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_running-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:52:25,152 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:52:25,154 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:52:25,171 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:52:25,171 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:52:25,172 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:52:25,174 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:52:25,176 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:52:25,189 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:52:25,190 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:52:25,191 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:52:25,192 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:52:25,193 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:52:25,194 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:52:25,195 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:52:25,196 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:52:25,196 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:52:25,197 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:52:25,199 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:52:25,201 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:52:25,202 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:52:25,203 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:52:25,205 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:52:25,205 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:52:25,208 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-14 23:52:25,211 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:52:25,212 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:52:25,212 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:52:25,213 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:52:25,214 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:52:25,214 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:52:25,215 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:52:25,215 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:52:25,215 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:52:25,216 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:52:25,217 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:52:25,218 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 [2019-10-14 23:52:25,232 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:52:25,233 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:52:25,234 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:52:25,234 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:52:25,234 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:52:25,235 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:52:25,235 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:52:25,235 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:52:25,235 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:52:25,235 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:52:25,236 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:52:25,236 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:52:25,236 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:52:25,236 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:52:25,236 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:52:25,237 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:52:25,237 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:52:25,237 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:52:25,237 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:52:25,238 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:52:25,238 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:52:25,238 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:52:25,238 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:52:25,238 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:52:25,239 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:52:25,239 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:52:25,239 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:52:25,239 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:52:25,239 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 [2019-10-14 23:52:25,542 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:52:25,561 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:52:25,564 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:52:25,566 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:52:25,567 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:52:25,568 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_running-2.i [2019-10-14 23:52:25,635 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/634fa0e8d/be55b20fdde943bc9d526f64dc8c76dc/FLAGa2ddb1237 [2019-10-14 23:52:26,062 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:52:26,062 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_running-2.i [2019-10-14 23:52:26,069 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/634fa0e8d/be55b20fdde943bc9d526f64dc8c76dc/FLAGa2ddb1237 [2019-10-14 23:52:26,394 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/634fa0e8d/be55b20fdde943bc9d526f64dc8c76dc [2019-10-14 23:52:26,404 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:52:26,406 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:52:26,407 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:52:26,407 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:52:26,410 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:52:26,412 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:52:26" (1/1) ... [2019-10-14 23:52:26,415 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5293757 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:26, skipping insertion in model container [2019-10-14 23:52:26,415 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:52:26" (1/1) ... [2019-10-14 23:52:26,423 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:52:26,440 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:52:26,637 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:52:26,641 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:52:26,669 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:52:26,688 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:52:26,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:26 WrapperNode [2019-10-14 23:52:26,689 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:52:26,690 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:52:26,690 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:52:26,690 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:52:26,788 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:26" (1/1) ... [2019-10-14 