./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/loop-invgen/string_concat-noarr_true-unreach-call_false-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2e94e6aa Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/svcomp/c/loop-invgen/string_concat-noarr_true-unreach-call_false-termination.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9f3cf63c7adaf3e2c576343bf7deb0d4236e103c ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-2e94e6a [2018-12-31 06:09:39,152 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-31 06:09:39,154 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-31 06:09:39,169 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-31 06:09:39,169 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-31 06:09:39,170 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-31 06:09:39,172 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-31 06:09:39,173 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-31 06:09:39,175 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-31 06:09:39,176 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-31 06:09:39,177 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-31 06:09:39,177 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-31 06:09:39,178 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-31 06:09:39,179 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-31 06:09:39,180 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-31 06:09:39,181 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-31 06:09:39,182 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-31 06:09:39,183 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-31 06:09:39,185 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-31 06:09:39,187 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-31 06:09:39,188 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-31 06:09:39,189 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-31 06:09:39,192 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-31 06:09:39,192 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-31 06:09:39,193 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-31 06:09:39,195 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-31 06:09:39,196 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-31 06:09:39,197 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-31 06:09:39,198 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-31 06:09:39,200 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-31 06:09:39,200 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-31 06:09:39,201 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-31 06:09:39,201 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-31 06:09:39,201 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-31 06:09:39,203 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-31 06:09:39,203 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-31 06:09:39,203 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-12-31 06:09:39,224 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-31 06:09:39,225 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-31 06:09:39,226 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-31 06:09:39,226 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-31 06:09:39,226 INFO L133 SettingsManager]: * Use SBE=true [2018-12-31 06:09:39,226 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-31 06:09:39,226 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-31 06:09:39,227 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-31 06:09:39,227 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-31 06:09:39,227 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-31 06:09:39,227 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-31 06:09:39,227 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-31 06:09:39,227 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-31 06:09:39,228 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-31 06:09:39,228 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-31 06:09:39,228 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-31 06:09:39,228 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-31 06:09:39,228 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-31 06:09:39,228 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-31 06:09:39,229 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-31 06:09:39,229 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-31 06:09:39,229 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-31 06:09:39,229 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-31 06:09:39,229 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-31 06:09:39,230 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-31 06:09:39,230 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-31 06:09:39,230 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-31 06:09:39,230 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-31 06:09:39,230 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9f3cf63c7adaf3e2c576343bf7deb0d4236e103c [2018-12-31 06:09:39,264 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-31 06:09:39,280 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-31 06:09:39,283 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-31 06:09:39,285 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-31 06:09:39,285 INFO L276 PluginConnector]: CDTParser initialized [2018-12-31 06:09:39,286 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/loop-invgen/string_concat-noarr_true-unreach-call_false-termination.i [2018-12-31 06:09:39,342 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38daf94ab/4e240da0854541008b953ffb2c75c27a/FLAGc7edc7ba1 [2018-12-31 06:09:39,762 INFO L307 CDTParser]: Found 1 translation units. [2018-12-31 06:09:39,763 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/loop-invgen/string_concat-noarr_true-unreach-call_false-termination.i [2018-12-31 06:09:39,769 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38daf94ab/4e240da0854541008b953ffb2c75c27a/FLAGc7edc7ba1 [2018-12-31 06:09:40,159 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38daf94ab/4e240da0854541008b953ffb2c75c27a [2018-12-31 06:09:40,163 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-31 06:09:40,165 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-31 06:09:40,166 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-31 06:09:40,166 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-31 06:09:40,169 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-31 06:09:40,170 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.12 06:09:40" (1/1) ... [2018-12-31 06:09:40,173 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a5801be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 06:09:40, skipping insertion in model container [2018-12-31 06:09:40,174 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.12 06:09:40" (1/1) ... [2018-12-31 06:09:40,182 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-31 06:09:40,199 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-31 06:09:40,363 INFO L204 PostProcessor]: Analyzing one entry point: main [2018-12-31 06:09:40,367 INFO L191 MainTranslator]: Completed pre-run [2018-12-31 06:09:40,385 INFO L204 PostProcessor]: Analyzing one entry point: main [2018-12-31 06:09:40,401 INFO L195 MainTranslator]: Completed translation [2018-12-31 06:09:40,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 06:09:40 WrapperNode [2018-12-31 06:09:40,401 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-31 06:09:40,402 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-31 06:09:40,402 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-31 06:09:40,402 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-31 06:09:40,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 06:09:40" (1/1) ... [2018-12-31 06:09:40,415 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 06:09:40" (1/1) ... [2018-12-31 06:09:40,433 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-31 06:09:40,434 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-31 06:09:40,434 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-31 06:09:40,434 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-31 06:09:40,444 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 06:09:40" (1/1) ... [2018-12-31 06:09:40,444 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 06:09:40" (1/1) ... [2018-12-31 06:09:40,445 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 06:09:40" (1/1) ... [2018-12-31 06:09:40,445 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 06:09:40" (1/1) ... [2018-12-31 06:09:40,447 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 06:09:40" (1/1) ... [2018-12-31 06:09:40,452 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 06:09:40" (1/1) ... [2018-12-31 06:09:40,453 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 06:09:40" (1/1) ... [2018-12-31 06:09:40,455 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-31 06:09:40,455 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-31 06:09:40,455 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-31 06:09:40,455 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-31 06:09:40,456 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 06:09:40" (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 [2018-12-31 06:09:40,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-31 06:09:40,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-31 06:09:40,805 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-31 06:09:40,807 INFO L280 CfgBuilder]: Removed 8 assue(true) statements. [2018-12-31 06:09:40,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 06:09:40 BoogieIcfgContainer [2018-12-31 06:09:40,807 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-31 06:09:40,808 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-31 06:09:40,808 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-31 06:09:40,811 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-31 06:09:40,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.12 06:09:40" (1/3) ... [2018-12-31 06:09:40,812 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28cac476 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.12 06:09:40, skipping insertion in model container [2018-12-31 06:09:40,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 