./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/reducercommutativity/rangesum10_false-unreach-call_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_407f7f0e-75cf-434d-90eb-23501e71d5cd/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_407f7f0e-75cf-434d-90eb-23501e71d5cd/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_407f7f0e-75cf-434d-90eb-23501e71d5cd/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_407f7f0e-75cf-434d-90eb-23501e71d5cd/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/reducercommutativity/rangesum10_false-unreach-call_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_407f7f0e-75cf-434d-90eb-23501e71d5cd/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_407f7f0e-75cf-434d-90eb-23501e71d5cd/bin-2019/uautomizer --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 af68da58954d6230e3860792840330ae6de845ab ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-10-26 23:48:10,285 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 23:48:10,286 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 23:48:10,295 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 23:48:10,296 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 23:48:10,297 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 23:48:10,298 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 23:48:10,299 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 23:48:10,301 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 23:48:10,302 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 23:48:10,302 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 23:48:10,303 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 23:48:10,303 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 23:48:10,304 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 23:48:10,305 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 23:48:10,305 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 23:48:10,306 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 23:48:10,307 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 23:48:10,309 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 23:48:10,311 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 23:48:10,311 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 23:48:10,313 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 23:48:10,314 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 23:48:10,315 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 23:48:10,315 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 23:48:10,315 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 23:48:10,317 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 23:48:10,317 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 23:48:10,318 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 23:48:10,319 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 23:48:10,319 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 23:48:10,319 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 23:48:10,319 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 23:48:10,320 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 23:48:10,321 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 23:48:10,322 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 23:48:10,322 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_407f7f0e-75cf-434d-90eb-23501e71d5cd/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-10-26 23:48:10,333 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 23:48:10,333 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 23:48:10,334 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 23:48:10,334 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 23:48:10,335 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 23:48:10,335 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 23:48:10,335 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 23:48:10,335 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 23:48:10,335 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-26 23:48:10,335 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 23:48:10,336 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-26 23:48:10,336 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 23:48:10,336 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 23:48:10,336 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 23:48:10,337 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 23:48:10,337 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-26 23:48:10,338 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 23:48:10,338 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 23:48:10,338 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 23:48:10,338 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 23:48:10,338 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 23:48:10,338 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 23:48:10,338 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 23:48:10,339 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 23:48:10,339 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 23:48:10,339 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 23:48:10,339 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 23:48:10,339 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 23:48:10,339 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 23:48:10,339 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 -> /tmp/vcloud-vcloud-master/worker/working_dir_407f7f0e-75cf-434d-90eb-23501e71d5cd/bin-2019/uautomizer 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 -> af68da58954d6230e3860792840330ae6de845ab [2018-10-26 23:48:10,367 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 23:48:10,378 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 23:48:10,381 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 23:48:10,382 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 23:48:10,383 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 23:48:10,383 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_407f7f0e-75cf-434d-90eb-23501e71d5cd/bin-2019/uautomizer/../../sv-benchmarks/c/reducercommutativity/rangesum10_false-unreach-call_true-termination.i [2018-10-26 23:48:10,431 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_407f7f0e-75cf-434d-90eb-23501e71d5cd/bin-2019/uautomizer/data/3a24da399/be5922ac44784816b0bc12ecb28ef46b/FLAG154a6c16c [2018-10-26 23:48:10,819 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 23:48:10,820 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_407f7f0e-75cf-434d-90eb-23501e71d5cd/sv-benchmarks/c/reducercommutativity/rangesum10_false-unreach-call_true-termination.i [2018-10-26 23:48:10,826 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_407f7f0e-75cf-434d-90eb-23501e71d5cd/bin-2019/uautomizer/data/3a24da399/be5922ac44784816b0bc12ecb28ef46b/FLAG154a6c16c [2018-10-26 23:48:10,838 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_407f7f0e-75cf-434d-90eb-23501e71d5cd/bin-2019/uautomizer/data/3a24da399/be5922ac44784816b0bc12ecb28ef46b [2018-10-26 23:48:10,841 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 23:48:10,843 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 23:48:10,844 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 23:48:10,844 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 23:48:10,847 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 23:48:10,848 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:48:10" (1/1) ... [2018-10-26 23:48:10,851 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54ff3a17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:48:10, skipping insertion in model container [2018-10-26 23:48:10,851 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:48:10" (1/1) ... [2018-10-26 23:48:10,859 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 23:48:10,874 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 23:48:10,998 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 23:48:11,006 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 23:48:11,031 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 23:48:11,045 INFO L193 MainTranslator]: Completed translation [2018-10-26 23:48:11,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:48:11 WrapperNode [2018-10-26 23:48:11,045 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 23:48:11,046 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 23:48:11,046 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 23:48:11,046 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 23:48:11,063 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:48:11" (1/1) ... [2018-10-26 23:48:11,063 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:48:11" (1/1) ... [2018-10-26 23:48:11,071 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:48:11" (1/1) ... [2018-10-26 23:48:11,071 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:48:11" (1/1) ... [2018-10-26 23:48:11,078 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:48:11" (1/1) ... [2018-10-26 23:48:11,084 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:48:11" (1/1) ... [2018-10-26 23:48:11,085 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:48:11" (1/1) ... [2018-10-26 23:48:11,087 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 23:48:11,087 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 23:48:11,087 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 23:48:11,087 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 23:48:11,089 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:48:11" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_407f7f0e-75cf-434d-90eb-23501e71d5cd/bin-2019/uautomizer/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 [2018-10-26 23:48:11,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 23:48:11,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 23:48:11,199 INFO L138 BoogieDeclarations]: Found implementation of procedure init_nondet [2018-10-26 23:48:11,199 INFO L138 BoogieDeclarations]: Found implementation of procedure rangesum [2018-10-26 23:48:11,199 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 23:48:11,200 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-10-26 23:48:11,200 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-10-26 23:48:11,200 INFO L130 BoogieDeclarations]: Found specification of procedure init_nondet [2018-10-26 23:48:11,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-10-26 23:48:11,201 INFO L130 BoogieDeclarations]: Found specification of procedure rangesum [2018-10-26 23:48:11,201 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-10-26 23:48:11,201 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 23:48:11,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-10-26 23:48:11,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-10-26 23:48:11,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 23:48:11,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 23:48:11,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-10-26 23:48:12,216 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 23:48:12,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:48:12 BoogieIcfgContainer [2018-10-26 23:48:12,217 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 23:48:12,218 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 23:48:12,218 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 23:48:12,221 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 23:48:12,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:48:10" (1/3) ... [2018-10-26 23:48:12,222 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c0c0b10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:48:12, skipping insertion in model container [2018-10-26 23:48:12,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:48:11" (2/3) ... [2018-10-26 23:48:12,223 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c0c0b10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:48:12, skipping insertion in model container [2018-10-26 23:48:12,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:48:12" (3/3) ... [2018-10-26 23:48:12,225 INFO L112 eAbstractionObserver]: Analyzing ICFG rangesum10_false-unreach-call_true-termination.i [2018-10-26 23:48:12,234 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 23:48:12,242 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 23:48:12,257 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 23:48:12,286 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 23:48:12,287 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 23:48:12,287 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 23:48:12,287 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 23:48:12,287 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 23:48:12,288 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 23:48:12,288 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 23:48:12,288 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 23:48:12,288 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 23:48:12,306 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states. [2018-10-26 23:48:12,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-26 23:48:12,313 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:48:12,314 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:48:12,316 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:48:12,321 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:48:12,321 INFO L82 PathProgramCache]: Analyzing trace with hash -1791253179, now seen corresponding path program 1 times [2018-10-26 23:48:12,323 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 23:48:12,324 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 23:48:12,375 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:48:12,376 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:48:12,376 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:48:12,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:48:12,466 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2018-10-26 23:48:12,467 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 23:48:12,468 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_407f7f0e-75cf-434d-90eb-23501e71d5cd/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-10-26 23:48:12,480 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 23:48:12,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:48:12,578 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:48:12,603 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-10-26 23:48:12,634 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:48:12,634 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-26 23:48:12,639 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-26 23:48:12,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-26 23:48:12,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 23:48:12,654 INFO L87 Difference]: Start difference. First operand 57 states. Second operand 2 states. [2018-10-26 23:48:12,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:48:12,687 INFO L93 Difference]: Finished difference Result 101 states and 122 transitions. [2018-10-26 23:48:12,687 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-26 23:48:12,688 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 45 [2018-10-26 23:48:12,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:48:12,699 INFO L225 Difference]: With dead ends: 101 [2018-10-26 23:48:12,699 INFO L226 Difference]: Without dead ends: 50 [2018-10-26 23:48:12,705 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 23:48:12,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-10-26 23:48:12,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2018-10-26 23:48:12,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-10-26 23:48:12,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 56 transitions. [2018-10-26 23:48:12,758 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 56 transitions. Word has length 45 [2018-10-26 23:48:12,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:48:12,758 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 56 transitions. [2018-10-26 23:48:12,758 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-26 23:48:12,758 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 56 transitions. [2018-10-26 23:48:12,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-10-26 23:48:12,761 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:48:12,761 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:48:12,761 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:48:12,761 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:48:12,762 INFO L82 PathProgramCache]: Analyzing trace with hash 1678192877, now seen corresponding path program 1 times [2018-10-26 23:48:12,762 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 23:48:12,762 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 23:48:12,763 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:48:12,763 