/usr/bin/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 --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/ldv-regression/test11.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 00:27:43,380 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 00:27:43,383 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 00:27:43,401 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-11-07 00:27:43,426 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 00:27:43,428 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 00:27:43,430 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 00:27:43,432 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 00:27:43,434 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 00:27:43,435 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 00:27:43,436 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 00:27:43,441 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 00:27:43,445 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 00:27:43,447 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 00:27:43,450 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 00:27:43,451 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 00:27:43,454 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-07 00:27:43,464 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 00:27:43,465 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 00:27:43,465 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 00:27:43,466 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 [2019-11-07 00:27:43,495 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 00:27:43,501 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 00:27:43,502 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 00:27:43,502 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 00:27:43,503 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 00:27:43,503 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 00:27:43,503 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 00:27:43,503 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 00:27:43,503 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 00:27:43,504 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 00:27:43,507 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 00:27:43,507 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 00:27:43,508 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 00:27:43,508 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 00:27:43,508 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 00:27:43,508 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 00:27:43,508 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 00:27:43,509 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 00:27:43,510 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 00:27:43,510 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 00:27:43,510 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 00:27:43,511 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:27:43,511 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 00:27:43,511 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 00:27:43,511 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 00:27:43,511 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 00:27:43,512 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 00:27:43,512 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 00:27:43,512 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-11-07 00:27:43,784 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 00:27:43,802 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 00:27:43,805 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 00:27:43,807 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 00:27:43,807 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 00:27:43,808 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test11.c [2019-11-07 00:27:43,878 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e024c695/7d896ad6d34845779f6ccccea4fe93f5/FLAG208fe7c91 [2019-11-07 00:27:44,360 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 00:27:44,362 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test11.c [2019-11-07 00:27:44,368 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e024c695/7d896ad6d34845779f6ccccea4fe93f5/FLAG208fe7c91 [2019-11-07 00:27:44,741 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e024c695/7d896ad6d34845779f6ccccea4fe93f5 [2019-11-07 00:27:44,752 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 00:27:44,753 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 00:27:44,754 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 00:27:44,755 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 00:27:44,758 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 00:27:44,759 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:27:44" (1/1) ... [2019-11-07 00:27:44,762 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44932c6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:27:44, skipping insertion in model container [2019-11-07 00:27:44,763 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:27:44" (1/1) ... [2019-11-07 00:27:44,770 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 00:27:44,791 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 00:27:45,004 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:27:45,019 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 00:27:45,040 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:27:45,057 INFO L192 MainTranslator]: Completed translation [2019-11-07 00:27:45,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:27:45 WrapperNode [2019-11-07 00:27:45,057 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 00:27:45,058 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 00:27:45,058 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 00:27:45,058 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 00:27:45,157 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:27:45" (1/1) ... [2019-11-07 00:27:45,157 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:27:45" (1/1) ... [2019-11-07 00:27:45,166 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:27:45" (1/1) ... [2019-11-07 00:27:45,166 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:27:45" (1/1) ... [2019-11-07 00:27:45,173 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:27:45" (1/1) ... [2019-11-07 00:27:45,175 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:27:45" (1/1) ... [2019-11-07 00:27:45,177 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:27:45" (1/1) ... [2019-11-07 00:27:45,179 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 00:27:45,180 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 00:27:45,180 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 00:27:45,180 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 00:27:45,181 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:27:45" (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 [2019-11-07 00:27:45,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 00:27:45,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 00:27:45,238 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dummy [2019-11-07 00:27:45,238 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 00:27:45,238 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 00:27:45,238 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 00:27:45,238 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-11-07 00:27:45,239 INFO L130 BoogieDeclarations]: Found specification of procedure get_dummy [2019-11-07 00:27:45,239 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 00:27:45,239 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 00:27:45,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 00:27:45,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 00:27:45,239 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 00:27:45,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 