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/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/loop-invariants/eq1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-0883e75 [2019-09-05 13:14:31,596 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-05 13:14:31,598 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-05 13:14:31,609 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-05 13:14:31,610 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-05 13:14:31,611 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-05 13:14:31,612 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-05 13:14:31,613 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-05 13:14:31,625 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-05 13:14:31,626 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-05 13:14:31,627 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-05 13:14:31,628 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-05 13:14:31,629 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-05 13:14:31,631 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-05 13:14:31,632 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-05 13:14:31,634 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-05 13:14:31,635 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-05 13:14:31,635 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-05 13:14:31,639 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-05 13:14:31,641 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-05 13:14:31,647 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-05 13:14:31,648 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-05 13:14:31,651 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-05 13:14:31,652 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-05 13:14:31,655 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-05 13:14:31,656 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-05 13:14:31,656 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-05 13:14:31,657 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-05 13:14:31,657 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-05 13:14:31,659 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-05 13:14:31,660 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-05 13:14:31,662 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-05 13:14:31,662 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-05 13:14:31,663 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-05 13:14:31,665 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-05 13:14:31,665 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-05 13:14:31,666 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-05 13:14:31,666 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-05 13:14:31,666 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-05 13:14:31,668 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-05 13:14:31,669 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-05 13:14:31,670 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-05 13:14:31,691 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-05 13:14:31,692 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-05 13:14:31,692 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-05 13:14:31,692 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-05 13:14:31,693 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-05 13:14:31,693 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-05 13:14:31,693 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-05 13:14:31,694 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-05 13:14:31,694 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-05 13:14:31,694 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-05 13:14:31,695 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-05 13:14:31,695 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-05 13:14:31,695 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-05 13:14:31,695 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-05 13:14:31,696 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-05 13:14:31,696 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-05 13:14:31,696 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-05 13:14:31,696 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-05 13:14:31,696 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-05 13:14:31,697 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-05 13:14:31,697 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-05 13:14:31,697 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-05 13:14:31,697 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-05 13:14:31,697 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-05 13:14:31,698 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-05 13:14:31,698 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-05 13:14:31,698 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-05 13:14:31,698 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-05 13:14:31,698 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-05 13:14:31,699 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-05 13:14:31,726 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-05 13:14:31,738 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-05 13:14:31,741 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-05 13:14:31,743 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-05 13:14:31,743 INFO L275 PluginConnector]: CDTParser initialized [2019-09-05 13:14:31,744 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invariants/eq1.c [2019-09-05 13:14:31,800 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d29c71f3/282509f357ab49d5b58a11c34f5a07f3/FLAGac941cdc1 [2019-09-05 13:14:32,238 INFO L306 CDTParser]: Found 1 translation units. [2019-09-05 13:14:32,239 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invariants/eq1.c [2019-09-05 13:14:32,244 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d29c71f3/282509f357ab49d5b58a11c34f5a07f3/FLAGac941cdc1 [2019-09-05 13:14:32,683 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d29c71f3/282509f357ab49d5b58a11c34f5a07f3 [2019-09-05 13:14:32,695 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-05 13:14:32,696 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-05 13:14:32,697 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-05 13:14:32,697 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-05 13:14:32,701 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-05 13:14:32,702 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.09 01:14:32" (1/1) ... [2019-09-05 13:14:32,705 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@717d0fed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:14:32, skipping insertion in model container [2019-09-05 13:14:32,705 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.09 01:14:32" (1/1) ... [2019-09-05 13:14:32,712 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-05 13:14:32,729 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-05 13:14:32,875 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-05 13:14:32,879 INFO L188 MainTranslator]: Completed pre-run [2019-09-05 13:14:32,896 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-05 13:14:32,910 INFO L192 MainTranslator]: Completed translation [2019-09-05 13:14:32,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:14:32 WrapperNode [2019-09-05 13:14:32,911 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-05 13:14:32,912 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-05 13:14:32,912 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-05 13:14:32,912 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-05 13:14:33,021 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:14:32" (1/1) ... [2019-09-05 13:14:33,022 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:14:32" (1/1) ... [2019-09-05 13:14:33,026 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:14:32" (1/1) ... [2019-09-05 13:14:33,026 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:14:32" (1/1) ... [2019-09-05 13:14:33,029 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:14:32" (1/1) ... [2019-09-05 13:14:33,034 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:14:32" (1/1) ... [2019-09-05 13:14:33,035 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:14:32" (1/1) ... [2019-09-05 13:14:33,036 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-05 13:14:33,036 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-05 13:14:33,037 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-05 13:14:33,037 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-05 13:14:33,038 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:14:32" (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 [2019-09-05 13:14:33,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-05 13:14:33,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-05 13:14:33,090 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-05 13:14:33,090 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-05 13:14:33,091 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-05 13:14:33,091 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-09-05 13:14:33,091 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-05 13:14:33,091 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-05 13:14:33,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-05 13:14:33,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-05 13:14:33,264 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-05 13:14:33,264 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-05 13:14:33,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.09 01:14:33 BoogieIcfgContainer [2019-09-05 13:14:33,266 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-05 13:14:33,267 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-05 13:14:33,267 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-05 13:14:33,284 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-05 