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/while_infinite_loop_2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-c6af20d [2019-09-03 19:24:00,239 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-03 19:24:00,242 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-03 19:24:00,259 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-03 19:24:00,284 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-03 19:24:00,285 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-03 19:24:00,288 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-03 19:24:00,289 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-03 19:24:00,291 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-03 19:24:00,292 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-03 19:24:00,294 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-03 19:24:00,299 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-03 19:24:00,303 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-03 19:24:00,306 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-03 19:24:00,309 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-03 19:24:00,310 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-03 19:24:00,313 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-03 19:24:00,325 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-03 19:24:00,326 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-03 19:24:00,326 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-03 19:24:00,328 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 19:24:00,360 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-03 19:24:00,360 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-03 19:24:00,362 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-03 19:24:00,362 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-03 19:24:00,362 INFO L138 SettingsManager]: * Use SBE=true [2019-09-03 19:24:00,362 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-03 19:24:00,363 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-03 19:24:00,363 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-03 19:24:00,363 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-03 19:24:00,363 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-03 19:24:00,363 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-03 19:24:00,364 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-03 19:24:00,364 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-03 19:24:00,364 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-03 19:24:00,364 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-03 19:24:00,364 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-03 19:24:00,365 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-03 19:24:00,365 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-03 19:24:00,365 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-03 19:24:00,365 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-03 19:24:00,365 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-03 19:24:00,366 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-03 19:24:00,366 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-03 19:24:00,366 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-03 19:24:00,366 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-03 19:24:00,366 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-03 19:24:00,367 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-03 19:24:00,367 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-03 19:24:00,367 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-03 19:24:00,397 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-03 19:24:00,409 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-03 19:24:00,412 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-03 19:24:00,414 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-03 19:24:00,414 INFO L275 PluginConnector]: CDTParser initialized [2019-09-03 19:24:00,415 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/while_infinite_loop_2.c [2019-09-03 19:24:00,475 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f480a95a/edd442dc67b34dda8629cd5bc7ed9a34/FLAG98df40a33 [2019-09-03 19:24:00,897 INFO L306 CDTParser]: Found 1 translation units. [2019-09-03 19:24:00,898 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/while_infinite_loop_2.c [2019-09-03 19:24:00,904 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f480a95a/edd442dc67b34dda8629cd5bc7ed9a34/FLAG98df40a33 [2019-09-03 19:24:01,304 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f480a95a/edd442dc67b34dda8629cd5bc7ed9a34 [2019-09-03 19:24:01,314 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-03 19:24:01,315 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-03 19:24:01,316 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-03 19:24:01,316 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-03 19:24:01,320 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-03 19:24:01,321 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.09 07:24:01" (1/1) ... [2019-09-03 19:24:01,323 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2beb435c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:24:01, skipping insertion in model container [2019-09-03 19:24:01,324 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.09 07:24:01" (1/1) ... [2019-09-03 19:24:01,331 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-03 19:24:01,345 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-03 19:24:01,501 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-03 19:24:01,512 INFO L188 MainTranslator]: Completed pre-run [2019-09-03 19:24:01,526 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-03 19:24:01,540 INFO L192 MainTranslator]: Completed translation [2019-09-03 19:24:01,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:24:01 WrapperNode [2019-09-03 19:24:01,541 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-03 19:24:01,542 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-03 19:24:01,542 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-03 19:24:01,542 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-03 19:24:01,639 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:24:01" (1/1) ... [2019-09-03 19:24:01,639 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:24:01" (1/1) ... [2019-09-03 19:24:01,644 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:24:01" (1/1) ... [2019-09-03 19:24:01,644 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:24:01" (1/1) ... [2019-09-03 19:24:01,647 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:24:01" (1/1) ... [2019-09-03 19:24:01,651 