57:39,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:57:39,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 12:57:39,154 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-20 12:57:39,155 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 12:57:39,155 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-20 12:57:39,155 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-20 12:57:39,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-20 12:57:39,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-20 12:57:39,156 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 5 states. [2019-09-20 12:57:39,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 12:57:39,197 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2019-09-20 12:57:39,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-20 12:57:39,197 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2019-09-20 12:57:39,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 12:57:39,198 INFO L225 Difference]: With dead ends: 17 [2019-09-20 12:57:39,198 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 12:57:39,199 INFO L636 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 [2019-09-20 12:57:39,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 12:57:39,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 12:57:39,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 12:57:39,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 12:57:39,201 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2019-09-20 12:57:39,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 12:57:39,202 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 12:57:39,202 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-20 12:57:39,203 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 12:57:39,203 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 12:57:39,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-09-20 12:57:39,253 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-09-20 12:57:39,253 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-09-20 12:57:39,253 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-09-20 12:57:39,253 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-09-20 12:57:39,253 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-09-20 12:57:39,253 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-09-20 12:57:39,254 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 13 35) no Hoare annotation was computed. [2019-09-20 12:57:39,254 INFO L443 ceAbstractionStarter]: For program point L19(line 19) no Hoare annotation was computed. [2019-09-20 12:57:39,254 INFO L439 ceAbstractionStarter]: At program point L21-2(lines 21 30) the Hoare annotation is: (or (< 99 main_~x~0) (<= main_~z~0 100)) [2019-09-20 12:57:39,254 INFO L443 ceAbstractionStarter]: For program point L17(line 17) no Hoare annotation was computed. [2019-09-20 12:57:39,254 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 13 35) no Hoare annotation was computed. [2019-09-20 12:57:39,254 INFO L443 ceAbstractionStarter]: For program point L32(line 32) no Hoare annotation was computed. [2019-09-20 12:57:39,254 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 13 35) the Hoare annotation is: true [2019-09-20 12:57:39,255 INFO L443 ceAbstractionStarter]: For program point L24(lines 24 29) no Hoare annotation was computed. [2019-09-20 12:57:39,255 INFO L446 ceAbstractionStarter]: At program point L24-2(lines 21 30) the Hoare annotation is: true [2019-09-20 12:57:39,255 INFO L443 ceAbstractionStarter]: For program point L20(line 20) no Hoare annotation was computed. [2019-09-20 12:57:39,255 INFO L443 ceAbstractionStarter]: For program point L18(line 18) no Hoare annotation was computed. [2019-09-20 12:57:39,255 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 4 9) the Hoare annotation is: true [2019-09-20 12:57:39,255 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 4 9) no Hoare annotation was computed. [2019-09-20 12:57:39,256 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2019-09-20 12:57:39,256 INFO L443 ceAbstractionStarter]: For program point L6(line 6) no Hoare annotation was computed. [2019-09-20 12:57:39,256 INFO L443 ceAbstractionStarter]: For program point L5(lines 5 7) no Hoare annotation was computed. [2019-09-20 12:57:39,256 INFO L443 ceAbstractionStarter]: For program point L5-2(lines 4 9) no Hoare annotation was computed. [2019-09-20 12:57:39,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 12:57:39 BoogieIcfgContainer [2019-09-20 12:57:39,263 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 12:57:39,265 INFO L168 Benchmark]: Toolchain (without parser) took 1466.30 ms. Allocated memory was 131.1 MB in the beginning and 198.7 MB in the end (delta: 67.6 MB). Free memory was 86.9 MB in the beginning and 117.0 MB in the end (delta: -30.1 MB). Peak memory consumption was 37.5 MB. Max. memory is 7.1 GB. [2019-09-20 12:57:39,266 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 131.1 MB. Free memory was 105.4 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. [2019-09-20 12:57:39,267 INFO L168 Benchmark]: CACSL2BoogieTranslator took 297.58 ms. Allocated memory is still 131.1 MB. Free memory was 86.6 MB in the beginning and 77.3 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2019-09-20 12:57:39,269 INFO L168 Benchmark]: Boogie Preprocessor took 120.88 ms. Allocated memory was 131.1 MB in the beginning and 198.7 MB in the end (delta: 67.6 MB). Free memory was 77.3 MB in the beginning and 175.0 MB in the end (delta: -97.7 MB). Peak memory consumption was 16.1 MB. Max. memory is 7.1 GB. [2019-09-20 12:57:39,270 INFO L168 Benchmark]: RCFGBuilder took 306.22 ms. Allocated memory is still 198.7 MB. Free memory was 175.0 MB in the beginning and 162.0 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2019-09-20 12:57:39,271 INFO L168 Benchmark]: TraceAbstraction took 735.98 ms. Allocated memory is still 198.7 MB. Free memory was 161.4 MB in the beginning and 117.0 MB in the end (delta: 44.5 MB). Peak memory consumption was 44.5 MB. Max. memory is 7.1 GB. [2019-09-20 12:57:39,275 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 131.1 MB. Free memory was 105.4 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 297.58 ms. Allocated memory is still 131.1 MB. Free memory was 86.6 MB in the beginning and 77.3 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 120.88 ms. Allocated memory was 131.1 MB in the beginning and 198.7 MB in the end (delta: 67.6 MB). Free memory was 77.3 MB in the beginning and 175.0 MB in the end (delta: -97.7 MB). Peak memory consumption was 16.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 306.22 ms. Allocated memory is still 198.7 MB. Free memory was 175.0 MB in the beginning and 162.0 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 735.98 ms. Allocated memory is still 198.7 MB. Free memory was 161.4 MB in the beginning and 117.0 MB in the end (delta: 44.5 MB). Peak memory consumption was 44.5 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...