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:48:12,763 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:48:12,785 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-26 23:48:12,785 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-26 23:48:12,786 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_407f7f0e-75cf-434d-90eb-23501e71d5cd/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-26 23:48:12,815 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:48:12,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:48:12,880 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:48:12,969 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-26 23:48:12,992 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:48:12,992 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 23:48:12,993 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 23:48:12,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 23:48:12,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 23:48:12,994 INFO L87 Difference]: Start difference. First operand 50 states and 56 transitions. Second operand 3 states. [2018-10-26 23:48:13,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:48:13,085 INFO L93 Difference]: Finished difference Result 92 states and 104 transitions. [2018-10-26 23:48:13,086 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 23:48:13,086 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2018-10-26 23:48:13,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:48:13,087 INFO L225 Difference]: With dead ends: 92 [2018-10-26 23:48:13,087 INFO L226 Difference]: Without dead ends: 55 [2018-10-26 23:48:13,088 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 23:48:13,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-10-26 23:48:13,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 52. [2018-10-26 23:48:13,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-10-26 23:48:13,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 58 transitions. [2018-10-26 23:48:13,096 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 58 transitions. Word has length 50 [2018-10-26 23:48:13,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:48:13,096 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 58 transitions. [2018-10-26 23:48:13,096 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 23:48:13,096 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 58 transitions. [2018-10-26 23:48:13,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-10-26 23:48:13,098 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:48:13,098 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:48:13,098 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:48:13,098 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:48:13,098 INFO L82 PathProgramCache]: Analyzing trace with hash -1102645303, now seen corresponding path program 1 times [2018-10-26 23:48:13,099 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 23:48:13,099 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 23:48:13,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:48:13,100 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:48:13,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:48:13,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:48:13,146 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2018-10-26 23:48:13,147 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 23:48:13,147 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_407f7f0e-75cf-434d-90eb-23501e71d5cd/bin-2019/uautomizer/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 [2018-10-26 23:48:13,161 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:48:13,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:48:13,227 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:48:13,298 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-10-26 23:48:13,329 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:48:13,329 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 23:48:13,330 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 23:48:13,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 23:48:13,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 23:48:13,330 INFO L87 Difference]: Start difference. First operand 52 states and 58 transitions. Second operand 3 states. [2018-10-26 23:48:13,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:48:13,393 INFO L93 Difference]: Finished difference Result 94 states and 112 transitions. [2018-10-26 23:48:13,394 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 23:48:13,394 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 55 [2018-10-26 23:48:13,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:48:13,397 INFO L225 Difference]: With dead ends: 94 [2018-10-26 23:48:13,398 INFO L226 Difference]: Without dead ends: 61 [2018-10-26 23:48:13,398 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 23:48:13,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-10-26 23:48:13,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 57. [2018-10-26 23:48:13,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-10-26 23:48:13,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 65 transitions. [2018-10-26 23:48:13,408 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 65 transitions. Word has length 55 [2018-10-26 23:48:13,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:48:13,409 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 65 transitions. [2018-10-26 23:48:13,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 23:48:13,409 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 65 transitions. [2018-10-26 23:48:13,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-10-26 23:48:13,411 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:48:13,411 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:48:13,411 INFO L424 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:48:13,411 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:48:13,411 INFO L82 PathProgramCache]: Analyzing trace with hash 192802346, now seen corresponding path program 1 times [2018-10-26 23:48:13,412 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 23:48:13,412 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 23:48:13,415 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:48:13,415 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:48:13,415 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:48:13,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:48:13,508 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-10-26 23:48:13,508 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 23:48:13,508 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_407f7f0e-75cf-434d-90eb-23501e71d5cd/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-10-26 23:48:13,518 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 23:48:13,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:48:13,579 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:48:13,642 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-10-26 23:48:13,673 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 23:48:13,673 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-26 23:48:13,674 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 23:48:13,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 23:48:13,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 23:48:13,674 INFO L87 Difference]: Start difference. First operand 57 states and 65 transitions. Second operand 4 states. [2018-10-26 23:48:13,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:48:13,755 INFO L93 Difference]: Finished difference Result 99 states and 118 transitions. [2018-10-26 23:48:13,760 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 23:48:13,760 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2018-10-26 23:48:13,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:48:13,761 INFO L225 Difference]: With dead ends: 99 [2018-10-26 23:48:13,762 INFO L226 Difference]: Without dead ends: 61 [2018-10-26 23:48:13,762 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 23:48:13,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-10-26 23:48:13,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2018-10-26 23:48:13,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-10-26 23:48:13,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 68 transitions. [2018-10-26 23:48:13,771 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 68 transitions. Word has length 55 [2018-10-26 23:48:13,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:48:13,771 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 68 transitions. [2018-10-26 23:48:13,771 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 23:48:13,771 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 68 transitions. [2018-10-26 23:48:13,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-10-26 23:48:13,774 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:48:13,775 INFO L375 BasicCegarLoop]: trace histogram [6, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:48:13,775 INFO L424 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:48:13,775 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:48:13,775 INFO L82 PathProgramCache]: Analyzing trace with hash -531920157, now seen corresponding path program 1 times [2018-10-26 23:48:13,775 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 23:48:13,776 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 23:48:13,776 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:48:13,778 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:48:13,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:48:13,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:48:13,918 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-10-26 23:48:13,919 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 23:48:13,919 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_407f7f0e-75cf-434d-90eb-23501e71d5cd/bin-2019/uautomizer/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 [2018-10-26 23:48:13,926 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:48:13,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:48:13,980 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:48:14,030 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-10-26 23:48:14,048 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 23:48:14,049 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-10-26 23:48:14,049 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 23:48:14,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 23:48:14,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-26 23:48:14,050 INFO L87 Difference]: Start difference. First operand 60 states and 68 transitions. Second operand 5 states. [2018-10-26 23:48:14,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:48:14,209 INFO L93 Difference]: Finished difference Result 113 states and 133 transitions. [2018-10-26 23:48:14,211 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 23:48:14,211 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 67 [2018-10-26 23:48:14,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:48:14,213 INFO L225 Difference]: With dead ends: 113 [2018-10-26 23:48:14,213 INFO L226 Difference]: Without dead ends: 72 [2018-10-26 23:48:14,213 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-26 23:48:14,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-10-26 23:48:14,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 60. [2018-10-26 23:48:14,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-10-26 23:48:14,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 66 transitions. [2018-10-26 23:48:14,221 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 66 transitions. Word has length 67 [2018-10-26 23:48:14,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:48:14,222 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 66 transitions. [2018-10-26 23:48:14,222 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 23:48:14,222 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 66 transitions. [2018-10-26 23:48:14,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-10-26 23:48:14,224 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:48:14,224 INFO L375 BasicCegarLoop]: trace histogram [9, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:48:14,226 INFO L424 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:48:14,226 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:48:14,226 INFO L82 PathProgramCache]: Analyzing trace with hash -847376624, now seen corresponding path program 1 times [2018-10-26 23:48:14,226 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 23:48:14,227 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 23:48:14,228 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:48:14,228 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:48:14,228 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:48:14,239 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-26 23:48:14,240 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-26 23:48:14,240 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_407f7f0e-75cf-434d-90eb-23501e71d5cd/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-26 23:48:14,273 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:48:14,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:48:14,316 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:48:14,468 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2018-10-26 23:48:14,501 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-26 23:48:14,501 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-10-26 23:48:14,501 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 23:48:14,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 23:48:14,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 23:48:14,502 INFO L87 Difference]: Start difference. First operand 60 states and 66 transitions. Second operand 4 states. [2018-10-26 23:48:14,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:48:14,659 INFO L93 Difference]: Finished difference Result 113 states and 125 transitions. [2018-10-26 23:48:14,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 23:48:14,659 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 91 [2018-10-26 23:48:14,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:48:14,660 INFO L225 Difference]: With dead ends: 113 [2018-10-26 23:48:14,660 INFO L226 Difference]: Without dead ends: 68 [2018-10-26 23:48:14,661 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 23:48:14,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-10-26 23:48:14,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 65. [2018-10-26 23:48:14,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-10-26 23:48:14,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 71 transitions. [2018-10-26 23:48:14,667 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 71 transitions. Word has length 91 [2018-10-26 23:48:14,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:48:14,668 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 71 transitions. [2018-10-26 23:48:14,668 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 23:48:14,668 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 71 transitions. [2018-10-26 23:48:14,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-10-26 23:48:14,670 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:48:14,670 INFO L375 BasicCegarLoop]: trace histogram [9, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:48:14,670 INFO L424 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:48:14,670 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:48:14,670 INFO L82 PathProgramCache]: Analyzing trace with hash 1747890100, now seen corresponding path program 2 times [2018-10-26 23:48:14,671 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 23:48:14,671 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 23:48:14,671 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:48:14,672 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:48:14,672 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:48:14,682 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-26 23:48:14,682 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-26 23:48:14,682 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_407f7f0e-75cf-434d-90eb-23501e71d5cd/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-10-26 23:48:14,691 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-26 23:48:14,736 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-26 23:48:14,736 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-26 23:48:14,739 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:48:14,828 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2018-10-26 23:48:14,848 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-26 23:48:14,849 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-10-26 23:48:14,849 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 