23:52:26,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:26" (1/1) ... [2019-10-14 23:52:26,795 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:26" (1/1) ... [2019-10-14 23:52:26,795 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:26" (1/1) ... [2019-10-14 23:52:26,803 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:26" (1/1) ... [2019-10-14 23:52:26,808 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:26" (1/1) ... [2019-10-14 23:52:26,810 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:26" (1/1) ... [2019-10-14 23:52:26,813 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:52:26,819 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:52:26,819 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:52:26,820 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:52:26,821 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:26" (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 [2019-10-14 23:52:26,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:52:26,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:52:26,885 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-14 23:52:26,885 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:52:26,885 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:52:26,885 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-14 23:52:26,885 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:52:26,886 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:52:26,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 23:52:26,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 23:52:26,886 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 23:52:26,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:52:26,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:52:26,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:52:27,229 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:52:27,229 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-10-14 23:52:27,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:52:27 BoogieIcfgContainer [2019-10-14 23:52:27,231 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:52:27,232 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:52:27,232 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:52:27,235 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:52:27,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:52:26" (1/3) ... [2019-10-14 23:52:27,236 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ee20982 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:52:27, skipping insertion in model container [2019-10-14 23:52:27,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:26" (2/3) ... [2019-10-14 23:52:27,237 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ee20982 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:52:27, skipping insertion in model container [2019-10-14 23:52:27,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:52:27" (3/3) ... [2019-10-14 23:52:27,238 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_running-2.i [2019-10-14 23:52:27,246 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:52:27,252 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:52:27,261 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:52:27,284 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:52:27,285 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:52:27,285 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:52:27,285 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:52:27,285 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:52:27,285 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:52:27,285 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:52:27,285 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:52:27,302 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2019-10-14 23:52:27,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-14 23:52:27,307 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:52:27,308 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:52:27,310 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:52:27,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:52:27,316 INFO L82 PathProgramCache]: Analyzing trace with hash -766370701, now seen corresponding path program 1 times [2019-10-14 23:52:27,325 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:52:27,326 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156858055] [2019-10-14 23:52:27,326 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:27,326 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:27,326 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:52:27,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:52:27,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:52:27,452 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156858055] [2019-10-14 23:52:27,452 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:52:27,453 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-14 23:52:27,453 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480242005] [2019-10-14 23:52:27,456 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-14 23:52:27,458 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:52:27,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-14 23:52:27,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-14 23:52:27,472 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2019-10-14 23:52:27,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:52:27,498 INFO L93 Difference]: Finished difference Result 56 states and 77 transitions. [2019-10-14 23:52:27,498 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-14 23:52:27,499 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2019-10-14 23:52:27,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:52:27,508 INFO L225 Difference]: With dead ends: 56 [2019-10-14 23:52:27,508 INFO L226 Difference]: Without dead ends: 25 [2019-10-14 23:52:27,511 INFO L600 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 [2019-10-14 23:52:27,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-10-14 23:52:27,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-10-14 23:52:27,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-10-14 23:52:27,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 32 transitions. [2019-10-14 23:52:27,555 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 32 transitions. Word has length 15 [2019-10-14 23:52:27,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:52:27,556 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 32 transitions. [2019-10-14 23:52:27,556 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-14 23:52:27,556 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 32 transitions. [2019-10-14 23:52:27,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-14 23:52:27,557 