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-invgen/id_build.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-efa34d5 [2019-09-16 17:03:23,386 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-16 17:03:23,388 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-16 17:03:23,400 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-16 17:03:23,410 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-16 17:03:23,411 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-16 17:03:23,412 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-16 17:03:23,413 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-16 17:03:23,414 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-16 17:03:23,415 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-16 17:03:23,417 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-16 17:03:23,428 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-16 17:03:23,430 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-16 17:03:23,431 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-16 17:03:23,432 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-16 17:03:23,433 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-16 17:03:23,436 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-16 17:03:23,439 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-16 17:03:23,440 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-16 17:03:23,441 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-16 17:03:23,442 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-16 17:03:23,443 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-16 17:03:23,443 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-16 17:03:23,444 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-16 17:03:23,444 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-16 17:03:23,444 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-16 17:03:23,445 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-16 17:03:23,446 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-16 17:03:23,447 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 [2019-09-16 17:03:23,462 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-16 17:03:23,462 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-16 17:03:23,463 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-16 17:03:23,463 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-16 17:03:23,464 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-16 17:03:23,464 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-16 17:03:23,464 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-16 17:03:23,464 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-16 17:03:23,465 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-16 17:03:23,465 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-16 17:03:23,466 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-16 17:03:23,466 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-16 17:03:23,466 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-16 17:03:23,466 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-16 17:03:23,466 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-16 17:03:23,467 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-16 17:03:23,467 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-16 17:03:23,467 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-16 17:03:23,467 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-16 17:03:23,467 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-16 17:03:23,468 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-16 17:03:23,468 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-16 17:03:23,468 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-16 17:03:23,468 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-16 17:03:23,469 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-16 17:03:23,469 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-16 17:03:23,469 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-16 17:03:23,469 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-16 17:03:23,469 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-16 17:03:23,470 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-16 17:03:23,508 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-16 17:03:23,528 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-16 17:03:23,532 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-16 17:03:23,534 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-16 17:03:23,534 INFO L275 PluginConnector]: CDTParser initialized [2019-09-16 17:03:23,535 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/id_build.i [2019-09-16 17:03:23,601 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/264193269/430af5f7d12c4460bfcbf5108d66f16a/FLAGcc72903b6 [2019-09-16 17:03:24,032 INFO L306 CDTParser]: Found 1 translation units. [2019-09-16 17:03:24,033 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/id_build.i [2019-09-16 17:03:24,039 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/264193269/430af5f7d12c4460bfcbf5108d66f16a/FLAGcc72903b6 [2019-09-16 17:03:24,433 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/264193269/430af5f7d12c4460bfcbf5108d66f16a [2019-09-16 17:03:24,444 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-16 17:03:24,446 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-16 17:03:24,447 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-16 17:03:24,447 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-16 17:03:24,451 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-16 17:03:24,455 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 05:03:24" (1/1) ... [2019-09-16 17:03:24,458 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73eb1a11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:03:24, skipping insertion in model container [2019-09-16 17:03:24,459 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 05:03:24" (1/1) ... [2019-09-16 17:03:24,467 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-16 17:03:24,486 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-16 17:03:24,697 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 17:03:24,702 INFO L188 MainTranslator]: Completed pre-run [2019-09-16 17:03:24,715 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 17:03:24,727 INFO L192 MainTranslator]: Completed translation [2019-09-16 17:03:24,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:03:24 WrapperNode [2019-09-16 17:03:24,728 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-16 17:03:24,728 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-16 17:03:24,729 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-16 17:03:24,729 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-16 17:03:24,825 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:03:24" (1/1) ... [2019-09-16 17:03:24,825 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:03:24" (1/1) ... [2019-09-16 17:03:24,834 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:03:24" (1/1) ... [2019-09-16 17:03:24,834 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:03:24" (1/1) ... [2019-09-16 17:03:24,838 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:03:24" (1/1) ... [2019-09-16 17:03:24,844 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:03:24" (1/1) ... [2019-09-16 17:03:24,845 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:03:24" (1/1) ... [2019-09-16 17:03:24,849 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-16 17:03:24,850 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-16 17:03:24,850 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-16 17:03:24,850 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-16 17:03:24,851 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:03:24" (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 [2019-09-16 17:03:24,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-16 17:03:24,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-16 17:03:24,910 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-16 17:03:24,910 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-16 17:03:24,910 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-16 17:03:24,910 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-16 17:03:24,910 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-16 17:03:24,911 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-16 17:03:24,911 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-16 17:03:24,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-16 17:03:24,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-16 17:03:25,103 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-16 17:03:25,103 INFO L283 CfgBuilder]: Removed 2 assume(true) statements. [2019-09-16 17:03:25,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 05:03:25 BoogieIcfgContainer [2019-09-16 17:03:25,105 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-16 17:03:25,109 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-16 17:03:25,109 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-16 17:03:25,113 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-16 17:03:25,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 05:03:24" (1/3) ... [2019-09-16 17:03:25,114 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fca4042 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 05:03:25, skipping insertion in model container [2019-09-16 17:03:25,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:03:24" (2/3) ... [2019-09-16 17:03:25,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fca4042 