00:27:45,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 00:27:45,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 00:27:45,503 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 00:27:45,503 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-11-07 00:27:45,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:27:45 BoogieIcfgContainer [2019-11-07 00:27:45,505 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 00:27:45,514 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 00:27:45,515 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 00:27:45,522 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 00:27:45,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:27:44" (1/3) ... [2019-11-07 00:27:45,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26331ac2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:27:45, skipping insertion in model container [2019-11-07 00:27:45,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:27:45" (2/3) ... [2019-11-07 00:27:45,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26331ac2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:27:45, skipping insertion in model container [2019-11-07 00:27:45,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:27:45" (3/3) ... [2019-11-07 00:27:45,529 INFO L109 eAbstractionObserver]: Analyzing ICFG test11.c [2019-11-07 00:27:45,541 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 00:27:45,563 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 00:27:45,574 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 00:27:45,602 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 00:27:45,602 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 00:27:45,602 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 00:27:45,603 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 00:27:45,603 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 00:27:45,603 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 00:27:45,603 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 00:27:45,603 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 00:27:45,620 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-11-07 00:27:45,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-07 00:27:45,625 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:27:45,626 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:27:45,629 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:27:45,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:27:45,635 INFO L82 PathProgramCache]: Analyzing trace with hash -722462527, now seen corresponding path program 1 times [2019-11-07 00:27:45,644 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:27:45,644 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676300164] [2019-11-07 00:27:45,645 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:27:45,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:27:45,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:27:45,861 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676300164] [2019-11-07 00:27:45,863 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:27:45,863 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 00:27:45,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200432123] [2019-11-07 00:27:45,871 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 00:27:45,873 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:27:45,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:27:45,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:27:45,893 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 4 states. [2019-11-07 00:27:45,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:27:45,954 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2019-11-07 00:27:45,955 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 00:27:45,956 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2019-11-07 00:27:45,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:27:45,966 INFO L225 Difference]: With dead ends: 31 [2019-11-07 00:27:45,967 INFO L226 Difference]: Without dead ends: 19 [2019-11-07 00:27:45,970 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:27:45,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-11-07 00:27:46,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2019-11-07 00:27:46,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-11-07 00:27:46,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2019-11-07 00:27:46,009 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 15 [2019-11-07 00:27:46,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:27:46,009 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2019-11-07 00:27:46,010 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 00:27:46,010 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2019-11-07 00:27:46,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-07 00:27:46,011 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:27:46,011 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:27:46,012 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:27:46,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:27:46,012 INFO L82 PathProgramCache]: Analyzing trace with hash 1499811687, now seen corresponding path program 1 times [2019-11-07 00:27:46,012 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:27:46,013 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258494875] [2019-11-07 00:27:46,013 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:27:46,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:27:46,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:27:46,175 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258494875] [2019-11-07 00:27:46,176 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:27:46,176 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 00:27:46,176 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982744472] [2019-11-07 00:27:46,178 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 00:27:46,179 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:27:46,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 00:27:46,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:27:46,180 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 6 states. [2019-11-07 00:27:46,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:27:46,244 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2019-11-07 00:27:46,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 00:27:46,245 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2019-11-07 00:27:46,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:27:46,246 INFO L225 Difference]: With dead ends: 21 [2019-11-07 00:27:46,247 INFO L226 Difference]: Without dead ends: 19 [2019-11-07 00:27:46,248 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:27:46,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-11-07 00:27:46,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2019-11-07 00:27:46,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-11-07 00:27:46,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2019-11-07 00:27:46,253 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 17 [2019-11-07 00:27:46,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:27:46,254 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2019-11-07 00:27:46,254 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 00:27:46,254 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2019-11-07 00:27:46,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-07 00:27:46,255 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:27:46,255 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:27:46,256 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:27:46,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:27:46,256 INFO L82 PathProgramCache]: Analyzing trace with hash -750476091, now seen corresponding path program 1 times [2019-11-07 00:27:46,256 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:27:46,257 