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:52:27,557 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:52:27,558 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:52:27,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:52:27,558 INFO L82 PathProgramCache]: Analyzing trace with hash 288109956, now seen corresponding path program 1 times [2019-10-14 23:52:27,559 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:52:27,559 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812616763] [2019-10-14 23:52:27,559 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:27,560 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:27,560 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:52:27,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:52:27,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:52:27,633 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812616763] [2019-10-14 23:52:27,633 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:52:27,633 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-14 23:52:27,634 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485911814] [2019-10-14 23:52:27,636 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:52:27,636 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:52:27,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:52:27,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:52:27,637 INFO L87 Difference]: Start difference. First operand 25 states and 32 transitions. Second operand 3 states. [2019-10-14 23:52:27,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:52:27,765 INFO L93 Difference]: Finished difference Result 54 states and 75 transitions. [2019-10-14 23:52:27,767 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:52:27,767 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2019-10-14 23:52:27,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:52:27,768 INFO L225 Difference]: With dead ends: 54 [2019-10-14 23:52:27,769 INFO L226 Difference]: Without dead ends: 37 [2019-10-14 23:52:27,770 INFO L600 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 [2019-10-14 23:52:27,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-10-14 23:52:27,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 28. [2019-10-14 23:52:27,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-10-14 23:52:27,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2019-10-14 23:52:27,784 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 15 [2019-10-14 23:52:27,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:52:27,785 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2019-10-14 23:52:27,785 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 23:52:27,785 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2019-10-14 23:52:27,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-10-14 23:52:27,788 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:52:27,788 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:52:27,788 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:52:27,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:52:27,789 INFO L82 PathProgramCache]: Analyzing trace with hash 1452110141, now seen corresponding path program 1 times [2019-10-14 23:52:27,789 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:52:27,790 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794919292] [2019-10-14 23:52:27,790 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:27,790 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:27,790 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:52:27,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:52:27,920 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-14 23:52:27,924 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794919292] [2019-10-14 23:52:27,925 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:52:27,925 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 23:52:27,925 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165720127] [2019-10-14 23:52:27,926 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:52:27,926 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:52:27,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:52:27,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:52:27,929 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand 5 states. [2019-10-14 23:52:28,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:52:28,051 INFO L93 Difference]: Finished difference Result 46 states and 60 transitions. [2019-10-14 23:52:28,051 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-14 23:52:28,051 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2019-10-14 23:52:28,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:52:28,053 INFO L225 Difference]: With dead ends: 46 [2019-10-14 23:52:28,053 INFO L226 Difference]: Without dead ends: 34 [2019-10-14 23:52:28,054 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:52:28,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-10-14 23:52:28,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 31. [2019-10-14 23:52:28,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-10-14 23:52:28,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 39 transitions. [2019-10-14 23:52:28,060 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 39 transitions. Word has length 27 [2019-10-14 23:52:28,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:52:28,061 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 39 transitions. [2019-10-14 23:52:28,061 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 23:52:28,061 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 39 transitions. [2019-10-14 23:52:28,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-10-14 23:52:28,062 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:52:28,062 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:52:28,062 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:52:28,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:52:28,063 INFO L82 PathProgramCache]: Analyzing trace with hash -1067849793, now seen corresponding path program 1 times [2019-10-14 23:52:28,063 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:52:28,063 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546886054] [2019-10-14 23:52:28,064 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:28,064 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:28,064 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:52:28,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:52:28,184 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-14 23:52:28,185 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546886054] [2019-10-14 23:52:28,186 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:52:28,186 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 