/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/array-examples/standard_two_index_03.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 22:27:11,086 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 22:27:11,089 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 22:27:11,108 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 22:27:11,109 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 22:27:11,111 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 22:27:11,112 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 22:27:11,121 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 22:27:11,125 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 22:27:11,129 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 22:27:11,130 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 22:27:11,132 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 22:27:11,132 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 22:27:11,134 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 22:27:11,136 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 22:27:11,137 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 22:27:11,139 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 22:27:11,140 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 22:27:11,141 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 22:27:11,146 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 22:27:11,150 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 22:27:11,153 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 22:27:11,156 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 22:27:11,156 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 22:27:11,159 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-06 22:27:11,159 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-06 22:27:11,159 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-06 22:27:11,161 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-06 22:27:11,161 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-06 22:27:11,163 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-06 22:27:11,163 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 22:27:11,165 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 22:27:11,166 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 22:27:11,167 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 22:27:11,168 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 22:27:11,169 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 22:27:11,169 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 22:27:11,170 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 22:27:11,170 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 22:27:11,171 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 22:27:11,171 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 22:27:11,172 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 [2019-11-06 22:27:11,200 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 22:27:11,201 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 22:27:11,202 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 22:27:11,202 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 22:27:11,203 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 22:27:11,203 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 22:27:11,203 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 22:27:11,203 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 22:27:11,203 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 22:27:11,204 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 22:27:11,204 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 22:27:11,204 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 22:27:11,204 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 22:27:11,204 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 22:27:11,205 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 22:27:11,205 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 22:27:11,205 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 22:27:11,205 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 22:27:11,205 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 22:27:11,206 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 22:27:11,206 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 22:27:11,206 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:27:11,206 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 22:27:11,206 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 22:27:11,207 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 22:27:11,207 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 22:27:11,207 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 22:27:11,207 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 22:27:11,207 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 [2019-11-06 22:27:11,493 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 22:27:11,509 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 22:27:11,513 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 22:27:11,514 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 22:27:11,515 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 22:27:11,515 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_two_index_03.i [2019-11-06 22:27:11,589 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9dc4b3e91/d285ea26e6eb416ca073f121c3b3266d/FLAG00409fb99 [2019-11-06 22:27:12,044 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:27:12,045 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_two_index_03.i [2019-11-06 22:27:12,051 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9dc4b3e91/d285ea26e6eb416ca073f121c3b3266d/FLAG00409fb99 [2019-11-06 22:27:12,429 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9dc4b3e91/d285ea26e6eb416ca073f121c3b3266d [2019-11-06 22:27:12,436 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:27:12,438 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:27:12,439 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:27:12,439 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:27:12,442 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:27:12,443 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:27:12" (1/1) ... [2019-11-06 22:27:12,446 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ceec6f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:12, skipping insertion in model container [2019-11-06 22:27:12,447 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:27:12" (1/1) ... [2019-11-06 22:27:12,454 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:27:12,475 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:27:12,669 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:27:12,674 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:27:12,695 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:27:12,715 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:27:12,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:12 WrapperNode [2019-11-06 22:27:12,715 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:27:12,716 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:27:12,716 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:27:12,716 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:27:12,814 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:12" (1/1) ... [2019-11-06 22:27:12,814 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:12" (1/1) ... [2019-11-06 