13:14:33,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.09 01:14:32" (1/3) ... [2019-09-05 13:14:33,285 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@90d1068 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.09 01:14:33, skipping insertion in model container [2019-09-05 13:14:33,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:14:32" (2/3) ... [2019-09-05 13:14:33,285 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@90d1068 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.09 01:14:33, skipping insertion in model container [2019-09-05 13:14:33,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.09 01:14:33" (3/3) ... [2019-09-05 13:14:33,289 INFO L109 eAbstractionObserver]: Analyzing ICFG eq1.c [2019-09-05 13:14:33,304 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-05 13:14:33,335 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-05 13:14:33,370 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-05 13:14:33,395 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-05 13:14:33,396 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-05 13:14:33,396 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-05 13:14:33,396 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-05 13:14:33,396 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-05 13:14:33,396 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-05 13:14:33,397 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-05 13:14:33,397 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-05 13:14:33,409 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-09-05 13:14:33,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-09-05 13:14:33,416 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 13:14:33,417 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 13:14:33,419 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 13:14:33,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 13:14:33,423 INFO L82 PathProgramCache]: Analyzing trace with hash 1712329921, now seen corresponding path program 1 times [2019-09-05 13:14:33,425 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-05 13:14:33,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 13:14:33,462 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 13:14:33,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 13:14:33,462 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-05 13:14:33,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 13:14:33,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-05 13:14:33,515 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-05 13:14:33,515 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-05 13:14:33,515 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-05 13:14:33,519 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-05 13:14:33,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-05 13:14:33,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-05 13:14:33,532 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2019-09-05 13:14:33,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-05 13:14:33,544 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2019-09-05 13:14:33,544 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-05 13:14:33,545 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-09-05 13:14:33,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-05 13:14:33,554 INFO L225 Difference]: With dead ends: 19 [2019-09-05 13:14:33,555 INFO L226 Difference]: Without dead ends: 12 [2019-09-05 13:14:33,556 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 [2019-09-05 13:14:33,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-09-05 13:14:33,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-09-05 13:14:33,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-09-05 13:14:33,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2019-09-05 13:14:33,588 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 10 [2019-09-05 13:14:33,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-05 13:14:33,588 INFO L475 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2019-09-05 13:14:33,588 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-05 13:14:33,589 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2019-09-05 13:14:33,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-09-05 13:14:33,589 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 13:14:33,589 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 13:14:33,590 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 13:14:33,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 13:14:33,590 INFO L82 PathProgramCache]: Analyzing trace with hash 1703094711, now seen corresponding path program 1 times [2019-09-05 13:14:33,590 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-05 13:14:33,592 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 13:14:33,592 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 13:14:33,592 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 13:14:33,592 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-05 13:14:33,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 13:14:33,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-05 13:14:33,727 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-05 13:14:33,727 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-05 13:14:33,728 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-05 13:14:33,729 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-05 13:14:33,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-05 13:14:33,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-05 13:14:33,730 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand 5 states. [2019-09-05 13:14:33,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-05 13:14:33,782 INFO L93 Difference]: Finished difference Result 10 states and 11 transitions. [2019-09-05 13:14:33,782 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-05 13:14:33,782 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-09-05 13:14:33,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-05 13:14:33,783 INFO L225 Difference]: With dead ends: 10 [2019-09-05 13:14:33,783 INFO L226 Difference]: Without dead ends: 0 [2019-09-05 13:14:33,784 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-05 13:14:33,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-05 13:14:33,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-05 13:14:33,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-05 13:14:33,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-05 13:14:33,785 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2019-09-05 13:14:33,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-05 13:14:33,786 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-05 13:14:33,786 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-05 13:14:33,786 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-05 13:14:33,786 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-05 13:14:33,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.09 01:14:33 BoogieIcfgContainer [2019-09-05 13:14:33,791 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-05 13:14:33,794 INFO L168 Benchmark]: Toolchain (without parser) took 1096.60 ms. Allocated memory was 137.9 MB in the beginning and 198.2 MB in the end (delta: 60.3 MB). Free memory was 85.5 MB in the beginning and 135.8 MB in the end (delta: -50.3 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2019-09-05 13:14:33,795 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 137.9 MB. Free memory was 103.9 MB in the beginning and 103.7 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-05 13:14:33,796 INFO L168 Benchmark]: CACSL2BoogieTranslator took 214.21 ms. Allocated memory is still 137.9 MB. Free memory was 85.3 MB in the beginning and 76.1 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2019-09-05 13:14:33,798 INFO L168 Benchmark]: Boogie Preprocessor took 124.31 ms. Allocated memory was 137.9 MB in the beginning and 198.2 MB in the end (delta: 60.3 MB). Free memory was 76.1 MB in the beginning and 176.1 MB in the end (delta: -100.0 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. [2019-09-05 13:14:33,798 INFO L168 Benchmark]: RCFGBuilder took 229.43 ms. Allocated memory is still 198.2 MB. Free memory was 176.1 MB in the beginning and 163.9 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. [2019-09-05 13:14:33,799 INFO L168 Benchmark]: TraceAbstraction took 524.83 ms. Allocated memory is still 198.2 MB. Free memory was 163.3 MB in the beginning and 135.8 MB in the end (delta: 27.5 MB). Peak memory consumption was 27.5 MB. Max. memory is 7.1 GB. [2019-09-05 13:14:33,803 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 137.9 MB. Free memory was 103.9 MB in the beginning and 103.7 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 214.21 ms. Allocated memory is still 137.9 MB. Free memory was 85.3 MB in the beginning and 76.1 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 124.31 ms. Allocated memory was 137.9 MB in the beginning and 198.2 MB in the end (delta: 60.3 MB). Free memory was 76.1 MB in the beginning and 176.1 MB in the end (delta: -100.0 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 229.43 ms. Allocated memory is still 198.2 MB. Free memory was 176.1 MB in the beginning and 163.9 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 524.83 ms. Allocated memory is still 198.2 MB. Free memory was 163.3 MB in the beginning and 135.8 MB in the end (delta: 27.5 MB). Peak memory consumption was 27.5 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. SAFE Result, 0.4s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 28 SDtfs, 2 SDslu, 20 SDs, 0 SdLazy, 8 SolverSat, 2 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, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred 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: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 324 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...