06:09:40" (2/3) ... [2018-12-31 06:09:40,813 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28cac476 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.12 06:09:40, skipping insertion in model container [2018-12-31 06:09:40,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 06:09:40" (3/3) ... [2018-12-31 06:09:40,815 INFO L112 eAbstractionObserver]: Analyzing ICFG string_concat-noarr_true-unreach-call_false-termination.i [2018-12-31 06:09:40,825 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-31 06:09:40,833 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-31 06:09:40,850 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-31 06:09:40,880 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-31 06:09:40,881 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-31 06:09:40,881 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-31 06:09:40,882 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-31 06:09:40,882 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-31 06:09:40,882 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-31 06:09:40,882 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-31 06:09:40,882 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-31 06:09:40,882 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-31 06:09:40,898 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2018-12-31 06:09:40,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-12-31 06:09:40,905 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 06:09:40,906 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 06:09:40,908 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 06:09:40,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 06:09:40,915 INFO L82 PathProgramCache]: Analyzing trace with hash -1246292942, now seen corresponding path program 1 times [2018-12-31 06:09:40,917 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 06:09:40,918 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 06:09:40,961 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 06:09:40,961 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 06:09:40,961 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 06:09:40,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 06:09:41,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 06:09:41,016 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-31 06:09:41,016 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-31 06:09:41,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-31 06:09:41,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-31 06:09:41,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-31 06:09:41,035 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 2 states. [2018-12-31 06:09:41,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 06:09:41,051 INFO L93 Difference]: Finished difference Result 28 states and 38 transitions. [2018-12-31 06:09:41,051 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-31 06:09:41,052 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2018-12-31 06:09:41,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 06:09:41,061 INFO L225 Difference]: With dead ends: 28 [2018-12-31 06:09:41,061 INFO L226 Difference]: Without dead ends: 11 [2018-12-31 06:09:41,064 INFO L631 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 [2018-12-31 06:09:41,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-12-31 06:09:41,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-12-31 06:09:41,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-12-31 06:09:41,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2018-12-31 06:09:41,098 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 8 [2018-12-31 06:09:41,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 06:09:41,098 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2018-12-31 06:09:41,098 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-31 06:09:41,098 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2018-12-31 06:09:41,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-31 06:09:41,099 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 06:09:41,099 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 06:09:41,100 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 06:09:41,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 06:09:41,100 INFO L82 PathProgramCache]: Analyzing trace with hash -234964329, now seen corresponding path program 1 times [2018-12-31 06:09:41,100 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 06:09:41,100 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 06:09:41,101 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 06:09:41,101 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 06:09:41,102 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 06:09:41,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 06:09:41,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 06:09:41,318 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-31 06:09:41,318 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-31 06:09:41,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-31 06:09:41,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-31 06:09:41,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-31 06:09:41,321 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand 4 states. [2018-12-31 06:09:41,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 06:09:41,531 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2018-12-31 06:09:41,532 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-31 06:09:41,532 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2018-12-31 06:09:41,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 06:09:41,533 INFO L225 Difference]: With dead ends: 20 [2018-12-31 06:09:41,533 INFO L226 Difference]: Without dead ends: 16 [2018-12-31 06:09:41,534 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-31 06:09:41,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-12-31 06:09:41,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-12-31 06:09:41,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-12-31 06:09:41,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2018-12-31 06:09:41,539 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 10 [2018-12-31 06:09:41,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 06:09:41,540 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2018-12-31 06:09:41,540 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-31 06:09:41,540 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2018-12-31 06:09:41,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-12-31 06:09:41,541 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 06:09:41,541 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 06:09:41,542 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 06:09:41,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 06:09:41,543 INFO L82 PathProgramCache]: Analyzing trace with hash 1877408338, now seen corresponding path program 1 times [2018-12-31 06:09:41,543 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 06:09:41,543 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 06:09:41,544 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 06:09:41,545 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 06:09:41,545 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 06:09:41,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 06:09:41,625 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 06:09:41,628 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 06:09:41,628 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-31 06:09:41,640 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 06:09:41,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 06:09:41,673 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 06:09:41,783 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 06:09:41,803 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-31 06:09:41,803 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2018-12-31 06:09:41,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-31 06:09:41,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-31 06:09:41,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-12-31 06:09:41,804 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 7 states. [2018-12-31 06:09:42,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 06:09:42,274 INFO L93 Difference]: Finished difference Result 39 states and 46 transitions. [2018-12-31 06:09:42,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-31 06:09:42,276 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2018-12-31 06:09:42,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 06:09:42,279 INFO L225 Difference]: With dead ends: 39 [2018-12-31 06:09:42,279 INFO L226 Difference]: Without dead ends: 31 [2018-12-31 06:09:42,280 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2018-12-31 06:09:42,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-12-31 06:09:42,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 25. [2018-12-31 06:09:42,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-12-31 06:09:42,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2018-12-31 06:09:42,292 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 12 [2018-12-31 06:09:42,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 06:09:42,293 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2018-12-31 06:09:42,293 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-31 06:09:42,293 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2018-12-31 06:09:42,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-12-31 06:09:42,297 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 06:09:42,297 INFO L402 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 06:09:42,297 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 06:09:42,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 06:09:42,299 INFO L82 PathProgramCache]: Analyzing trace with hash -1654363901, now seen corresponding path program 2 times [2018-12-31 06:09:42,299 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 06:09:42,299 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 06:09:42,300 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 06:09:42,300 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 06:09:42,300 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 