22:27:12,820 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:12" (1/1) ... [2019-11-06 22:27:12,821 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:12" (1/1) ... [2019-11-06 22:27:12,827 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:12" (1/1) ... [2019-11-06 22:27:12,834 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:12" (1/1) ... [2019-11-06 22:27:12,836 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:12" (1/1) ... [2019-11-06 22:27:12,839 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:27:12,840 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:27:12,840 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:27:12,840 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:27:12,843 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:12" (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 [2019-11-06 22:27:12,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:27:12,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:27:12,894 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-11-06 22:27:12,894 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:27:12,894 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:27:12,894 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-11-06 22:27:12,894 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 22:27:12,895 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:27:12,895 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 22:27:12,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 22:27:12,895 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 22:27:12,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 22:27:12,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:27:12,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:27:13,151 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:27:13,151 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-11-06 22:27:13,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:27:13 BoogieIcfgContainer [2019-11-06 22:27:13,153 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:27:13,154 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:27:13,154 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:27:13,157 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:27:13,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:27:12" (1/3) ... [2019-11-06 22:27:13,171 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79525741 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:27:13, skipping insertion in model container [2019-11-06 22:27:13,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:12" (2/3) ... [2019-11-06 22:27:13,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79525741 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:27:13, skipping insertion in model container [2019-11-06 22:27:13,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:27:13" (3/3) ... [2019-11-06 22:27:13,174 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_two_index_03.i [2019-11-06 22:27:13,184 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:27:13,193 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 22:27:13,205 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 22:27:13,228 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:27:13,229 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:27:13,229 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:27:13,229 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:27:13,229 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:27:13,229 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:27:13,229 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:27:13,229 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:27:13,243 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2019-11-06 22:27:13,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-06 22:27:13,249 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:27:13,250 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:27:13,252 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:27:13,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:27:13,258 INFO L82 PathProgramCache]: Analyzing trace with hash -2029643862, now seen corresponding path program 1 times [2019-11-06 22:27:13,267 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:27:13,267 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616375593] [2019-11-06 22:27:13,267 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:27:13,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:27:13,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:27:13,388 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616375593] [2019-11-06 22:27:13,389 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:27:13,389 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-06 22:27:13,390 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710032234] [2019-11-06 22:27:13,393 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-06 22:27:13,394 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:27:13,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-06 22:27:13,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-06 22:27:13,411 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 2 states. [2019-11-06 22:27:13,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:27:13,435 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2019-11-06 22:27:13,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-06 22:27:13,436 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2019-11-06 22:27:13,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:27:13,443 INFO L225 Difference]: With dead ends: 41 [2019-11-06 22:27:13,443 INFO L226 Difference]: Without dead ends: 19 [2019-11-06 22:27:13,446 INFO L630 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 [2019-11-06 22:27:13,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-11-06 22:27:13,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2019-11-06 22:27:13,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-11-06 22:27:13,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2019-11-06 22:27:13,484 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 15 [2019-11-06 22:27:13,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:27:13,485 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2019-11-06 22:27:13,485 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-06 22:27:13,485 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2019-11-06 22:27:13,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-06 22:27:13,486 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:27:13,486 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:27:13,487 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:27:13,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:27:13,487 INFO L82 PathProgramCache]: Analyzing trace with hash 905206694, now seen corresponding path program 1 times [2019-11-06 22:27:13,488 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:27:13,488 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491960329] [2019-11-06 22:27:13,488 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:27:13,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:27:13,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:27:13,562 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491960329] [2019-11-06 22:27:13,564 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:27:13,565 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 