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:24:01" (1/1) ... [2019-09-03 19:24:01,652 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:24:01" (1/1) ... [2019-09-03 19:24:01,653 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-03 19:24:01,653 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-03 19:24:01,653 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-03 19:24:01,654 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-03 19:24:01,654 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:24:01" (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 19:24:01,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-03 19:24:01,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-03 19:24:01,711 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-03 19:24:01,711 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-03 19:24:01,711 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-03 19:24:01,711 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-03 19:24:01,711 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-03 19:24:01,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-03 19:24:01,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-03 19:24:01,838 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-03 19:24:01,838 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-03 19:24:01,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.09 07:24:01 BoogieIcfgContainer [2019-09-03 19:24:01,839 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-03 19:24:01,840 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-03 19:24:01,841 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-03 19:24:01,844 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-03 19:24:01,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.09 07:24:01" (1/3) ... [2019-09-03 19:24:01,845 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b69022f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.09 07:24:01, skipping insertion in model container [2019-09-03 19:24:01,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:24:01" (2/3) ... [2019-09-03 19:24:01,845 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b69022f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.09 07:24:01, skipping insertion in model container [2019-09-03 19:24:01,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.09 07:24:01" (3/3) ... [2019-09-03 19:24:01,847 INFO L109 eAbstractionObserver]: Analyzing ICFG while_infinite_loop_2.c [2019-09-03 19:24:01,857 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-03 19:24:01,862 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-03 19:24:01,879 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-03 19:24:01,906 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-03 19:24:01,906 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-03 19:24:01,906 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-03 19:24:01,907 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-03 19:24:01,907 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-03 19:24:01,907 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-03 19:24:01,907 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-03 19:24:01,907 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-03 19:24:01,908 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-03 19:24:01,923 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2019-09-03 19:24:01,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-09-03 19:24:01,928 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 19:24:01,929 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 19:24:01,931 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 19:24:01,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 19:24:01,937 INFO L82 PathProgramCache]: Analyzing trace with hash -10313984, now seen corresponding path program 1 times [2019-09-03 19:24:01,939 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 19:24:01,939 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 19:24:01,977 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:24:01,977 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 19:24:01,978 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:24:01,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 19:24:02,022 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 19:24:02,024 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-03 19:24:02,024 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-03 19:24:02,028 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-03 19:24:02,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-03 19:24:02,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-03 19:24:02,040 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2019-09-03 19:24:02,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 19:24:02,062 INFO L93 Difference]: Finished difference Result 26 states and 33 transitions. [2019-09-03 19:24:02,062 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-03 19:24:02,063 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-09-03 19:24:02,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 19:24:02,070 INFO L225 Difference]: With dead ends: 26 [2019-09-03 19:24:02,070 INFO L226 Difference]: Without dead ends: 13 [2019-09-03 19:24:02,073 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 19:24:02,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-09-03 19:24:02,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-09-03 19:24:02,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-09-03 19:24:02,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2019-09-03 19:24:02,106 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2019-09-03 19:24:02,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 19:24:02,107 INFO L475 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2019-09-03 19:24:02,107 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-03 19:24:02,107 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2019-09-03 19:24:02,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-09-03 19:24:02,108 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 19:24:02,108 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 19:24:02,109 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 19:24:02,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 19:24:02,109 INFO L82 PathProgramCache]: Analyzing trace with hash -13144129, now seen corresponding path program 1 times [2019-09-03 19:24:02,109 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 19:24:02,109 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 19:24:02,111 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:24:02,111 