06:09:42,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 06:09:42,481 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 06:09:42,482 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 06:09:42,482 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-31 06:09:42,493 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-31 06:09:42,517 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-31 06:09:42,518 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-31 06:09:42,520 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 06:09:42,761 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 06:09:42,780 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-31 06:09:42,780 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2018-12-31 06:09:42,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-12-31 06:09:42,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-12-31 06:09:42,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2018-12-31 06:09:42,782 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 13 states. [2018-12-31 06:09:43,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 06:09:43,741 INFO L93 Difference]: Finished difference Result 87 states and 103 transitions. [2018-12-31 06:09:43,742 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-12-31 06:09:43,742 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 18 [2018-12-31 06:09:43,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 06:09:43,745 INFO L225 Difference]: With dead ends: 87 [2018-12-31 06:09:43,745 INFO L226 Difference]: Without dead ends: 73 [2018-12-31 06:09:43,746 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=122, Invalid=220, Unknown=0, NotChecked=0, Total=342 [2018-12-31 06:09:43,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-12-31 06:09:43,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 46. [2018-12-31 06:09:43,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-12-31 06:09:43,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 52 transitions. [2018-12-31 06:09:43,754 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 52 transitions. Word has length 18 [2018-12-31 06:09:43,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 06:09:43,754 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 52 transitions. [2018-12-31 06:09:43,754 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-12-31 06:09:43,754 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 52 transitions. [2018-12-31 06:09:43,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-12-31 06:09:43,755 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 06:09:43,756 INFO L402 BasicCegarLoop]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 06:09:43,756 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 06:09:43,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 06:09:43,756 INFO L82 PathProgramCache]: Analyzing trace with hash -1993982939, now seen corresponding path program 3 times [2018-12-31 06:09:43,757 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 06:09:43,757 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 06:09:43,758 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 06:09:43,758 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-31 06:09:43,758 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 06:09:43,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 06:09:44,027 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 06:09:44,028 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 06:09:44,028 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-31 06:09:44,042 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-31 06:09:44,100 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2018-12-31 06:09:44,100 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-31 06:09:44,104 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 06:09:44,556 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 06:09:44,580 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-31 06:09:44,581 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 25 [2018-12-31 06:09:44,581 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-12-31 06:09:44,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-12-31 06:09:44,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2018-12-31 06:09:44,583 INFO L87 Difference]: Start difference. First operand 46 states and 52 transitions. Second operand 25 states. [2018-12-31 06:09:45,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 06:09:45,200 INFO L93 Difference]: Finished difference Result 207 states and 241 transitions. [2018-12-31 06:09:45,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-12-31 06:09:45,201 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 30 [2018-12-31 06:09:45,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 06:09:45,204 INFO L225 Difference]: With dead ends: 207 [2018-12-31 06:09:45,205 INFO L226 Difference]: Without dead ends: 181 [2018-12-31 06:09:45,206 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=458, Invalid=874, Unknown=0, NotChecked=0, Total=1332 [2018-12-31 06:09:45,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2018-12-31 06:09:45,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 88. [2018-12-31 06:09:45,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2018-12-31 06:09:45,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 100 transitions. [2018-12-31 06:09:45,217 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 100 transitions. Word has length 30 [2018-12-31 06:09:45,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 06:09:45,217 INFO L480 AbstractCegarLoop]: Abstraction has 88 states and 100 transitions. [2018-12-31 06:09:45,217 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-12-31 06:09:45,217 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 100 transitions. [2018-12-31 06:09:45,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-12-31 06:09:45,219 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 06:09:45,219 INFO L402 BasicCegarLoop]: trace histogram [23, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 06:09:45,220 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 06:09:45,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 06:09:45,220 INFO L82 PathProgramCache]: Analyzing trace with hash -573736599, now seen corresponding path program 4 times [2018-12-31 06:09:45,220 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 06:09:45,220 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 06:09:45,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 06:09:45,221 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-31 06:09:45,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 06:09:45,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 06:09:45,917 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 06:09:45,917 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 06:09:45,917 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-31 06:09:45,937 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-31 06:09:46,008 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-31 06:09:46,008 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-31 06:09:46,014 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 06:09:47,168 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 06:09:47,186 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-31 06:09:47,187 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 49 [2018-12-31 06:09:47,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-12-31 06:09:47,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-12-31 06:09:47,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1130, Invalid=1222, Unknown=0, NotChecked=0, Total=2352 [2018-12-31 06:09:47,192 INFO L87 Difference]: Start difference. First operand 88 states and 100 transitions. Second operand 49 states. [2018-12-31 06:09:48,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 06:09:48,962 INFO L93 Difference]: Finished difference Result 555 states and 625 transitions. [2018-12-31 06:09:48,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-12-31 06:09:48,964 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 54 [2018-12-31 06:09:48,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 06:09:48,969 INFO L225 Difference]: With dead ends: 555 [2018-12-31 06:09:48,969 INFO L226 Difference]: Without dead ends: 505 [2018-12-31 06:09:48,972 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 343 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1778, Invalid=3478, Unknown=0, NotChecked=0, Total=5256 [2018-12-31 06:09:48,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2018-12-31 06:09:48,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 172. [2018-12-31 06:09:48,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2018-12-31 06:09:48,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 196 transitions. [2018-12-31 06:09:48,995 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 196 transitions. Word has length 54 [2018-12-31 06:09:48,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 06:09:48,995 INFO L480 AbstractCegarLoop]: Abstraction has 172 states and 196 transitions. [2018-12-31 06:09:48,995 INFO L481 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-12-31 06:09:48,996 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 196 transitions. [2018-12-31 06:09:49,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-12-31 06:09:49,004 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 06:09:49,005 INFO L402 BasicCegarLoop]: trace histogram [47, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 06:09:49,005 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 06:09:49,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 06:09:49,005 INFO L82 PathProgramCache]: Analyzing trace with hash -2121773071, now seen corresponding path program 5 times [2018-12-31 06:09:49,006 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 06:09:49,006 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 06:09:49,008 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 06:09:49,008 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-31 06:09:49,008 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 06:09:49,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 06:09:50,512 INFO L134 CoverageAnalysis]: Checked inductivity of 2162 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 