23:52:28,186 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707337123] [2019-10-14 23:52:28,186 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:52:28,187 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:52:28,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:52:28,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:52:28,188 INFO L87 Difference]: Start difference. First operand 31 states and 39 transitions. Second operand 5 states. [2019-10-14 23:52:28,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:52:28,278 INFO L93 Difference]: Finished difference Result 51 states and 66 transitions. [2019-10-14 23:52:28,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-14 23:52:28,279 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2019-10-14 23:52:28,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:52:28,280 INFO L225 Difference]: With dead ends: 51 [2019-10-14 23:52:28,280 INFO L226 Difference]: Without dead ends: 36 [2019-10-14 23:52:28,281 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:52:28,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-10-14 23:52:28,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2019-10-14 23:52:28,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-10-14 23:52:28,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2019-10-14 23:52:28,287 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 27 [2019-10-14 23:52:28,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:52:28,288 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2019-10-14 23:52:28,288 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 23:52:28,288 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2019-10-14 23:52:28,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-10-14 23:52:28,289 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:52:28,289 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:52:28,290 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:52:28,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:52:28,290 INFO L82 PathProgramCache]: Analyzing trace with hash -1877196419, now seen corresponding path program 1 times [2019-10-14 23:52:28,291 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:52:28,291 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014223330] [2019-10-14 23:52:28,291 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:28,291 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:28,292 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:52:28,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:52:28,348 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-14 23:52:28,349 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014223330] [2019-10-14 23:52:28,349 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489125258] [2019-10-14 23:52:28,350 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 [2019-10-14 23:52:28,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:52:28,417 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:52:28,424 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:52:28,459 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-14 23:52:28,459 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-14 23:52:28,490 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-14 23:52:28,491 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [726587527] [2019-10-14 23:52:28,497 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 28 [2019-10-14 23:52:28,551 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-14 23:52:28,552 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-14 23:52:28,641 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-14 23:52:28,643 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 27 variables. [2019-10-14 23:52:28,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:52:28,648 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-14 23:52:28,700 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-10-14 23:52:28,700 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-10-14 23:52:28,703 INFO L553 sIntCurrentIteration]: We unified 26 AI predicates to 26 [2019-10-14 23:52:28,703 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-14 23:52:28,704 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-10-14 23:52:28,704 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4, 4, 4] total 7 [2019-10-14 23:52:28,704 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862410095] [2019-10-14 23:52:28,706 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-14 23:52:28,706 INFO L137 tionRefinementEngine]: Using predicate unifier AbsIntPredicateUnifier provided by strategy TAIPAN [2019-10-14 23:52:28,708 INFO L124 tionRefinementEngine]: Using hoare triple checker CachingHoareTripleCheckerMap provided by strategy [2019-10-14 23:52:28,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-14 23:52:28,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-14 23:52:28,709 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. Second operand 2 states. [2019-10-14 23:52:28,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:52:28,716 INFO L93 Difference]: Finished difference Result 32 states and 40 transitions. [2019-10-14 23:52:28,716 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-14 23:52:28,717 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 27 [2019-10-14 23:52:28,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:52:28,717 INFO L225 Difference]: With dead ends: 32 [2019-10-14 23:52:28,717 INFO L226 Difference]: Without dead ends: 0 [2019-10-14 23:52:28,718 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-14 23:52:28,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-14 23:52:28,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-14 23:52:28,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-14 23:52:28,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-14 23:52:28,720 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2019-10-14 23:52:28,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:52:28,720 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-14 23:52:28,720 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-14 23:52:28,720 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-14 23:52:28,720 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-14 23:52:28,924 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:52:28,930 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-14 23:52:28,962 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-14 23:52:28,962 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-10-14 23:52:28,962 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-14 23:52:28,963 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-14 23:52:28,963 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-14 23:52:28,963 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-14 