23:48:14,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 23:48:14,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 23:48:14,850 INFO L87 Difference]: Start difference. First operand 65 states and 71 transitions. Second operand 5 states. [2018-10-26 23:48:14,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:48:14,941 INFO L93 Difference]: Finished difference Result 118 states and 130 transitions. [2018-10-26 23:48:14,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 23:48:14,942 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 96 [2018-10-26 23:48:14,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:48:14,943 INFO L225 Difference]: With dead ends: 118 [2018-10-26 23:48:14,943 INFO L226 Difference]: Without dead ends: 73 [2018-10-26 23:48:14,944 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 23:48:14,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-10-26 23:48:14,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 70. [2018-10-26 23:48:14,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-10-26 23:48:14,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 76 transitions. [2018-10-26 23:48:14,952 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 76 transitions. Word has length 96 [2018-10-26 23:48:14,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:48:14,953 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 76 transitions. [2018-10-26 23:48:14,953 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 23:48:14,953 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 76 transitions. [2018-10-26 23:48:14,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-10-26 23:48:14,954 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:48:14,954 INFO L375 BasicCegarLoop]: trace histogram [9, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:48:14,955 INFO L424 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:48:14,955 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:48:14,955 INFO L82 PathProgramCache]: Analyzing trace with hash 448583056, now seen corresponding path program 3 times [2018-10-26 23:48:14,955 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 23:48:14,955 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 23:48:14,959 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:48:14,959 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-26 23:48:14,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:48:14,973 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-26 23:48:14,974 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-26 23:48:14,974 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_407f7f0e-75cf-434d-90eb-23501e71d5cd/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-10-26 23:48:14,994 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-26 23:48:15,035 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-10-26 23:48:15,035 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-26 23:48:15,040 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:48:15,199 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 64 proven. 2 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2018-10-26 23:48:15,229 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-26 23:48:15,229 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-10-26 23:48:15,229 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 23:48:15,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 23:48:15,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 23:48:15,230 INFO L87 Difference]: Start difference. First operand 70 states and 76 transitions. Second operand 4 states. [2018-10-26 23:48:15,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:48:15,276 INFO L93 Difference]: Finished difference Result 102 states and 111 transitions. [2018-10-26 23:48:15,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 23:48:15,277 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 101 [2018-10-26 23:48:15,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:48:15,278 INFO L225 Difference]: With dead ends: 102 [2018-10-26 23:48:15,278 INFO L226 Difference]: Without dead ends: 80 [2018-10-26 23:48:15,278 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 23:48:15,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2018-10-26 23:48:15,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 76. [2018-10-26 23:48:15,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-10-26 23:48:15,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 82 transitions. [2018-10-26 23:48:15,284 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 82 transitions. Word has length 101 [2018-10-26 23:48:15,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:48:15,284 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 82 transitions. [2018-10-26 23:48:15,284 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 23:48:15,285 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 82 transitions. [2018-10-26 23:48:15,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-10-26 23:48:15,286 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:48:15,286 INFO L375 BasicCegarLoop]: trace histogram [9, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:48:15,286 INFO L424 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:48:15,286 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:48:15,286 INFO L82 PathProgramCache]: Analyzing trace with hash 1619503784, now seen corresponding path program 4 times [2018-10-26 23:48:15,286 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 23:48:15,287 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 23:48:15,287 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:48:15,287 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-26 23:48:15,287 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:48:15,298 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-26 23:48:15,298 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-26 23:48:15,298 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_407f7f0e-75cf-434d-90eb-23501e71d5cd/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-26 23:48:15,307 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-26 23:48:15,339 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-26 23:48:15,340 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-26 23:48:15,343 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:48:15,540 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2018-10-26 23:48:15,562 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-26 23:48:15,562 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-10-26 23:48:15,562 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 23:48:15,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 23:48:15,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-10-26 23:48:15,563 INFO L87 Difference]: Start difference. First operand 76 states and 82 transitions. Second operand 6 states. [2018-10-26 23:48:15,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:48:15,612 INFO L93 Difference]: Finished difference Result 135 states and 147 transitions. [2018-10-26 23:48:15,613 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-26 23:48:15,614 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 107 [2018-10-26 23:48:15,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:48:15,615 INFO L225 Difference]: With dead ends: 135 [2018-10-26 23:48:15,615 INFO L226 Difference]: Without dead ends: 84 [2018-10-26 23:48:15,615 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-10-26 23:48:15,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-10-26 23:48:15,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 81. [2018-10-26 23:48:15,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-10-26 23:48:15,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 87 transitions. [2018-10-26 23:48:15,622 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 87 transitions. Word has length 107 [2018-10-26 23:48:15,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:48:15,622 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 87 transitions. [2018-10-26 23:48:15,622 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 23:48:15,622 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 87 transitions. [2018-10-26 23:48:15,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-10-26 23:48:15,624 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:48:15,624 INFO L375 BasicCegarLoop]: trace histogram [9, 6, 6, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:48:15,624 INFO L424 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:48:15,624 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:48:15,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1925874508, now seen corresponding path program 5 times [2018-10-26 23:48:15,625 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 23:48:15,625 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 23:48:15,625 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:48:15,626 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-26 23:48:15,626 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:48:15,637 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-26 23:48:15,637 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-26 23:48:15,637 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_407f7f0e-75cf-434d-90eb-23501e71d5cd/bin-2019/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-10-26 23:48:15,649 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-26 23:48:15,672 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-26 23:48:15,673 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-26 23:48:15,675 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:48:15,751 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 63 proven. 3 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2018-10-26 23:48:15,771 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-26 23:48:15,771 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-10-26 23:48:15,772 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 23:48:15,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 23:48:15,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 23:48:15,772 INFO L87 Difference]: Start difference. First operand 81 states and 87 transitions. Second operand 5 states. [2018-10-26 23:48:15,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:48:15,811 INFO L93 Difference]: Finished difference Result 138 states and 154 transitions. [2018-10-26 23:48:15,818 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 23:48:15,818 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2018-10-26 23:48:15,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:48:15,820 INFO L225 Difference]: With dead ends: 138 [2018-10-26 23:48:15,820 INFO L226 Difference]: Without dead ends: 91 [2018-10-26 23:48:15,821 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 23:48:15,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-10-26 23:48:15,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 87. [2018-10-26 23:48:15,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-10-26 23:48:15,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 94 transitions. [2018-10-26 23:48:15,840 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 94 transitions. Word has length 112 [2018-10-26 23:48:15,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:48:15,840 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 94 transitions. [2018-10-26 23:48:15,840 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 23:48:15,840 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 94 transitions. [2018-10-26 23:48:15,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-10-26 23:48:15,841 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:48:15,842 INFO L375 BasicCegarLoop]: trace histogram [12, 9, 9, 6, 6, 6, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:48:15,842 INFO L424 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:48:15,842 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:48:15,842 INFO L82 PathProgramCache]: Analyzing trace with hash 914440898, now seen corresponding path program 6 times [2018-10-26 23:48:15,842 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 23:48:15,843 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 23:48:15,843 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:48:15,843 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-26 23:48:15,843 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:48:15,889 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-26 23:48:15,897 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-26 23:48:15,898 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_407f7f0e-75cf-434d-90eb-23501e71d5cd/bin-2019/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-10-26 23:48:15,913 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-26 23:48:16,023 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-10-26 23:48:16,024 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-26 23:48:16,031 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:48:16,076 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 108 proven. 12 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2018-10-26 23:48:16,096 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-26 23:48:16,096 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-10-26 23:48:16,096 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 23:48:16,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 23:48:16,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-10-26 23:48:16,097 INFO L87 Difference]: Start difference. First operand 87 states and 94 transitions. Second operand 6 states. [2018-10-26 23:48:16,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:48:16,169 INFO L93 Difference]: Finished difference Result 150 states and 168 transitions. [2018-10-26 23:48:16,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-26 23:48:16,170 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 130 [2018-10-26 23:48:16,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:48:16,171 INFO L225 Difference]: With dead ends: 150 [2018-10-26 23:48:16,171 INFO L226 Difference]: Without dead ends: 97 [2018-10-26 23:48:16,172 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-10-26 23:48:16,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-10-26 23:48:16,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 93. [2018-10-26 23:48:16,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-10-26 23:48:16,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 101 transitions. [2018-10-26 23:48:16,180 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 101 transitions. Word has length 130 [2018-10-26 23:48:16,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:48:16,180 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 101 transitions. [2018-10-26 23:48:16,180 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 23:48:16,181 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 101 transitions. [2018-10-26 23:48:16,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-10-26 23:48:16,182 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:48:16,182 INFO L375 BasicCegarLoop]: trace histogram [15, 12, 12, 9, 9, 9, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:48:16,182 INFO L424 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:48:16,182 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:48:16,183 INFO L82 PathProgramCache]: Analyzing trace with hash 770830008, now seen corresponding path program 7 times [2018-10-26 23:48:16,183 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 23:48:16,183 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 23:48:16,183 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:48:16,184 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-26 23:48:16,184 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:48:16,197 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-26 23:48:16,197 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-26 23:48:16,198 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_407f7f0e-75cf-434d-90eb-23501e71d5cd/bin-2019/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-26 23:48:16,207 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:48:16,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:48:16,250 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:48:16,460 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 436 trivial. 