06:09:50,512 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 06:09:50,512 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-31 06:09:50,523 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-12-31 06:09:50,863 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2018-12-31 06:09:50,863 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-31 06:09:50,870 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 06:09:53,717 INFO L134 CoverageAnalysis]: Checked inductivity of 2162 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 06:09:53,737 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-31 06:09:53,737 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 97 [2018-12-31 06:09:53,738 INFO L459 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-12-31 06:09:53,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-12-31 06:09:53,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4562, Invalid=4750, Unknown=0, NotChecked=0, Total=9312 [2018-12-31 06:09:53,742 INFO L87 Difference]: Start difference. First operand 172 states and 196 transitions. Second operand 97 states. [2018-12-31 06:09:58,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 06:09:58,662 INFO L93 Difference]: Finished difference Result 1683 states and 1825 transitions. [2018-12-31 06:09:58,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2018-12-31 06:09:58,663 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 102 [2018-12-31 06:09:58,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 06:09:58,672 INFO L225 Difference]: With dead ends: 1683 [2018-12-31 06:09:58,673 INFO L226 Difference]: Without dead ends: 1585 [2018-12-31 06:09:58,679 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1267 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=7010, Invalid=13870, Unknown=0, NotChecked=0, Total=20880 [2018-12-31 06:09:58,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1585 states. [2018-12-31 06:09:58,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1585 to 340. [2018-12-31 06:09:58,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2018-12-31 06:09:58,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 388 transitions. [2018-12-31 06:09:58,709 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 388 transitions. Word has length 102 [2018-12-31 06:09:58,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 06:09:58,710 INFO L480 AbstractCegarLoop]: Abstraction has 340 states and 388 transitions. [2018-12-31 06:09:58,710 INFO L481 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-12-31 06:09:58,710 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 388 transitions. [2018-12-31 06:09:58,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-12-31 06:09:58,714 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 06:09:58,715 INFO L402 BasicCegarLoop]: trace histogram [95, 94, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 06:09:58,715 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 06:09:58,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 06:09:58,715 INFO L82 PathProgramCache]: Analyzing trace with hash -1147179775, now seen corresponding path program 6 times [2018-12-31 06:09:58,716 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 06:09:58,716 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 06:09:58,716 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 06:09:58,717 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-31 06:09:58,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 06:09:58,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 06:10:02,431 INFO L134 CoverageAnalysis]: Checked inductivity of 8930 backedges. 0 proven. 8930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 06:10:02,431 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 06:10:02,431 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-31 06:10:02,441 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-12-31 06:10:02,818 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) [2018-12-31 06:10:02,818 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-31 06:10:02,831 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 06:10:13,076 INFO L134 CoverageAnalysis]: Checked inductivity of 8930 backedges. 0 proven. 8930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 06:10:13,096 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-31 06:10:13,096 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98] total 193 [2018-12-31 06:10:13,097 INFO L459 AbstractCegarLoop]: Interpolant automaton has 193 states [2018-12-31 06:10:13,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2018-12-31 06:10:13,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18338, Invalid=18718, Unknown=0, NotChecked=0, Total=37056 [2018-12-31 06:10:13,107 INFO L87 Difference]: Start difference. First operand 340 states and 388 transitions. Second operand 193 states. [2018-12-31 06:10:47,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 06:10:47,292 INFO L93 Difference]: Finished difference Result 5667 states and 5953 transitions. [2018-12-31 06:10:47,293 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 288 states. [2018-12-31 06:10:47,293 INFO L78 Accepts]: Start accepts. Automaton has 193 states. Word has length 198 [2018-12-31 06:10:47,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 06:10:47,316 INFO L225 Difference]: With dead ends: 5667 [2018-12-31 06:10:47,316 INFO L226 Difference]: Without dead ends: 5473 [2018-12-31 06:10:47,323 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 103 SyntacticMatches, 1 SemanticMatches, 287 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4843 ImplicationChecksByTransitivity, 23.5s TimeCoverageRelationStatistics Valid=27842, Invalid=55390, Unknown=0, NotChecked=0, Total=83232 [2018-12-31 06:10:47,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5473 states. [2018-12-31 06:10:47,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5473 to 676. [2018-12-31 06:10:47,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 676 states. [2018-12-31 06:10:47,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 676 states to 676 states and 772 transitions. [2018-12-31 06:10:47,379 INFO L78 Accepts]: Start accepts. Automaton has 676 states and 772 transitions. Word has length 198 [2018-12-31 06:10:47,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 06:10:47,380 INFO L480 AbstractCegarLoop]: Abstraction has 676 states and 772 transitions. [2018-12-31 06:10:47,380 INFO L481 AbstractCegarLoop]: Interpolant automaton has 193 states. [2018-12-31 06:10:47,380 INFO L276 IsEmpty]: Start isEmpty. Operand 676 states and 772 transitions. [2018-12-31 06:10:47,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2018-12-31 06:10:47,397 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 06:10:47,398 INFO L402 BasicCegarLoop]: trace histogram [191, 190, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 06:10:47,398 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 06:10:47,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 06:10:47,398 INFO L82 PathProgramCache]: Analyzing trace with hash -506239199, now seen corresponding path program 7 times [2018-12-31 06:10:47,398 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 06:10:47,399 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 06:10:47,399 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 06:10:47,399 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-31 06:10:47,400 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 06:10:47,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 06:11:01,957 INFO L134 CoverageAnalysis]: Checked inductivity of 36290 backedges. 36290 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 06:11:01,958 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-31 06:11:01,958 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [193] imperfect sequences [] total 193 [2018-12-31 06:11:01,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 193 states [2018-12-31 06:11:01,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2018-12-31 06:11:01,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2018-12-31 06:11:01,964 INFO L87 Difference]: Start difference. First operand 676 states and 772 transitions. Second operand 193 states. [2018-12-31 06:11:03,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 06:11:03,960 INFO L93 Difference]: Finished difference Result 27956 states and 28142 transitions. [2018-12-31 06:11:03,961 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2018-12-31 06:11:03,961 INFO L78 Accepts]: Start accepts. Automaton has 193 states. Word has length 390 [2018-12-31 06:11:03,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 06:11:03,967 INFO L225 Difference]: With dead ends: 27956 [2018-12-31 06:11:03,967 INFO L226 Difference]: Without dead ends: 1199 [2018-12-31 06:11:03,989 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.5s TimeCoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2018-12-31 06:11:03,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1199 states. [2018-12-31 06:11:04,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1199 to 1183. [2018-12-31 06:11:04,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1183 states. [2018-12-31 06:11:04,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1183 states to 1183 states and 1191 transitions. [2018-12-31 06:11:04,015 INFO L78 Accepts]: Start accepts. Automaton has 1183 states and 1191 transitions. Word has length 390 [2018-12-31 06:11:04,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 06:11:04,015 INFO L480 AbstractCegarLoop]: Abstraction has 1183 states and 1191 transitions. [2018-12-31 06:11:04,015 INFO L481 AbstractCegarLoop]: Interpolant automaton has 193 states. [2018-12-31 06:11:04,015 INFO L276 IsEmpty]: Start isEmpty. Operand 1183 states and 1191 transitions. [2018-12-31 06:11:04,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2018-12-31 06:11:04,023 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 06:11:04,024 INFO L402 BasicCegarLoop]: trace histogram [100, 99, 92, 91, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 06:11:04,024 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 06:11:04,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 06:11:04,024 INFO L82 PathProgramCache]: Analyzing trace with hash 1809212719, now seen corresponding path program 1 times [2018-12-31 06:11:04,025 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 06:11:04,025 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 06:11:04,026 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 06:11:04,027 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 06:11:04,027 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 06:11:04,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 06:11:18,469 INFO L134 CoverageAnalysis]: Checked inductivity of 18272 backedges. 