22:27:13,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142633505] [2019-11-06 22:27:13,567 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 22:27:13,567 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:27:13,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 22:27:13,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:27:13,568 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 3 states. [2019-11-06 22:27:13,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:27:13,602 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2019-11-06 22:27:13,603 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 22:27:13,603 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2019-11-06 22:27:13,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:27:13,605 INFO L225 Difference]: With dead ends: 32 [2019-11-06 22:27:13,605 INFO L226 Difference]: Without dead ends: 20 [2019-11-06 22:27:13,606 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:27:13,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-11-06 22:27:13,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-11-06 22:27:13,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-06 22:27:13,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2019-11-06 22:27:13,613 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 15 [2019-11-06 22:27:13,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:27:13,613 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2019-11-06 22:27:13,613 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 22:27:13,614 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2019-11-06 22:27:13,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-06 22:27:13,615 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:27:13,615 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:27:13,615 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:27:13,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:27:13,616 INFO L82 PathProgramCache]: Analyzing trace with hash -764882998, now seen corresponding path program 1 times [2019-11-06 22:27:13,616 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:27:13,616 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737728302] [2019-11-06 22:27:13,617 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:27:13,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:27:13,694 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-06 22:27:13,694 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737728302] [2019-11-06 22:27:13,695 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:27:13,695 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 22:27:13,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821543006] [2019-11-06 22:27:13,698 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 22:27:13,698 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:27:13,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 22:27:13,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:27:13,699 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 3 states. [2019-11-06 22:27:13,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:27:13,754 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2019-11-06 22:27:13,754 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 22:27:13,754 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2019-11-06 22:27:13,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:27:13,757 INFO L225 Difference]: With dead ends: 34 [2019-11-06 22:27:13,757 INFO L226 Difference]: Without dead ends: 24 [2019-11-06 22:27:13,758 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:27:13,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-11-06 22:27:13,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 21. [2019-11-06 22:27:13,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-11-06 22:27:13,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2019-11-06 22:27:13,768 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 16 [2019-11-06 22:27:13,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:27:13,769 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2019-11-06 22:27:13,769 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 22:27:13,769 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2019-11-06 22:27:13,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-06 22:27:13,770 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:27:13,770 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:27:13,771 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:27:13,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:27:13,771 INFO L82 PathProgramCache]: Analyzing trace with hash -59429947, now seen corresponding path program 1 times [2019-11-06 22:27:13,771 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:27:13,772 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568478927] [2019-11-06 22:27:13,772 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:27:13,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:27:13,838 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-06 22:27:13,839 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568478927] [2019-11-06 22:27:13,839 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120069159] [2019-11-06 22:27:13,839 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:27:13,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:27:13,898 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 22:27:13,905 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:27:13,960 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-06 22:27:13,960 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-06 22:27:14,005 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-06 22:27:14,006 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1586836645] [2019-11-06 22:27:14,020 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 18 [2019-11-06 22:27:14,056 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-11-06 22:27:14,056 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-11-06 22:27:14,114 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-11-06 22:27:14,115 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Performed 15 root evaluator evaluations with a maximum evaluation depth of 0. Performed 15 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 22 variables. [2019-11-06 22:27:14,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:27:14,118 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-11-06 22:27:14,157 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-11-06 22:27:14,157 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-11-06 22:27:14,159 INFO L553 sIntCurrentIteration]: We unified 16 AI predicates to 16 [2019-11-06 22:27:14,160 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-11-06 22:27:14,160 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-11-06 22:27:14,161 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4, 4, 4] total 8 [2019-11-06 22:27:14,161 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629630871] [2019-11-06 22:27:14,162 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-06 22:27:14,162 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:27:14,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:27:14,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2019-11-06 22:27:14,163 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 2 states. [2019-11-06 22:27:14,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:27:14,165 