0 not checked. [2018-10-26 23:48:16,481 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-26 23:48:16,481 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-10-26 23:48:16,481 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-26 23:48:16,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-26 23:48:16,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-10-26 23:48:16,482 INFO L87 Difference]: Start difference. First operand 93 states and 101 transitions. Second operand 7 states. [2018-10-26 23:48:16,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:48:16,533 INFO L93 Difference]: Finished difference Result 164 states and 180 transitions. [2018-10-26 23:48:16,539 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 23:48:16,539 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 148 [2018-10-26 23:48:16,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:48:16,540 INFO L225 Difference]: With dead ends: 164 [2018-10-26 23:48:16,540 INFO L226 Difference]: Without dead ends: 101 [2018-10-26 23:48:16,541 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-10-26 23:48:16,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-10-26 23:48:16,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 98. [2018-10-26 23:48:16,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2018-10-26 23:48:16,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 106 transitions. [2018-10-26 23:48:16,545 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 106 transitions. Word has length 148 [2018-10-26 23:48:16,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:48:16,546 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 106 transitions. [2018-10-26 23:48:16,546 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-26 23:48:16,546 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 106 transitions. [2018-10-26 23:48:16,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-10-26 23:48:16,547 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:48:16,548 INFO L375 BasicCegarLoop]: trace histogram [15, 12, 12, 9, 9, 9, 6, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:48:16,548 INFO L424 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:48:16,548 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:48:16,548 INFO L82 PathProgramCache]: Analyzing trace with hash 798498452, now seen corresponding path program 8 times [2018-10-26 23:48:16,548 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 23:48:16,548 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 23:48:16,549 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:48:16,549 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:48:16,549 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:48:16,562 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-26 23:48:16,562 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-26 23:48:16,562 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_407f7f0e-75cf-434d-90eb-23501e71d5cd/bin-2019/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-26 23:48:16,572 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-26 23:48:16,620 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-26 23:48:16,620 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-26 23:48:16,623 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:48:16,757 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 436 trivial. 0 not checked. [2018-10-26 23:48:16,785 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-26 23:48:16,785 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-10-26 23:48:16,786 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-26 23:48:16,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-26 23:48:16,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-10-26 23:48:16,786 INFO L87 Difference]: Start difference. First operand 98 states and 106 transitions. Second operand 8 states. [2018-10-26 23:48:16,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:48:16,819 INFO L93 Difference]: Finished difference Result 169 states and 185 transitions. [2018-10-26 23:48:16,820 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-26 23:48:16,820 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 153 [2018-10-26 23:48:16,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:48:16,821 INFO L225 Difference]: With dead ends: 169 [2018-10-26 23:48:16,821 INFO L226 Difference]: Without dead ends: 106 [2018-10-26 23:48:16,821 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-10-26 23:48:16,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2018-10-26 23:48:16,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 103. [2018-10-26 23:48:16,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-10-26 23:48:16,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 111 transitions. [2018-10-26 23:48:16,826 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 111 transitions. Word has length 153 [2018-10-26 23:48:16,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:48:16,827 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 111 transitions. [2018-10-26 23:48:16,827 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-26 23:48:16,827 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 111 transitions. [2018-10-26 23:48:16,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-10-26 23:48:16,828 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:48:16,829 INFO L375 BasicCegarLoop]: trace histogram [15, 12, 12, 9, 9, 9, 7, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:48:16,829 INFO L424 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:48:16,829 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:48:16,829 INFO L82 PathProgramCache]: Analyzing trace with hash -253659080, now seen corresponding path program 9 times [2018-10-26 23:48:16,829 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 23:48:16,829 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 23:48:16,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:48:16,830 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-26 23:48:16,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:48:16,844 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-26 23:48:16,844 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-26 23:48:16,844 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_407f7f0e-75cf-434d-90eb-23501e71d5cd/bin-2019/uautomizer/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-26 23:48:16,853 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-26 23:48:16,917 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-10-26 23:48:16,917 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-26 23:48:16,920 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:48:16,973 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 208 proven. 10 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2018-10-26 23:48:17,004 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-26 23:48:17,005 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-10-26 23:48:17,005 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 23:48:17,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 23:48:17,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 23:48:17,006 INFO L87 Difference]: Start difference. First operand 103 states and 111 transitions. Second operand 5 states. [2018-10-26 23:48:17,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:48:17,120 INFO L93 Difference]: Finished difference Result 147 states and 160 transitions. [2018-10-26 23:48:17,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 23:48:17,121 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 158 [2018-10-26 23:48:17,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:48:17,121 INFO L225 Difference]: With dead ends: 147 [2018-10-26 23:48:17,122 INFO L226 Difference]: Without dead ends: 113 [2018-10-26 23:48:17,122 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 23:48:17,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-10-26 23:48:17,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 109. [2018-10-26 23:48:17,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-10-26 23:48:17,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 117 transitions. [2018-10-26 23:48:17,126 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 117 transitions. Word has length 158 [2018-10-26 23:48:17,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:48:17,127 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 117 transitions. [2018-10-26 23:48:17,127 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 23:48:17,127 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 117 transitions. [2018-10-26 23:48:17,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-10-26 23:48:17,128 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:48:17,128 INFO L375 BasicCegarLoop]: trace histogram [15, 12, 12, 9, 9, 9, 7, 6, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:48:17,128 INFO L424 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:48:17,128 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:48:17,129 INFO L82 PathProgramCache]: Analyzing trace with hash 10054224, now seen corresponding path program 10 times [2018-10-26 23:48:17,129 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 23:48:17,129 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 23:48:17,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:48:17,130 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-26 23:48:17,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:48:17,142 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-26 23:48:17,143 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-26 23:48:17,143 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_407f7f0e-75cf-434d-90eb-23501e71d5cd/bin-2019/uautomizer/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-26 23:48:17,161 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-26 23:48:17,196 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-26 23:48:17,196 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-26 23:48:17,200 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:48:17,310 INFO L134 CoverageAnalysis]: Checked inductivity of 537 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2018-10-26 23:48:17,340 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-26 23:48:17,340 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-10-26 23:48:17,341 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-26 23:48:17,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-26 23:48:17,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-10-26 23:48:17,341 INFO L87 Difference]: Start difference. First operand 109 states and 117 transitions. Second operand 9 states. [2018-10-26 23:48:17,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:48:17,424 INFO L93 Difference]: Finished difference Result 186 states and 202 transitions. [2018-10-26 23:48:17,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-26 23:48:17,426 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 164 [2018-10-26 23:48:17,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:48:17,426 INFO L225 Difference]: With dead ends: 186 [2018-10-26 23:48:17,427 INFO L226 Difference]: Without dead ends: 117 [2018-10-26 23:48:17,427 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-10-26 23:48:17,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-10-26 23:48:17,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 114. [2018-10-26 23:48:17,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2018-10-26 23:48:17,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 122 transitions. [2018-10-26 23:48:17,431 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 122 transitions. Word has length 164 [2018-10-26 23:48:17,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:48:17,431 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 122 transitions. [2018-10-26 23:48:17,432 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-26 23:48:17,432 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 122 transitions. [2018-10-26 23:48:17,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2018-10-26 23:48:17,433 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:48:17,433 INFO L375 BasicCegarLoop]: trace histogram [15, 12, 12, 9, 9, 9, 8, 7, 7, 7, 7, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:48:17,434 INFO L424 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:48:17,434 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:48:17,434 INFO L82 PathProgramCache]: Analyzing trace with hash 2013028908, now seen corresponding path program 11 times [2018-10-26 23:48:17,434 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 23:48:17,434 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 23:48:17,435 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:48:17,435 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-26 23:48:17,435 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:48:17,456 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-26 23:48:17,456 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-26 23:48:17,456 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_407f7f0e-75cf-434d-90eb-23501e71d5cd/bin-2019/uautomizer/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-26 23:48:17,474 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-26 23:48:17,512 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2018-10-26 23:48:17,512 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-26 23:48:17,514 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:48:17,542 INFO L134 CoverageAnalysis]: Checked inductivity of 569 backedges. 259 proven. 3 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2018-10-26 23:48:17,560 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-26 23:48:17,560 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-10-26 23:48:17,561 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 23:48:17,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 23:48:17,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 23:48:17,561 INFO L87 Difference]: Start difference. First operand 114 states and 122 transitions. Second operand 4 states. [2018-10-26 23:48:17,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:48:17,587 INFO L93 Difference]: Finished difference Result 184 states and 202 transitions. [2018-10-26 23:48:17,592 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 23:48:17,592 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 169 [2018-10-26 23:48:17,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:48:17,593 INFO L225 Difference]: With dead ends: 184 [2018-10-26 23:48:17,593 INFO L226 Difference]: Without dead ends: 119 [2018-10-26 23:48:17,594 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 23:48:17,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-10-26 23:48:17,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 118. [2018-10-26 23:48:17,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2018-10-26 23:48:17,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 126 transitions. [2018-10-26 23:48:17,598 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 126 transitions. Word has length 169 [2018-10-26 23:48:17,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:48:17,598 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 126 transitions. [2018-10-26 23:48:17,598 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 23:48:17,598 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 126 transitions. [2018-10-26 23:48:17,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-10-26 23:48:17,599 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:48:17,600 INFO L375 BasicCegarLoop]: trace histogram [18, 15, 15, 9, 9, 9, 8, 7, 7, 7, 7, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:48:17,600 INFO L424 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:48:17,601 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:48:17,601 INFO L82 PathProgramCache]: Analyzing trace with hash 750825573, now seen corresponding path program 12 times [2018-10-26 23:48:17,601 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 23:48:17,602 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 23:48:17,602 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:48:17,602 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-26 23:48:17,603 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:48:17,617 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-26 23:48:17,617 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-26 23:48:17,617 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_407f7f0e-75cf-434d-90eb-23501e71d5cd/bin-2019/uautomizer/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-26 23:48:17,631 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-26 23:48:18,648 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2018-10-26 23:48:18,648 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-26 23:48:18,652 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:48:18,728 INFO L134 CoverageAnalysis]: Checked inductivity of 743 backedges. 308 proven. 