0 proven. 18272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 06:11:18,469 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 06:11:18,470 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-31 06:11:18,479 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 06:11:18,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 06:11:18,694 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 06:11:19,032 INFO L134 CoverageAnalysis]: Checked inductivity of 18272 backedges. 0 proven. 18272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 06:11:19,051 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-31 06:11:19,052 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [194, 194] total 194 [2018-12-31 06:11:19,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 194 states [2018-12-31 06:11:19,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 194 interpolants. [2018-12-31 06:11:19,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18530, Invalid=18912, Unknown=0, NotChecked=0, Total=37442 [2018-12-31 06:11:19,058 INFO L87 Difference]: Start difference. First operand 1183 states and 1191 transitions. Second operand 194 states. [2018-12-31 06:11:34,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 06:11:34,074 INFO L93 Difference]: Finished difference Result 2239 states and 2346 transitions. [2018-12-31 06:11:34,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 194 states. [2018-12-31 06:11:34,074 INFO L78 Accepts]: Start accepts. Automaton has 194 states. Word has length 390 [2018-12-31 06:11:34,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 06:11:34,082 INFO L225 Difference]: With dead ends: 2239 [2018-12-31 06:11:34,083 INFO L226 Difference]: Without dead ends: 2034 [2018-12-31 06:11:34,085 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 584 GetRequests, 390 SyntacticMatches, 1 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 14.0s TimeCoverageRelationStatistics Valid=18534, Invalid=19296, Unknown=0, NotChecked=0, Total=37830 [2018-12-31 06:11:34,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2034 states. [2018-12-31 06:11:34,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2034 to 1185. [2018-12-31 06:11:34,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1185 states. [2018-12-31 06:11:34,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1185 states to 1185 states and 1193 transitions. [2018-12-31 06:11:34,107 INFO L78 Accepts]: Start accepts. Automaton has 1185 states and 1193 transitions. Word has length 390 [2018-12-31 06:11:34,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 06:11:34,108 INFO L480 AbstractCegarLoop]: Abstraction has 1185 states and 1193 transitions. [2018-12-31 06:11:34,108 INFO L481 AbstractCegarLoop]: Interpolant automaton has 194 states. [2018-12-31 06:11:34,108 INFO L276 IsEmpty]: Start isEmpty. Operand 1185 states and 1193 transitions. [2018-12-31 06:11:34,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2018-12-31 06:11:34,116 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 06:11:34,117 INFO L402 BasicCegarLoop]: trace histogram [100, 99, 93, 92, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 06:11:34,117 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 06:11:34,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 06:11:34,117 INFO L82 PathProgramCache]: Analyzing trace with hash 744709876, now seen corresponding path program 2 times [2018-12-31 06:11:34,117 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 06:11:34,119 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 06:11:34,120 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 06:11:34,121 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 06:11:34,121 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 06:11:34,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 06:11:47,852 INFO L134 CoverageAnalysis]: Checked inductivity of 18456 backedges. 0 proven. 18456 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 06:11:47,852 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 06:11:47,853 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-31 06:11:47,870 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-31 06:11:48,066 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-31 06:11:48,066 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-31 06:11:48,083 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 06:11:48,429 INFO L134 CoverageAnalysis]: Checked inductivity of 18456 backedges. 0 proven. 18456 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 06:11:48,458 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-31 06:11:48,459 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [195, 195] total 195 [2018-12-31 06:11:48,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 195 states [2018-12-31 06:11:48,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 195 interpolants. [2018-12-31 06:11:48,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18723, Invalid=19107, Unknown=0, NotChecked=0, Total=37830 [2018-12-31 06:11:48,466 INFO L87 Difference]: Start difference. First operand 1185 states and 1193 transitions. Second operand 195 states. [2018-12-31 06:12:00,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 06:12:00,856 INFO L93 Difference]: Finished difference Result 2055 states and 2162 transitions. [2018-12-31 06:12:00,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 195 states. [2018-12-31 06:12:00,857 INFO L78 Accepts]: Start accepts. Automaton has 195 states. Word has length 392 [2018-12-31 06:12:00,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 06:12:00,863 INFO L225 Difference]: With dead ends: 2055 [2018-12-31 06:12:00,863 INFO L226 Difference]: Without dead ends: 1850 [2018-12-31 06:12:00,865 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 587 GetRequests, 392 SyntacticMatches, 1 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 13.4s TimeCoverageRelationStatistics Valid=18727, Invalid=19493, Unknown=0, NotChecked=0, Total=38220 [2018-12-31 06:12:00,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1850 states. [2018-12-31 06:12:00,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1850 to 1187. [2018-12-31 06:12:00,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1187 states. [2018-12-31 06:12:00,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1187 states to 1187 states and 1195 transitions. [2018-12-31 06:12:00,884 INFO L78 Accepts]: Start accepts. Automaton has 1187 states and 1195 transitions. Word has length 392 [2018-12-31 06:12:00,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 06:12:00,885 INFO L480 AbstractCegarLoop]: Abstraction has 1187 states and 1195 transitions. [2018-12-31 06:12:00,885 INFO L481 AbstractCegarLoop]: Interpolant automaton has 195 states. [2018-12-31 06:12:00,885 INFO L276 IsEmpty]: Start isEmpty. Operand 1187 states and 1195 transitions. [2018-12-31 06:12:00,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2018-12-31 06:12:00,888 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 06:12:00,888 INFO L402 BasicCegarLoop]: trace histogram [100, 99, 94, 93, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 06:12:00,889 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 06:12:00,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 06:12:00,889 INFO L82 PathProgramCache]: Analyzing trace with hash -40305799, now seen corresponding path program 3 times [2018-12-31 06:12:00,889 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 06:12:00,889 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 06:12:00,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 06:12:00,890 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-31 06:12:00,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 06:12:01,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 06:12:14,255 INFO L134 CoverageAnalysis]: Checked inductivity of 18642 backedges. 0 proven. 18642 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 06:12:14,256 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 06:12:14,256 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-31 06:12:14,275 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-31 06:12:14,769 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 100 check-sat command(s) [2018-12-31 06:12:14,769 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-31 06:12:14,783 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 06:12:15,140 INFO L134 CoverageAnalysis]: Checked inductivity of 18642 backedges. 0 proven. 