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2019-11-06 22:27:14,166 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-06 22:27:14,166 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2019-11-06 22:27:14,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:27:14,166 INFO L225 Difference]: With dead ends: 21 [2019-11-06 22:27:14,167 INFO L226 Difference]: Without dead ends: 0 [2019-11-06 22:27:14,167 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2019-11-06 22:27:14,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-06 22:27:14,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-06 22:27:14,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-06 22:27:14,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-06 22:27:14,169 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2019-11-06 22:27:14,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:27:14,169 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-06 22:27:14,169 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-06 22:27:14,169 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-06 22:27:14,170 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-06 22:27:14,375 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:27:14,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-06 22:27:14,404 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-11-06 22:27:14,404 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-11-06 22:27:14,404 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-11-06 22:27:14,405 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-06 22:27:14,405 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-11-06 22:27:14,405 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-11-06 22:27:14,405 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-06 22:27:14,405 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 4 31) no Hoare annotation was computed. [2019-11-06 22:27:14,405 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 4 31) no Hoare annotation was computed. [2019-11-06 22:27:14,406 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 4 31) the Hoare annotation is: true [2019-11-06 22:27:14,406 INFO L439 ceAbstractionStarter]: At program point L26(line 26) the Hoare annotation is: false [2019-11-06 22:27:14,406 INFO L443 ceAbstractionStarter]: For program point L26-1(line 26) no Hoare annotation was computed. [2019-11-06 22:27:14,406 INFO L439 ceAbstractionStarter]: At program point L24-2(lines 24 29) the Hoare annotation is: false [2019-11-06 22:27:14,406 INFO L443 ceAbstractionStarter]: For program point L24-3(lines 24 29) no Hoare annotation was computed. [2019-11-06 22:27:14,407 INFO L439 ceAbstractionStarter]: At program point L16-2(lines 16 21) the Hoare annotation is: false [2019-11-06 22:27:14,407 INFO L443 ceAbstractionStarter]: For program point L16-3(lines 16 21) no Hoare annotation was computed. [2019-11-06 22:27:14,407 INFO L439 ceAbstractionStarter]: At program point L10-2(lines 10 14) the Hoare annotation is: false [2019-11-06 22:27:14,407 INFO L443 ceAbstractionStarter]: For program point L10-3(lines 10 14) no Hoare annotation was computed. [2019-11-06 22:27:14,407 INFO L443 ceAbstractionStarter]: For program point L2-1(line 2) no Hoare annotation was computed. [2019-11-06 22:27:14,407 INFO L443 ceAbstractionStarter]: For program point L2-3(line 2) no Hoare annotation was computed. [2019-11-06 22:27:14,408 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(line 2) the Hoare annotation is: true [2019-11-06 22:27:14,408 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 2) no Hoare annotation was computed. [2019-11-06 22:27:14,408 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(line 2) no Hoare annotation was computed. [2019-11-06 22:27:14,408 INFO L443 ceAbstractionStarter]: For program point L2(line 2) no Hoare annotation was computed. [2019-11-06 22:27:14,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:27:14 BoogieIcfgContainer [2019-11-06 22:27:14,417 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-06 22:27:14,420 INFO L168 Benchmark]: Toolchain (without parser) took 1981.52 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 102.4 MB in the beginning and 101.7 MB in the end (delta: 616.5 kB). Peak memory consumption was 65.1 MB. Max. memory is 7.1 GB. [2019-11-06 22:27:14,421 INFO L168 Benchmark]: CDTParser took 1.18 ms. Allocated memory is still 138.9 MB. Free memory was 120.6 MB in the beginning and 120.4 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2019-11-06 22:27:14,422 INFO L168 Benchmark]: CACSL2BoogieTranslator took 276.93 ms. Allocated memory is still 138.9 MB. Free memory was 102.1 MB in the beginning and 91.7 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2019-11-06 22:27:14,423 INFO L168 Benchmark]: Boogie Preprocessor took 123.40 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 91.7 MB in the beginning and 181.2 MB in the end (delta: -89.5 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. [2019-11-06 22:27:14,424 INFO L168 Benchmark]: RCFGBuilder took 313.13 ms. Allocated memory is still 203.4 MB. Free memory was 181.2 MB in the beginning and 167.0 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. [2019-11-06 22:27:14,425 INFO L168 Benchmark]: TraceAbstraction took 1263.62 ms. Allocated memory is still 203.4 MB. Free memory was 166.3 MB in the beginning and 101.7 MB in the end (delta: 64.6 MB). Peak memory consumption was 64.6 MB. Max. memory is 7.1 GB. [2019-11-06 22:27:14,429 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.18 ms. Allocated memory is still 138.9 MB. Free memory was 120.6 MB in the beginning and 120.4 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 276.93 ms. Allocated memory is still 138.9 MB. Free memory was 102.1 MB in the beginning and 91.7 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 123.40 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 91.7 MB in the beginning and 181.2 MB in the end (delta: -89.5 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 313.13 ms. Allocated memory is still 203.4 MB. Free memory was 181.2 MB in the beginning and 167.0 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1263.62 ms. Allocated memory is still 203.4 MB. Free memory was 166.3 MB in the beginning and 101.7 MB in the end (delta: 64.6 MB). Peak memory consumption was 64.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 2]: 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: 24]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 24 locations, 1 error locations. Result: SAFE, OverallTime: 1.1s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 70 SDtfs, 1 SDslu, 24 SDs, 0 SdLazy, 19 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred 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, 4 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 12 PreInvPairs, 12 NumberOfFragments, 9 HoareAnnotationTreeSize, 12 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 80 NumberOfCodeBlocks, 80 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 91 ConstructedInterpolants, 0 QuantifiedInterpolants, 1635 SizeOfPredicates, 1 NumberOfNonLiveVariables, 79 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 4/7 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: TIME[ms]: 99, ITERATIONS: 1, WAS_STRONG: 1, WEAKENING_RATIO: 0.90625, AVG_VARS_REMOVED_DURING_WEAKENING: 1.0, AVG_WEAKENED_CONJUNCTS: 0.375, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...