27 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2018-10-26 23:48:18,759 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-26 23:48:18,759 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-10-26 23:48:18,759 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-26 23:48:18,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-26 23:48:18,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-10-26 23:48:18,761 INFO L87 Difference]: Start difference. First operand 118 states and 126 transitions. Second operand 7 states. [2018-10-26 23:48:18,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:48:18,898 INFO L93 Difference]: Finished difference Result 193 states and 212 transitions. [2018-10-26 23:48:18,899 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 23:48:18,899 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 181 [2018-10-26 23:48:18,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:48:18,900 INFO L225 Difference]: With dead ends: 193 [2018-10-26 23:48:18,900 INFO L226 Difference]: Without dead ends: 124 [2018-10-26 23:48:18,901 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-10-26 23:48:18,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2018-10-26 23:48:18,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2018-10-26 23:48:18,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2018-10-26 23:48:18,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 133 transitions. [2018-10-26 23:48:18,906 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 133 transitions. Word has length 181 [2018-10-26 23:48:18,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:48:18,906 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 133 transitions. [2018-10-26 23:48:18,906 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-26 23:48:18,906 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 133 transitions. [2018-10-26 23:48:18,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2018-10-26 23:48:18,907 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:48:18,907 INFO L375 BasicCegarLoop]: trace histogram [21, 18, 18, 12, 12, 12, 8, 7, 7, 7, 7, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:48:18,907 INFO L424 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:48:18,907 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:48:18,908 INFO L82 PathProgramCache]: Analyzing trace with hash 153150171, now seen corresponding path program 13 times [2018-10-26 23:48:18,908 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 23:48:18,908 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 23:48:18,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:48:18,908 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-26 23:48:18,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:48:18,920 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-26 23:48:18,921 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-26 23:48:18,921 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_407f7f0e-75cf-434d-90eb-23501e71d5cd/bin-2019/uautomizer/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-10-26 23:48:18,930 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-26 23:48:18,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:48:18,986 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:48:19,078 INFO L134 CoverageAnalysis]: Checked inductivity of 1013 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 894 trivial. 0 not checked. [2018-10-26 23:48:19,095 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-26 23:48:19,095 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-10-26 23:48:19,096 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-26 23:48:19,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-26 23:48:19,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-10-26 23:48:19,096 INFO L87 Difference]: Start difference. First operand 124 states and 133 transitions. Second operand 10 states. [2018-10-26 23:48:19,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:48:19,150 INFO L93 Difference]: Finished difference Result 211 states and 229 transitions. [2018-10-26 23:48:19,152 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-26 23:48:19,152 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 199 [2018-10-26 23:48:19,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:48:19,153 INFO L225 Difference]: With dead ends: 211 [2018-10-26 23:48:19,153 INFO L226 Difference]: Without dead ends: 132 [2018-10-26 23:48:19,153 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-10-26 23:48:19,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2018-10-26 23:48:19,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 129. [2018-10-26 23:48:19,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-10-26 23:48:19,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 138 transitions. [2018-10-26 23:48:19,160 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 138 transitions. Word has length 199 [2018-10-26 23:48:19,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:48:19,161 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 138 transitions. [2018-10-26 23:48:19,161 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-26 23:48:19,161 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 138 transitions. [2018-10-26 23:48:19,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-10-26 23:48:19,162 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:48:19,162 INFO L375 BasicCegarLoop]: trace histogram [21, 18, 18, 12, 12, 12, 9, 8, 8, 8, 8, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:48:19,162 INFO L424 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:48:19,162 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:48:19,163 INFO L82 PathProgramCache]: Analyzing trace with hash -1405682305, now seen corresponding path program 14 times [2018-10-26 23:48:19,163 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 23:48:19,163 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 23:48:19,163 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:48:19,163 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:48:19,164 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:48:19,188 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-26 23:48:19,192 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-26 23:48:19,192 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_407f7f0e-75cf-434d-90eb-23501e71d5cd/bin-2019/uautomizer/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-10-26 23:48:19,203 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-26 23:48:19,257 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-26 23:48:19,257 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-26 23:48:19,261 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:48:19,510 INFO L134 CoverageAnalysis]: Checked inductivity of 1050 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 894 trivial. 0 not checked. [2018-10-26 23:48:19,527 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-26 23:48:19,527 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-10-26 23:48:19,527 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-26 23:48:19,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-26 23:48:19,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-10-26 23:48:19,528 INFO L87 Difference]: Start difference. First operand 129 states and 138 transitions. Second operand 11 states. [2018-10-26 23:48:19,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:48:19,580 INFO L93 Difference]: Finished difference Result 216 states and 234 transitions. [2018-10-26 23:48:19,581 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-26 23:48:19,581 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 204 [2018-10-26 23:48:19,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:48:19,582 INFO L225 Difference]: With dead ends: 216 [2018-10-26 23:48:19,582 INFO L226 Difference]: Without dead ends: 137 [2018-10-26 23:48:19,582 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-10-26 23:48:19,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2018-10-26 23:48:19,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 134. [2018-10-26 23:48:19,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2018-10-26 23:48:19,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 143 transitions. [2018-10-26 23:48:19,586 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 143 transitions. Word has length 204 [2018-10-26 23:48:19,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:48:19,587 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 143 transitions. [2018-10-26 23:48:19,587 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-26 23:48:19,587 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 143 transitions. [2018-10-26 23:48:19,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-10-26 23:48:19,588 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:48:19,588 INFO L375 BasicCegarLoop]: trace histogram [21, 18, 18, 12, 12, 12, 10, 9, 9, 9, 9, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:48:19,588 INFO L424 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:48:19,588 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:48:19,588 INFO L82 PathProgramCache]: Analyzing trace with hash -54793893, now seen corresponding path program 15 times [2018-10-26 23:48:19,588 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 23:48:19,589 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 23:48:19,589 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:48:19,589 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-26 23:48:19,589 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:48:19,600 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-26 23:48:19,600 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-26 23:48:19,600 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_407f7f0e-75cf-434d-90eb-23501e71d5cd/bin-2019/uautomizer/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-10-26 23:48:19,615 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-26 23:48:19,675 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2018-10-26 23:48:19,675 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-26 23:48:19,679 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:48:19,779 INFO L134 CoverageAnalysis]: Checked inductivity of 1092 backedges. 412 proven. 24 refuted. 0 times theorem prover too weak. 656 trivial. 0 not checked. [2018-10-26 23:48:19,797 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-26 23:48:19,797 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-10-26 23:48:19,797 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 23:48:19,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 23:48:19,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-10-26 23:48:19,798 INFO L87 Difference]: Start difference. First operand 134 states and 143 transitions. Second operand 6 states. [2018-10-26 23:48:19,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:48:19,908 INFO L93 Difference]: Finished difference Result 188 states and 203 transitions. [2018-10-26 23:48:19,908 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-26 23:48:19,908 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 209 [2018-10-26 23:48:19,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:48:19,909 INFO L225 Difference]: With dead ends: 188 [2018-10-26 23:48:19,910 INFO L226 Difference]: Without dead ends: 144 [2018-10-26 23:48:19,910 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-10-26 23:48:19,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2018-10-26 23:48:19,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 140. [2018-10-26 23:48:19,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2018-10-26 23:48:19,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 149 transitions. [2018-10-26 23:48:19,917 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 149 transitions. Word has length 209 [2018-10-26 23:48:19,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:48:19,918 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 149 transitions. [2018-10-26 23:48:19,918 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 23:48:19,918 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 149 transitions. [2018-10-26 23:48:19,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2018-10-26 23:48:19,919 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:48:19,919 INFO L375 BasicCegarLoop]: trace histogram [21, 18, 18, 12, 12, 12, 10, 9, 9, 9, 9, 6, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:48:19,919 INFO L424 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:48:19,919 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:48:19,919 INFO L82 PathProgramCache]: Analyzing trace with hash -1922054157, now seen corresponding path program 16 times [2018-10-26 23:48:19,920 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 23:48:19,920 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 23:48:19,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:48:19,925 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-26 23:48:19,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:48:19,936 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-26 23:48:19,936 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-26 23:48:19,936 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_407f7f0e-75cf-434d-90eb-23501e71d5cd/bin-2019/uautomizer/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-10-26 23:48:19,958 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-26 23:48:20,006 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-26 23:48:20,007 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-26 23:48:20,011 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:48:20,242 INFO L134 CoverageAnalysis]: Checked inductivity of 1112 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 914 trivial. 0 not checked. [2018-10-26 23:48:20,261 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-26 23:48:20,261 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-10-26 23:48:20,262 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-26 23:48:20,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-26 23:48:20,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-10-26 23:48:20,262 INFO L87 Difference]: Start difference. First operand 140 states and 149 transitions. Second operand 12 states. [2018-10-26 23:48:20,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:48:20,302 INFO L93 Difference]: Finished difference Result 230 states and 248 transitions. [2018-10-26 23:48:20,303 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-26 23:48:20,303 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 215 [2018-10-26 23:48:20,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:48:20,304 INFO L225 Difference]: With dead ends: 230 [2018-10-26 23:48:20,304 INFO L226 Difference]: Without dead ends: 145 [2018-10-26 23:48:20,305 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-10-26 23:48:20,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-10-26 23:48:20,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2018-10-26 23:48:20,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-10-26 23:48:20,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 154 transitions. [2018-10-26 23:48:20,311 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 154 transitions. Word has length 215 [2018-10-26 23:48:20,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:48:20,312 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 154 transitions. [2018-10-26 23:48:20,312 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-26 23:48:20,312 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 154 transitions. [2018-10-26 23:48:20,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-10-26 23:48:20,313 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:48:20,313 INFO L375 BasicCegarLoop]: trace histogram [21, 18, 18, 12, 12, 12, 11, 10, 10, 10, 10, 6, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:48:20,313 INFO L424 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:48:20,313 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:48:20,313 INFO L82 PathProgramCache]: Analyzing trace with hash 837032599, now seen corresponding path program 17 times [2018-10-26 23:48:20,314 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 23:48:20,314 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 23:48:20,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:48:20,314 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-26 23:48:20,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:48:20,330 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-26 23:48:20,331 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-26 23:48:20,331 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_407f7f0e-75cf-434d-90eb-23501e71d5cd/bin-2019/uautomizer/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-10-26 23:48:20,350 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-26 23:48:22,267 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2018-10-26 23:48:22,267 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-26 23:48:22,270 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:48:22,376 INFO L134 CoverageAnalysis]: Checked inductivity of 1159 backedges. 525 proven. 10 refuted. 0 times theorem prover too weak. 624 trivial. 