18642 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 06:12:15,160 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-31 06:12:15,160 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [196, 196] total 196 [2018-12-31 06:12:15,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 196 states [2018-12-31 06:12:15,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 196 interpolants. [2018-12-31 06:12:15,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18917, Invalid=19303, Unknown=0, NotChecked=0, Total=38220 [2018-12-31 06:12:15,164 INFO L87 Difference]: Start difference. First operand 1187 states and 1195 transitions. Second operand 196 states. [2018-12-31 06:12:27,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 06:12:27,578 INFO L93 Difference]: Finished difference Result 1869 states and 1976 transitions. [2018-12-31 06:12:27,578 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 196 states. [2018-12-31 06:12:27,578 INFO L78 Accepts]: Start accepts. Automaton has 196 states. Word has length 394 [2018-12-31 06:12:27,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 06:12:27,584 INFO L225 Difference]: With dead ends: 1869 [2018-12-31 06:12:27,584 INFO L226 Difference]: Without dead ends: 1664 [2018-12-31 06:12:27,586 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 590 GetRequests, 394 SyntacticMatches, 1 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 13.1s TimeCoverageRelationStatistics Valid=18921, Invalid=19691, Unknown=0, NotChecked=0, Total=38612 [2018-12-31 06:12:27,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1664 states. [2018-12-31 06:12:27,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1664 to 1189. [2018-12-31 06:12:27,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1189 states. [2018-12-31 06:12:27,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1189 states to 1189 states and 1197 transitions. [2018-12-31 06:12:27,604 INFO L78 Accepts]: Start accepts. Automaton has 1189 states and 1197 transitions. Word has length 394 [2018-12-31 06:12:27,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 06:12:27,604 INFO L480 AbstractCegarLoop]: Abstraction has 1189 states and 1197 transitions. [2018-12-31 06:12:27,604 INFO L481 AbstractCegarLoop]: Interpolant automaton has 196 states. [2018-12-31 06:12:27,604 INFO L276 IsEmpty]: Start isEmpty. Operand 1189 states and 1197 transitions. [2018-12-31 06:12:27,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2018-12-31 06:12:27,607 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 06:12:27,608 INFO L402 BasicCegarLoop]: trace histogram [100, 99, 95, 94, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 06:12:27,608 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 06:12:27,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 06:12:27,608 INFO L82 PathProgramCache]: Analyzing trace with hash 1473874622, now seen corresponding path program 4 times [2018-12-31 06:12:27,609 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 06:12:27,609 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 06:12:27,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 06:12:27,609 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-31 06:12:27,610 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 06:12:27,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 06:12:41,632 INFO L134 CoverageAnalysis]: Checked inductivity of 18830 backedges. 0 proven. 18830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 06:12:41,632 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 06:12:41,632 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-31 06:12:41,645 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-31 06:12:41,849 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-31 06:12:41,850 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-31 06:12:41,863 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 06:12:42,518 INFO L134 CoverageAnalysis]: Checked inductivity of 18830 backedges. 0 proven. 18830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 06:12:42,538 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-31 06:12:42,538 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [197, 197] total 197 [2018-12-31 06:12:42,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 197 states [2018-12-31 06:12:42,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 197 interpolants. [2018-12-31 06:12:42,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19112, Invalid=19500, Unknown=0, NotChecked=0, Total=38612 [2018-12-31 06:12:42,542 INFO L87 Difference]: Start difference. First operand 1189 states and 1197 transitions. Second operand 197 states. [2018-12-31 06:12:54,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 06:12:54,362 INFO L93 Difference]: Finished difference Result 1681 states and 1788 transitions. [2018-12-31 06:12:54,362 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 197 states. [2018-12-31 06:12:54,362 INFO L78 Accepts]: Start accepts. Automaton has 197 states. Word has length 396 [2018-12-31 06:12:54,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 06:12:54,368 INFO L225 Difference]: With dead ends: 1681 [2018-12-31 06:12:54,368 INFO L226 Difference]: Without dead ends: 1476 [2018-12-31 06:12:54,370 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 593 GetRequests, 396 SyntacticMatches, 1 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 386 ImplicationChecksByTransitivity, 14.1s TimeCoverageRelationStatistics Valid=19116, Invalid=19890, Unknown=0, NotChecked=0, Total=39006 [2018-12-31 06:12:54,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1476 states. [2018-12-31 06:12:54,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1476 to 1191. [2018-12-31 06:12:54,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1191 states. [2018-12-31 06:12:54,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1191 states to 1191 states and 1199 transitions. [2018-12-31 06:12:54,386 INFO L78 Accepts]: Start accepts. Automaton has 1191 states and 1199 transitions. Word has length 396 [2018-12-31 06:12:54,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 06:12:54,387 INFO L480 AbstractCegarLoop]: Abstraction has 1191 states and 1199 transitions. [2018-12-31 06:12:54,387 INFO L481 AbstractCegarLoop]: Interpolant automaton has 197 states. [2018-12-31 06:12:54,387 INFO L276 IsEmpty]: Start isEmpty. Operand 1191 states and 1199 transitions. [2018-12-31 06:12:54,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2018-12-31 06:12:54,390 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 06:12:54,390 INFO L402 BasicCegarLoop]: trace histogram [100, 99, 96, 95, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 06:12:54,390 INFO L423 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 06:12:54,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 06:12:54,391 INFO L82 PathProgramCache]: Analyzing trace with hash 607345859, now seen corresponding path program 5 times [2018-12-31 06:12:54,391 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 06:12:54,391 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 06:12:54,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 06:12:54,392 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-31 06:12:54,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 06:12:54,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 06:13:09,093 INFO L134 CoverageAnalysis]: Checked inductivity of 19020 backedges. 0 proven. 19020 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 06:13:09,093 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 06:13:09,093 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-31 06:13:09,102 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-12-31 06:13:09,515 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 100 check-sat command(s) [2018-12-31 06:13:09,515 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-31 06:13:09,528 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 06:13:10,533 INFO L134 CoverageAnalysis]: Checked inductivity of 19020 backedges. 0 proven. 19020 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 06:13:10,554 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-31 06:13:10,555 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [198, 198] total 198 [2018-12-31 06:13:10,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 198 states [2018-12-31 06:13:10,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 198 interpolants. [2018-12-31 06:13:10,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19308, Invalid=19698, Unknown=0, NotChecked=0, Total=39006 [2018-12-31 06:13:10,558 INFO L87 Difference]: Start difference. First operand 1191 states and 1199 transitions. Second operand 198 states. [2018-12-31 06:13:22,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 06:13:22,536 INFO L93 Difference]: Finished difference Result 1491 states and 1597 transitions. [2018-12-31 06:13:22,536 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 198 states. [2018-12-31 06:13:22,536 INFO L78 Accepts]: Start accepts. Automaton has 198 states. Word has length 398 [2018-12-31 06:13:22,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 06:13:22,542 INFO L225 Difference]: With dead ends: 1491 [2018-12-31 06:13:22,542 INFO L226 Difference]: Without dead ends: 1286 [2018-12-31 06:13:22,543 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 596 GetRequests, 398 SyntacticMatches, 1 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 388 ImplicationChecksByTransitivity, 15.2s TimeCoverageRelationStatistics Valid=19312, Invalid=20090, Unknown=0, NotChecked=0, Total=39402 [2018-12-31 06:13:22,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1286 states. [2018-12-31 06:13:22,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1286 to 998. [2018-12-31 06:13:22,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 998 states. [2018-12-31 06:13:22,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 998 states to 998 states and 1004 transitions. [2018-12-31 06:13:22,556 INFO L78 Accepts]: Start accepts. Automaton has 998 states and 1004 transitions. Word has length 398 [2018-12-31 06:13:22,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 06:13:22,557 INFO L480 AbstractCegarLoop]: Abstraction has 998 states and 1004 transitions. [2018-12-31 06:13:22,557 INFO L481 AbstractCegarLoop]: Interpolant automaton has 198 states. [2018-12-31 06:13:22,557 INFO L276 IsEmpty]: Start isEmpty. Operand 998 states and 1004 transitions. [2018-12-31 06:13:22,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2018-12-31 06:13:22,560 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 06:13:22,560 INFO L402 BasicCegarLoop]: trace histogram [100, 99, 97, 96, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 06:13:22,560 INFO L423 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 06:13:22,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 06:13:22,561 INFO L82 PathProgramCache]: Analyzing trace with hash 1096860040, now seen corresponding path program 6 times [2018-12-31 06:13:22,561 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 06:13:22,561 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 06:13:22,561 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 06:13:22,562 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-31 06:13:22,562 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 06:13:22,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 06:13:37,138 INFO L134 CoverageAnalysis]: Checked inductivity of 19212 backedges. 0 proven. 