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 19:24:02,111 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:24:02,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 19:24:02,216 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 19:24:02,216 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-03 19:24:02,217 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-03 19:24:02,224 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-03 19:24:02,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-03 19:24:02,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-03 19:24:02,227 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 5 states. [2019-09-03 19:24:02,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 19:24:02,316 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2019-09-03 19:24:02,319 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-03 19:24:02,319 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-09-03 19:24:02,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 19:24:02,320 INFO L225 Difference]: With dead ends: 13 [2019-09-03 19:24:02,320 INFO L226 Difference]: Without dead ends: 0 [2019-09-03 19:24:02,321 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-03 19:24:02,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-03 19:24:02,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-03 19:24:02,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-03 19:24:02,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-03 19:24:02,326 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2019-09-03 19:24:02,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 19:24:02,327 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-03 19:24:02,327 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-03 19:24:02,327 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-03 19:24:02,327 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-03 19:24:02,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-09-03 19:24:02,375 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-09-03 19:24:02,375 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-09-03 19:24:02,375 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-09-03 19:24:02,375 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-09-03 19:24:02,376 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-09-03 19:24:02,376 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-09-03 19:24:02,376 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 9 18) the Hoare annotation is: true [2019-09-03 19:24:02,376 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 9 18) no Hoare annotation was computed. [2019-09-03 19:24:02,377 INFO L439 ceAbstractionStarter]: At program point L14(line 14) the Hoare annotation is: (= main_~x~0 0) [2019-09-03 19:24:02,377 INFO L439 ceAbstractionStarter]: At program point L14-1(lines 12 15) the Hoare annotation is: (= main_~x~0 0) [2019-09-03 19:24:02,377 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 9 18) no Hoare annotation was computed. [2019-09-03 19:24:02,377 INFO L439 ceAbstractionStarter]: At program point L12-2(lines 12 15) the Hoare annotation is: false [2019-09-03 19:24:02,377 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2019-09-03 19:24:02,378 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2019-09-03 19:24:02,378 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-09-03 19:24:02,378 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-09-03 19:24:02,378 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-09-03 19:24:02,378 INFO L443 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2019-09-03 19:24:02,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.09 07:24:02 BoogieIcfgContainer [2019-09-03 19:24:02,391 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-03 19:24:02,394 INFO L168 Benchmark]: Toolchain (without parser) took 1077.84 ms. Allocated memory was 141.6 MB in the beginning and 200.3 MB in the end (delta: 58.7 MB). Free memory was 89.4 MB in the beginning and 138.4 MB in the end (delta: -49.0 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2019-09-03 19:24:02,395 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 141.6 MB. Free memory is still 107.3 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-09-03 19:24:02,396 INFO L168 Benchmark]: CACSL2BoogieTranslator took 224.92 ms. Allocated memory is still 141.6 MB. Free memory was 89.0 MB in the beginning and 80.1 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.9 MB. Max. memory is 7.1 GB. [2019-09-03 19:24:02,397 INFO L168 Benchmark]: Boogie Preprocessor took 111.47 ms. Allocated memory was 141.6 MB in the beginning and 200.3 MB in the end (delta: 58.7 MB). Free memory was 80.1 MB in the beginning and 177.9 MB in the end (delta: -97.8 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. [2019-09-03 19:24:02,398 INFO L168 Benchmark]: RCFGBuilder took 186.36 ms. Allocated memory is still 200.3 MB. Free memory was 177.9 MB in the beginning and 168.0 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2019-09-03 19:24:02,399 INFO L168 Benchmark]: TraceAbstraction took 550.93 ms. Allocated memory is still 200.3 MB. Free memory was 168.0 MB in the beginning and 138.4 MB in the end (delta: 29.6 MB). Peak memory consumption was 29.6 MB. Max. memory is 7.1 GB. [2019-09-03 19:24:02,403 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 141.6 MB. Free memory is still 107.3 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 224.92 ms. Allocated memory is still 141.6 MB. Free memory was 89.0 MB in the beginning and 80.1 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 111.47 ms. Allocated memory was 141.6 MB in the beginning and 200.3 MB in the end (delta: 58.7 MB). Free memory was 80.1 MB in the beginning and 177.9 MB in the end (delta: -97.8 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 186.36 ms. Allocated memory is still 200.3 MB. Free memory was 177.9 MB in the beginning and 168.0 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 550.93 ms. Allocated memory is still 200.3 MB. Free memory was 168.0 MB in the beginning and 138.4 MB in the end (delta: 29.6 MB). Peak memory consumption was 29.6 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: 12]: Loop Invariant Derived loop invariant: x == 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. SAFE Result, 0.4s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 21 SDtfs, 5 SDslu, 19 SDs, 0 SdLazy, 7 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 10 PreInvPairs, 12 NumberOfFragments, 12 HoareAnnotationTreeSize, 10 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 252 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...