0 not checked. [2018-10-26 23:48:22,393 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-26 23:48:22,393 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-10-26 23:48:22,394 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 23:48:22,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 23:48:22,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 23:48:22,394 INFO L87 Difference]: Start difference. First operand 145 states and 154 transitions. Second operand 5 states. [2018-10-26 23:48:22,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:48:22,417 INFO L93 Difference]: Finished difference Result 231 states and 251 transitions. [2018-10-26 23:48:22,420 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 23:48:22,420 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 220 [2018-10-26 23:48:22,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:48:22,422 INFO L225 Difference]: With dead ends: 231 [2018-10-26 23:48:22,422 INFO L226 Difference]: Without dead ends: 150 [2018-10-26 23:48:22,422 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 23:48:22,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2018-10-26 23:48:22,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 149. [2018-10-26 23:48:22,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-10-26 23:48:22,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 158 transitions. [2018-10-26 23:48:22,433 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 158 transitions. Word has length 220 [2018-10-26 23:48:22,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:48:22,434 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 158 transitions. [2018-10-26 23:48:22,434 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 23:48:22,434 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 158 transitions. [2018-10-26 23:48:22,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-10-26 23:48:22,435 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:48:22,435 INFO L375 BasicCegarLoop]: trace histogram [24, 21, 21, 12, 12, 12, 11, 10, 10, 10, 10, 9, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:48:22,435 INFO L424 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:48:22,435 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:48:22,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1115243984, now seen corresponding path program 18 times [2018-10-26 23:48:22,435 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 23:48:22,435 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 23:48:22,436 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:48:22,436 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-26 23:48:22,436 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:48:22,452 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-26 23:48:22,452 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-26 23:48:22,452 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_407f7f0e-75cf-434d-90eb-23501e71d5cd/bin-2019/uautomizer/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-26 23:48:22,476 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-26 23:48:22,745 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2018-10-26 23:48:22,745 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-26 23:48:22,751 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:48:23,274 INFO L134 CoverageAnalysis]: Checked inductivity of 1405 backedges. 524 proven. 44 refuted. 0 times theorem prover too weak. 837 trivial. 0 not checked. [2018-10-26 23:48:23,301 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-26 23:48:23,301 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-10-26 23:48:23,302 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-26 23:48:23,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-26 23:48:23,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-10-26 23:48:23,302 INFO L87 Difference]: Start difference. First operand 149 states and 158 transitions. Second operand 7 states. [2018-10-26 23:48:23,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:48:23,666 INFO L93 Difference]: Finished difference Result 207 states and 222 transitions. [2018-10-26 23:48:23,667 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 23:48:23,667 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 232 [2018-10-26 23:48:23,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:48:23,668 INFO L225 Difference]: With dead ends: 207 [2018-10-26 23:48:23,668 INFO L226 Difference]: Without dead ends: 159 [2018-10-26 23:48:23,669 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-10-26 23:48:23,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-10-26 23:48:23,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 155. [2018-10-26 23:48:23,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-10-26 23:48:23,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 164 transitions. [2018-10-26 23:48:23,677 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 164 transitions. Word has length 232 [2018-10-26 23:48:23,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:48:23,678 INFO L481 AbstractCegarLoop]: Abstraction has 155 states and 164 transitions. [2018-10-26 23:48:23,678 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-26 23:48:23,678 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 164 transitions. [2018-10-26 23:48:23,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-10-26 23:48:23,680 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:48:23,681 INFO L375 BasicCegarLoop]: trace histogram [24, 21, 21, 12, 12, 12, 11, 10, 10, 10, 10, 9, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:48:23,681 INFO L424 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:48:23,681 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:48:23,681 INFO L82 PathProgramCache]: Analyzing trace with hash 1149205992, now seen corresponding path program 19 times [2018-10-26 23:48:23,681 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 23:48:23,681 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 23:48:23,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:48:23,682 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-26 23:48:23,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:48:23,705 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-26 23:48:23,705 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-26 23:48:23,705 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_407f7f0e-75cf-434d-90eb-23501e71d5cd/bin-2019/uautomizer/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-10-26 23:48:23,715 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-26 23:48:23,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:48:23,770 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:48:24,134 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 284 proven. 21 refuted. 0 times theorem prover too weak. 1126 trivial. 0 not checked. [2018-10-26 23:48:24,152 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-26 23:48:24,152 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-10-26 23:48:24,152 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 23:48:24,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 23:48:24,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-10-26 23:48:24,153 INFO L87 Difference]: Start difference. First operand 155 states and 164 transitions. Second operand 6 states. [2018-10-26 23:48:24,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:48:24,458 INFO L93 Difference]: Finished difference Result 251 states and 271 transitions. [2018-10-26 23:48:24,459 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-26 23:48:24,459 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 238 [2018-10-26 23:48:24,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:48:24,460 INFO L225 Difference]: With dead ends: 251 [2018-10-26 23:48:24,460 INFO L226 Difference]: Without dead ends: 160 [2018-10-26 23:48:24,461 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-10-26 23:48:24,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2018-10-26 23:48:24,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 159. [2018-10-26 23:48:24,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-10-26 23:48:24,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 168 transitions. [2018-10-26 23:48:24,467 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 168 transitions. Word has length 238 [2018-10-26 23:48:24,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:48:24,468 INFO L481 AbstractCegarLoop]: Abstraction has 159 states and 168 transitions. [2018-10-26 23:48:24,468 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 23:48:24,468 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 168 transitions. [2018-10-26 23:48:24,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-10-26 23:48:24,469 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:48:24,469 INFO L375 BasicCegarLoop]: trace histogram [27, 24, 24, 12, 12, 12, 12, 11, 10, 10, 10, 10, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:48:24,469 INFO L424 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:48:24,470 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:48:24,470 INFO L82 PathProgramCache]: Analyzing trace with hash -737763295, now seen corresponding path program 20 times [2018-10-26 23:48:24,470 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 23:48:24,470 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 23:48:24,470 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:48:24,470 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:48:24,471 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:48:24,493 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-26 23:48:24,493 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-26 23:48:24,493 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_407f7f0e-75cf-434d-90eb-23501e71d5cd/bin-2019/uautomizer/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-10-26 23:48:24,506 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-26 23:48:24,562 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-26 23:48:24,563 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-26 23:48:24,567 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:48:25,129 INFO L134 CoverageAnalysis]: Checked inductivity of 1713 backedges. 397 proven. 36 refuted. 0 times theorem prover too weak. 1280 trivial. 0 not checked. [2018-10-26 23:48:25,157 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-26 23:48:25,157 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-10-26 23:48:25,158 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-26 23:48:25,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-26 23:48:25,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-10-26 23:48:25,158 INFO L87 Difference]: Start difference. First operand 159 states and 168 transitions. Second operand 7 states. [2018-10-26 23:48:25,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:48:25,417 INFO L93 Difference]: Finished difference Result 259 states and 279 transitions. [2018-10-26 23:48:25,420 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 23:48:25,420 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 250 [2018-10-26 23:48:25,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:48:25,422 INFO L225 Difference]: With dead ends: 259 [2018-10-26 23:48:25,422 INFO L226 Difference]: Without dead ends: 164 [2018-10-26 23:48:25,422 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-10-26 23:48:25,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2018-10-26 23:48:25,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 163. [2018-10-26 23:48:25,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2018-10-26 23:48:25,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 172 transitions. [2018-10-26 23:48:25,432 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 172 transitions. Word has length 250 [2018-10-26 23:48:25,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:48:25,435 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 172 transitions. [2018-10-26 23:48:25,435 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-26 23:48:25,435 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 172 transitions. [2018-10-26 23:48:25,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2018-10-26 23:48:25,437 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:48:25,437 INFO L375 BasicCegarLoop]: trace histogram [30, 27, 27, 15, 12, 12, 12, 11, 10, 10, 10, 10, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:48:25,437 INFO L424 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:48:25,437 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:48:25,437 INFO L82 PathProgramCache]: Analyzing trace with hash -192494886, now seen corresponding path program 21 times [2018-10-26 23:48:25,437 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 23:48:25,437 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 23:48:25,442 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:48:25,442 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-26 23:48:25,442 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:48:25,454 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-26 23:48:25,455 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-26 23:48:25,455 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_407f7f0e-75cf-434d-90eb-23501e71d5cd/bin-2019/uautomizer/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-10-26 23:48:25,478 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-26 23:48:25,808 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2018-10-26 23:48:25,808 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-26 23:48:25,811 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:48:25,863 INFO L134 CoverageAnalysis]: Checked inductivity of 2031 backedges. 796 proven. 70 refuted. 0 times theorem prover too weak. 1165 trivial. 0 not checked. [2018-10-26 23:48:25,880 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-26 23:48:25,880 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-10-26 23:48:25,881 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-26 23:48:25,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-26 23:48:25,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-10-26 23:48:25,881 INFO L87 Difference]: Start difference. First operand 163 states and 172 transitions. Second operand 8 states. [2018-10-26 23:48:25,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:48:25,916 INFO L93 Difference]: Finished difference Result 229 states and 244 transitions. [2018-10-26 23:48:25,917 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-26 23:48:25,918 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 262 [2018-10-26 23:48:25,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:48:25,919 INFO L225 Difference]: With dead ends: 229 [2018-10-26 23:48:25,919 INFO L226 Difference]: Without dead ends: 173 [2018-10-26 23:48:25,919 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-10-26 23:48:25,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2018-10-26 23:48:25,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 169. [2018-10-26 23:48:25,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-10-26 23:48:25,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 178 transitions. [2018-10-26 23:48:25,928 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 178 transitions. Word has length 262 [2018-10-26 23:48:25,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:48:25,928 INFO L481 AbstractCegarLoop]: Abstraction has 169 states and 178 transitions. [2018-10-26 23:48:25,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-26 23:48:25,928 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 178 transitions. [2018-10-26 23:48:25,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2018-10-26 23:48:25,930 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:48:25,930 INFO L375 BasicCegarLoop]: trace histogram [30, 27, 27, 15, 12, 12, 12, 11, 10, 10, 10, 10, 7, 6, 6, 6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:48:25,930 INFO L424 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:48:25,930 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:48:25,930 INFO L82 PathProgramCache]: Analyzing trace with hash -206031374, now seen corresponding path program 22 times [2018-10-26 23:48:25,930 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 23:48:25,930 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 23:48:25,931 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:48:25,931 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-26 23:48:25,931 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:48:25,946 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-26 23:48:25,946 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-26 23:48:25,947 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_407f7f0e-75cf-434d-90eb-23501e71d5cd/bin-2019/uautomizer/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-26 23:48:25,963 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-26 23:48:26,019 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-26 23:48:26,019 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-26 23:48:26,024 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:48:26,161 INFO L134 CoverageAnalysis]: Checked inductivity of 2063 backedges. 