23:52:28,963 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-14 23:52:28,963 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 5 30) no Hoare annotation was computed. [2019-10-14 23:52:28,963 INFO L439 ceAbstractionStarter]: At program point L23-2(lines 23 27) the Hoare annotation is: false [2019-10-14 23:52:28,964 INFO L439 ceAbstractionStarter]: At program point L23-3(lines 23 27) the Hoare annotation is: false [2019-10-14 23:52:28,964 INFO L443 ceAbstractionStarter]: For program point L28(line 28) no Hoare annotation was computed. [2019-10-14 23:52:28,964 INFO L443 ceAbstractionStarter]: For program point L24(line 24) no Hoare annotation was computed. [2019-10-14 23:52:28,964 INFO L443 ceAbstractionStarter]: For program point L24-2(line 24) no Hoare annotation was computed. [2019-10-14 23:52:28,964 INFO L443 ceAbstractionStarter]: For program point L24-4(line 24) no Hoare annotation was computed. [2019-10-14 23:52:28,964 INFO L439 ceAbstractionStarter]: At program point L16-2(lines 16 20) the Hoare annotation is: false [2019-10-14 23:52:28,964 INFO L443 ceAbstractionStarter]: For program point L16-3(lines 16 20) no Hoare annotation was computed. [2019-10-14 23:52:28,965 INFO L443 ceAbstractionStarter]: For program point L25(line 25) no Hoare annotation was computed. [2019-10-14 23:52:28,965 INFO L443 ceAbstractionStarter]: For program point L25-2(line 25) no Hoare annotation was computed. [2019-10-14 23:52:28,965 INFO L443 ceAbstractionStarter]: For program point L25-4(line 25) no Hoare annotation was computed. [2019-10-14 23:52:28,965 INFO L443 ceAbstractionStarter]: For program point L17(lines 17 18) no Hoare annotation was computed. [2019-10-14 23:52:28,965 INFO L443 ceAbstractionStarter]: For program point L17-2(lines 17 18) no Hoare annotation was computed. [2019-10-14 23:52:28,965 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 5 30) no Hoare annotation was computed. [2019-10-14 23:52:28,965 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 5 30) the Hoare annotation is: true [2019-10-14 23:52:28,966 INFO L443 ceAbstractionStarter]: For program point L10-2(lines 10 13) no Hoare annotation was computed. [2019-10-14 23:52:28,966 INFO L439 ceAbstractionStarter]: At program point L10-3(lines 10 13) the Hoare annotation is: false [2019-10-14 23:52:28,966 INFO L443 ceAbstractionStarter]: For program point L10-4(lines 10 13) no Hoare annotation was computed. [2019-10-14 23:52:28,966 INFO L443 ceAbstractionStarter]: For program point L2-1(line 2) no Hoare annotation was computed. [2019-10-14 23:52:28,966 INFO L443 ceAbstractionStarter]: For program point L2-3(line 2) no Hoare annotation was computed. [2019-10-14 23:52:28,966 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(line 2) the Hoare annotation is: true [2019-10-14 23:52:28,966 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(line 2) no Hoare annotation was computed. [2019-10-14 23:52:28,967 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 2) no Hoare annotation was computed. [2019-10-14 23:52:28,967 INFO L443 ceAbstractionStarter]: For program point L2(line 2) no Hoare annotation was computed. [2019-10-14 23:52:28,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 11:52:28 BoogieIcfgContainer [2019-10-14 23:52:28,984 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-14 23:52:28,986 INFO L168 Benchmark]: Toolchain (without parser) took 2580.24 ms. Allocated memory was 145.2 MB in the beginning and 235.4 MB in the end (delta: 90.2 MB). Free memory was 103.2 MB in the beginning and 180.0 MB in the end (delta: -76.8 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. [2019-10-14 23:52:28,987 INFO L168 Benchmark]: CDTParser took 1.22 ms. Allocated memory is still 145.2 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-14 23:52:28,988 INFO L168 Benchmark]: CACSL2BoogieTranslator took 282.55 ms. Allocated memory is still 145.2 MB. Free memory was 103.0 MB in the beginning and 93.0 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2019-10-14 23:52:28,992 INFO L168 Benchmark]: Boogie Preprocessor took 123.25 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 93.0 MB in the beginning and 179.9 MB in the end (delta: -86.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2019-10-14 23:52:28,993 INFO L168 Benchmark]: RCFGBuilder took 411.64 ms. Allocated memory is still 202.4 MB. Free memory was 179.9 MB in the beginning and 163.8 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 7.1 GB. [2019-10-14 23:52:28,996 INFO L168 Benchmark]: TraceAbstraction took 1752.13 ms. Allocated memory was 202.4 MB in the beginning and 235.4 MB in the end (delta: 33.0 MB). Free memory was 163.1 MB in the beginning and 180.0 MB in the end (delta: -16.8 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. [2019-10-14 23:52:29,002 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.22 ms. Allocated memory is still 145.2 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 282.55 ms. Allocated memory is still 145.2 MB. Free memory was 103.0 MB in the beginning and 93.0 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 123.25 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 93.0 MB in the beginning and 179.9 MB in the end (delta: -86.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 411.64 ms. Allocated memory is still 202.4 MB. Free memory was 179.9 MB in the beginning and 163.8 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1752.13 ms. Allocated memory was 202.4 MB in the beginning and 235.4 MB in the end (delta: 33.0 MB). Free memory was 163.1 MB in the beginning and 180.0 MB in the end (delta: -16.8 MB). Peak memory consumption was 16.2 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: 10]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 32 locations, 1 error locations. Result: SAFE, OverallTime: 1.6s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 116 SDtfs, 26 SDslu, 99 SDs, 0 SdLazy, 107 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred 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, 5 MinimizatonAttempts, 16 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 13 PreInvPairs, 13 NumberOfFragments, 9 HoareAnnotationTreeSize, 13 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 138 NumberOfCodeBlocks, 138 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 158 ConstructedInterpolants, 0 QuantifiedInterpolants, 6036 SizeOfPredicates, 1 NumberOfNonLiveVariables, 92 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 12/15 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: TIME[ms]: 151, ITERATIONS: 1, WAS_STRONG: 1, WEAKENING_RATIO: 0.9519230769230769, AVG_VARS_REMOVED_DURING_WEAKENING: 0.9230769230769231, AVG_WEAKENED_CONJUNCTS: 0.23076923076923078, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...