19212 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 06:13:37,138 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 06:13:37,138 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-31 06:13:37,147 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-12-31 06:13:37,577 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 100 check-sat command(s) [2018-12-31 06:13:37,577 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-31 06:13:37,591 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 06:13:37,926 INFO L134 CoverageAnalysis]: Checked inductivity of 19212 backedges. 0 proven. 19212 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 06:13:37,946 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-31 06:13:37,946 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [199, 199] total 199 [2018-12-31 06:13:37,947 INFO L459 AbstractCegarLoop]: Interpolant automaton has 199 states [2018-12-31 06:13:37,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 199 interpolants. [2018-12-31 06:13:37,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19505, Invalid=19897, Unknown=0, NotChecked=0, Total=39402 [2018-12-31 06:13:37,952 INFO L87 Difference]: Start difference. First operand 998 states and 1004 transitions. Second operand 199 states. [2018-12-31 06:13:51,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 06:13:51,611 INFO L93 Difference]: Finished difference Result 1299 states and 1403 transitions. [2018-12-31 06:13:51,611 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 199 states. [2018-12-31 06:13:51,611 INFO L78 Accepts]: Start accepts. Automaton has 199 states. Word has length 400 [2018-12-31 06:13:51,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 06:13:51,616 INFO L225 Difference]: With dead ends: 1299 [2018-12-31 06:13:51,616 INFO L226 Difference]: Without dead ends: 1094 [2018-12-31 06:13:51,618 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 599 GetRequests, 400 SyntacticMatches, 1 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 390 ImplicationChecksByTransitivity, 14.3s TimeCoverageRelationStatistics Valid=19509, Invalid=20291, Unknown=0, NotChecked=0, Total=39800 [2018-12-31 06:13:51,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1094 states. [2018-12-31 06:13:51,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1094 to 803. [2018-12-31 06:13:51,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2018-12-31 06:13:51,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 807 transitions. [2018-12-31 06:13:51,630 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 807 transitions. Word has length 400 [2018-12-31 06:13:51,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 06:13:51,630 INFO L480 AbstractCegarLoop]: Abstraction has 803 states and 807 transitions. [2018-12-31 06:13:51,631 INFO L481 AbstractCegarLoop]: Interpolant automaton has 199 states. [2018-12-31 06:13:51,631 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 807 transitions. [2018-12-31 06:13:51,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2018-12-31 06:13:51,633 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 06:13:51,633 INFO L402 BasicCegarLoop]: trace histogram [100, 99, 98, 97, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 06:13:51,634 INFO L423 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 06:13:51,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 06:13:51,634 INFO L82 PathProgramCache]: Analyzing trace with hash -926414579, now seen corresponding path program 7 times [2018-12-31 06:13:51,634 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 06:13:51,634 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 06:13:51,635 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 06:13:51,635 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-31 06:13:51,635 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 06:13:51,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 06:14:06,158 INFO L134 CoverageAnalysis]: Checked inductivity of 19406 backedges. 0 proven. 19406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 06:14:06,158 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 06:14:06,159 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-31 06:14:06,177 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 06:14:06,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 06:14:06,371 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 06:14:06,716 INFO L134 CoverageAnalysis]: Checked inductivity of 19406 backedges. 0 proven. 19406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 06:14:06,735 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-31 06:14:06,736 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [200, 200] total 200 [2018-12-31 06:14:06,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 200 states [2018-12-31 06:14:06,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 200 interpolants. [2018-12-31 06:14:06,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19703, Invalid=20097, Unknown=0, NotChecked=0, Total=39800 [2018-12-31 06:14:06,739 INFO L87 Difference]: Start difference. First operand 803 states and 807 transitions. Second operand 200 states. [2018-12-31 06:14:15,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 06:14:15,544 INFO L93 Difference]: Finished difference Result 1105 states and 1207 transitions. [2018-12-31 06:14:15,544 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 200 states. [2018-12-31 06:14:15,545 INFO L78 Accepts]: Start accepts. Automaton has 200 states. Word has length 402 [2018-12-31 06:14:15,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 06:14:15,549 INFO L225 Difference]: With dead ends: 1105 [2018-12-31 06:14:15,550 INFO L226 Difference]: Without dead ends: 900 [2018-12-31 06:14:15,551 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 602 GetRequests, 402 SyntacticMatches, 1 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 14.2s TimeCoverageRelationStatistics Valid=19707, Invalid=20493, Unknown=0, NotChecked=0, Total=40200 [2018-12-31 06:14:15,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 900 states. [2018-12-31 06:14:15,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 900 to 606. [2018-12-31 06:14:15,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 606 states. [2018-12-31 06:14:15,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 608 transitions. [2018-12-31 06:14:15,563 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 608 transitions. Word has length 402 [2018-12-31 06:14:15,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 06:14:15,563 INFO L480 AbstractCegarLoop]: Abstraction has 606 states and 608 transitions. [2018-12-31 06:14:15,563 INFO L481 AbstractCegarLoop]: Interpolant automaton has 200 states. [2018-12-31 06:14:15,563 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 608 transitions. [2018-12-31 06:14:15,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2018-12-31 06:14:15,567 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 06:14:15,567 INFO L402 BasicCegarLoop]: trace histogram [100, 99, 99, 98, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 06:14:15,567 INFO L423 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 06:14:15,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 06:14:15,567 INFO L82 PathProgramCache]: Analyzing trace with hash 326861650, now seen corresponding path program 8 times [2018-12-31 06:14:15,567 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 06:14:15,569 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 06:14:15,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 06:14:15,570 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 06:14:15,570 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 06:14:15,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 06:14:31,166 INFO L134 CoverageAnalysis]: Checked inductivity of 19602 backedges. 0 proven. 19602 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 06:14:31,166 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 06:14:31,166 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-31 06:14:31,176 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-31 06:14:31,374 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-31 06:14:31,374 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-31 06:14:31,387 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 06:14:31,885 INFO L134 CoverageAnalysis]: Checked inductivity of 19602 backedges. 0 proven. 19602 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 06:14:31,904 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-31 06:14:31,905 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [201, 201] total 201 [2018-12-31 06:14:31,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 201 states [2018-12-31 06:14:31,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 201 interpolants. [2018-12-31 06:14:31,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19902, Invalid=20298, Unknown=0, NotChecked=0, Total=40200 [2018-12-31 06:14:31,908 INFO L87 Difference]: Start difference. First operand 606 states and 608 transitions. Second operand 201 states. [2018-12-31 06:14:44,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 06:14:44,355 INFO L93 Difference]: Finished difference Result 909 states and 1009 transitions. [2018-12-31 06:14:44,356 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 201 states. [2018-12-31 06:14:44,356 INFO L78 Accepts]: Start accepts. Automaton has 201 states. Word has length 404 [2018-12-31 06:14:44,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 06:14:44,360 INFO L225 Difference]: With dead ends: 909 [2018-12-31 06:14:44,361 INFO L226 Difference]: Without dead ends: 704 [2018-12-31 06:14:44,362 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 605 GetRequests, 404 SyntacticMatches, 1 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 394 ImplicationChecksByTransitivity, 15.5s TimeCoverageRelationStatistics Valid=19906, Invalid=20696, Unknown=0, NotChecked=0, Total=40602 [2018-12-31 06:14:44,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2018-12-31 06:14:44,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 407. [2018-12-31 06:14:44,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2018-12-31 06:14:44,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 407 transitions. [2018-12-31 06:14:44,369 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 407 transitions. Word has length 404 [2018-12-31 06:14:44,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 06:14:44,370 INFO L480 AbstractCegarLoop]: Abstraction has 407 states and 407 transitions. [2018-12-31 06:14:44,370 INFO L481 AbstractCegarLoop]: Interpolant automaton has 201 states. [2018-12-31 06:14:44,370 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 407 transitions. [2018-12-31 06:14:44,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2018-12-31 06:14:44,374 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 06:14:44,374 INFO L402 BasicCegarLoop]: trace histogram [100, 100, 99, 99, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 06:14:44,375 INFO L423 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 06:14:44,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 06:14:44,375 INFO L82 PathProgramCache]: Analyzing trace with hash 2134474839, now seen corresponding path program 9 times [2018-12-31 06:14:44,375 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 06:14:44,375 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 06:14:44,376 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 06:14:44,376 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-31 06:14:44,376 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 06:14:44,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 06:14:59,751 INFO L134 CoverageAnalysis]: Checked inductivity of 19800 backedges. 