526 proven. 55 refuted. 0 times theorem prover too weak. 1482 trivial. 0 not checked. [2018-10-26 23:48:26,179 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-26 23:48:26,179 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-10-26 23:48:26,179 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-26 23:48:26,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-26 23:48:26,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-10-26 23:48:26,180 INFO L87 Difference]: Start difference. First operand 169 states and 178 transitions. Second operand 8 states. [2018-10-26 23:48:26,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:48:26,220 INFO L93 Difference]: Finished difference Result 278 states and 298 transitions. [2018-10-26 23:48:26,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-26 23:48:26,224 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 268 [2018-10-26 23:48:26,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:48:26,225 INFO L225 Difference]: With dead ends: 278 [2018-10-26 23:48:26,226 INFO L226 Difference]: Without dead ends: 173 [2018-10-26 23:48:26,226 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-10-26 23:48:26,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2018-10-26 23:48:26,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2018-10-26 23:48:26,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-10-26 23:48:26,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 182 transitions. [2018-10-26 23:48:26,235 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 182 transitions. Word has length 268 [2018-10-26 23:48:26,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:48:26,235 INFO L481 AbstractCegarLoop]: Abstraction has 173 states and 182 transitions. [2018-10-26 23:48:26,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-26 23:48:26,235 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 182 transitions. [2018-10-26 23:48:26,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2018-10-26 23:48:26,237 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:48:26,237 INFO L375 BasicCegarLoop]: trace histogram [33, 30, 30, 18, 12, 12, 12, 11, 10, 10, 10, 10, 7, 6, 6, 6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:48:26,237 INFO L424 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:48:26,237 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:48:26,237 INFO L82 PathProgramCache]: Analyzing trace with hash 937095083, now seen corresponding path program 23 times [2018-10-26 23:48:26,237 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 23:48:26,238 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 23:48:26,238 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:48:26,238 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-26 23:48:26,238 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:48:26,255 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-26 23:48:26,255 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-26 23:48:26,255 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_407f7f0e-75cf-434d-90eb-23501e71d5cd/bin-2019/uautomizer/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-10-26 23:48:26,272 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-26 23:48:27,354 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2018-10-26 23:48:27,354 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-26 23:48:27,360 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:48:27,538 INFO L134 CoverageAnalysis]: Checked inductivity of 2417 backedges. 956 proven. 102 refuted. 0 times theorem prover too weak. 1359 trivial. 0 not checked. [2018-10-26 23:48:27,556 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-26 23:48:27,556 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-10-26 23:48:27,557 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-26 23:48:27,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-26 23:48:27,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-10-26 23:48:27,557 INFO L87 Difference]: Start difference. First operand 173 states and 182 transitions. Second operand 9 states. [2018-10-26 23:48:27,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:48:27,897 INFO L93 Difference]: Finished difference Result 243 states and 258 transitions. [2018-10-26 23:48:27,899 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-26 23:48:27,899 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 280 [2018-10-26 23:48:27,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:48:27,900 INFO L225 Difference]: With dead ends: 243 [2018-10-26 23:48:27,900 INFO L226 Difference]: Without dead ends: 183 [2018-10-26 23:48:27,901 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-10-26 23:48:27,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-10-26 23:48:27,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 179. [2018-10-26 23:48:27,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-10-26 23:48:27,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 188 transitions. [2018-10-26 23:48:27,908 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 188 transitions. Word has length 280 [2018-10-26 23:48:27,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:48:27,908 INFO L481 AbstractCegarLoop]: Abstraction has 179 states and 188 transitions. [2018-10-26 23:48:27,908 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-26 23:48:27,908 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 188 transitions. [2018-10-26 23:48:27,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2018-10-26 23:48:27,909 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:48:27,910 INFO L375 BasicCegarLoop]: trace histogram [33, 30, 30, 18, 12, 12, 12, 11, 10, 10, 10, 10, 8, 7, 7, 7, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:48:27,910 INFO L424 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:48:27,914 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:48:27,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1061300035, now seen corresponding path program 24 times [2018-10-26 23:48:27,915 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 23:48:27,915 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 23:48:27,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:48:27,916 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-26 23:48:27,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:48:27,935 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-26 23:48:27,935 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-26 23:48:27,936 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_407f7f0e-75cf-434d-90eb-23501e71d5cd/bin-2019/uautomizer/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-26 23:48:27,950 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-26 23:48:28,758 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2018-10-26 23:48:28,758 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-26 23:48:28,763 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:48:28,866 INFO L134 CoverageAnalysis]: Checked inductivity of 2455 backedges. 956 proven. 140 refuted. 0 times theorem prover too weak. 1359 trivial. 0 not checked. [2018-10-26 23:48:28,885 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-26 23:48:28,885 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-10-26 23:48:28,885 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-26 23:48:28,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-26 23:48:28,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-10-26 23:48:28,886 INFO L87 Difference]: Start difference. First operand 179 states and 188 transitions. Second operand 10 states. [2018-10-26 23:48:28,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:48:28,923 INFO L93 Difference]: Finished difference Result 249 states and 264 transitions. [2018-10-26 23:48:28,924 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-26 23:48:28,924 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 286 [2018-10-26 23:48:28,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:48:28,925 INFO L225 Difference]: With dead ends: 249 [2018-10-26 23:48:28,925 INFO L226 Difference]: Without dead ends: 189 [2018-10-26 23:48:28,926 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-10-26 23:48:28,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2018-10-26 23:48:28,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 185. [2018-10-26 23:48:28,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-10-26 23:48:28,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 194 transitions. [2018-10-26 23:48:28,931 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 194 transitions. Word has length 286 [2018-10-26 23:48:28,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:48:28,931 INFO L481 AbstractCegarLoop]: Abstraction has 185 states and 194 transitions. [2018-10-26 23:48:28,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-26 23:48:28,931 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 194 transitions. [2018-10-26 23:48:28,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2018-10-26 23:48:28,937 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:48:28,937 INFO L375 BasicCegarLoop]: trace histogram [33, 30, 30, 18, 12, 12, 12, 11, 10, 10, 10, 10, 9, 8, 8, 8, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:48:28,937 INFO L424 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:48:28,937 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:48:28,938 INFO L82 PathProgramCache]: Analyzing trace with hash -1126740773, now seen corresponding path program 25 times [2018-10-26 23:48:28,938 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 23:48:28,938 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 23:48:28,938 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:48:28,938 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-26 23:48:28,938 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:48:28,948 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-26 23:48:28,948 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-26 23:48:28,948 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_407f7f0e-75cf-434d-90eb-23501e71d5cd/bin-2019/uautomizer/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-26 23:48:28,959 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:48:29,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:48:29,010 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:48:29,116 INFO L134 CoverageAnalysis]: Checked inductivity of 2499 backedges. 956 proven. 184 refuted. 0 times theorem prover too weak. 1359 trivial. 0 not checked. [2018-10-26 23:48:29,134 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-26 23:48:29,134 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-10-26 23:48:29,135 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-26 23:48:29,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-26 23:48:29,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-10-26 23:48:29,135 INFO L87 Difference]: Start difference. First operand 185 states and 194 transitions. Second operand 11 states. [2018-10-26 23:48:29,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:48:29,194 INFO L93 Difference]: Finished difference Result 251 states and 266 transitions. [2018-10-26 23:48:29,195 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-26 23:48:29,195 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 292 [2018-10-26 23:48:29,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:48:29,197 INFO L225 Difference]: With dead ends: 251 [2018-10-26 23:48:29,197 INFO L226 Difference]: Without dead ends: 191 [2018-10-26 23:48:29,197 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-10-26 23:48:29,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-10-26 23:48:29,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2018-10-26 23:48:29,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-10-26 23:48:29,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 200 transitions. [2018-10-26 23:48:29,202 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 200 transitions. Word has length 292 [2018-10-26 23:48:29,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:48:29,203 INFO L481 AbstractCegarLoop]: Abstraction has 191 states and 200 transitions. [2018-10-26 23:48:29,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-26 23:48:29,203 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 200 transitions. [2018-10-26 23:48:29,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2018-10-26 23:48:29,209 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:48:29,209 INFO L375 BasicCegarLoop]: trace histogram [33, 30, 30, 18, 12, 12, 12, 11, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:48:29,210 INFO L424 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:48:29,210 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:48:29,210 INFO L82 PathProgramCache]: Analyzing trace with hash -1511006093, now seen corresponding path program 26 times [2018-10-26 23:48:29,210 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 23:48:29,210 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 23:48:29,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:48:29,211 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:48:29,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:48:29,226 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-26 23:48:29,226 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-26 23:48:29,226 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_407f7f0e-75cf-434d-90eb-23501e71d5cd/bin-2019/uautomizer/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-10-26 23:48:29,242 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-26 23:48:29,485 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-26 23:48:29,485 INFO L250 tOrderPrioritization]: Conjunction of SSA is sat [2018-10-26 23:48:29,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-26 23:48:29,910 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-10-26 23:48:30,064 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 11:48:30 BoogieIcfgContainer [2018-10-26 23:48:30,064 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 23:48:30,065 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-26 23:48:30,065 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-26 23:48:30,065 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-26 23:48:30,066 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:48:12" (3/4) ... [2018-10-26 23:48:30,068 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-10-26 23:48:30,198 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_407f7f0e-75cf-434d-90eb-23501e71d5cd/bin-2019/uautomizer/witness.graphml [2018-10-26 23:48:30,198 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-26 23:48:30,199 INFO L168 Benchmark]: Toolchain (without parser) took 19356.80 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 341.3 MB). Free memory was 954.4 MB in the beginning and 1.3 GB in the end (delta: -329.2 MB). Peak memory consumption was 12.2 MB. Max. memory is 11.5 GB. [2018-10-26 23:48:30,201 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 979.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 23:48:30,201 INFO L168 Benchmark]: CACSL2BoogieTranslator took 202.31 ms. Allocated memory is still 1.0 GB. Free memory was 954.4 MB in the beginning and 942.4 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2018-10-26 23:48:30,201 INFO L168 Benchmark]: Boogie Preprocessor took 40.76 ms. Allocated memory is still 1.0 GB. Free memory was 942.4 MB in the beginning and 939.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-10-26 23:48:30,202 INFO L168 Benchmark]: RCFGBuilder took 1129.95 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.3 MB). Free memory was 939.7 MB in the beginning and 1.1 GB in the end (delta: -153.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 11.5 GB. [2018-10-26 23:48:30,202 INFO L168 Benchmark]: TraceAbstraction took 17846.61 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 216.0 MB). Free memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: -200.7 MB). Peak memory consumption was 15.3 MB. Max. memory is 11.5 GB. [2018-10-26 23:48:30,202 INFO L168 Benchmark]: Witness Printer took 133.09 ms. Allocated memory is still 1.4 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2018-10-26 23:48:30,204 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 979.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 202.31 ms. Allocated memory is still 1.0 GB. Free memory was 954.4 MB in the beginning and 942.4 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 40.76 ms. Allocated memory is still 1.0 GB. Free memory was 942.4 MB in the beginning and 939.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 1129.95 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.3 MB). Free memory was 939.7 MB in the beginning and 1.1 GB in the end (delta: -153.