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080858068] [2019-11-07 00:27:46,257 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:27:46,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:27:46,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:27:46,330 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080858068] [2019-11-07 00:27:46,330 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:27:46,330 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 00:27:46,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636263895] [2019-11-07 00:27:46,331 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 00:27:46,331 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:27:46,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:27:46,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:27:46,332 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 4 states. [2019-11-07 00:27:46,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:27:46,355 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2019-11-07 00:27:46,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 00:27:46,356 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2019-11-07 00:27:46,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:27:46,357 INFO L225 Difference]: With dead ends: 19 [2019-11-07 00:27:46,357 INFO L226 Difference]: Without dead ends: 0 [2019-11-07 00:27:46,357 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:27:46,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-07 00:27:46,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-07 00:27:46,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-07 00:27:46,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-07 00:27:46,359 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2019-11-07 00:27:46,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:27:46,360 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-07 00:27:46,360 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 00:27:46,360 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-07 00:27:46,360 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-07 00:27:46,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-07 00:27:46,391 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-11-07 00:27:46,391 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-11-07 00:27:46,391 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-11-07 00:27:46,392 INFO L443 ceAbstractionStarter]: For program point get_dummyFINAL(lines 7 10) no Hoare annotation was computed. [2019-11-07 00:27:46,392 INFO L443 ceAbstractionStarter]: For program point L9-1(line 9) no Hoare annotation was computed. [2019-11-07 00:27:46,392 INFO L446 ceAbstractionStarter]: At program point get_dummyENTRY(lines 7 10) the Hoare annotation is: true [2019-11-07 00:27:46,392 INFO L443 ceAbstractionStarter]: For program point get_dummyEXIT(lines 7 10) no Hoare annotation was computed. [2019-11-07 00:27:46,392 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-07 00:27:46,393 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-11-07 00:27:46,393 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-11-07 00:27:46,393 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-07 00:27:46,393 INFO L439 ceAbstractionStarter]: At program point L25(lines 12 32) the Hoare annotation is: false [2019-11-07 00:27:46,393 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 12 32) no Hoare annotation was computed. [2019-11-07 00:27:46,393 INFO L443 ceAbstractionStarter]: For program point L19(line 19) no Hoare annotation was computed. [2019-11-07 00:27:46,394 INFO L439 ceAbstractionStarter]: At program point L17(line 17) the Hoare annotation is: (and (= |main_~#c~0.offset| main_~pc~0.offset) (not (= main_~pc~0.base 0)) (= main_~pc~0.base |main_~#c~0.base|)) [2019-11-07 00:27:46,394 INFO L443 ceAbstractionStarter]: For program point L19-2(line 19) no Hoare annotation was computed. [2019-11-07 00:27:46,394 INFO L443 ceAbstractionStarter]: For program point L17-1(line 17) no Hoare annotation was computed. [2019-11-07 00:27:46,394 INFO L443 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 30) no Hoare annotation was computed. [2019-11-07 00:27:46,394 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 12 32) no Hoare annotation was computed. [2019-11-07 00:27:46,394 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 12 32) the Hoare annotation is: true [2019-11-07 00:27:46,395 INFO L443 ceAbstractionStarter]: For program point L24(lines 24 26) no Hoare annotation was computed. [2019-11-07 00:27:46,395 INFO L443 ceAbstractionStarter]: For program point L18(lines 18 19) no Hoare annotation was computed. [2019-11-07 00:27:46,395 INFO L443 ceAbstractionStarter]: For program point L18-2(lines 18 21) no Hoare annotation was computed. [2019-11-07 00:27:46,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:27:46 BoogieIcfgContainer [2019-11-07 00:27:46,403 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-07 00:27:46,406 INFO L168 Benchmark]: Toolchain (without parser) took 1651.37 ms. Allocated memory was 146.3 MB in the beginning and 203.9 MB in the end (delta: 57.7 MB). Free memory was 104.0 MB in the beginning and 112.3 MB in the end (delta: -8.3 MB). Peak memory consumption was 49.4 MB. Max. memory is 7.1 GB. [2019-11-07 00:27:46,407 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 146.3 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2019-11-07 00:27:46,408 INFO L168 Benchmark]: CACSL2BoogieTranslator took 303.24 ms. Allocated memory is still 146.3 MB. Free memory was 103.8 MB in the beginning and 93.9 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2019-11-07 00:27:46,409 INFO L168 Benchmark]: Boogie Preprocessor took 121.30 ms. Allocated memory was 146.3 MB in the beginning and 203.9 MB in the end (delta: 57.7 MB). Free memory was 93.9 MB in the beginning and 182.1 MB in the end (delta: -88.2 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2019-11-07 00:27:46,409 INFO L168 Benchmark]: RCFGBuilder took 325.83 ms. Allocated memory is still 203.9 MB. Free memory was 181.4 MB in the beginning and 165.9 MB in the end (delta: 15.6 MB). Peak memory consumption was 15.6 MB. Max. memory is 7.1 GB. [2019-11-07 00:27:46,410 INFO L168 Benchmark]: TraceAbstraction took 888.61 ms. Allocated memory is still 203.9 MB. Free memory was 165.2 MB in the beginning and 112.3 MB in the end (delta: 52.9 MB). Peak memory consumption was 52.9 MB. Max. memory is 7.1 GB. [2019-11-07 00:27:46,414 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 146.3 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 303.24 ms. Allocated memory is still 146.3 MB. Free memory was 103.8 MB in the beginning and 93.9 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 121.30 ms. Allocated memory was 146.3 MB in the beginning and 203.9 MB in the end (delta: 57.7 MB). Free memory was 93.9 MB in the beginning and 182.1 MB in the end (delta: -88.2 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 325.83 ms. Allocated memory is still 203.9 MB. Free memory was 181.4 MB in the beginning and 165.9 MB in the end (delta: 15.6 MB). Peak memory consumption was 15.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 888.61 ms. Allocated memory is still 203.9 MB. Free memory was 165.2 MB in the beginning and 112.3 MB in the end (delta: 52.9 MB). Peak memory consumption was 52.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 30]: 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: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 23 locations, 1 error locations. Result: SAFE, OverallTime: 0.7s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 54 SDtfs, 23 SDslu, 106 SDs, 0 SdLazy, 20 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 7 NumberOfFragments, 17 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 50 NumberOfCodeBlocks, 50 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 47 ConstructedInterpolants, 0 QuantifiedInterpolants, 1901 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...