0 proven. 19800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 06:14:59,752 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 06:14:59,752 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-31 06:14:59,761 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-31 06:15:00,197 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 100 check-sat command(s) [2018-12-31 06:15:00,197 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-31 06:15:00,208 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 06:15:00,567 INFO L134 CoverageAnalysis]: Checked inductivity of 19800 backedges. 0 proven. 19800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 06:15:00,588 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-31 06:15:00,588 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [202, 202] total 202 [2018-12-31 06:15:00,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 202 states [2018-12-31 06:15:00,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 202 interpolants. [2018-12-31 06:15:00,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20102, Invalid=20500, Unknown=0, NotChecked=0, Total=40602 [2018-12-31 06:15:00,592 INFO L87 Difference]: Start difference. First operand 407 states and 407 transitions. Second operand 202 states. [2018-12-31 06:15:11,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 06:15:11,229 INFO L93 Difference]: Finished difference Result 707 states and 807 transitions. [2018-12-31 06:15:11,229 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 202 states. [2018-12-31 06:15:11,229 INFO L78 Accepts]: Start accepts. Automaton has 202 states. Word has length 406 [2018-12-31 06:15:11,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 06:15:11,231 INFO L225 Difference]: With dead ends: 707 [2018-12-31 06:15:11,231 INFO L226 Difference]: Without dead ends: 0 [2018-12-31 06:15:11,233 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 608 GetRequests, 406 SyntacticMatches, 1 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 396 ImplicationChecksByTransitivity, 15.1s TimeCoverageRelationStatistics Valid=20106, Invalid=20900, Unknown=0, NotChecked=0, Total=41006 [2018-12-31 06:15:11,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-31 06:15:11,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-31 06:15:11,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-31 06:15:11,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-31 06:15:11,234 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 406 [2018-12-31 06:15:11,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 06:15:11,234 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-31 06:15:11,234 INFO L481 AbstractCegarLoop]: Interpolant automaton has 202 states. [2018-12-31 06:15:11,234 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-31 06:15:11,234 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-31 06:15:11,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-31 06:15:11,254 INFO L451 ceAbstractionStarter]: At program point L27(lines 10 28) the Hoare annotation is: true [2018-12-31 06:15:11,255 INFO L448 ceAbstractionStarter]: For program point L15(lines 15 17) no Hoare annotation was computed. [2018-12-31 06:15:11,255 INFO L448 ceAbstractionStarter]: For program point L15-2(lines 14 17) no Hoare annotation was computed. [2018-12-31 06:15:11,255 INFO L448 ceAbstractionStarter]: For program point L15-3(lines 10 28) no Hoare annotation was computed. [2018-12-31 06:15:11,255 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2018-12-31 06:15:11,255 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-31 06:15:11,255 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-12-31 06:15:11,255 INFO L448 ceAbstractionStarter]: For program point L12(lines 12 13) no Hoare annotation was computed. [2018-12-31 06:15:11,255 INFO L448 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-12-31 06:15:11,255 INFO L451 ceAbstractionStarter]: At program point L4-2(lines 3 8) the Hoare annotation is: true [2018-12-31 06:15:11,255 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-31 06:15:11,256 INFO L451 ceAbstractionStarter]: At program point L25(lines 10 28) the Hoare annotation is: true [2018-12-31 06:15:11,256 INFO L448 ceAbstractionStarter]: For program point L21(lines 21 24) no Hoare annotation was computed. [2018-12-31 06:15:11,256 INFO L448 ceAbstractionStarter]: For program point L21-2(lines 20 24) no Hoare annotation was computed. [2018-12-31 06:15:11,256 INFO L448 ceAbstractionStarter]: For program point L21-3(lines 10 28) no Hoare annotation was computed. [2018-12-31 06:15:11,256 INFO L448 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-12-31 06:15:11,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.12 06:15:11 BoogieIcfgContainer [2018-12-31 06:15:11,265 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-31 06:15:11,265 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-31 06:15:11,265 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-31 06:15:11,266 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-31 06:15:11,266 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 06:09:40" (3/4) ... [2018-12-31 06:15:11,270 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-31 06:15:11,281 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2018-12-31 06:15:11,281 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-12-31 06:15:11,328 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-12-31 06:15:11,328 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-31 06:15:11,329 INFO L168 Benchmark]: Toolchain (without parser) took 331164.98 ms. Allocated memory was 1.0 GB in the beginning and 1.6 GB in the end (delta: 582.0 MB). Free memory was 951.3 MB in the beginning and 878.4 MB in the end (delta: 73.0 MB). Peak memory consumption was 655.0 MB. Max. memory is 11.5 GB. [2018-12-31 06:15:11,331 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-31 06:15:11,332 INFO L168 Benchmark]: CACSL2BoogieTranslator took 235.80 ms. Allocated memory is still 1.0 GB. Free memory was 951.3 MB in the beginning and 940.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-31 06:15:11,333 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.71 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-31 06:15:11,333 INFO L168 Benchmark]: Boogie Preprocessor took 20.91 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-31 06:15:11,334 INFO L168 Benchmark]: RCFGBuilder took 352.37 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -170.5 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. [2018-12-31 06:15:11,334 INFO L168 Benchmark]: TraceAbstraction took 330456.70 ms. Allocated memory was 1.2 GB in the beginning and 1.6 GB in the end (delta: 446.2 MB). Free memory was 1.1 GB in the beginning and 878.4 MB in the end (delta: 232.7 MB). Peak memory consumption was 678.9 MB. Max. memory is 11.5 GB. [2018-12-31 06:15:11,336 INFO L168 Benchmark]: Witness Printer took 62.70 ms. Allocated memory is still 1.6 GB. Free memory is still 878.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-31 06:15:11,341 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 235.80 ms. Allocated memory is still 1.0 GB. Free memory was 951.3 MB in the beginning and 940.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 31.71 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 20.91 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 352.37 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -170.5 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 330456.70 ms. Allocated memory was 1.2 GB in the beginning and 1.6 GB in the end (delta: 446.2 MB). Free memory was 1.1 GB in the beginning and 878.4 MB in the end (delta: 232.7 MB). Peak memory consumption was 678.9 MB. Max. memory is 11.5 GB. * Witness Printer took 62.70 ms. Allocated memory is still 1.6 GB. Free memory is still 878.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 3]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 1 error locations. SAFE Result, 330.3s OverallTime, 18 OverallIterations, 191 TraceHistogramMax, 154.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 313 SDtfs, 11123 SDslu, 7180 SDs, 0 SdLazy, 12500 SolverSat, 4726 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 24.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6362 GetRequests, 3819 SyntacticMatches, 15 SemanticMatches, 2528 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10077 ImplicationChecksByTransitivity, 177.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1191occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 18 MinimizatonAttempts, 9959 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 6 NumberOfFragments, 3 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.5s SsaConstructionTime, 5.7s SatisfiabilityAnalysisTime, 167.0s InterpolantComputationTime, 8400 NumberOfCodeBlocks, 8400 NumberOfCodeBlocksAsserted, 584 NumberOfCheckSat, 8367 ConstructedInterpolants, 0 QuantifiedInterpolants, 9246001 SizeOfPredicates, 45 NumberOfNonLiveVariables, 14004 ConjunctsInSsa, 2028 ConjunctsInUnsatCore, 33 InterpolantComputations, 3 PerfectInterpolantSequences, 36290/402230 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...