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 17846.61 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 216.0 MB). Free memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: -200.7 MB). Peak memory consumption was 15.3 MB. Max. memory is 11.5 GB. * Witness Printer took 133.09 ms. Allocated memory is still 1.4 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 50]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L31] FCALL int x[10]; VAL [x={17:0}] [L32] CALL init_nondet(x) VAL [x={17:0}] [L5] int i; [L6] i = 0 VAL [i=0, x={17:0}, x={17:0}] [L6] COND TRUE i < 10 [L7] FCALL x[i] = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=-2147483646, i=0, x={17:0}, x={17:0}] [L6] i++ VAL [i=1, x={17:0}, x={17:0}] [L6] COND TRUE i < 10 [L7] FCALL x[i] = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=-2147483645, i=1, x={17:0}, x={17:0}] [L6] i++ VAL [i=2, x={17:0}, x={17:0}] [L6] COND TRUE i < 10 [L7] FCALL x[i] = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=-2147483647, i=2, x={17:0}, x={17:0}] [L6] i++ VAL [i=3, x={17:0}, x={17:0}] [L6] COND TRUE i < 10 [L7] FCALL x[i] = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=-2147483648, i=3, x={17:0}, x={17:0}] [L6] i++ VAL [i=4, x={17:0}, x={17:0}] [L6] COND TRUE i < 10 [L7] FCALL x[i] = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=2147483646, i=4, x={17:0}, x={17:0}] [L6] i++ VAL [i=5, x={17:0}, x={17:0}] [L6] COND TRUE i < 10 [L7] FCALL x[i] = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=2147483647, i=5, x={17:0}, x={17:0}] [L6] i++ VAL [i=6, x={17:0}, x={17:0}] [L6] COND TRUE i < 10 [L7] FCALL x[i] = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=-2147483648, i=6, x={17:0}, x={17:0}] [L6] i++ VAL [i=7, x={17:0}, x={17:0}] [L6] COND TRUE i < 10 [L7] FCALL x[i] = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=715827884, i=7, x={17:0}, x={17:0}] [L6] i++ VAL [i=8, x={17:0}, x={17:0}] [L6] COND TRUE i < 10 [L7] FCALL x[i] = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=715827882, i=8, x={17:0}, x={17:0}] [L6] i++ VAL [i=9, x={17:0}, x={17:0}] [L6] COND TRUE i < 10 [L7] FCALL x[i] = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=715827885, i=9, x={17:0}, x={17:0}] [L6] i++ VAL [i=10, x={17:0}, x={17:0}] [L6] COND FALSE, RET !(i < 10) VAL [i=10, x={17:0}, x={17:0}] [L32] init_nondet(x) VAL [x={17:0}] [L33] int temp; [L34] int ret; [L35] int ret2; [L36] int ret5; VAL [x={17:0}] [L38] CALL, EXPR rangesum(x) VAL [x={17:0}] [L13] int i; [L14] long long ret; [L15] ret = 0 [L16] int cnt = 0; [L17] i = 0 VAL [cnt=0, i=0, ret=0, x={17:0}, x={17:0}] [L17] COND TRUE i < 10 VAL [cnt=0, i=0, ret=0, x={17:0}, x={17:0}] [L18] COND FALSE !(i > 10/2) VAL [cnt=0, i=0, ret=0, x={17:0}, x={17:0}] [L17] i++ VAL [cnt=0, i=1, ret=0, x={17:0}, x={17:0}] [L17] COND TRUE i < 10 VAL [cnt=0, i=1, ret=0, x={17:0}, x={17:0}] [L18] COND FALSE !(i > 10/2) VAL [cnt=0, i=1, ret=0, x={17:0}, x={17:0}] [L17] i++ VAL [cnt=0, i=2, ret=0, x={17:0}, x={17:0}] [L17] COND TRUE i < 10 VAL [cnt=0, i=2, ret=0, x={17:0}, x={17:0}] [L18] COND FALSE !(i > 10/2) VAL [cnt=0, i=2, ret=0, x={17:0}, x={17:0}] [L17] i++ VAL [cnt=0, i=3, ret=0, x={17:0}, x={17:0}] [L17] COND TRUE i < 10 VAL [cnt=0, i=3, ret=0, x={17:0}, x={17:0}] [L18] COND FALSE !(i > 10/2) VAL [cnt=0, i=3, ret=0, x={17:0}, x={17:0}] [L17] i++ VAL [cnt=0, i=4, ret=0, x={17:0}, x={17:0}] [L17] COND TRUE i < 10 VAL [cnt=0, i=4, ret=0, x={17:0}, x={17:0}] [L18] COND FALSE !(i > 10/2) VAL [cnt=0, i=4, ret=0, x={17:0}, x={17:0}] [L17] i++ VAL [cnt=0, i=5, ret=0, x={17:0}, x={17:0}] [L17] COND TRUE i < 10 VAL [cnt=0, i=5, ret=0, x={17:0}, x={17:0}] [L18] COND FALSE !(i > 10/2) VAL [cnt=0, i=5, ret=0, x={17:0}, x={17:0}] [L17] i++ VAL [cnt=0, i=6, ret=0, x={17:0}, x={17:0}] [L17] COND TRUE i < 10 VAL [cnt=0, i=6, ret=0, x={17:0}, x={17:0}] [L18] COND TRUE i > 10/2 VAL [cnt=0, i=6, ret=0, x={17:0}, x={17:0}] [L19] EXPR, FCALL x[i] VAL [cnt=0, i=6, ret=0, x={17:0}, x={17:0}, x[i]=-2147483648] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 VAL [cnt=1, i=6, ret=-2147483648, x={17:0}, x={17:0}] [L17] i++ VAL [cnt=1, i=7, ret=-2147483648, x={17:0}, x={17:0}] [L17] COND TRUE i < 10 VAL [cnt=1, i=7, ret=-2147483648, x={17:0}, x={17:0}] [L18] COND TRUE i > 10/2 VAL [cnt=1, i=7, ret=-2147483648, x={17:0}, x={17:0}] [L19] EXPR, FCALL x[i] VAL [cnt=1, i=7, ret=-2147483648, x={17:0}, x={17:0}, x[i]=715827884] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 VAL [cnt=2, i=7, ret=-1431655764, x={17:0}, x={17:0}] [L17] i++ VAL [cnt=2, i=8, ret=-1431655764, x={17:0}, x={17:0}] [L17] COND TRUE i < 10 VAL [cnt=2, i=8, ret=-1431655764, x={17:0}, x={17:0}] [L18] COND TRUE i > 10/2 VAL [cnt=2, i=8, ret=-1431655764, x={17:0}, x={17:0}] [L19] EXPR, FCALL x[i] VAL [cnt=2, i=8, ret=-1431655764, x={17:0}, x={17:0}, x[i]=715827882] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 VAL [cnt=3, i=8, ret=-715827882, x={17:0}, x={17:0}] [L17] i++ VAL [cnt=3, i=9, ret=-715827882, x={17:0}, x={17:0}] [L17] COND TRUE i < 10 VAL [cnt=3, i=9, ret=-715827882, x={17:0}, x={17:0}] [L18] COND TRUE i > 10/2 VAL [cnt=3, i=9, ret=-715827882, x={17:0}, x={17:0}] [L19] EXPR, FCALL x[i] VAL [cnt=3, i=9, ret=-715827882, x={17:0}, x={17:0}, x[i]=715827885] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 VAL [cnt=4, i=9, ret=3, x={17:0}, x={17:0}] [L17] i++ VAL [cnt=4, i=10, ret=3, x={17:0}, x={17:0}] [L17] COND FALSE !(i < 10) VAL [cnt=4, i=10, ret=3, x={17:0}, x={17:0}] [L23] COND TRUE cnt !=0 [L24] RET return ret / cnt; VAL [\result=0, cnt=4, i=10, ret=3, x={17:0}, x={17:0}] [L38] EXPR rangesum(x) VAL [rangesum(x)=0, x={17:0}] [L38] ret = rangesum(x) [L40] EXPR, FCALL x[0] VAL [ret=0, x={17:0}, x[0]=-2147483646] [L40] temp=x[0] [L40] EXPR, FCALL x[1] VAL [ret=0, temp=-2147483646, x={17:0}, x[1]=-2147483645] [L40] FCALL x[0] = x[1] VAL [ret=0, temp=-2147483646, x={17:0}, x[1]=-2147483645] [L40] FCALL x[1] = temp VAL [ret=0, temp=-2147483646, x={17:0}] [L41] CALL, EXPR rangesum(x) VAL [x={17:0}] [L13] int i; [L14] long long ret; [L15] ret = 0 [L16] int cnt = 0; [L17] i = 0 VAL [cnt=0, i=0, ret=0, x={17:0}, x={17:0}] [L17] COND TRUE i < 10 VAL [cnt=0, i=0, ret=0, x={17:0}, x={17:0}] [L18] COND FALSE !(i > 10/2) VAL [cnt=0, i=0, ret=0, x={17:0}, x={17:0}] [L17] i++ VAL [cnt=0, i=1, ret=0, x={17:0}, x={17:0}] [L17] COND TRUE i < 10 VAL [cnt=0, i=1, ret=0, x={17:0}, x={17:0}] [L18] COND FALSE !(i > 10/2) VAL [cnt=0, i=1, ret=0, x={17:0}, x={17:0}] [L17] i++ VAL [cnt=0, i=2, ret=0, x={17:0}, x={17:0}] [L17] COND TRUE i < 10 VAL [cnt=0, i=2, ret=0, x={17:0}, x={17:0}] [L18] COND FALSE !(i > 10/2) VAL [cnt=0, i=2, ret=0, x={17:0}, x={17:0}] [L17] i++ VAL [cnt=0, i=3, ret=0, x={17:0}, x={17:0}] [L17] COND TRUE i < 10 VAL [cnt=0, i=3, ret=0, x={17:0}, x={17:0}] [L18] COND FALSE !(i > 10/2) VAL [cnt=0, i=3, ret=0, x={17:0}, x={17:0}] [L17] i++ VAL [cnt=0, i=4, ret=0, x={17:0}, x={17:0}] [L17] COND TRUE i < 10 VAL [cnt=0, i=4, ret=0, x={17:0}, x={17:0}] [L18] COND FALSE !(i > 10/2) VAL [cnt=0, i=4, ret=0, x={17:0}, x={17:0}] [L17] i++ VAL [cnt=0, i=5, ret=0, x={17:0}, x={17:0}] [L17] COND TRUE i < 10 VAL [cnt=0, i=5, ret=0, x={17:0}, x={17:0}] [L18] COND FALSE !(i > 10/2) VAL [cnt=0, i=5, ret=0, x={17:0}, x={17:0}] [L17] i++ VAL [cnt=0, i=6, ret=0, x={17:0}, x={17:0}] [L17] COND TRUE i < 10 VAL [cnt=0, i=6, ret=0, x={17:0}, x={17:0}] [L18] COND TRUE i > 10/2 VAL [cnt=0, i=6, ret=0, x={17:0}, x={17:0}] [L19] EXPR, FCALL x[i] VAL [cnt=0, i=6, ret=0, x={17:0}, x={17:0}, x[i]=-2147483648] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 VAL [cnt=1, i=6, ret=-2147483648, x={17:0}, x={17:0}] [L17] i++ VAL [cnt=1, i=7, ret=-2147483648, x={17:0}, x={17:0}] [L17] COND TRUE i < 10 VAL [cnt=1, i=7, ret=-2147483648, x={17:0}, x={17:0}] [L18] COND TRUE i > 10/2 VAL [cnt=1, i=7, ret=-2147483648, x={17:0}, x={17:0}] [L19] EXPR, FCALL x[i] VAL [cnt=1, i=7, ret=-2147483648, x={17:0}, x={17:0}, x[i]=715827884] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 VAL [cnt=2, i=7, ret=-1431655764, x={17:0}, x={17:0}] [L17] i++ VAL [cnt=2, i=8, ret=-1431655764, x={17:0}, x={17:0}] [L17] COND TRUE i < 10 VAL [cnt=2, i=8, ret=-1431655764, x={17:0}, x={17:0}] [L18] COND TRUE i > 10/2 VAL [cnt=2, i=8, ret=-1431655764, x={17:0}, x={17:0}] [L19] EXPR, FCALL x[i] VAL [cnt=2, i=8, ret=-1431655764, x={17:0}, x={17:0}, x[i]=715827882] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 VAL [cnt=3, i=8, ret=-715827882, x={17:0}, x={17:0}] [L17] i++ VAL [cnt=3, i=9, ret=-715827882, x={17:0}, x={17:0}] [L17] COND TRUE i < 10 VAL [cnt=3, i=9, ret=-715827882, x={17:0}, x={17:0}] [L18] COND TRUE i > 10/2 VAL [cnt=3, i=9, ret=-715827882, x={17:0}, x={17:0}] [L19] EXPR, FCALL x[i] VAL [cnt=3, i=9, ret=-715827882, x={17:0}, x={17:0}, x[i]=715827885] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 VAL [cnt=4, i=9, ret=3, x={17:0}, x={17:0}] [L17] i++ VAL [cnt=4, i=10, ret=3, x={17:0}, x={17:0}] [L17] COND FALSE !(i < 10) VAL [cnt=4, i=10, ret=3, x={17:0}, x={17:0}] [L23] COND TRUE cnt !=0 [L24] RET return ret / cnt; VAL [\result=0, cnt=4, i=10, ret=3, x={17:0}, x={17:0}] [L41] EXPR rangesum(x) VAL [rangesum(x)=0, ret=0, temp=-2147483646, x={17:0}] [L41] ret2 = rangesum(x) [L42] EXPR, FCALL x[0] VAL [ret=0, ret2=0, temp=-2147483646, x={17:0}, x[0]=-2147483645] [L42] temp=x[0] [L43] int i =0 ; VAL [i=0, ret=0, ret2=0, temp=-2147483645, x={17:0}] [L43] COND TRUE i<10 -1 VAL [i=0, ret=0, ret2=0, temp=-2147483645, x={17:0}] [L44] EXPR, FCALL x[i+1] VAL [i=0, ret=0, ret2=0, temp=-2147483645, x={17:0}, x[i+1]=-2147483646] [L44] FCALL x[i] = x[i+1] VAL [i=0, ret=0, ret2=0, temp=-2147483645, x={17:0}, x[i+1]=-2147483646] [L43] i++ VAL [i=1, ret=0, ret2=0, temp=-2147483645, x={17:0}] [L43] COND TRUE i<10 -1 VAL [i=1, ret=0, ret2=0, temp=-2147483645, x={17:0}] [L44] EXPR, FCALL x[i+1] VAL [i=1, ret=0, ret2=0, temp=-2147483645, x={17:0}, x[i+1]=-2147483647] [L44] FCALL x[i] = x[i+1] VAL [i=1, ret=0, ret2=0, temp=-2147483645, x={17:0}, x[i+1]=-2147483647] [L43] i++ VAL [i=2, ret=0, ret2=0, temp=-2147483645, x={17:0}] [L43] COND TRUE i<10 -1 VAL [i=2, ret=0, ret2=0, temp=-2147483645, x={17:0}] [L44] EXPR, FCALL x[i+1] VAL [i=2, ret=0, ret2=0, temp=-2147483645, x={17:0}, x[i+1]=-2147483648] [L44] FCALL x[i] = x[i+1] VAL [i=2, ret=0, ret2=0, temp=-2147483645, x={17:0}, x[i+1]=-2147483648] [L43] i++ VAL [i=3, ret=0, ret2=0, temp=-2147483645, x={17:0}] [L43] COND TRUE i<10 -1 VAL [i=3, ret=0, ret2=0, temp=-2147483645, x={17:0}] [L44] EXPR, FCALL x[i+1] VAL [i=3, ret=0, ret2=0, temp=-2147483645, x={17:0}, x[i+1]=2147483646] [L44] FCALL x[i] = x[i+1] VAL [i=3, ret=0, ret2=0, temp=-2147483645, x={17:0}, x[i+1]=2147483646] [L43] i++ VAL [i=4, ret=0, ret2=0, temp=-2147483645, x={17:0}] [L43] COND TRUE i<10 -1 VAL [i=4, ret=0, ret2=0, temp=-2147483645, x={17:0}] [L44] EXPR, FCALL x[i+1] VAL [i=4, ret=0, ret2=0, temp=-2147483645, x={17:0}, x[i+1]=2147483647] [L44] FCALL x[i] = x[i+1] VAL [i=4, ret=0, ret2=0, temp=-2147483645, x={17:0}, x[i+1]=2147483647] [L43] i++ VAL [i=5, ret=0, ret2=0, temp=-2147483645, x={17:0}] [L43] COND TRUE i<10 -1 VAL [i=5, ret=0, ret2=0, temp=-2147483645, x={17:0}] [L44] EXPR, FCALL x[i+1] VAL [i=5, ret=0, ret2=0, temp=-2147483645, x={17:0}, x[i+1]=-2147483648] [L44] FCALL x[i] = x[i+1] VAL [i=5, ret=0, ret2=0, temp=-2147483645, x={17:0}, x[i+1]=-2147483648] [L43] i++ VAL [i=6, ret=0, ret2=0, temp=-2147483645, x={17:0}] [L43] COND TRUE i<10 -1 VAL [i=6, ret=0, ret2=0, temp=-2147483645, x={17:0}] [L44] EXPR, FCALL x[i+1] VAL [i=6, ret=0, ret2=0, temp=-2147483645, x={17:0}, x[i+1]=715827884] [L44] FCALL x[i] = x[i+1] VAL [i=6, ret=0, ret2=0, temp=-2147483645, x={17:0}, x[i+1]=715827884] [L43] i++ VAL [i=7, ret=0, ret2=0, temp=-2147483645, x={17:0}] [L43] COND TRUE i<10 -1 VAL [i=7, ret=0, ret2=0, temp=-2147483645, x={17:0}] [L44] EXPR, FCALL x[i+1] VAL [i=7, ret=0, ret2=0, temp=-2147483645, x={17:0}, x[i+1]=715827882] [L44] FCALL x[i] = x[i+1] VAL [i=7, ret=0, ret2=0, temp=-2147483645, x={17:0}, x[i+1]=715827882] [L43] i++ VAL [i=8, ret=0, ret2=0, temp=-2147483645, x={17:0}] [L43] COND TRUE i<10 -1 VAL [i=8, ret=0, ret2=0, temp=-2147483645, x={17:0}] [L44] EXPR, FCALL x[i+1] VAL [i=8, ret=0, ret2=0, temp=-2147483645, x={17:0}, x[i+1]=715827885] [L44] FCALL x[i] = x[i+1] VAL [i=8, ret=0, ret2=0, temp=-2147483645, x={17:0}, x[i+1]=715827885] [L43] i++ VAL [i=9, ret=0, ret2=0, temp=-2147483645, x={17:0}] [L43] COND FALSE !(i<10 -1) VAL [i=9, ret=0, ret2=0, temp=-2147483645, x={17:0}] [L46] FCALL x[10 -1] = temp VAL [i=9, ret=0, ret2=0, temp=-2147483645, x={17:0}] [L47] CALL, EXPR rangesum(x) VAL [x={17:0}] [L13] int i; [L14] long long ret; [L15] ret = 0 [L16] int cnt = 0; [L17] i = 0 VAL [cnt=0, i=0, ret=0, x={17:0}, x={17:0}] [L17] COND TRUE i < 10 VAL [cnt=0, i=0, ret=0, x={17:0}, x={17:0}] [L18] COND FALSE !(i > 10/2) VAL [cnt=0, i=0, ret=0, x={17:0}, x={17:0}] [L17] i++ VAL [cnt=0, i=1, ret=0, x={17:0}, x={17:0}] [L17] COND TRUE i < 10 VAL [cnt=0, i=1, ret=0, x={17:0}, x={17:0}] [L18] COND FALSE !(i > 10/2) VAL [cnt=0, i=1, ret=0, x={17:0}, x={17:0}] [L17] i++ VAL [cnt=0, i=2, ret=0, x={17:0}, x={17:0}] [L17] COND TRUE i < 10 VAL [cnt=0, i=2, ret=0, x={17:0}, x={17:0}] [L18] COND FALSE !(i > 10/2) VAL [cnt=0, i=2, ret=0, x={17:0}, x={17:0}] [L17] i++ VAL [cnt=0, i=3, ret=0, x={17:0}, x={17:0}] [L17] COND TRUE i < 10 VAL [cnt=0, i=3, ret=0, x={17:0}, x={17:0}] [L18] COND FALSE !(i > 10/2) VAL [cnt=0, i=3, ret=0, x={17:0}, x={17:0}] [L17] i++ VAL [cnt=0, i=4, ret=0, x={17:0}, x={17:0}] [L17] COND TRUE i < 10 VAL [cnt=0, i=4, ret=0, x={17:0}, x={17:0}] [L18] COND FALSE !(i > 10/2) VAL [cnt=0, i=4, ret=0, x={17:0}, x={17:0}] [L17] i++ VAL [cnt=0, i=5, ret=0, x={17:0}, x={17:0}] [L17] COND TRUE i < 10 VAL [cnt=0, i=5, ret=0, x={17:0}, x={17:0}] [L18] COND FALSE !(i > 10/2) VAL [cnt=0, i=5, ret=0, x={17:0}, x={17:0}] [L17] i++ VAL [cnt=0, i=6, ret=0, x={17:0}, x={17:0}] [L17] COND TRUE i < 10 VAL [cnt=0, i=6, ret=0, x={17:0}, x={17:0}] [L18] COND TRUE i > 10/2 VAL [cnt=0, i=6, ret=0, x={17:0}, x={17:0}] [L19] EXPR, FCALL x[i] VAL [cnt=0, i=6, ret=0, x={17:0}, x={17:0}, x[i]=715827884] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 VAL [cnt=1, i=6, ret=715827884, x={17:0}, x={17:0}] [L17] i++ VAL [cnt=1, i=7, ret=715827884, x={17:0}, x={17:0}] [L17] COND TRUE i < 10 VAL [cnt=1, i=7, ret=715827884, x={17:0}, x={17:0}] [L18] COND TRUE i > 10/2 VAL [cnt=1, i=7, ret=715827884, x={17:0}, x={17:0}] [L19] EXPR, FCALL x[i] VAL [cnt=1, i=7, ret=715827884, x={17:0}, x={17:0}, x[i]=715827882] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 VAL [cnt=2, i=7, ret=1431655766, x={17:0}, x={17:0}] [L17] i++ VAL [cnt=2, i=8, ret=1431655766, x={17:0}, x={17:0}] [L17] COND TRUE i < 10 VAL [cnt=2, i=8, ret=1431655766, x={17:0}, x={17:0}] [L18] COND TRUE i > 10/2 VAL [cnt=2, i=8, ret=1431655766, x={17:0}, x={17:0}] [L19] EXPR, FCALL x[i] VAL [cnt=2, i=8, ret=1431655766, x={17:0}, x={17:0}, x[i]=715827885] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 VAL [cnt=3, i=8, ret=2147483651, x={17:0}, x={17:0}] [L17] i++ VAL [cnt=3, i=9, ret=2147483651, x={17:0}, x={17:0}] [L17] COND TRUE i < 10 VAL [cnt=3, i=9, ret=2147483651, x={17:0}, x={17:0}] [L18] COND TRUE i > 10/2 VAL [cnt=3, i=9, ret=2147483651, x={17:0}, x={17:0}] [L19] EXPR, FCALL x[i] VAL [cnt=3, i=9, ret=2147483651, x={17:0}, x={17:0}, x[i]=-2147483645] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 VAL [cnt=4, i=9, ret=6, x={17:0}, x={17:0}] [L17] i++ VAL [cnt=4, i=10, ret=6, x={17:0}, x={17:0}] [L17] COND FALSE !(i < 10) VAL [cnt=4, i=10, ret=6, x={17:0}, x={17:0}] [L23] COND TRUE cnt !=0 [L24] RET return ret / cnt; VAL [\result=1, cnt=4, i=10, ret=6, x={17:0}, x={17:0}] [L47] EXPR rangesum(x) VAL [i=9, rangesum(x)=1, ret=0, ret2=0, temp=-2147483645, x={17:0}] [L47] ret5 = rangesum(x) [L49] COND TRUE ret != ret2 || ret !=ret5 VAL [i=9, ret=0, ret2=0, ret5=1, temp=-2147483645, x={17:0}] [L50] __VERIFIER_error() VAL [i=9, ret=0, ret2=0, ret5=1, temp=-2147483645, x={17:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 57 locations, 1 error locations. UNSAFE Result, 17.7s OverallTime, 31 OverallIterations, 33 TraceHistogramMax, 3.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1581 SDtfs, 439 SDslu, 4788 SDs, 0 SdLazy, 696 SolverSat, 56 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5014 GetRequests, 4877 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 3.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=191occurred in iteration=30, 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: 0.2s AutomataMinimizationTime, 30 MinimizatonAttempts, 84 StatesRemovedByMinimization, 25 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 6.5s SatisfiabilityAnalysisTime, 4.8s InterpolantComputationTime, 5557 NumberOfCodeBlocks, 4681 NumberOfCodeBlocksAsserted, 127 NumberOfCheckSat, 5127 ConstructedInterpolants, 0 QuantifiedInterpolants, 1271349 SizeOfPredicates, 28 NumberOfNonLiveVariables, 8492 ConjunctsInSsa, 174 ConjunctsInUnsatCore, 32 InterpolantComputations, 5 PerfectInterpolantSequences, 24527/25986 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...