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 05:03:25, skipping insertion in model container [2019-09-16 17:03:25,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 05:03:25" (3/3) ... [2019-09-16 17:03:25,135 INFO L109 eAbstractionObserver]: Analyzing ICFG id_build.i [2019-09-16 17:03:25,157 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-16 17:03:25,167 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-16 17:03:25,187 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-16 17:03:25,224 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-16 17:03:25,224 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-16 17:03:25,224 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-16 17:03:25,224 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-16 17:03:25,224 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-16 17:03:25,225 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-16 17:03:25,225 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-16 17:03:25,225 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-16 17:03:25,241 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2019-09-16 17:03:25,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-09-16 17:03:25,250 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:03:25,251 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:03:25,254 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:03:25,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:03:25,260 INFO L82 PathProgramCache]: Analyzing trace with hash -741608086, now seen corresponding path program 1 times [2019-09-16 17:03:25,263 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:03:25,322 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:03:25,322 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:03:25,322 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:03:25,322 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:03:25,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:03:25,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:03:25,495 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:03:25,495 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-16 17:03:25,496 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:03:25,501 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-16 17:03:25,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-16 17:03:25,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-16 17:03:25,524 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 5 states. [2019-09-16 17:03:25,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:03:25,653 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2019-09-16 17:03:25,653 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-16 17:03:25,655 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-09-16 17:03:25,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:03:25,669 INFO L225 Difference]: With dead ends: 26 [2019-09-16 17:03:25,669 INFO L226 Difference]: Without dead ends: 21 [2019-09-16 17:03:25,674 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 [2019-09-16 17:03:25,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-09-16 17:03:25,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-09-16 17:03:25,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-09-16 17:03:25,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2019-09-16 17:03:25,729 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 11 [2019-09-16 17:03:25,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:03:25,730 INFO L475 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2019-09-16 17:03:25,730 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-16 17:03:25,730 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2019-09-16 17:03:25,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-09-16 17:03:25,732 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:03:25,733 INFO L407 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:03:25,733 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:03:25,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:03:25,735 INFO L82 PathProgramCache]: Analyzing trace with hash -1356428647, now seen corresponding path program 1 times [2019-09-16 17:03:25,736 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:03:25,738 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:03:25,738 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:03:25,739 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:03:25,739 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:03:25,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:03:25,822 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:03:25,823 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:03:25,823 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-16 17:03:25,823 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:03:25,825 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-16 17:03:25,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-16 17:03:25,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-16 17:03:25,826 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 5 states. [2019-09-16 17:03:25,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:03:25,879 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2019-09-16 17:03:25,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-16 17:03:25,880 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2019-09-16 17:03:25,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:03:25,880 INFO L225 Difference]: With dead ends: 19 [2019-09-16 17:03:25,881 INFO L226 Difference]: Without dead ends: 0 [2019-09-16 17:03:25,881 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 [2019-09-16 17:03:25,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-16 17:03:25,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-16 17:03:25,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-16 17:03:25,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-16 17:03:25,883 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2019-09-16 17:03:25,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:03:25,883 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-16 17:03:25,883 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-16 17:03:25,884 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-16 17:03:25,884 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-16 17:03:25,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 05:03:25 BoogieIcfgContainer [2019-09-16 17:03:25,889 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-16 17:03:25,892 INFO L168 Benchmark]: Toolchain (without parser) took 1445.32 ms. Allocated memory was 133.2 MB in the beginning and 200.8 MB in the end (delta: 67.6 MB). Free memory was 89.2 MB in the beginning and 131.4 MB in the end (delta: -42.3 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. [2019-09-16 17:03:25,893 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 133.2 MB. Free memory was 107.3 MB in the beginning and 107.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-16 17:03:25,894 INFO L168 Benchmark]: CACSL2BoogieTranslator took 281.30 ms. Allocated memory is still 133.2 MB. Free memory was 89.0 MB in the beginning and 79.5 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2019-09-16 17:03:25,895 INFO L168 Benchmark]: Boogie Preprocessor took 120.85 ms. Allocated memory was 133.2 MB in the beginning and 200.8 MB in the end (delta: 67.6 MB). Free memory was 79.5 MB in the beginning and 177.3 MB in the end (delta: -97.7 MB). Peak memory consumption was 16.1 MB. Max. memory is 7.1 GB. [2019-09-16 17:03:25,896 INFO L168 Benchmark]: RCFGBuilder took 255.69 ms. Allocated memory is still 200.8 MB. Free memory was 177.3 MB in the beginning and 165.3 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. [2019-09-16 17:03:25,897 INFO L168 Benchmark]: TraceAbstraction took 780.45 ms. Allocated memory is still 200.8 MB. Free memory was 165.3 MB in the beginning and 131.4 MB in the end (delta: 33.9 MB). Peak memory consumption was 33.9 MB. Max. memory is 7.1 GB. [2019-09-16 17:03:25,901 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 133.2 MB. Free memory was 107.3 MB in the beginning and 107.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 281.30 ms. Allocated memory is still 133.2 MB. Free memory was 89.0 MB in the beginning and 79.5 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 120.85 ms. Allocated memory was 133.2 MB in the beginning and 200.8 MB in the end (delta: 67.6 MB). Free memory was 79.5 MB in the beginning and 177.3 MB in the end (delta: -97.7 MB). Peak memory consumption was 16.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 255.69 ms. Allocated memory is still 200.8 MB. Free memory was 177.3 MB in the beginning and 165.3 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 780.45 ms. Allocated memory is still 200.8 MB. Free memory was 165.3 MB in the beginning and 131.4 MB in the end (delta: 33.9 MB). Peak memory consumption was 33.9 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, 22 locations, 1 error locations. SAFE Result, 0.6s OverallTime, 2 OverallIterations, 2 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 35 SDtfs, 14 SDslu, 82 SDs, 0 SdLazy, 33 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred 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, 27 NumberOfCodeBlocks, 27 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 25 ConstructedInterpolants, 0 QuantifiedInterpolants, 675 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 2/2 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...